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Created December 7, 2025 21:08
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solution-draft-log-pr-1765141736117.txt
# Solve.mjs Log - 2025-12-07T21:03:43.073Z
[2025-12-07T21:03:43.075Z] [INFO] πŸ“ Log file: /home/hive/solve-2025-12-07T21-03-43-073Z.log
[2025-12-07T21:03:43.076Z] [INFO] (All output will be logged here)
[2025-12-07T21:03:43.516Z] [INFO]
[2025-12-07T21:03:43.517Z] [INFO] πŸš€ solve v0.37.18
[2025-12-07T21:03:43.517Z] [INFO] πŸ”§ Raw command executed:
[2025-12-07T21:03:43.518Z] [INFO] /home/hive/.nvm/versions/node/v20.19.6/bin/node /home/hive/.bun/bin/solve https://github.com/andchir/video-timeline/issues/120 --auto-fork --auto-continue --attach-logs --verbose --no-tool-check
[2025-12-07T21:03:43.518Z] [INFO]
[2025-12-07T21:03:43.527Z] [INFO]
[2025-12-07T21:03:43.528Z] [WARNING] ⚠️ SECURITY WARNING: --attach-logs is ENABLED
[2025-12-07T21:03:43.528Z] [INFO]
[2025-12-07T21:03:43.529Z] [INFO] This option will upload the complete solution draft log file to the Pull Request.
[2025-12-07T21:03:43.529Z] [INFO] The log may contain sensitive information such as:
[2025-12-07T21:03:43.529Z] [INFO] β€’ API keys, tokens, or secrets
[2025-12-07T21:03:43.530Z] [INFO] β€’ File paths and directory structures
[2025-12-07T21:03:43.530Z] [INFO] β€’ Command outputs and error messages
[2025-12-07T21:03:43.530Z] [INFO] β€’ Internal system information
[2025-12-07T21:03:43.530Z] [INFO]
[2025-12-07T21:03:43.531Z] [INFO] ⚠️ DO NOT use this option with public repositories or if the log
[2025-12-07T21:03:43.531Z] [INFO] might contain sensitive data that should not be shared publicly.
[2025-12-07T21:03:43.531Z] [INFO]
[2025-12-07T21:03:43.531Z] [INFO] Continuing in 5 seconds... (Press Ctrl+C to abort)
[2025-12-07T21:03:43.531Z] [INFO]
[2025-12-07T21:03:48.536Z] [INFO]
[2025-12-07T21:03:48.562Z] [INFO] πŸ’Ύ Disk space check: 19543MB available (500MB required) βœ…
[2025-12-07T21:03:48.564Z] [INFO] 🧠 Memory check: 10427MB available, swap: 2047MB (0MB used), total: 12474MB (256MB required) βœ…
[2025-12-07T21:03:48.564Z] [INFO] ⏩ Skipping tool connection validation (dry-run mode or skip-tool-connection-check enabled)
[2025-12-07T21:03:48.564Z] [INFO] ⏩ Skipping GitHub authentication check (dry-run mode or skip-tool-connection-check enabled)
[2025-12-07T21:03:48.564Z] [INFO] πŸ“‹ URL validation:
[2025-12-07T21:03:48.565Z] [INFO] Input URL: https://github.com/andchir/video-timeline/issues/120
[2025-12-07T21:03:48.565Z] [INFO] Is Issue URL: true
[2025-12-07T21:03:48.565Z] [INFO] Is PR URL: false
[2025-12-07T21:03:48.565Z] [INFO] πŸ” Checking repository access for auto-fork...
[2025-12-07T21:03:49.163Z] [INFO] Repository visibility: public
[2025-12-07T21:03:49.164Z] [INFO] βœ… Auto-fork: No write access detected, enabling fork mode
[2025-12-07T21:03:49.164Z] [INFO] βœ… Repository access check: Skipped (fork mode enabled)
[2025-12-07T21:03:49.521Z] [INFO] Repository visibility: public
[2025-12-07T21:03:49.522Z] [INFO] Auto-cleanup default: false (repository is public)
[2025-12-07T21:03:49.523Z] [INFO] πŸ” Auto-continue enabled: Checking for existing PRs for issue #120...
[2025-12-07T21:03:50.136Z] [INFO] πŸ” Fork mode: Checking for existing branches in konard/andchir-video-timeline...
[2025-12-07T21:03:50.778Z] [INFO] πŸ“ No existing PRs found for issue #120 - creating new PR
[2025-12-07T21:03:50.779Z] [INFO] πŸ“ Issue mode: Working with issue #120
[2025-12-07T21:03:50.781Z] [INFO]
Creating temporary directory: /tmp/gh-issue-solver-1765141430780
[2025-12-07T21:03:50.784Z] [INFO]
🍴 Fork mode: ENABLED
[2025-12-07T21:03:50.785Z] [INFO] Checking fork status...
[2025-12-07T21:03:51.063Z] [INFO] πŸ” Detecting fork conflicts...
[2025-12-07T21:03:51.928Z] [INFO] βœ… No fork conflict: Safe to proceed
[2025-12-07T21:03:52.225Z] [INFO] βœ… Fork exists: konard/andchir-video-timeline
[2025-12-07T21:03:52.227Z] [INFO]
πŸ“₯ Cloning repository: konard/andchir-video-timeline
[2025-12-07T21:03:53.800Z] [INFO] βœ… Cloned to: /tmp/gh-issue-solver-1765141430780
[2025-12-07T21:03:53.815Z] [INFO] πŸ”— Setting upstream: andchir/video-timeline
[2025-12-07T21:03:53.829Z] [INFO] ℹ️ Upstream exists: Using existing upstream remote
[2025-12-07T21:03:53.829Z] [INFO] πŸ”„ Fetching upstream...
[2025-12-07T21:03:54.103Z] [INFO] βœ… Upstream fetched: Successfully
[2025-12-07T21:03:54.104Z] [INFO] πŸ”„ Syncing default branch...
[2025-12-07T21:03:54.443Z] [INFO] ℹ️ Default branch: main
[2025-12-07T21:03:54.484Z] [INFO] βœ… Default branch synced: with upstream/main
[2025-12-07T21:03:54.484Z] [INFO] πŸ”„ Pushing to fork: main branch
[2025-12-07T21:03:55.242Z] [INFO] βœ… Fork updated: Default branch pushed to fork
[2025-12-07T21:03:55.319Z] [INFO]
πŸ“Œ Default branch: main
[2025-12-07T21:03:55.334Z] [INFO]
🌿 Creating branch: issue-120-b7c3b4d32d3c from main
[2025-12-07T21:03:55.346Z] [INFO] πŸ” Verifying: Branch creation...
[2025-12-07T21:03:55.357Z] [INFO] βœ… Branch created: issue-120-b7c3b4d32d3c
[2025-12-07T21:03:55.358Z] [INFO] βœ… Current branch: issue-120-b7c3b4d32d3c
[2025-12-07T21:03:55.358Z] [INFO] Branch operation: Create new branch
[2025-12-07T21:03:55.358Z] [INFO] Branch verification: Matches expected
[2025-12-07T21:03:55.361Z] [INFO]
πŸš€ Auto PR creation: ENABLED
[2025-12-07T21:03:55.361Z] [INFO] Creating: Initial commit and draft PR...
[2025-12-07T21:03:55.362Z] [INFO]
[2025-12-07T21:03:55.362Z] [INFO] πŸ“ Creating: CLAUDE.md with task details
[2025-12-07T21:03:55.363Z] [INFO] Issue URL from argv['issue-url']: https://github.com/andchir/video-timeline/issues/120
[2025-12-07T21:03:55.363Z] [INFO] Issue URL from argv._[0]: undefined
[2025-12-07T21:03:55.364Z] [INFO] Final issue URL: https://github.com/andchir/video-timeline/issues/120
[2025-12-07T21:03:55.364Z] [INFO] CLAUDE.md already exists, appending task info...
[2025-12-07T21:03:55.364Z] [INFO] βœ… File created: CLAUDE.md
[2025-12-07T21:03:55.364Z] [INFO] πŸ“¦ Adding file: To git staging
[2025-12-07T21:03:55.391Z] [INFO] Git status after add: M CLAUDE.md
[2025-12-07T21:03:55.392Z] [INFO] πŸ“ Creating commit: With CLAUDE.md file
[2025-12-07T21:03:55.408Z] [INFO] βœ… Commit created: Successfully with CLAUDE.md
[2025-12-07T21:03:55.408Z] [INFO] Commit output: [issue-120-b7c3b4d32d3c a8ce66a] Initial commit with task details for issue #120
1 file changed, 13 insertions(+), 1 deletion(-)
[2025-12-07T21:03:55.420Z] [INFO] Commit hash: a8ce66a...
[2025-12-07T21:03:55.432Z] [INFO] Latest commit: a8ce66a Initial commit with task details for issue #120
[2025-12-07T21:03:55.446Z] [INFO] Git status: clean
[2025-12-07T21:03:55.458Z] [INFO] Remotes: origin https://github.com/konard/andchir-video-timeline.git (fetch)
[2025-12-07T21:03:55.473Z] [INFO] Branch info: * issue-120-b7c3b4d32d3c a8ce66a Initial commit with task details for issue #120
main 14446c8 [origin/main] Merge pull request #119 from konard/issue-118-c732e424b4f8
[2025-12-07T21:03:55.474Z] [INFO] πŸ“€ Pushing branch: To remote repository...
[2025-12-07T21:03:55.474Z] [INFO] Push command: git push -u origin issue-120-b7c3b4d32d3c
[2025-12-07T21:03:56.350Z] [INFO] Push exit code: 0
[2025-12-07T21:03:56.351Z] [INFO] Push output: remote:
remote: Create a pull request for 'issue-120-b7c3b4d32d3c' on GitHub by visiting:
remote: https://github.com/konard/andchir-video-timeline/pull/new/issue-120-b7c3b4d32d3c
remote:
To https://github.com/konard/andchir-video-timeline.git
* [new branch] issue-120-b7c3b4d32d3c -> issue-120-b7c3b4d32d3c
branch 'issue-120-b7c3b4d32d3c' set up to track 'origin/issue-120-b7c3b4d32d3c'.
[2025-12-07T21:03:56.351Z] [INFO] βœ… Branch pushed: Successfully to remote
[2025-12-07T21:03:56.351Z] [INFO] Push output: remote:
remote: Create a pull request for 'issue-120-b7c3b4d32d3c' on GitHub by visiting:
remote: https://github.com/konard/andchir-video-timeline/pull/new/issue-120-b7c3b4d32d3c
remote:
To https://github.com/konard/andchir-video-timeline.git
* [new branch] issue-120-b7c3b4d32d3c -> issue-120-b7c3b4d32d3c
branch 'issue-120-b7c3b4d32d3c' set up to track 'origin/issue-120-b7c3b4d32d3c'.
[2025-12-07T21:03:56.351Z] [INFO] Waiting for GitHub to sync...
[2025-12-07T21:03:58.806Z] [INFO] Compare API check: 1 commit(s) ahead of main
[2025-12-07T21:03:58.806Z] [INFO] GitHub compare API ready: 1 commit(s) found
[2025-12-07T21:03:59.071Z] [INFO] Branch verified on GitHub: issue-120-b7c3b4d32d3c
[2025-12-07T21:03:59.519Z] [INFO] Remote commit SHA: a8ce66a...
[2025-12-07T21:03:59.520Z] [INFO] πŸ“‹ Getting issue: Title from GitHub...
[2025-12-07T21:03:59.826Z] [INFO] Issue title: "ΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΊΠ°Π΄Ρ€Π° сразу послС Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ страницы"
[2025-12-07T21:03:59.826Z] [INFO] πŸ‘€ Getting user: Current GitHub account...
[2025-12-07T21:04:00.252Z] [INFO] Current user: konard
[2025-12-07T21:04:00.496Z] [INFO] User is not a collaborator (will skip assignment)
[2025-12-07T21:04:00.502Z] [INFO] User is not a collaborator (will skip assignment)
[2025-12-07T21:04:00.503Z] [INFO] πŸ”„ Fetching: Latest main branch...
[2025-12-07T21:04:00.818Z] [INFO] βœ… Base updated: Fetched latest main
[2025-12-07T21:04:00.818Z] [INFO] πŸ” Checking: Commits between branches...
[2025-12-07T21:04:00.833Z] [INFO] Commits ahead of origin/main: 1
[2025-12-07T21:04:00.834Z] [INFO] βœ… Commits found: 1 commit(s) ahead
[2025-12-07T21:04:00.835Z] [INFO] πŸ”€ Creating PR: Draft pull request...
[2025-12-07T21:04:00.835Z] [INFO] 🎯 Target branch: main (default)
[2025-12-07T21:04:00.835Z] [INFO] PR Title: [WIP] ΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΊΠ°Π΄Ρ€Π° сразу послС Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ страницы
[2025-12-07T21:04:00.836Z] [INFO] Base branch: main
[2025-12-07T21:04:00.837Z] [INFO] Head branch: issue-120-b7c3b4d32d3c
[2025-12-07T21:04:00.837Z] [INFO] Assignee: konard
[2025-12-07T21:04:00.837Z] [INFO] PR Body:
## πŸ€– AI-Powered Solution Draft
This pull request is being automatically generated to solve issue andchir/video-timeline#120.
### πŸ“‹ Issue Reference
Fixes andchir/video-timeline#120
### 🚧 Status
**Work in Progress** - The AI assistant is currently analyzing and implementing the solution draft.
### πŸ“ Implementation Details
_Details will be added as the solution draft is developed..._
---
*This PR was created automatically by the AI issue solver*
[2025-12-07T21:04:00.839Z] [INFO] Command: cd "/tmp/gh-issue-solver-1765141430780" && gh pr create --draft --title "$(cat '/tmp/pr-title-1765141440839.txt')" --body-file "/tmp/pr-body-1765141440838.md" --base main --head konard:issue-120-b7c3b4d32d3c --repo andchir/video-timeline
[2025-12-07T21:04:02.625Z] [INFO] πŸ” Verifying: PR creation...
[2025-12-07T21:04:02.950Z] [INFO] βœ… Verification: PR exists on GitHub
[2025-12-07T21:04:02.951Z] [INFO] βœ… PR created: #121
[2025-12-07T21:04:02.952Z] [INFO] πŸ“ PR URL: https://github.com/andchir/video-timeline/pull/121
[2025-12-07T21:04:02.952Z] [INFO] ℹ️ Note: Could not assign (no permission)
[2025-12-07T21:04:02.952Z] [INFO] πŸ”— Linking: Issue #120 to PR #121...
[2025-12-07T21:04:03.288Z] [INFO] Issue node ID: I_kwDOQMVfss7cxip-
[2025-12-07T21:04:03.635Z] [INFO] PR node ID: PR_kwDOQMVfss63ja5A
[2025-12-07T21:04:03.955Z] [INFO]
[2025-12-07T21:04:03.956Z] [WARNING] ⚠️ ISSUE LINK MISSING: PR not linked to issue
[2025-12-07T21:04:03.956Z] [INFO]
[2025-12-07T21:04:03.956Z] [WARNING] The PR was created from a fork but wasn't linked to the issue.
[2025-12-07T21:04:03.956Z] [WARNING] Expected: "Fixes andchir/video-timeline#120" in PR body
[2025-12-07T21:04:03.957Z] [INFO]
[2025-12-07T21:04:03.957Z] [WARNING] To fix manually:
[2025-12-07T21:04:03.957Z] [WARNING] 1. Edit the PR description at: https://github.com/andchir/video-timeline/pull/121
[2025-12-07T21:04:03.957Z] [WARNING] 2. Add this line: Fixes andchir/video-timeline#120
[2025-12-07T21:04:03.957Z] [INFO]
[2025-12-07T21:04:04.206Z] [INFO] πŸ‘€ Current user: konard
[2025-12-07T21:04:04.206Z] [INFO]
πŸ“Š Comment counting conditions:
[2025-12-07T21:04:04.206Z] [INFO] prNumber: 121
[2025-12-07T21:04:04.207Z] [INFO] branchName: issue-120-b7c3b4d32d3c
[2025-12-07T21:04:04.207Z] [INFO] isContinueMode: false
[2025-12-07T21:04:04.207Z] [INFO] Will count comments: true
[2025-12-07T21:04:04.207Z] [INFO] πŸ’¬ Counting comments: Checking for new comments since last commit...
[2025-12-07T21:04:04.208Z] [INFO] PR #121 on branch: issue-120-b7c3b4d32d3c
[2025-12-07T21:04:04.208Z] [INFO] Owner/Repo: andchir/video-timeline
[2025-12-07T21:04:04.520Z] [INFO] πŸ“… Last commit time (from API): 2025-12-07T21:03:55.000Z
[2025-12-07T21:04:05.338Z] [INFO] πŸ’¬ New PR comments: 0
[2025-12-07T21:04:05.338Z] [INFO] πŸ’¬ New issue comments: 0
[2025-12-07T21:04:05.339Z] [INFO] Total new comments: 0
[2025-12-07T21:04:05.339Z] [INFO] Comment lines to add: No (saving tokens)
[2025-12-07T21:04:05.339Z] [INFO] PR review comments fetched: 0
[2025-12-07T21:04:05.339Z] [INFO] PR conversation comments fetched: 0
[2025-12-07T21:04:05.340Z] [INFO] Total PR comments checked: 0
[2025-12-07T21:04:07.767Z] [INFO] Feedback info will be added to prompt:
[2025-12-07T21:04:07.768Z] [INFO] - Pull request description was edited after last commit
[2025-12-07T21:04:07.768Z] [INFO] πŸ“… Getting timestamps: From GitHub servers...
[2025-12-07T21:04:08.081Z] [INFO] πŸ“ Issue updated: 2025-12-07T21:03:21.000Z
[2025-12-07T21:04:08.551Z] [INFO] πŸ’¬ Comments: None found
[2025-12-07T21:04:08.850Z] [INFO] πŸ”€ Recent PR: 2025-12-07T21:04:02.000Z
[2025-12-07T21:04:08.851Z] [INFO]
βœ… Reference time: 2025-12-07T21:04:02.000Z
[2025-12-07T21:04:08.851Z] [INFO]
πŸ” Checking for uncommitted changes to include as feedback...
[2025-12-07T21:04:08.865Z] [INFO] βœ… No uncommitted changes found
[2025-12-07T21:04:09.165Z] [INFO] πŸ“¦ Fork workflows detected: https://github.com/konard/andchir-video-timeline/actions?query=branch%3Aissue-120-b7c3b4d32d3c
[2025-12-07T21:04:09.170Z] [INFO]
πŸ“ Final prompt structure:
[2025-12-07T21:04:09.170Z] [INFO] Characters: 503
[2025-12-07T21:04:09.171Z] [INFO] System prompt characters: 8471
[2025-12-07T21:04:09.171Z] [INFO] Feedback info: Included
[2025-12-07T21:04:09.172Z] [INFO]
πŸ€– Executing Claude: SONNET
[2025-12-07T21:04:09.173Z] [INFO] Model: sonnet
[2025-12-07T21:04:09.173Z] [INFO] Working directory: /tmp/gh-issue-solver-1765141430780
[2025-12-07T21:04:09.173Z] [INFO] Branch: issue-120-b7c3b4d32d3c
[2025-12-07T21:04:09.173Z] [INFO] Prompt length: 503 chars
[2025-12-07T21:04:09.174Z] [INFO] System prompt length: 8471 chars
[2025-12-07T21:04:09.174Z] [INFO] Feedback info included: Yes (1 lines)
[2025-12-07T21:04:09.199Z] [INFO] πŸ“ˆ System resources before execution:
[2025-12-07T21:04:09.200Z] [INFO] Memory: MemFree: 6977808 kB
[2025-12-07T21:04:09.200Z] [INFO] Load: 0.13 0.09 0.19 1/441 612472
[2025-12-07T21:04:09.201Z] [INFO]
πŸ“ Raw command:
[2025-12-07T21:04:09.201Z] [INFO] (cd "/tmp/gh-issue-solver-1765141430780" && claude --output-format stream-json --verbose --dangerously-skip-permissions --model claude-sonnet-4-5-20250929 -p "Issue to solve: https://github.com/andchir/video-timeline/issues/120
Your prepared branch: issue-120-b7c3b4d32d3c
Your prepared working directory: /tmp/gh-issue-solver-1765141430780
Your prepared Pull Request: https://github.com/andchir/video-timeline/pull/121
Your forked repository: konard/andchir-video-timeline
Original repository (upstream): andchir/video-timeline
GitHub Actions on your fork: https://github.com/konard/andchir-video-timeline/actions?query=branch%3Aissue-120-b7c3b4d32d3c
Proceed." --append-system-prompt "You are an AI issue solver. You prefer to find the root cause of each and every issue. When you talk, you prefer to speak with facts which you have double-checked yourself or cite sources that provide evidence, like quote actual code or give references to documents or pages found on the internet. You are polite and patient, and prefer to assume good intent, trying your best to be helpful. If you are unsure or have assumptions, you prefer to test them yourself or ask questions to clarify requirements.
General guidelines.
- When you execute commands, always save their logs to files for easier reading if the output becomes large.
- When running commands, do not set a timeout yourself β€” let them run as long as needed (default timeout - 2 minutes is more than enough), and once they finish, review the logs in the file.
- When running sudo commands (especially package installations like apt-get, yum, npm install, etc.), always run them in the background to avoid timeout issues and permission errors when the process needs to be killed. Use the run_in_background parameter or append & to the command.
- When CI is failing or user reports failures, consider adding a detailed investigation protocol to your todo list with these steps:
Step 1: List recent runs with timestamps using: gh run list --repo andchir/video-timeline --branch issue-120-b7c3b4d32d3c --limit 5 --json databaseId,conclusion,createdAt,headSha
Step 2: Verify runs are after the latest commit by checking timestamps and SHA
Step 3: For each non-passing run, download logs to preserve them: gh run view {run-id} --repo andchir/video-timeline --log > ci-logs/{workflow}-{run-id}.log
Step 4: Read each downloaded log file using Read tool to understand the actual failures
Step 5: Report findings with specific errors and line numbers from logs
This detailed investigation is especially helpful when user mentions CI failures, asks to investigate logs, you see non-passing status, or when finalizing a PR.
Note: If user says \"failing\" but tools show \"passing\", this might indicate stale data - consider downloading fresh logs and checking timestamps to resolve the discrepancy.
- When a code or log file has more than 1500 lines, read it in chunks of 1500 lines.
- When facing a complex problem, do as much tracing as possible and turn on all verbose modes.
- When you create debug, test, or example/experiment scripts for fixing, always keep them in an examples and/or experiments folders so you can reuse them later.
- When testing your assumptions, use the experiment scripts, and add it to experiments folder.
- When your experiments can show real world use case of the software, add it to examples folder.
- When you face something extremely hard, use divide and conquer β€” it always helps.
Initial research.
- When you start, make sure you create detailed plan for yourself and follow your todo list step by step, make sure that as many points from these guidelines are added to your todo list to keep track of everything that can help you solve the issue with highest possible quality.
- When user mentions CI failures or asks to investigate logs, consider adding these todos to track the investigation: (1) List recent CI runs with timestamps, (2) Download logs from failed runs to ci-logs/ directory, (3) Analyze error messages and identify root cause, (4) Implement fix, (5) Verify fix resolves the specific errors found in logs.
- When you read issue, read all details and comments thoroughly.
- When you see screenshots or images in issue descriptions, pull request descriptions, comments, or discussions, use WebFetch tool (or fetch tool) to download the image first, then use Read tool to view and analyze it.
- When you need issue details, use gh issue view https://github.com/andchir/video-timeline/issues/120.
- When you need related code, use gh search code --owner andchir [keywords].
- When you need repo context, read files in your working directory.
- When you study related work, study the most recent related pull requests.
- When issue is not defined enough, write a comment to ask clarifying questions.
- When accessing GitHub Gists (especially private ones), use gh gist view command instead of direct URL fetching to ensure proper authentication.
- When you are fixing a bug, please make sure you first find the actual root cause, do as many experiments as needed.
- When you are fixing a bug and code does not have enough tracing/logs, add them and make sure they stay in the code, but are switched off by default.
- When you need latest comments on pull request (sorted newest first), use appropriate GitHub API commands.
- When you need latest comments on issue (sorted newest first), use appropriate GitHub API commands.
Solution development and testing.
- When issue is solvable, implement code with tests.
- When coding, each atomic step that can be useful by itself should be commited to the pull request's branch, meaning if work will be interrupted by any reason parts of solution will still be kept intact and safe in pull request.
- When you test:
start from testing of small functions using separate scripts;
write unit tests with mocks for easy and quick start.
- When you test integrations, use existing framework.
- When you test solution draft, include automated checks in pr.
- When issue is unclear, write comment on issue asking questions.
- When you encounter any problems that you unable to solve yourself (any human feedback or help), write a comment to the pull request asking for help.
- When you need human help, use gh pr comment 121 --body \"your message\" to comment on existing PR.
Preparing pull request.
- When you code, follow contributing guidelines.
- When you commit, write clear message.
- When you need examples of style, use gh pr list --repo andchir/video-timeline --state merged --search [keywords].
- When you open pr, describe solution draft and include tests.
- When there is a package with version and GitHub Actions workflows for automatic release, update the version (or other necessary release trigger) in your pull request to prepare for next release.
- When you update existing pr 121, use gh pr edit to modify title and description.
- When you are about to commit or push code, ALWAYS run local CI checks first if they are available in contributing guidelines (like ruff check, mypy, eslint, etc.) to catch errors before pushing.
- When you finalize the pull request:
follow style from merged prs for code, title, and description,
make sure no uncommitted changes corresponding to the original requirements are left behind,
make sure the default branch is merged to the pull request's branch,
make sure all CI checks passing if they exist before you finish,
double-check that all changes in the pull request answer to original requirements of the issue,
make sure no new new bugs are introduced in pull request by carefully reading gh pr diff,
make sure no previously existing features were removed without an explicit request from users via the issue description, issue comments, and/or pull request comments.
- When you finish implementation, use gh pr ready 121.
Workflow and collaboration.
- When you check branch, verify with git branch --show-current.
- When you push, push only to branch issue-120-b7c3b4d32d3c.
- When you finish, create a pull request from branch issue-120-b7c3b4d32d3c. (Note: PR 121 already exists, update it instead)
- When you organize workflow, use pull requests instead of direct merges to default branch (main or master).
- When you manage commits, preserve commit history for later analysis.
- When you contribute, keep repository history forward-moving with regular commits, pushes, and reverts if needed.
- When you face conflict that you cannot resolve yourself, ask for help.
- When you collaborate, respect branch protections by working only on issue-120-b7c3b4d32d3c.
- When you mention result, include pull request url or comment url.
- When you need to create pr, remember pr 121 already exists for this branch.
Self review.
- When you check your solution draft, run all tests locally.
- When you compare with repo style, use gh pr diff [number].
- When you finalize, confirm code, tests, and description are consistent." | jq -c .)
[2025-12-07T21:04:09.201Z] [INFO]
[2025-12-07T21:04:09.201Z] [INFO] πŸ“‹ User prompt:
[2025-12-07T21:04:09.202Z] [INFO] ---BEGIN USER PROMPT---
[2025-12-07T21:04:09.202Z] [INFO] Issue to solve: https://github.com/andchir/video-timeline/issues/120
Your prepared branch: issue-120-b7c3b4d32d3c
Your prepared working directory: /tmp/gh-issue-solver-1765141430780
Your prepared Pull Request: https://github.com/andchir/video-timeline/pull/121
Your forked repository: konard/andchir-video-timeline
Original repository (upstream): andchir/video-timeline
GitHub Actions on your fork: https://github.com/konard/andchir-video-timeline/actions?query=branch%3Aissue-120-b7c3b4d32d3c
Proceed.
[2025-12-07T21:04:09.202Z] [INFO] ---END USER PROMPT---
[2025-12-07T21:04:09.203Z] [INFO]
[2025-12-07T21:04:09.203Z] [INFO] πŸ“‹ System prompt:
[2025-12-07T21:04:09.203Z] [INFO] ---BEGIN SYSTEM PROMPT---
[2025-12-07T21:04:09.203Z] [INFO] You are an AI issue solver. You prefer to find the root cause of each and every issue. When you talk, you prefer to speak with facts which you have double-checked yourself or cite sources that provide evidence, like quote actual code or give references to documents or pages found on the internet. You are polite and patient, and prefer to assume good intent, trying your best to be helpful. If you are unsure or have assumptions, you prefer to test them yourself or ask questions to clarify requirements.
General guidelines.
- When you execute commands, always save their logs to files for easier reading if the output becomes large.
- When running commands, do not set a timeout yourself β€” let them run as long as needed (default timeout - 2 minutes is more than enough), and once they finish, review the logs in the file.
- When running sudo commands (especially package installations like apt-get, yum, npm install, etc.), always run them in the background to avoid timeout issues and permission errors when the process needs to be killed. Use the run_in_background parameter or append & to the command.
- When CI is failing or user reports failures, consider adding a detailed investigation protocol to your todo list with these steps:
Step 1: List recent runs with timestamps using: gh run list --repo andchir/video-timeline --branch issue-120-b7c3b4d32d3c --limit 5 --json databaseId,conclusion,createdAt,headSha
Step 2: Verify runs are after the latest commit by checking timestamps and SHA
Step 3: For each non-passing run, download logs to preserve them: gh run view {run-id} --repo andchir/video-timeline --log > ci-logs/{workflow}-{run-id}.log
Step 4: Read each downloaded log file using Read tool to understand the actual failures
Step 5: Report findings with specific errors and line numbers from logs
This detailed investigation is especially helpful when user mentions CI failures, asks to investigate logs, you see non-passing status, or when finalizing a PR.
Note: If user says "failing" but tools show "passing", this might indicate stale data - consider downloading fresh logs and checking timestamps to resolve the discrepancy.
- When a code or log file has more than 1500 lines, read it in chunks of 1500 lines.
- When facing a complex problem, do as much tracing as possible and turn on all verbose modes.
- When you create debug, test, or example/experiment scripts for fixing, always keep them in an examples and/or experiments folders so you can reuse them later.
- When testing your assumptions, use the experiment scripts, and add it to experiments folder.
- When your experiments can show real world use case of the software, add it to examples folder.
- When you face something extremely hard, use divide and conquer β€” it always helps.
Initial research.
- When you start, make sure you create detailed plan for yourself and follow your todo list step by step, make sure that as many points from these guidelines are added to your todo list to keep track of everything that can help you solve the issue with highest possible quality.
- When user mentions CI failures or asks to investigate logs, consider adding these todos to track the investigation: (1) List recent CI runs with timestamps, (2) Download logs from failed runs to ci-logs/ directory, (3) Analyze error messages and identify root cause, (4) Implement fix, (5) Verify fix resolves the specific errors found in logs.
- When you read issue, read all details and comments thoroughly.
- When you see screenshots or images in issue descriptions, pull request descriptions, comments, or discussions, use WebFetch tool (or fetch tool) to download the image first, then use Read tool to view and analyze it.
- When you need issue details, use gh issue view https://github.com/andchir/video-timeline/issues/120.
- When you need related code, use gh search code --owner andchir [keywords].
- When you need repo context, read files in your working directory.
- When you study related work, study the most recent related pull requests.
- When issue is not defined enough, write a comment to ask clarifying questions.
- When accessing GitHub Gists (especially private ones), use gh gist view command instead of direct URL fetching to ensure proper authentication.
- When you are fixing a bug, please make sure you first find the actual root cause, do as many experiments as needed.
- When you are fixing a bug and code does not have enough tracing/logs, add them and make sure they stay in the code, but are switched off by default.
- When you need latest comments on pull request (sorted newest first), use appropriate GitHub API commands.
- When you need latest comments on issue (sorted newest first), use appropriate GitHub API commands.
Solution development and testing.
- When issue is solvable, implement code with tests.
- When coding, each atomic step that can be useful by itself should be commited to the pull request's branch, meaning if work will be interrupted by any reason parts of solution will still be kept intact and safe in pull request.
- When you test:
start from testing of small functions using separate scripts;
write unit tests with mocks for easy and quick start.
- When you test integrations, use existing framework.
- When you test solution draft, include automated checks in pr.
- When issue is unclear, write comment on issue asking questions.
- When you encounter any problems that you unable to solve yourself (any human feedback or help), write a comment to the pull request asking for help.
- When you need human help, use gh pr comment 121 --body "your message" to comment on existing PR.
Preparing pull request.
- When you code, follow contributing guidelines.
- When you commit, write clear message.
- When you need examples of style, use gh pr list --repo andchir/video-timeline --state merged --search [keywords].
- When you open pr, describe solution draft and include tests.
- When there is a package with version and GitHub Actions workflows for automatic release, update the version (or other necessary release trigger) in your pull request to prepare for next release.
- When you update existing pr 121, use gh pr edit to modify title and description.
- When you are about to commit or push code, ALWAYS run local CI checks first if they are available in contributing guidelines (like ruff check, mypy, eslint, etc.) to catch errors before pushing.
- When you finalize the pull request:
follow style from merged prs for code, title, and description,
make sure no uncommitted changes corresponding to the original requirements are left behind,
make sure the default branch is merged to the pull request's branch,
make sure all CI checks passing if they exist before you finish,
double-check that all changes in the pull request answer to original requirements of the issue,
make sure no new new bugs are introduced in pull request by carefully reading gh pr diff,
make sure no previously existing features were removed without an explicit request from users via the issue description, issue comments, and/or pull request comments.
- When you finish implementation, use gh pr ready 121.
Workflow and collaboration.
- When you check branch, verify with git branch --show-current.
- When you push, push only to branch issue-120-b7c3b4d32d3c.
- When you finish, create a pull request from branch issue-120-b7c3b4d32d3c. (Note: PR 121 already exists, update it instead)
- When you organize workflow, use pull requests instead of direct merges to default branch (main or master).
- When you manage commits, preserve commit history for later analysis.
- When you contribute, keep repository history forward-moving with regular commits, pushes, and reverts if needed.
- When you face conflict that you cannot resolve yourself, ask for help.
- When you collaborate, respect branch protections by working only on issue-120-b7c3b4d32d3c.
- When you mention result, include pull request url or comment url.
- When you need to create pr, remember pr 121 already exists for this branch.
Self review.
- When you check your solution draft, run all tests locally.
- When you compare with repo style, use gh pr diff [number].
- When you finalize, confirm code, tests, and description are consistent.
[2025-12-07T21:04:09.204Z] [INFO] ---END SYSTEM PROMPT---
[2025-12-07T21:04:09.204Z] [INFO]
[2025-12-07T21:04:09.204Z] [INFO] πŸ“‹ Command details:
[2025-12-07T21:04:09.204Z] [INFO] πŸ“‚ Working directory: /tmp/gh-issue-solver-1765141430780
[2025-12-07T21:04:09.204Z] [INFO] 🌿 Branch: issue-120-b7c3b4d32d3c
[2025-12-07T21:04:09.205Z] [INFO] πŸ€– Model: Claude SONNET
[2025-12-07T21:04:09.205Z] [INFO] 🍴 Fork: konard/andchir-video-timeline
[2025-12-07T21:04:09.205Z] [INFO]
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"content": " 1β†’import { Injectable } from '@angular/core';\n 2β†’import { TimelineState } from '../models/timeline.models';\n 3β†’\n 4β†’@Injectable({\n 5β†’ providedIn: 'root'\n 6β†’})\n 7β†’export class Timel************rvice {\n 8β†’ private readonly STORAGE_KEY = 'video-timeline-state';\n 9β†’\n 10β†’ /**\n 11β†’ * Save timeline state to LocalStorage\n 12β†’ */\n 13β†’ saveState(state: TimelineState): void {\n 14β†’ try {\n 15β†’ const serialized = JSON.stringify(state);\n 16β†’ localStorage.setItem(this.STORAGE_KEY, serialized);\n 17β†’ } catch (error) {\n 18β†’ console.error('Failed to save timeline state to LocalStorage:', error);\n 19β†’ }\n 20β†’ }\n 21β†’\n 22β†’ /**\n 23β†’ * Load timeline state from LocalStorage\n 24β†’ * Returns null if no saved state exists or if loading fails\n 25β†’ */\n 26β†’ loadState(): TimelineState | null {\n 27β†’ try {\n 28β†’ const serialized = localStorage.getItem(this.STORAGE_KEY);\n 29β†’ if (serialized) {\n 30β†’ return JSON.parse(serialized) as TimelineState;\n 31β†’ }\n 32β†’ return null;\n 33β†’ } catch (error) {\n 34β†’ console.error('Failed to load timeline state from LocalStorage:', error);\n 35β†’ return null;\n 36β†’ }\n 37β†’ }\n 38β†’\n 39β†’ /**\n 40β†’ * Clear timeline state from LocalStorage\n 41β†’ */\n 42β†’ clearState(): void {\n 43β†’ try {\n 44β†’ localStorage.removeItem(this.STORAGE_KEY);\n 45β†’ } catch (error) {\n 46β†’ console.error('Failed to clear timeline state from LocalStorage:', error);\n 47β†’ }\n 48β†’ }\n 49β†’\n 50β†’ /**\n 51β†’ * Check if saved state exists\n 52β†’ */\n 53β†’ hasSavedState(): boolean {\n 54β†’ return localStorage.getItem(this.STORAGE_KEY) !== null;\n 55β†’ }\n 56β†’}\n 57β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
}
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"content": "import { Injectable } from '@angular/core';\nimport { TimelineState } from '../models/timeline.models';\n\n@Injectable({\n providedIn: 'root'\n})\nexport class Timel************rvice {\n private readonly STORAGE_KEY = 'video-timeline-state';\n\n /**\n * Save timeline state to LocalStorage\n */\n saveState(state: TimelineState): void {\n try {\n const serialized = JSON.stringify(state);\n localStorage.setItem(this.STORAGE_KEY, serialized);\n } catch (error) {\n console.error('Failed to save timeline state to LocalStorage:', error);\n }\n }\n\n /**\n * Load timeline state from LocalStorage\n * Returns null if no saved state exists or if loading fails\n */\n loadState(): TimelineState | null {\n try {\n const serialized = localStorage.getItem(this.STORAGE_KEY);\n if (serialized) {\n return JSON.parse(serialized) as TimelineState;\n }\n return null;\n } catch (error) {\n console.error('Failed to load timeline state from LocalStorage:', error);\n return null;\n }\n }\n\n /**\n * Clear timeline state from LocalStorage\n */\n clearState(): void {\n try {\n localStorage.removeItem(this.STORAGE_KEY);\n } catch (error) {\n console.error('Failed to clear timeline state from LocalStorage:', error);\n }\n }\n\n /**\n * Check if saved state exists\n */\n hasSavedState(): boolean {\n return localStorage.getItem(this.STORAGE_KEY) !== null;\n }\n}\n",
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[2025-12-07T21:04:47.890Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01ASdjaGjpEPPSX8jxTDQfyr","type":"tool_result","content":" 1β†’import { Component, signal, computed, ViewChild, ElementRef, AfterViewInit, OnDestroy, effect } from '@angular/core';\n 2β†’import { CommonModule } from '@angular/common';\n 3β†’import { MediaType, MediaItem, Track, TimelineState } from '../../models/timeline.models';\n 4β†’import { MediaLibraryComponent, MediaLibraryItem } from '../media-library/media-library.component';\n 5β†’import { Media***********onent } from '../media-toolbar/media-toolbar.component';\n 6β†’import { Notif************onent } from '../notifications/notifications.component';\n 7β†’import { Timel*************rvice } from '../../services/timeline-drag-drop.service';\n 8β†’import { PlaybackService } from '../../services/playback.service';\n 9β†’import { Timel************rvice } from '../../services/timeline-storage.service';\n 10β†’\n 11β†’@Component({\n 12β†’ selector: 'app-timeline',\n 13β†’ standalone: true,\n 14β†’ imports: [CommonModule, MediaLibraryComponent, MediaToolbarComponent, NotificationsComponent],\n 15β†’ templateUrl: './timeline.component.html',\n 16β†’ styleUrl: './timeline.component.css'\n 17β†’})\n 18β†’export class TimelineComponent implements AfterViewInit, OnDestroy {\n 19β†’ // Zoom levels: pixels per second\n 20β†’ private readonly MIN_ZOOM = 10;\n 21β†’ private readonly MAX_ZOOM = 200;\n 22β†’ private readonly ZOOM_STEP = 20;\n 23β†’ readonly TRACK_HEADER_WIDTH = 150; // Width of track header in pixels\n 24β†’ private readonly SNAP_PROXIMITY_MS = 500; // Snap to item if playhead is within 500ms\n 25β†’ private readonly MIN_ITEM_DURATION = 100; // Minimum item duration in milliseconds\n 26β†’\n 27β†’ // Canvas dimensions for preview\n 28β†’ readonly PREVIEW_WIDTH = 640;\n 29β†’ readonly PREVIEW_HEIGHT = 360;\n 30β†’\n 31β†’ // View references\n 32β†’ @ViewChild('timelineRuler') timelineRuler?: ElementRef<HTMLElement>;\n 33β†’ @ViewChild('notifications') notificationsComponent?: NotificationsComponent;\n 34β†’ @ViewChild('previewCanvas') previewCanvas?: ElementRef<HTMLCanvasElement>;\n 35β†’\n 36β†’ // Timeline state\n 37β†’ readonly state = signal<TimelineState>({\n 38β†’ tracks: [\n 39β†’ { id: '1', name: 'Track 1', order: 0, items: [] },\n 40β†’ { id: '2', name: 'Track 2', order: 1, items: [] }\n 41β†’ ],\n 42β†’ playheadPosition: 0,\n 43β†’ zoomLevel: 50, // pixels per second\n 44β†’ totalDuration: 120000, // 120 seconds in milliseconds\n 45β†’ selectedItemId: null\n 46β†’ });\n 47β†’\n 48β†’ // Computed values\n 49β†’ readonly pixel**********econd = computed(() => {\n 50β†’ return this.state().zoomLevel / 1000;\n 51β†’ });\n 52β†’\n 53β†’ readonly timelineWidth = computed(() => {\n 54β†’ const state = this.state();\n 55β†’ // Calculate the maximum end time across all tracks\n 56β†’ let maxEndTime = state.totalDuration;\n 57β†’\n 58β†’ for (const track of state.tracks) {\n 59β†’ for (const item of track.items) {\n 60β†’ const itemEndTime = item.startTime + item.duration;\n 61β†’ if (itemEndTime > maxEndTime) {\n 62β†’ maxEndTime = itemEndTime;\n 63β†’ }\n 64β†’ }\n 65β†’ }\n 66β†’\n 67β†’ return maxEndTime * this.pixelsPerMillisecond();\n 68β†’ });\n 69β†’\n 70β†’ readonly timelineLineHeight = computed(() => {\n 71β†’ const state = this.state();\n 72β†’ return state.tracks.length * 60 + 32;\n 73β†’ });\n 74β†’\n 75β†’ readonly playheadPosition = computed(() => {\n 76β†’ return this.state().playheadPosition * this.pixelsPerMillisecond();\n 77β†’ });\n 78β†’\n 79β†’ readonly playh************ition = computed(() => {\n 80β†’ return this.playheadPosition() + this.TRACK_HEADER_WIDTH;\n 81β†’ });\n 82β†’\n 83β†’ // Computed: whether a media item is currently selected\n 84β†’ readonly hasSelectedItem = computed(() => {\n 85β†’ return this.state().selectedItemId !== null;\n 86β†’ });\n 87β†’\n 88β†’ // Dragging state\n 89β†’ private draggedItem: MediaItem | null = null;\n 90β†’ private draggedItemOriginalTrackId: string | null = null;\n 91β†’ private dragOffsetTime: number = 0; // Offset in milliseconds from item start to cursor position\n 92β†’ private isDraggingPlayhead = false;\n 93β†’ private isDraggingFromRuler = false;\n 94β†’ private resizingItem: { item: MediaItem; edge: 'left' | 'right' } | null = null;\n 95β†’ private mouseDownPosition: { x: number; y: number } | null = null; // Track mouse down position for click detection\n 96β†’\n 97β†’ // Video preview state\n 98β†’ readonly isPlaying = signal<boolean>(false);\n 99β†’\n 100β†’ // Duration editor state\n 101β†’ readonly showDurationEditor = signal<boolean>(false);\n 102β†’ private editedDuration: number = 120; // Duration in seconds\n 103β†’\n 104β†’ // Media library state\n 105β†’ readonly showMediaLibrary = signal<boolean>(false);\n 106β†’ private mediaLibraryTargetTrackId: string | null = null;\n 107β†’\n 108β†’ // Clipboard state for copy/paste functionality\n 109β†’ private readonly clipboardItem = signal<MediaItem | null>(null);\n 110β†’ private readonly clipb************ackId = signal<string | null>(null);\n 111β†’\n 112β†’ // Computed: whether a media item is in clipboard\n 113β†’ readonly hasClipboardItem = computed(() => {\n 114β†’ return this.clipboardItem() !== null;\n 115β†’ });\n 116β†’\n 117β†’ // Render loop ID for cleanup\n 118β†’ private renderLoopId: number | null = null;\n 119β†’\n 120β†’ constructor(\n 121β†’ private dragDropService: TimelineDragDropService,\n 122β†’ public playbackService: PlaybackService,\n 123β†’ private storageService: TimelineStorageService\n 124β†’ ) {\n 125β†’ // Load saved state from LocalStorage on initialization\n 126β†’ const savedState = this.storageService.loadState();\n 127β†’ if (savedState) {\n 128β†’ this.state.set(savedState);\n 129β†’ }\n 130β†’\n 131β†’ // Effect to sync playhead position from PlaybackService during playback\n 132β†’ effect(() => {\n 133β†’ if (this.playbackService.isPlaying()) {\n 134β†’ const position = this.playbackService.playheadPosition();\n 135β†’ this.state.update(s => ({\n 136β†’ ...s,\n 137β†’ playheadPosition: position\n 138β†’ }));\n 139β†’ }\n 140β†’ });\n 141β†’\n 142β†’ // Effect to auto-save timeline state to LocalStorage on any change\n 143β†’ effect(() => {\n 144β†’ const currentState = this.state();\n 145β†’ this.storageService.saveState(currentState);\n 146β†’ });\n 147β†’ }\n 148β†’\n 149β†’ ngAfterViewInit(): void {\n 150β†’ // Initialize canvas for preview rendering\n 151β†’ if (this.previewCanvas) {\n 152β†’ this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n 153β†’ }\n 154β†’\n 155β†’ // Start continuous render loop for preview (renders current frame even when paused)\n 156β†’ this.startRenderLoop();\n 157β†’ }\n 158β†’\n 159β†’ ngOnDestroy(): void {\n 160β†’ // Clean up render loop\n 161β†’ if (this.renderLoopId !== null) {\n 162β†’ cancelAnimationFrame(this.renderLoopId);\n 163β†’ this.renderLoopId = null;\n 164β†’ }\n 165β†’\n 166β†’ // Stop playback\n 167β†’ this.playbackService.stop();\n 168β†’ }\n 169β†’\n 170β†’ /**\n 171β†’ * Continuous render loop for preview canvas.\n 172β†’ * Keeps rendering even when paused so seeking updates the preview.\n 173β†’ */\n 174β†’ private startRenderLoop(): void {\n 175β†’ const render = () => {\n 176β†’ // Only render if we have active media and are not playing\n 177β†’ // (PlaybackService handles rendering during playback)\n 178β†’ if (!this.playbackService.isPlaying()) {\n 179β†’ this.playbackService.renderCurrentFrame();\n 180β†’ }\n 181β†’ this.renderLoopId = requestAnimationFrame(render);\n 182β†’ };\n 183β†’ this.renderLoopId = requestAnimationFrame(render);\n 184β†’ }\n 185β†’\n 186β†’ // Track management\n 187β†’ addTrack(): void {\n 188β†’ const currentState = this.state();\n 189β†’ const newTrack: Track = {\n 190β†’ id: `track-${Date.now()}`,\n 191β†’ name: `Track ${currentState.tracks.length + 1}`,\n 192β†’ order: currentState.tracks.length,\n 193β†’ items: []\n 194β†’ };\n 195β†’\n 196β†’ this.state.update(s => ({\n 197β†’ ...s,\n 198β†’ tracks: [...s.tracks, newTrack]\n 199β†’ }));\n 200β†’ }\n 201β†’\n 202β†’ removeTrack(trackId: string): void {\n 203β†’ const currentState = this.state();\n 204β†’ if (currentState.tracks.length <= 1) {\n 205β†’ return; // Keep at least one track\n 206β†’ }\n 207β†’\n 208β†’ this.state.update(s => ({\n 209β†’ ...s,\n 210β†’ tracks: s.tracks.filter(t => t.id !== trackId)\n 211β†’ }));\n 212β†’ }\n 213β†’\n 214β†’ // Zoom controls\n 215β†’ zoomIn(): void {\n 216β†’ this.state.update(s => ({\n 217β†’ ...s,\n 218β†’ zoomLevel: Math.min(s.zoomLevel + this.ZOOM_STEP, this.MAX_ZOOM)\n 219β†’ }));\n 220β†’ }\n 221β†’\n 222β†’ zoomOut(): void {\n 223β†’ this.state.update(s => ({\n 224β†’ ...s,\n 225β†’ zoomLevel: Math.max(s.zoomLevel - this.ZOOM_STEP, this.MIN_ZOOM)\n 226β†’ }));\n 227β†’ }\n 228β†’\n 229β†’ // Utility method to extract coordinates from mouse or touch events\n 230β†’ private getEventCoordinates(event: MouseEvent | TouchEvent): { clientX: number; clientY: number } {\n 231β†’ if (event instanceof MouseEvent) {\n 232β†’ return { clientX: event.clientX, clientY: event.clientY };\n 233β†’ } else {\n 234β†’ const touch = event.touches[0] || event.changedTouches[0];\n 235β†’ return { clientX: touch.clientX, clientY: touch.clientY };\n 236β†’ }\n 237β†’ }\n 238β†’\n 239β†’ // Playhead controls\n 240β†’ onRulerPointerDown(event: MouseEvent | TouchEvent): void {\n 241β†’ event.preventDefault();\n 242β†’ this.isDraggingFromRuler = true;\n 243β†’\n 244β†’ // Immediately update position on pointer down\n 245β†’ const target = event.currentTarget as HTMLElement;\n 246β†’ const rect = target.getBoundingClientRect();\n 247β†’ const coords = this.getEventCoordinates(event);\n 248β†’ // Calculate position within the ruler element\n 249β†’ // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n 250β†’ const x = coords.clientX - rect.left;\n 251β†’ const newPosition = x / this.pixelsPerMillisecond();\n 252β†’ const currentState = this.state();\n 253β†’ const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n 254β†’\n 255β†’ this.state.update(s => ({\n 256β†’ ...s,\n 257β†’ playheadPosition: clampedPosition\n 258β†’ }));\n 259β†’\n 260β†’ // Sync position to playback service for seeking\n 261β†’ this.playbackService.seek(currentState.tracks, clampedPosition);\n 262β†’ }\n 263β†’\n 264β†’ onPlayheadPointerDown(event: MouseEvent | TouchEvent): void {\n 265β†’ event.preventDefault();\n 266β†’ event.stopPropagation();\n 267β†’ this.isDraggingPlayhead = true;\n 268β†’ }\n 269β†’\n 270β†’\n 271β†’ // Media item drag and drop\n 272β†’ onMediaItemPointerDown(event: MouseEvent | TouchEvent, item: MediaItem, track: Track): void {\n 273β†’ const target = event.target as HTMLElement;\n 274β†’\n 275β†’ // Check if clicking/touching on resize handle\n 276β†’ if (target.classList.contains('resize-handle')) {\n 277β†’ this.resizingItem = {\n 278β†’ item,\n 279β†’ edge: target.classList.contains('resize-handle-left') ? 'left' : 'right'\n 280β†’ };\n 281β†’ event.preventDefault();\n 282β†’ return;\n 283β†’ }\n 284β†’\n 285β†’ const coords = this.getEventCoordinates(event);\n 286β†’ this.mouseDownPosition = { x: coords.clientX, y: coords.clientY };\n 287β†’\n 288β†’ const mediaItemElement = event.currentTarget as HTMLElement;\n 289β†’ const rect = mediaItemElement.getBoundingClientRect();\n 290β†’ const clickX = coords.clientX - rect.left;\n 291β†’\n 292β†’ // Convert pixel offset to time offset\n 293β†’ this.dragOffsetTime = clickX / this.pixelsPerMillisecond();\n 294β†’\n 295β†’ this.draggedItem = item;\n 296β†’ this.draggedItemOriginalTrackId = track.id;\n 297β†’ event.preventDefault();\n 298β†’ }\n 299β†’\n 300β†’ onTrackPointerDown(event: MouseEvent | TouchEvent): void {\n 301β†’ // Deselect when clicking/touching track background (not on media item)\n 302β†’ const target = event.target as HTMLElement;\n 303β†’ if (target.classList.contains('track')) {\n 304β†’ this.deselectMediaItem();\n 305β†’ }\n 306β†’ }\n 307β†’\n 308β†’ onTrackPointerMove(event: MouseEvent | TouchEvent, track: Track): void {\n 309β†’ if (this.resizingItem) {\n 310β†’ this.handleResize(event, track);\n 311β†’ return;\n 312β†’ }\n 313β†’ event.preventDefault();\n 314β†’ event.stopPropagation();\n 315β†’\n 316β†’ if (!this.draggedItem) return;\n 317β†’\n 318β†’ const coords = this.getEventCoordinates(event);\n 319β†’ const target = event.currentTarget as HTMLElement;\n 320β†’ const rect = target.getBoundingClientRect();\n 321β†’ const x = coords.clientX - rect.left;\n 322β†’ const requestedStartTime = Math.max(0, x / this.pixelsPerMillisecond() - this.dragOffsetTime);\n 323β†’\n 324β†’ this.state.update(s => {\n 325β†’ const updatedTracks = s.tracks.map(t => {\n 326β†’ if (t.id === track.id) {\n 327β†’ // Get all items except the dragged one for collision detection\n 328β†’ const otherItems = t.items.filter(i => i.id !== this.draggedItem!.id);\n 329β†’\n 330β†’ // Fix for issue #81: Find snap targets (playhead and items on all tracks)\n 331β†’ const snapTargets = this.dragDropService.findSnapTargets(\n 332β†’ this.draggedItem!.id,\n 333β†’ s.tracks,\n 334β†’ s.playheadPosition\n 335β†’ );\n 336β†’\n 337β†’ // Calculate valid position and duration considering collisions, gap fitting, and snapping\n 338β†’ const validPosition = this.dragDropService.getValidDragPosition(\n 339β†’ this.draggedItem!,\n 340β†’ requestedStartTime,\n 341β†’ otherItems,\n 342β†’ s.totalDuration,\n 343β†’ snapTargets\n 344β†’ );\n 345β†’\n 346β†’ // Check if item already exists in this track\n 347β†’ const itemExists = t.items.some(i => i.id === this.draggedItem!.id);\n 348β†’\n 349β†’ if (itemExists) {\n 350β†’ // Update position and duration in current track\n 351β†’ return {\n 352β†’ ...t,\n 353β†’ items: t.items.map(i =>\n 354β†’ i.id === this.draggedItem!.id\n 355β†’ ? {\n 356β†’ ...i,\n 357β†’ startTime: validPosition.startTime,\n 358β†’ duration: validPosition.duration,\n 359β†’ trackId: track.id\n 360β†’ }\n 361β†’ : i\n 362β†’ )\n 363β†’ };\n 364β†’ } else {\n 365β†’ // Add to new track with adjusted position and duration\n 366β†’ return {\n 367β†’ ...t,\n 368β†’ items: [\n 369β†’ ...otherItems,\n 370β†’ {\n 371β†’ ...this.draggedItem!,\n 372β†’ startTime: validPosition.startTime,\n 373β†’ duration: validPosition.duration,\n 374β†’ trackId: track.id\n 375β†’ }\n 376β†’ ]\n 377β†’ };\n 378β†’ }\n 379β†’ } else if (t.id === this.draggedItemOriginalTrackId && t.id !== track.id) {\n 380β†’ // Remove from original track only if moving to different track\n 381β†’ return {\n 382β†’ ...t,\n 383β†’ items: t.items.filter(i => i.id !== this.draggedItem!.id)\n 384β†’ };\n 385β†’ }\n 386β†’ return t;\n 387β†’ });\n 388β†’\n 389β†’ // Update the original track ID to current track for smooth dragging within same track\n 390β†’ this.draggedItemOriginalTrackId = track.id;\n 391β†’\n 392β†’ return { ...s, tracks: updatedTracks };\n 393β†’ });\n 394β†’ }\n 395β†’\n 396β†’ private handleResize(event: MouseEvent | TouchEvent, track: Track): void {\n 397β†’ if (!this.resizingItem) return;\n 398β†’\n 399β†’ const coords = this.getEventCoordinates(event);\n 400β†’ const target = event.currentTarget as HTMLElement;\n 401β†’ const rect = target.getBoundingClientRect();\n 402β†’ // Fix for issue #83: getBoundingClientRect() returns viewport-relative coordinates,\n 403β†’ // and coords.clientX is also viewport-relative, so we don't need to add scrollLeft\n 404β†’ const x = coords.clientX - rect.left;\n 405β†’ const timeAtCursor = x / this.pixelsPerMillisecond();\n 406β†’\n 407β†’ this.state.update(s => {\n 408β†’ // Fix for issue #87: Find snap targets for resize operations\n 409β†’ const snapTargets = this.dragDropService.findSnapTargets(\n 410β†’ this.resizingItem!.item.id,\n 411β†’ s.tracks,\n 412β†’ s.playheadPosition\n 413β†’ );\n 414β†’\n 415β†’ const updatedTracks = s.tracks.map(t => {\n 416β†’ if (t.id === track.id) {\n 417β†’ // Get resize bounds considering adjacent items\n 418β†’ const bounds = this.dragDropService.getResizeBounds(\n 419β†’ this.resizingItem!.item,\n 420β†’ t.items,\n 421β†’ this.resizingItem!.edge,\n 422β†’ s.totalDuration\n 423β†’ );\n 424β†’\n 425β†’ return {\n 426β†’ ...t,\n 427β†’ items: t.items.map(i => {\n 428β†’ if (i.id === this.resizingItem!.item.id) {\n 429β†’ if (this.resizingItem!.edge === 'left') {\n 430β†’ // Fix for issue #89: Handle mediaStartTime when resizing from left\n 431β†’ // Apply snapping to left edge (start time)\n 432β†’ let newStartTime = Math.max(\n 433β†’ bounds.minTime,\n 434β†’ Math.min(timeAtCursor, bounds.maxTime)\n 435β†’ );\n 436β†’\n 437β†’ // Apply snapping if within snap distance\n 438β†’ let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n 439β†’ for (const target of snapTargets) {\n 440β†’ const distance = Math.abs(newStartTime - target);\n 441β†’ if (distance < minDistance) {\n 442β†’ minDistance = distance;\n 443β†’ // Only snap if within bounds\n 444β†’ if (target >= bounds.minTime && target <= bounds.maxTime) {\n 445β†’ newStartTime = target;\n 446β†’ }\n 447β†’ }\n 448β†’ }\n 449β†’\n 450β†’ // Calculate how much the timeline position is changing\n 451β†’ const deltaTime = newStartTime - i.startTime;\n 452β†’ const newDuration = i.duration - deltaTime;\n 453β†’\n 454β†’ // Update media start time (trimming from source media)\n 455β†’ const curre***********tTime = i.mediaStartTime || 0;\n 456β†’ const newMediaStartTime = curre***********tTime + deltaTime;\n 457β†’\n 458β†’ // Check if we're trying to extend beyond the start of source media\n 459β†’ if (newMediaStartTime < 0) {\n 460β†’ // Can only extend left by curre***********tTime amount\n 461β†’ const maxExtension = currentMediaStartTime;\n 462β†’ const finalStartTime = i.startTime - maxExtension;\n 463β†’ const finalDuration = i.duration + maxExtension;\n 464β†’\n 465β†’ // Ensure we don't exceed maxDuration\n 466β†’ if (i.maxDuration && finalDuration > i.maxDuration) {\n 467β†’ return {\n 468β†’ ...i,\n 469β†’ startTime: finalStartTime + (finalDuration - i.maxDuration),\n 470β†’ duration: i.maxDuration,\n 471β†’ mediaStartTime: 0\n 472β†’ };\n 473β†’ }\n 474β†’\n 475β†’ return {\n 476β†’ ...i,\n 477β†’ startTime: finalStartTime,\n 478β†’ duration: finalDuration,\n 479β†’ mediaStartTime: 0\n 480β†’ };\n 481β†’ }\n 482β†’\n 483β†’ // Ensure media end doesn't exceed maxDuration\n 484β†’ if (i.maxDuration && newMediaStartTime + newDuration > i.maxDuration) {\n 485β†’ const maxAllowedDuration = i.maxDuration - newMediaStartTime;\n 486β†’ return {\n 487β†’ ...i,\n 488β†’ startTime: i.startTime + (i.duration - maxAllowedDuration),\n 489β†’ duration: maxAllowedDuration,\n 490β†’ mediaStartTime: newMediaStartTime\n 491β†’ };\n 492β†’ }\n 493β†’\n 494β†’ return {\n 495β†’ ...i,\n 496β†’ startTime: newStartTime,\n 497β†’ duration: newDuration,\n 498β†’ mediaStartTime: newMediaStartTime\n 499β†’ };\n 500β†’ } else {\n 501β†’ // Fix for issue #87: Apply snapping to right edge (end time)\n 502β†’ let newEndTime = Math.max(\n 503β†’ bounds.minTime,\n 504β†’ Math.min(timeAtCursor, bounds.maxTime)\n 505β†’ );\n 506β†’\n 507β†’ // Apply snapping if within snap distance\n 508β†’ let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n 509β†’ for (const target of snapTargets) {\n 510β†’ const distance = Math.abs(newEndTime - target);\n 511β†’ if (distance < minDistance) {\n 512β†’ minDistance = distance;\n 513β†’ // Only snap if within bounds\n 514β†’ if (target >= bounds.minTime && target <= bounds.maxTime) {\n 515β†’ newEndTime = target;\n 516β†’ }\n 517β†’ }\n 518β†’ }\n 519β†’\n 520β†’ const newDuration = newEndTime - i.startTime;\n 521β†’\n 522β†’ // Limit duration by maxDuration if specified\n 523β†’ const limitedDuration = i.maxDuration\n 524β†’ ? Math.min(newDuration, i.maxDuration)\n 525β†’ : newDuration;\n 526β†’\n 527β†’ return { ...i, duration: limitedDuration };\n 528β†’ }\n 529β†’ }\n 530β†’ return i;\n 531β†’ })\n 532β†’ };\n 533β†’ }\n 534β†’ return t;\n 535β†’ });\n 536β†’\n 537β†’ return { ...s, tracks: updatedTracks };\n 538β†’ });\n 539β†’ }\n 540β†’\n 541β†’ onPointerUp(event: MouseEvent | TouchEvent): void {\n 542β†’ // Detect if this was a click/tap (not a drag) on a media item\n 543β†’ if (this.draggedItem && this.mouseDownPosition) {\n 544β†’ const coords = this.getEventCoordinates(event);\n 545β†’ const dx = coords.clientX - this.mouseDownPosition.x;\n 546β†’ const dy = coords.clientY - this.mouseDownPosition.y;\n 547β†’ const distance = Math.sqrt(dx * dx + dy * dy);\n 548β†’\n 549β†’ // If pointer moved less than 5 pixels, consider it a click/tap\n 550β†’ if (distance < 5) {\n 551β†’ this.selectMediaItem(this.draggedItem.id);\n 552β†’ }\n 553β†’ }\n 554β†’\n 555β†’ this.draggedItem = null;\n 556β†’ this.draggedItemOriginalTrackId = null;\n 557β†’ this.dragOffsetTime = 0;\n 558β†’ this.isDraggingPlayhead = false;\n 559β†’ this.isDraggingFromRuler = false;\n 560β†’ this.resizingItem = null;\n 561β†’ this.mouseDownPosition = null;\n 562β†’ }\n 563β†’\n 564β†’ onDocumentPointerMove(event: MouseEvent | TouchEvent): void {\n 565β†’ if (this.isDraggingPlayhead || this.isDraggingFromRuler) {\n 566β†’ // Fix for issue #50: Use ViewChild reference to ensure we use the exact same element as onRulerPointerDown\n 567β†’ if (!this.timelineRuler) {\n 568β†’ return;\n 569β†’ }\n 570β†’\n 571β†’ const coords = this.getEventCoordinates(event);\n 572β†’ const rulerElement = this.timelineRuler.nativeElement;\n 573β†’ // Use the same calculation as onRulerPointerDown\n 574β†’ // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n 575β†’ const rect = rulerElement.getBoundingClientRect();\n 576β†’ const x = coords.clientX - rect.left;\n 577β†’ const newPosition = x / this.pixelsPerMillisecond();\n 578β†’ const currentState = this.state();\n 579β†’ const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n 580β†’\n 581β†’ this.state.update(s => ({\n 582β†’ ...s,\n 583β†’ playheadPosition: clampedPosition\n 584β†’ }));\n 585β†’\n 586β†’ // Sync position to playback service for seeking (but don't call too frequently during drag)\n 587β†’ this.playbackService.seek(currentState.tracks, clampedPosition);\n 588β†’ }\n 589β†’\n 590β†’ // Fix for issue #96: Handle media item dragging and resizing at document level for touch events\n 591β†’ // This allows dragging between tracks on mobile devices\n 592β†’ if (event instanceof TouchEvent) {\n 593β†’ if (this.draggedItem) {\n 594β†’ // Find which track the touch is currently over\n 595β†’ const targetTrack = this.findTrackAtCoordinates(this.getEventCoordinates(event));\n 596β†’ if (targetTrack) {\n 597β†’ // Reuse existing drag logic\n 598β†’ this.onTrackPointerMove(event, targetTrack);\n 599β†’ }\n 600β†’ } else if (this.resizingItem) {\n 601β†’ // Find the track that contains the resizing item\n 602β†’ const targetTrack = this.findTrackContainingItem(this.resizingItem.item.id);\n 603β†’ if (targetTrack) {\n 604β†’ // Reuse existing resize logic\n 605β†’ this.handleResize(event, targetTrack);\n 606β†’ }\n 607β†’ }\n 608β†’ }\n 609β†’ }\n 610β†’\n 611β†’ // Helper method to find which track is at the given Y coordinate\n 612β†’ private findTrackAtCoordinates(coords: { clientX: number; clientY: number }): Track | null {\n 613β†’ const trackElements = document.querySelectorAll('.track');\n 614β†’ for (const trackElement of Array.from(trackElements)) {\n 615β†’ const rect = trackElement.getBoundingClientRect();\n 616β†’ if (coords.clientY >= rect.top && coords.clientY <= rect.bottom) {\n 617β†’ const trackIndex = Array.from(trackElements).indexOf(trackElement);\n 618β†’ const tracks = this.state().tracks;\n 619β†’ if (trackIndex >= 0 && trackIndex < tracks.length) {\n 620β†’ return tracks[trackIndex];\n 621β†’ }\n 622β†’ }\n 623β†’ }\n 624β†’ return null;\n 625β†’ }\n 626β†’\n 627β†’ // Helper method to find the track containing a specific item\n 628β†’ private findTrackContainingItem(itemId: string): Track | null {\n 629β†’ const currentState = this.state();\n 630β†’ for (const track of currentState.tracks) {\n 631β†’ if (track.items.some(item => item.id === itemId)) {\n 632β†’ return track;\n 633β†’ }\n 634β†’ }\n 635β†’ return null;\n 636β†’ }\n 637β†’\n 638β†’ // Helper methods\n 639β†’ getItemStyle(item: MediaItem) {\n 640β†’ return {\n 641β†’ left: `${item.startTime * this.pixelsPerMillisecond()}px`,\n 642β†’ width: `${item.duration * this.pixelsPerMillisecond()}px`\n 643β†’ };\n 644β†’ }\n 645β†’\n 646β†’ getMediaTypeClass(type: MediaType): string {\n 647β†’ return `media-${type}`;\n 648β†’ }\n 649β†’\n 650β†’ formatTime(milliseconds: number): string {\n 651β†’ const seconds = Math.floor(milliseconds / 1000);\n 652β†’ const minutes = Math.floor(seconds / 60);\n 653β†’ const remainingSeconds = seconds % 60;\n 654β†’ const cs = Math.floor((milliseconds % 1000) / 10);\n 655β†’ return `${minutes}:${remainingSeconds.toString().padStart(2, '0')}.${cs.toString().padStart(2, '0')}`;\n 656β†’ }\n 657β†’\n 658β†’ /**\n 659β†’ * Calculate appropriate time interval for markers based on zoom level\n 660β†’ * to prevent marker labels from overlapping\n 661β†’ */\n 662β†’ private getMarkerInterval(): number {\n 663β†’ // Minimum spacing between markers in pixels to prevent overlap\n 664β†’ // Enough space for \"0:00.000\" text (about 50-60px)\n 665β†’ const MIN_M***********NG_PX = 60;\n 666β†’\n 667β†’ // Calculate how much time represents MIN_M***********NG_PX at current zoom\n 668β†’ const pixelsPerMs = this.pixelsPerMillisecond();\n 669β†’ const minTimeSpacing = MIN_M***********NG_PX / pixelsPerMs;\n 670β†’\n 671β†’ // Define possible intervals (in ms): 100ms, 250ms, 500ms, 1s, 2s, 5s, 10s, 30s, 60s\n 672β†’ const intervals = [100, 250, 500, 1000, 2000, 5000, 10000, 30000, 60000];\n 673β†’\n 674β†’ // Find the smallest interval that's larger than or equal to minTimeSpacing\n 675β†’ for (const interval of intervals) {\n 676β†’ if (interval >= minTimeSpacing) {\n 677β†’ return interval;\n 678β†’ }\n 679β†’ }\n 680β†’\n 681β†’ // If even 60s is too small, use larger intervals\n 682β†’ return Math.ceil(minTimeSpacing / 60000) * 60000;\n 683β†’ }\n 684β†’\n 685β†’ getTimeMarkers(): { position: number; label: string }[] {\n 686β†’ const markers: { position: number; label: string }[] = [];\n 687β†’ const stepMs = this.getMarkerInterval(); // Dynamic interval based on zoom level\n 688β†’\n 689β†’ // Fix for issue #85: Do not show the last time mark at totalDuration\n 690β†’ // to prevent container expansion from the text label\n 691β†’ for (let time = 0; time < this.state().totalDuration; time += stepMs) {\n 692β†’ markers.push({\n 693β†’ position: time * this.pixelsPerMillisecond(),\n 694β†’ label: this.formatTime(time)\n 695β†’ });\n 696β†’ }\n 697β†’\n 698β†’ return markers;\n 699β†’ }\n 700β†’\n 701β†’ // Add placeholder media item\n 702β†’ addMediaItem(type: MediaType, trackId: string): void {\n 703β†’ const currentState = this.state();\n 704β†’ const track = currentState.tracks.find(t => t.id === trackId);\n 705β†’\n 706β†’ if (!track) return;\n 707β†’\n 708β†’ const playheadTime = currentState.playheadPosition;\n 709β†’ const totalDuration = currentState.totalDuration;\n 710β†’ const newItemDuration = type === MediaType.IMAGE ? 5000 : 3000;\n 711β†’\n 712β†’ // Determine the start time for the new item using the service\n 713β†’ const startTime = this.dragDropService.calculateNewItemStartTime(\n 714β†’ playheadTime,\n 715β†’ track.items,\n 716β†’ this.SNAP_PROXIMITY_MS\n 717β†’ );\n 718β†’\n 719β†’ // Fix for issue #48: Ensure new item doesn't exceed totalDuration\n 720β†’ const maxAllowedDuration = totalDuration - startTime;\n 721β†’ const finalDuration = Math.min(newItemDuration, maxAllowedDuration);\n 722β†’\n 723β†’ // Fix for issue #64: Verify that the new item doesn't overlap with any existing items\n 724β†’ const testItem: MediaItem = {\n 725β†’ id: 'temp',\n 726β†’ type,\n 727β†’ startTime,\n 728β†’ duration: finalDuration,\n 729β†’ trackId,\n 730β†’ name: '',\n 731β†’ isPlaceholder: true\n 732β†’ };\n 733β†’\n 734β†’ // Validate and adjust position if needed\n 735β†’ const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n 736β†’\n 737β†’ // Recalculate duration limit if position was adjusted\n 738β†’ const adjus****************ation = totalDuration - validatedStartTime;\n 739β†’ const adjustedDuration = Math.min(newItemDuration, adjustedMaxAllowedDuration);\n 740β†’\n 741β†’ // Create the final non-overlapping item\n 742β†’ const newItem: MediaItem = {\n 743β†’ id: `item-${Date.now()}`,\n 744β†’ type,\n 745β†’ startTime: validatedStartTime,\n 746β†’ duration: adjustedDuration,\n 747β†’ trackId,\n 748β†’ name: `${type} placeholder`,\n 749β†’ isPlaceholder: true\n 750β†’ };\n 751β†’\n 752β†’ // Set maxDuration for audio and video placeholders\n 753β†’ if (type === MediaType.VIDEO) {\n 754β†’ newItem.maxDuration = Math.min(10000, adjustedMaxAllowedDuration); // 10 seconds default for video\n 755β†’ } else if (type === MediaType.AUDIO) {\n 756β†’ newItem.maxDuration = Math.min(15000, adjustedMaxAllowedDuration); // 15 seconds default for audio\n 757β†’ }\n 758β†’\n 759β†’ this.state.update(s => ({\n 760β†’ ...s,\n 761β†’ tracks: s.tracks.map(t =>\n 762β†’ t.id === trackId\n 763β†’ ? { ...t, items: [...t.items, newItem] }\n 764β†’ : t\n 765β†’ )\n 766β†’ }));\n 767β†’ }\n 768β†’\n 769β†’ removeMediaItem(itemId: string, trackId: string): void {\n 770β†’ this.state.update(s => ({\n 771β†’ ...s,\n 772β†’ tracks: s.tracks.map(t =>\n 773β†’ t.id === trackId\n 774β†’ ? { ...t, items: t.items.filter(i => i.id !== itemId) }\n 775β†’ : t\n
[2025-12-07T21:04:47.898Z] [INFO] 776β†’ ),\n 777β†’ // Deselect if removing selected item\n 778β†’ selectedItemId: s.selectedItemId === itemId ? null : s.selectedItemId\n 779β†’ }));\n 780β†’ }\n 781β†’\n 782β†’ // Media selection\n 783β†’ selectMediaItem(itemId: string): void {\n 784β†’ this.state.update(s => ({\n 785β†’ ...s,\n 786β†’ selectedItemId: itemId\n 787β†’ }));\n 788β†’ }\n 789β†’\n 790β†’ deselectMediaItem(): void {\n 791β†’ this.state.update(s => ({\n 792β†’ ...s,\n 793β†’ selectedItemId: null\n 794β†’ }));\n 795β†’ }\n 796β†’\n 797β†’ isItemSelected(itemId: string): boolean {\n 798β†’ return this.state().selectedItemId === itemId;\n 799β†’ }\n 800β†’\n 801β†’ readonly MediaType = MediaType;\n 802β†’\n 803β†’ /**\n 804β†’ * Create a new project by clearing the timeline and LocalStorage\n 805β†’ */\n 806β†’ newProject(): void {\n 807β†’ // Stop playback if playing\n 808β†’ if (this.playbackService.isPlaying()) {\n 809β†’ this.playbackService.stop();\n 810β†’ this.isPlaying.set(false);\n 811β†’ }\n 812β†’\n 813β†’ // Reset timeline state to initial values\n 814β†’ this.state.set({\n 815β†’ tracks: [\n 816β†’ { id: '1', name: 'Track 1', order: 0, items: [] },\n 817β†’ { id: '2', name: 'Track 2', order: 1, items: [] }\n 818β†’ ],\n 819β†’ playheadPosition: 0,\n 820β†’ zoomLevel: 50,\n 821β†’ totalDuration: 120000,\n 822β†’ selectedItemId: null\n 823β†’ });\n 824β†’\n 825β†’ // Clear LocalStorage\n 826β†’ this.storageService.clearState();\n 827β†’\n 828β†’ // Show notification\n 829β†’ this.notificationsComponent?.showNotification(\n 830β†’ 'New project created. Timeline cleared.',\n 831β†’ 'success'\n 832β†’ );\n 833β†’ }\n 834β†’\n 835β†’ // Video preview controls\n 836β†’ togglePlayback(): void {\n 837β†’ const currentState = this.state();\n 838β†’\n 839β†’ if (this.playbackService.isPlaying()) {\n 840β†’ this.playbackService.pause();\n 841β†’ this.isPlaying.set(false);\n 842β†’ } else {\n 843β†’ // Sync playhead position to PlaybackService before starting\n 844β†’ this.playbackService.setPlayheadPosition(currentState.playheadPosition);\n 845β†’ this.playbackService.play(currentState.tracks, currentState.totalDuration);\n 846β†’ this.isPlaying.set(true);\n 847β†’ }\n 848β†’ }\n 849β†’\n 850β†’ skipBackward(): void {\n 851β†’ const currentState = this.state();\n 852β†’ const newPosition = Math.max(0, currentState.playheadPosition - 5000);\n 853β†’\n 854β†’ this.state.update(s => ({\n 855β†’ ...s,\n 856β†’ playheadPosition: newPosition\n 857β†’ }));\n 858β†’\n 859β†’ // Sync position and update media\n 860β†’ this.playbackService.seek(currentState.tracks, newPosition);\n 861β†’ }\n 862β†’\n 863β†’ skipForward(): void {\n 864β†’ const currentState = this.state();\n 865β†’ const newPosition = Math.min(currentState.totalDuration, currentState.playheadPosition + 5000);\n 866β†’\n 867β†’ this.state.update(s => ({\n 868β†’ ...s,\n 869β†’ playheadPosition: newPosition\n 870β†’ }));\n 871β†’\n 872β†’ // Sync position and update media\n 873β†’ this.playbackService.seek(currentState.tracks, newPosition);\n 874β†’ }\n 875β†’\n 876β†’ // Duration editor methods\n 877β†’ openDurationEditor(): void {\n 878β†’ this.editedDuration = this.state().totalDuration / 1000;\n 879β†’ this.showDurationEditor.set(true);\n 880β†’ }\n 881β†’\n 882β†’ closeDurationEditor(): void {\n 883β†’ this.showDurationEditor.set(false);\n 884β†’ }\n 885β†’\n 886β†’ onDurationInputChange(event: Event): void {\n 887β†’ const input = event.target as HTMLInputElement;\n 888β†’ const value = parseFloat(input.value);\n 889β†’ if (!isNaN(value) && value > 0) {\n 890β†’ this.editedDuration = value;\n 891β†’ }\n 892β†’ }\n 893β†’\n 894β†’ saveDuration(): void {\n 895β†’ const newDurationMs = Math.max(1000, this.editedDuration * 1000); // At least 1 second\n 896β†’ this.state.update(s => ({\n 897β†’ ...s,\n 898β†’ totalDuration: newDurationMs,\n 899β†’ // Ensure playhead doesn't exceed new duration\n 900β†’ playheadPosition: Math.min(s.playheadPosition, newDurationMs)\n 901β†’ }));\n 902β†’ this.closeDurationEditor();\n 903β†’ }\n 904β†’\n 905β†’ // Media library methods\n 906β†’ openMediaLibrary(trackId: string): void {\n 907β†’ this.mediaLibraryTargetTrackId = trackId;\n 908β†’ this.showMediaLibrary.set(true);\n 909β†’ }\n 910β†’\n 911β†’ closeMediaLibrary(): void {\n 912β†’ this.showMediaLibrary.set(false);\n 913β†’ this.mediaLibraryTargetTrackId = null;\n 914β†’ }\n 915β†’\n 916β†’ onMediaSelected(media: MediaLibraryItem): void {\n 917β†’ if (!this.mediaLibraryTargetTrackId) return;\n 918β†’\n 919β†’ const currentState = this.state();\n 920β†’ const track = currentState.tracks.find(t => t.id === this.mediaLibraryTargetTrackId);\n 921β†’\n 922β†’ if (!track) return;\n 923β†’\n 924β†’ const playheadTime = currentState.playheadPosition;\n 925β†’ const totalDuration = currentState.totalDuration;\n 926β†’\n 927β†’ // Determine the start time for the new item using the service\n 928β†’ const startTime = this.dragDropService.calculateNewItemStartTime(\n 929β†’ playheadTime,\n 930β†’ track.items,\n 931β†’ this.SNAP_PROXIMITY_MS\n 932β†’ );\n 933β†’\n 934β†’ // Ensure item doesn't exceed totalDuration\n 935β†’ const maxAllowedDuration = totalDuration - startTime;\n 936β†’ const finalDuration = Math.min(media.duration, maxAllowedDuration);\n 937β†’\n 938β†’ // Verify that the new item doesn't overlap with any existing items\n 939β†’ const testItem: MediaItem = {\n 940β†’ id: 'temp',\n 941β†’ type: media.type,\n 942β†’ startTime,\n 943β†’ duration: finalDuration,\n 944β†’ trackId: this.mediaLibraryTargetTrackId,\n 945β†’ name: '',\n 946β†’ isPlaceholder: false\n 947β†’ };\n 948β†’\n 949β†’ // Validate and adjust position if needed\n 950β†’ const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n 951β†’\n 952β†’ // Recalculate duration limit if position was adjusted\n 953β†’ const adjus****************ation = totalDuration - validatedStartTime;\n 954β†’ const adjustedDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n 955β†’\n 956β†’ // Create the final non-overlapping item\n 957β†’ const newItem: MediaItem = {\n 958β†’ id: `item-${Date.now()}`,\n 959β†’ type: media.type,\n 960β†’ startTime: validatedStartTime,\n 961β†’ duration: adjustedDuration,\n 962β†’ trackId: this.mediaLibraryTargetTrackId,\n 963β†’ name: media.name,\n 964β†’ url: media.url, // Pass URL from media library for playback\n 965β†’ isPlaceholder: false\n 966β†’ };\n 967β†’\n 968β†’ // Set maxDuration for audio and video\n 969β†’ if (media.type === MediaType.VIDEO) {\n 970β†’ newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n 971β†’ } else if (media.type === MediaType.AUDIO) {\n 972β†’ newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n 973β†’ }\n 974β†’\n 975β†’ this.state.update(s => ({\n 976β†’ ...s,\n 977β†’ tracks: s.tracks.map(t =>\n 978β†’ t.id === this.mediaLibraryTargetTrackId\n 979β†’ ? { ...t, items: [...t.items, newItem] }\n 980β†’ : t\n 981β†’ )\n 982β†’ }));\n 983β†’\n 984β†’ // Close the media library after selection\n 985β†’ this.closeMediaLibrary();\n 986β†’ }\n 987β†’\n 988β†’ /**\n 989β†’ * Trim (split) the selected media item at the playhead position.\n 990β†’ * Creates two separate items from the original media.\n 991β†’ */\n 992β†’ trimSelectedMedia(): void {\n 993β†’ const currentState = this.state();\n 994β†’ const selectedItemId = currentState.selectedItemId;\n 995β†’\n 996β†’ if (!selectedItemId) {\n 997β†’ return;\n 998β†’ }\n 999β†’\n 1000β†’ // Find the selected item and its track\n 1001β†’ let selectedItem: MediaItem | null = null;\n 1002β†’ let selectedTrack: Track | null = null;\n 1003β†’\n 1004β†’ for (const track of currentState.tracks) {\n 1005β†’ const item = track.items.find(i => i.id === selectedItemId);\n 1006β†’ if (item) {\n 1007β†’ selectedItem = item;\n 1008β†’ selectedTrack = track;\n 1009β†’ break;\n 1010β†’ }\n 1011β†’ }\n 1012β†’\n 1013β†’ if (!selectedItem || !selectedTrack) {\n 1014β†’ return;\n 1015β†’ }\n 1016β†’\n 1017β†’ const playheadTime = currentState.playheadPosition;\n 1018β†’ const itemStart = selectedItem.startTime;\n 1019β†’ const itemEnd = itemStart + selectedItem.duration;\n 1020β†’\n 1021β†’ // Check if playhead is within the selected media item\n 1022β†’ if (playheadTime <= itemStart || playheadTime >= itemEnd) {\n 1023β†’ // Playhead is not within the selected media - show notification\n 1024β†’ this.notificationsComponent?.showNotification(\n 1025β†’ 'Position the playhead within the selected media to trim it.',\n 1026β†’ 'warning'\n 1027β†’ );\n 1028β†’ return;\n 1029β†’ }\n 1030β†’\n 1031β†’ // Ensure both parts will have at least MIN_ITEM_DURATION\n 1032β†’ const firstPartDuration = playheadTime - itemStart;\n 1033β†’ const secondPartDuration = itemEnd - playheadTime;\n 1034β†’\n 1035β†’ if (firstPartDuration < this.MIN_ITEM_DURATION || secondPartDuration < this.MIN_ITEM_DURATION) {\n 1036β†’ this.notificationsComponent?.showNotification(\n 1037β†’ 'Cannot trim: resulting parts would be too short.',\n 1038β†’ 'warning'\n 1039β†’ );\n 1040β†’ return;\n 1041β†’ }\n 1042β†’\n 1043β†’ // Calculate mediaStartTime adjustments\n 1044β†’ const origi************tTime = selectedItem.mediaStartTime || 0;\n 1045β†’ const secon**************tTime = origi************tTime + firstPartDuration;\n 1046β†’\n 1047β†’ // Create two new items from the original\n 1048β†’ const firstPart: MediaItem = {\n 1049β†’ ...selectedItem,\n 1050β†’ id: `item-${Date.now()}-1`,\n 1051β†’ duration: firstPartDuration\n 1052β†’ // mediaStartTime stays the same for first part\n 1053β†’ };\n 1054β†’\n 1055β†’ const secondPart: MediaItem = {\n 1056β†’ ...selectedItem,\n 1057β†’ id: `item-${Date.now()}-2`,\n 1058β†’ startTime: playheadTime,\n 1059β†’ duration: secondPartDuration,\n 1060β†’ mediaStartTime: secondPartMediaStartTime\n 1061β†’ };\n 1062β†’\n 1063β†’ // Update the state: remove original, add two new parts\n 1064β†’ this.state.update(s => ({\n 1065β†’ ...s,\n 1066β†’ tracks: s.tracks.map(t => {\n 1067β†’ if (t.id === selectedTrack!.id) {\n 1068β†’ return {\n 1069β†’ ...t,\n 1070β†’ items: [\n 1071β†’ ...t.items.filter(i => i.id !== selectedItemId),\n 1072β†’ firstPart,\n 1073β†’ secondPart\n 1074β†’ ]\n 1075β†’ };\n 1076β†’ }\n 1077β†’ return t;\n 1078β†’ }),\n 1079β†’ // Deselect after trimming\n 1080β†’ selectedItemId: null\n 1081β†’ }));\n 1082β†’\n 1083β†’ this.notificationsComponent?.showNotification(\n 1084β†’ 'Media trimmed successfully.',\n 1085β†’ 'success'\n 1086β†’ );\n 1087β†’ }\n 1088β†’\n 1089β†’ /**\n 1090β†’ * Copy the selected media item to the clipboard.\n 1091β†’ * Stores a copy of the item and the track it was copied from.\n 1092β†’ */\n 1093β†’ copySelectedMedia(): void {\n 1094β†’ const currentState = this.state();\n 1095β†’ const selectedItemId = currentState.selectedItemId;\n 1096β†’\n 1097β†’ if (!selectedItemId) {\n 1098β†’ return;\n 1099β†’ }\n 1100β†’\n 1101β†’ // Find the selected item and its track\n 1102β†’ let selectedItem: MediaItem | null = null;\n 1103β†’ let selectedTrackId: string | null = null;\n 1104β†’\n 1105β†’ for (const track of currentState.tracks) {\n 1106β†’ const item = track.items.find(i => i.id === selectedItemId);\n 1107β†’ if (item) {\n 1108β†’ selectedItem = item;\n 1109β†’ selectedTrackId = track.id;\n 1110β†’ break;\n 1111β†’ }\n 1112β†’ }\n 1113β†’\n 1114β†’ if (!selectedItem || !selectedTrackId) {\n 1115β†’ return;\n 1116β†’ }\n 1117β†’\n 1118β†’ // Store a copy of the item in clipboard\n 1119β†’ this.clipboardItem.set({ ...selectedItem });\n 1120β†’ this.clipboardSourceTrackId.set(selectedTrackId);\n 1121β†’\n 1122β†’ this.notificationsComponent?.showNotification(\n 1123β†’ 'Media copied to clipboard.',\n 1124β†’ 'success'\n 1125β†’ );\n 1126β†’ }\n 1127β†’\n 1128β†’ /**\n 1129β†’ * Paste the clipboard media item at the playhead position.\n 1130β†’ * Pastes on the same track where the item was copied from.\n 1131β†’ * If there's no space at playhead position, finds the next available slot.\n 1132β†’ */\n 1133β†’ pasteMedia(): void {\n 1134β†’ const copiedItem = this.clipboardItem();\n 1135β†’ const sourceTrackId = this.clipboardSourceTrackId();\n 1136β†’\n 1137β†’ if (!copiedItem || !sourceTrackId) {\n 1138β†’ return;\n 1139β†’ }\n 1140β†’\n 1141β†’ const currentState = this.state();\n 1142β†’ const playheadTime = currentState.playheadPosition;\n 1143β†’ const totalDuration = currentState.totalDuration;\n 1144β†’\n 1145β†’ // Find the source track\n 1146β†’ let targetTrack = currentState.tracks.find(t => t.id === sourceTrackId);\n 1147β†’\n 1148β†’ // If source track no longer exists, use the first track\n 1149β†’ if (!targetTrack) {\n 1150β†’ targetTrack = currentState.tracks[0];\n 1151β†’ if (!targetTrack) {\n 1152β†’ this.notificationsComponent?.showNotification(\n 1153β†’ 'No tracks available to paste media.',\n 1154β†’ 'error'\n 1155β†’ );\n 1156β†’ return;\n 1157β†’ }\n 1158β†’ }\n 1159β†’\n 1160β†’ const itemDuration = copiedItem.duration;\n 1161β†’\n 1162β†’ // Try to find a valid position starting from playhead\n 1163β†’ const pastePosition = this.findPastePosition(\n 1164β†’ playheadTime,\n 1165β†’ itemDuration,\n 1166β†’ targetTrack.items,\n 1167β†’ totalDuration\n 1168β†’ );\n 1169β†’\n 1170β†’ if (pastePosition === null) {\n 1171β†’ this.notificationsComponent?.showNotification(\n 1172β†’ 'No space available to paste media on this track.',\n 1173β†’ 'warning'\n 1174β†’ );\n 1175β†’ return;\n 1176β†’ }\n 1177β†’\n 1178β†’ // Create a new item with a new ID\n 1179β†’ const newItem: MediaItem = {\n 1180β†’ ...copiedItem,\n 1181β†’ id: `item-${Date.now()}`,\n 1182β†’ startTime: pastePosition,\n 1183β†’ trackId: targetTrack.id\n 1184β†’ };\n 1185β†’\n 1186β†’ // Add the new item to the track\n 1187β†’ this.state.update(s => ({\n 1188β†’ ...s,\n 1189β†’ tracks: s.tracks.map(t =>\n 1190β†’ t.id === targetTrack!.id\n 1191β†’ ? { ...t, items: [...t.items, newItem] }\n 1192β†’ : t\n 1193β†’ )\n 1194β†’ }));\n 1195β†’\n 1196β†’ this.notificationsComponent?.showNotification(\n 1197β†’ 'Media pasted successfully.',\n 1198β†’ 'success'\n 1199β†’ );\n 1200β†’ }\n 1201β†’\n 1202β†’ /**\n 1203β†’ * Find a valid position to paste media item.\n 1204β†’ * First tries at the playhead position, then finds the next available gap.\n 1205β†’ */\n 1206β†’ private findPastePosition(\n 1207β†’ preferredPosition: number,\n 1208β†’ duration: number,\n 1209β†’ existingItems: MediaItem[],\n 1210β†’ totalDuration: number\n 1211β†’ ): number | null {\n 1212β†’ // Check if we can fit at the preferred position (playhead)\n 1213β†’ if (this.canFitAtPosition(preferredPosition, duration, existingItems, totalDuration)) {\n 1214β†’ return preferredPosition;\n 1215β†’ }\n 1216β†’\n 1217β†’ // Sort existing items by start time\n 1218β†’ const sortedItems = [...existingItems].sort((a, b) => a.startTime - b.startTime);\n 1219β†’\n 1220β†’ // Find all gaps on the track and try to place the item\n 1221β†’ const gaps = this.dragDropService.findAllGaps(sortedItems);\n 1222β†’\n 1223β†’ // First, try to find a gap that starts at or after the playhead\n 1224β†’ for (const gap of gaps) {\n 1225β†’ // Calculate actual gap size (considering totalDuration for infinite gaps)\n 1226β†’ const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n 1227β†’ const gapSize = effectiveGapEnd - gap.gapStart;\n 1228β†’\n 1229β†’ if (gap.gapStart >= preferredPosition && gapSize >= duration) {\n 1230β†’ return gap.gapStart;\n 1231β†’ }\n 1232β†’ }\n 1233β†’\n 1234β†’ // If no gap after playhead, try any gap that can fit the item\n 1235β†’ for (const gap of gaps) {\n 1236β†’ // Calculate actual gap size (considering totalDuration for infinite gaps)\n 1237β†’ const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n 1238β†’ const gapSize = effectiveGapEnd - gap.gapStart;\n 1239β†’\n 1240β†’ if (gapSize >= duration) {\n 1241β†’ return gap.gapStart;\n 1242β†’ }\n 1243β†’ }\n 1244β†’\n 1245β†’ // No suitable position found\n 1246β†’ return null;\n 1247β†’ }\n 1248β†’\n 1249β†’ /**\n 1250β†’ * Check if an item can fit at a specific position without overlapping.\n 1251β†’ */\n 1252β†’ private canFitAtPosition(\n 1253β†’ position: number,\n 1254β†’ duration: number,\n 1255β†’ existingItems: MediaItem[],\n 1256β†’ totalDuration: number\n 1257β†’ ): boolean {\n 1258β†’ // Check bounds\n 1259β†’ if (position < 0 || position + duration > totalDuration) {\n 1260β†’ return false;\n 1261β†’ }\n 1262β†’\n 1263β†’ // Check for overlaps with existing items\n 1264β†’ const endPosition = position + duration;\n 1265β†’ for (const item of existingItems) {\n 1266β†’ const itemEnd = item.startTime + item.duration;\n 1267β†’ // Check if there's an overlap\n 1268β†’ if (position < itemEnd && endPosition > item.startTime) {\n 1269β†’ return false;\n 1270β†’ }\n 1271β†’ }\n 1272β†’\n 1273β†’ return true;\n 1274β†’ }\n 1275β†’}\n 1276β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":"toolu_01BfCp1Qj5S7HXdPJ11Q5fxz","session_id":"d72d4e5a-5602-4ad4-bda1-87c785c0c8db","uuid":"da292c14-ae4f-45be-ba6f-795d964a8a33","tool_use_result":{"type":"text","file":{"filePath":"/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts","content":"import { Component, signal, computed, ViewChild, ElementRef, AfterViewInit, OnDestroy, effect } from '@angular/core';\nimport { CommonModule } from '@angular/common';\nimport { MediaType, MediaItem, Track, TimelineState } from '../../models/timeline.models';\nimport { MediaLibraryComponent, MediaLibraryItem } from '../media-library/media-library.component';\nimport { Media***********onent } from '../media-toolbar/media-toolbar.component';\nimport { Notif************onent } from '../notifications/notifications.component';\nimport { Timel*************rvice } from '../../services/timeline-drag-drop.service';\nimport { PlaybackService } from '../../services/playback.service';\nimport { Timel************rvice } from '../../services/timeline-storage.service';\n\n@Component({\n selector: 'app-timeline',\n standalone: true,\n imports: [CommonModule, MediaLibraryComponent, MediaToolbarComponent, NotificationsComponent],\n templateUrl: './timeline.component.html',\n styleUrl: './timeline.component.css'\n})\nexport class TimelineComponent implements AfterViewInit, OnDestroy {\n // Zoom levels: pixels per second\n private readonly MIN_ZOOM = 10;\n private readonly MAX_ZOOM = 200;\n private readonly ZOOM_STEP = 20;\n readonly TRACK_HEADER_WIDTH = 150; // Width of track header in pixels\n private readonly SNAP_PROXIMITY_MS = 500; // Snap to item if playhead is within 500ms\n private readonly MIN_ITEM_DURATION = 100; // Minimum item duration in milliseconds\n\n // Canvas dimensions for preview\n readonly PREVIEW_WIDTH = 640;\n readonly PREVIEW_HEIGHT = 360;\n\n // View references\n @ViewChild('timelineRuler') timelineRuler?: ElementRef<HTMLElement>;\n @ViewChild('notifications') notificationsComponent?: NotificationsComponent;\n @ViewChild('previewCanvas') previewCanvas?: ElementRef<HTMLCanvasElement>;\n\n // Timeline state\n readonly state = signal<TimelineState>({\n tracks: [\n { id: '1', name: 'Track 1', order: 0, items: [] },\n { id: '2', name: 'Track 2', order: 1, items: [] }\n ],\n playheadPosition: 0,\n zoomLevel: 50, // pixels per second\n totalDuration: 120000, // 120 seconds in milliseconds\n selectedItemId: null\n });\n\n // Computed values\n readonly pixel**********econd = computed(() => {\n return this.state().zoomLevel / 1000;\n });\n\n readonly timelineWidth = computed(() => {\n const state = this.state();\n // Calculate the maximum end time across all tracks\n let maxEndTime = state.totalDuration;\n\n for (const track of state.tracks) {\n for (const item of track.items) {\n const itemEndTime = item.startTime + item.duration;\n if (itemEndTime > maxEndTime) {\n maxEndTime = itemEndTime;\n }\n }\n }\n\n return maxEndTime * this.pixelsPerMillisecond();\n });\n\n readonly timelineLineHeight = computed(() => {\n const state = this.state();\n return state.tracks.length * 60 + 32;\n });\n\n readonly playheadPosition = computed(() => {\n return this.state().playheadPosition * this.pixelsPerMillisecond();\n });\n\n readonly playh************ition = computed(() => {\n return this.playheadPosition() + this.TRACK_HEADER_WIDTH;\n });\n\n // Computed: whether a media item is currently selected\n readonly hasSelectedItem = computed(() => {\n return this.state().selectedItemId !== null;\n });\n\n // Dragging state\n private draggedItem: MediaItem | null = null;\n private draggedItemOriginalTrackId: string | null = null;\n private dragOffsetTime: number = 0; // Offset in milliseconds from item start to cursor position\n private isDraggingPlayhead = false;\n private isDraggingFromRuler = false;\n private resizingItem: { item: MediaItem; edge: 'left' | 'right' } | null = null;\n private mouseDownPosition: { x: number; y: number } | null = null; // Track mouse down position for click detection\n\n // Video preview state\n readonly isPlaying = signal<boolean>(false);\n\n // Duration editor state\n readonly showDurationEditor = signal<boolean>(false);\n private editedDuration: number = 120; // Duration in seconds\n\n // Media library state\n readonly showMediaLibrary = signal<boolean>(false);\n private mediaLibraryTargetTrackId: string | null = null;\n\n // Clipboard state for copy/paste functionality\n private readonly clipboardItem = signal<MediaItem | null>(null);\n private readonly clipb************ackId = signal<string | null>(null);\n\n // Computed: whether a media item is in clipboard\n readonly hasClipboardItem = computed(() => {\n return this.clipboardItem() !== null;\n });\n\n // Render loop ID for cleanup\n private renderLoopId: number | null = null;\n\n constructor(\n private dragDropService: TimelineDragDropService,\n public playbackService: PlaybackService,\n private storageService: TimelineStorageService\n ) {\n // Load saved state from LocalStorage on initialization\n const savedState = this.storageService.loadState();\n if (savedState) {\n this.state.set(savedState);\n }\n\n // Effect to sync playhead position from PlaybackService during playback\n effect(() => {\n if (this.playbackService.isPlaying()) {\n const position = this.playbackService.playheadPosition();\n this.state.update(s => ({\n ...s,\n playheadPosition: position\n }));\n }\n });\n\n // Effect to auto-save timeline state to LocalStorage on any change\n effect(() => {\n const currentState = this.state();\n this.storageService.saveState(currentState);\n });\n }\n\n ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n }\n\n ngOnDestroy(): void {\n // Clean up render loop\n if (this.renderLoopId !== null) {\n cancelAnimationFrame(this.renderLoopId);\n this.renderLoopId = null;\n }\n\n // Stop playback\n this.playbackService.stop();\n }\n\n /**\n * Continuous render loop for preview canvas.\n * Keeps rendering even when paused so seeking updates the preview.\n */\n private startRenderLoop(): void {\n const render = () => {\n // Only render if we have active media and are not playing\n // (PlaybackService handles rendering during playback)\n if (!this.playbackService.isPlaying()) {\n this.playbackService.renderCurrentFrame();\n }\n this.renderLoopId = requestAnimationFrame(render);\n };\n this.renderLoopId = requestAnimationFrame(render);\n }\n\n // Track management\n addTrack(): void {\n const currentState = this.state();\n const newTrack: Track = {\n id: `track-${Date.now()}`,\n name: `Track ${currentState.tracks.length + 1}`,\n order: currentState.tracks.length,\n items: []\n };\n\n this.state.update(s => ({\n ...s,\n tracks: [...s.tracks, newTrack]\n }));\n }\n\n removeTrack(trackId: string): void {\n const currentState = this.state();\n if (currentState.tracks.length <= 1) {\n return; // Keep at least one track\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.filter(t => t.id !== trackId)\n }));\n }\n\n // Zoom controls\n zoomIn(): void {\n this.state.update(s => ({\n ...s,\n zoomLevel: Math.min(s.zoomLevel + this.ZOOM_STEP, this.MAX_ZOOM)\n }));\n }\n\n zoomOut(): void {\n this.state.update(s => ({\n ...s,\n zoomLevel: Math.max(s.zoomLevel - this.ZOOM_STEP, this.MIN_ZOOM)\n }));\n }\n\n // Utility method to extract coordinates from mouse or touch events\n private getEventCoordinates(event: MouseEvent | TouchEvent): { clientX: number; clientY: number } {\n if (event instanceof MouseEvent) {\n return { clientX: event.clientX, clientY: event.clientY };\n } else {\n const touch = event.touches[0] || event.changedTouches[0];\n return { clientX: touch.clientX, clientY: touch.clientY };\n }\n }\n\n // Playhead controls\n onRulerPointerDown(event: MouseEvent | TouchEvent): void {\n event.preventDefault();\n this.isDraggingFromRuler = true;\n\n // Immediately update position on pointer down\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n const coords = this.getEventCoordinates(event);\n // Calculate position within the ruler element\n // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n const x = coords.clientX - rect.left;\n const newPosition = x / this.pixelsPerMillisecond();\n const currentState = this.state();\n const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n\n this.state.update(s => ({\n ...s,\n playheadPosition: clampedPosition\n }));\n\n // Sync position to playback service for seeking\n this.playbackService.seek(currentState.tracks, clampedPosition);\n }\n\n onPlayheadPointerDown(event: MouseEvent | TouchEvent): void {\n event.preventDefault();\n event.stopPropagation();\n this.isDraggingPlayhead = true;\n }\n\n\n // Media item drag and drop\n onMediaItemPointerDown(event: MouseEvent | TouchEvent, item: MediaItem, track: Track): void {\n const target = event.target as HTMLElement;\n\n // Check if clicking/touching on resize handle\n if (target.classList.contains('resize-handle')) {\n this.resizingItem = {\n item,\n edge: target.classList.contains('resize-handle-left') ? 'left' : 'right'\n };\n event.preventDefault();\n return;\n }\n\n const coords = this.getEventCoordinates(event);\n this.mouseDownPosition = { x: coords.clientX, y: coords.clientY };\n\n const mediaItemElement = event.currentTarget as HTMLElement;\n const rect = mediaItemElement.getBoundingClientRect();\n const clickX = coords.clientX - rect.left;\n\n // Convert pixel offset to time offset\n this.dragOffsetTime = clickX / this.pixelsPerMillisecond();\n\n this.draggedItem = item;\n this.draggedItemOriginalTrackId = track.id;\n event.preventDefault();\n }\n\n onTrackPointerDown(event: MouseEvent | TouchEvent): void {\n // Deselect when clicking/touching track background (not on media item)\n const target = event.target as HTMLElement;\n if (target.classList.contains('track')) {\n this.deselectMediaItem();\n }\n }\n\n onTrackPointerMove(event: MouseEvent | TouchEvent, track: Track): void {\n if (this.resizingItem) {\n this.handleResize(event, track);\n return;\n }\n event.preventDefault();\n event.stopPropagation();\n\n if (!this.draggedItem) return;\n\n const coords = this.getEventCoordinates(event);\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n const x = coords.clientX - rect.left;\n const requestedStartTime = Math.max(0, x / this.pixelsPerMillisecond() - this.dragOffsetTime);\n\n this.state.update(s => {\n const updatedTracks = s.tracks.map(t => {\n if (t.id === track.id) {\n // Get all items except the dragged one for collision detection\n const otherItems = t.items.filter(i => i.id !== this.draggedItem!.id);\n\n // Fix for issue #81: Find snap targets (playhead and items on all tracks)\n const snapTargets = this.dragDropService.findSnapTargets(\n this.draggedItem!.id,\n s.tracks,\n s.playheadPosition\n );\n\n // Calculate valid position and duration considering collisions, gap fitting, and snapping\n const validPosition = this.dragDropService.getValidDragPosition(\n this.draggedItem!,\n requestedStartTime,\n otherItems,\n s.totalDuration,\n snapTargets\n );\n\n // Check if item already exists in this track\n const itemExists = t.items.some(i => i.id === this.draggedItem!.id);\n\n if (itemExists) {\n // Update position and duration in current track\n return {\n ...t,\n items: t.items.map(i =>\n i.id === this.draggedItem!.id\n ? {\n ...i,\n startTime: validPosition.startTime,\n duration: validPosition.duration,\n trackId: track.id\n }\n : i\n )\n };\n } else {\n // Add to new track with adjusted position and duration\n return {\n ...t,\n items: [\n ...otherItems,\n {\n ...this.draggedItem!,\n startTime: validPosition.startTime,\n duration: validPosition.duration,\n trackId: track.id\n }\n ]\n };\n }\n } else if (t.id === this.draggedItemOriginalTrackId && t.id !== track.id) {\n // Remove from original track only if moving to different track\n return {\n ...t,\n items: t.items.filter(i => i.id !== this.draggedItem!.id)\n };\n }\n return t;\n });\n\n // Update the original track ID to current track for smooth dragging within same track\n this.draggedItemOriginalTrackId = track.id;\n\n return { ...s, tracks: updatedTracks };\n });\n }\n\n private handleResize(event: MouseEvent | TouchEvent, track: Track): void {\n if (!this.resizingItem) return;\n\n const coords = this.getEventCoordinates(event);\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n // Fix for issue #83: getBoundingClientRect() returns viewport-relative coordinates,\n // and coords.clientX is also viewport-relative, so we don't need to add scrollLeft\n const x = coords.clientX - rect.left;\n const timeAtCursor = x / this.pixelsPerMillisecond();\n\n this.state.update(s => {\n // Fix for issue #87: Find snap targets for resize operations\n const snapTargets = this.dragDropService.findSnapTargets(\n this.resizingItem!.item.id,\n s.tracks,\n s.playheadPosition\n );\n\n const updatedTracks = s.tracks.map(t => {\n if (t.id === track.id) {\n // Get resize bounds considering adjacent items\n const bounds = this.dragDropService.getResizeBounds(\n this.resizingItem!.item,\n t.items,\n this.resizingItem!.edge,\n s.totalDuration\n );\n\n return {\n ...t,\n items: t.items.map(i => {\n if (i.id === this.resizingItem!.item.id) {\n if (this.resizingItem!.edge === 'left') {\n // Fix for issue #89: Handle mediaStartTime when resizing from left\n // Apply snapping to left edge (start time)\n let newStartTime = Math.max(\n bounds.minTime,\n Math.min(timeAtCursor, bounds.maxTime)\n );\n\n // Apply snapping if within snap distance\n let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n for (const target of snapTargets) {\n const distance = Math.abs(newStartTime - target);\n if (distance < minDistance) {\n minDistance = distance;\n // Only snap if within bounds\n if (target >= bounds.minTime && target <= bounds.maxTime) {\n newStartTime = target;\n }\n }\n }\n\n // Calculate how much the timeline position is changing\n const deltaTime = newStartTime - i.startTime;\n const newDuration = i.duration - deltaTime;\n\n // Update media start time (trimming from source media)\n const curre***********tTime = i.mediaStartTime || 0;\n const newMediaStartTime = curre***********tTime + deltaTime;\n\n // Check if we're trying to extend beyond the start of source media\n if (newMediaStartTime < 0) {\n // Can only extend left by curre***********tTime amount\n const maxExtension = currentMediaStartTime;\n const finalStartTime = i.startTime - maxExtension;\n const finalDuration = i.duration + maxExtension;\n\n // Ensure we don't exceed maxDuration\n if (i.maxDuration && finalDuration > i.maxDuration) {\n return {\n ...i,\n startTime: finalStartTime + (finalDuration - i.maxDuration),\n duration: i.maxDuration,\n mediaStartTime: 0\n };\n }\n\n return {\n ...i,\n startTime: finalStartTime,\n duration: finalDuration,\n mediaStartTime: 0\n };\n }\n\n // Ensure media end doesn't exceed maxDuration\n if (i.maxDuration && newMediaStartTime + newDuration > i.maxDuration) {\n const maxAllowedDuration = i.maxDuration - newMediaStartTime;\n return {\n ...i,\n startTime: i.startTime + (i.duration - maxAllowedDuration),\n duration: maxAllowedDuration,\n mediaStartTime: newMediaStartTime\n };\n }\n\n return {\n ...i,\n startTime: newStartTime,\n duration: newDuration,\n mediaStartTime: newMediaStartTime\n };\n } else {\n // Fix for issue #87: Apply snapping to right edge (end time)\n let newEndTime = Math.max(\n bounds.minTime,\n Math.min(timeAtCursor, bounds.maxTime)\n );\n\n // Apply snapping if within snap distance\n let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n for (const target of snapTargets) {\n const distance = Math.abs(newEndTime - target);\n if (distance < minDistance) {\n minDistance = distance;\n // Only snap if within bounds\n if (target >= bounds.minTime && target <= bounds.maxTime) {\n newEndTime = target;\n }\n }\n }\n\n const newDuration = newEndTime - i.startTime;\n\n // Limit duration by maxDuration if specified\n const limitedDuration = i.maxDuration\n ? Math.min(newDuration, i.maxDuration)\n : newDuration;\n\n return { ...i, duration: limitedDuration };\n }\n }\n return i;\n })\n };\n }\n return t;\n });\n\n return { ...s, tracks: updatedTracks };\n });\n }\n\n onPointerUp(event: MouseEvent | TouchEvent): void {\n // Detect if this was a click/tap (not a drag) on a media item\n if (this.draggedItem && this.mouseDownPosition) {\n const coords = this.getEventCoordinates(event);\n const dx = coords.clientX - this.mouseDownPosition.x;\n const dy = coords.clientY - this.mouseDownPosition.y;\n const distance = Math.sqrt(dx * dx + dy * dy);\n\n // If pointer moved less than 5 pixels, consider it a click/tap\n if (distance < 5) {\n this.selectMediaItem(this.draggedItem.id);\n }\n }\n\n this.draggedItem = null;\n this.draggedItemOriginalTrackId = null;\n this.dragOffsetTime = 0;\n this.isDraggingPlayhead = false;\n this.isDraggingFromRuler = false;\n this.resizingItem = null;\n this.mouseDownPosition = null;\n }\n\n onDocumentPointerMove(event: MouseEvent | TouchEvent): void {\n if (this.isDraggingPlayhead || this.isDraggingFromRuler) {\n // Fix for issue #50: Use ViewChild reference to ensure we use the exact same element as onRulerPointerDown\n if (!this.timelineRuler) {\n return;\n }\n\n const coords = this.getEventCoordinates(event);\n const rulerElement = this.timelineRuler.nativeElement;\n // Use the same calculation as onRulerPointerDown\n // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n const rect = rulerElement.getBoundingClientRect();\n const x = coords.clientX - rect.left;\n const newPosition = x / this.pixelsPerMillisecond();\n const currentState = this.state();\n const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n\n this.state.update(s => ({\n ...s,\n playheadPosition: clampedPosition\n }));\n\n // Sync position to playback service for seeking (but don't call too frequently during drag)\n this.playbackService.seek(currentState.tracks, clampedPosition);\n }\n\n // Fix for issue #96: Handle media item dragging and resizing at document level for touch events\n // This allows dragging between tracks on mobile devices\n if (event instanceof TouchEvent) {\n if (this.draggedItem) {\n // Find which track the touch is currently over\n const targetTrack = this.findTrackAtCoordinates(this.getEventCoordinates(event));\n if (targetTrack) {\n // Reuse existing drag logic\n this.onTrackPointerMove(event, targetTrack);\n }\n } else if (this.resizingItem) {\n // Find the track that contains the resizing item\n const targetTrack = this.findTrackContainingItem(this.resizingItem.item.id);\n if (targetTrack) {\n // Reuse existing resize logic\n this.handleResize(event, targetTrack);\n }\n }\n }\n }\n\n // Helper method to find which track is at the given Y coordinate\n private findTrackAtCoordinates(coords: { clientX: number; clientY: number }): Track | null {\n const trackElements = document.querySelectorAll('.track');\n for (const trackElement of Array.from(trackElements)) {\n const rect = trackElement.getBoundingClientRect();\n if (coords.clientY >= rect.top && coords.clientY <= rect.bottom) {\n const trackIndex = Array.from(trackElements).indexOf(trackElement);\n const tracks = this.state().tracks;\n if (trackIndex >= 0 && trackIndex < tracks.length) {\n return tracks[trackIndex];\n }\n }\n }\n return null;\n }\n\n // Helper method to find the track containing a specific item\n private findTrackContainingItem(itemId: string): Track | null {\n const currentState = this.state();\n for (const track of currentState.tracks) {\n if (track.items.some(item => item.id === itemId)) {\n return track;\n }\n }\n return null;\n }\n\n // Helper methods\n getItemStyle(item: MediaItem) {\n return {\n left: `${item.startTime * this.pixelsPerMillisecond()}px`,\n width: `${item.duration * this.pixelsPerMillisecond()}px`\n };\n }\n\n getMediaTypeClass(type: MediaType): string {\n return `media-${type}`;\n }\n\n formatTime(milliseconds: number): string {\n const seconds = Math.floor(milliseconds / 1000);\n const minutes = Math.floor(seconds / 60);\n const remainingSeconds = seconds % 60;\n const cs = Math.floor((milliseconds % 1000) / 10);\n return `${minutes}:${remainingSeconds.toString().padStart(2, '0')}.${cs.toString().padStart(2, '0')}`;\n }\n\n /**\n * Calculate appropriate time interval for markers based on zoom level\n * to prevent marker labels from overlapping\n */\n private getMarkerInterval(): number {\n // Minimum spacing between markers in pixels to prevent overlap\n // Enough space for \"0:00.000\" text (about 50-60px)\n const MIN_M***********NG_PX = 60;\n\n // Calculate how much time represents MIN_M***********NG_PX at current zoom\n const pixelsPerMs = this.pixelsPerMillisecond();\n const minTimeSpacing = MIN_M***********NG_PX / pixelsPerMs;\n\n // Define possible intervals (in ms): 100ms, 250ms, 500ms, 1s, 2s, 5s, 10s, 30s, 60s\n const intervals = [100, 250, 500, 1000, 2000, 5000, 10000, 30000, 60000];\n\n // Find the smallest interval that's larger than or equal to minTimeSpacing\n for (const interval of intervals) {\n if (interval >= minTimeSpacing) {\n return interval;\n }\n }\n\n // If even 60s is too small, use larger intervals\n return Math.ceil(minTimeSpacing / 60000) * 60000;\n }\n\n getTimeMarkers(): { position: number; label: string }[] {\n const markers: { position: number; label: string }[] = [];\n const stepMs = this.getMarkerInterval(); // Dynamic interval based on zoom level\n\n // Fix for issue #85: Do not show the last time mark at totalDuration\n // to prevent container expansion from the text label\n for (let time = 0; time < this.state().totalDuration; time += stepMs) {\n markers.push({\n position: time * this.pixelsPerMillisecond(),\n label: this.formatTime(time)\n });\n }\n\n return markers;\n }\n\n // Add placeholder media item\n addMediaItem(type: MediaType, trackId: string): void {\n const currentState = this.state();\n const track = currentState.tracks.find(t => t.id === trackId);\n\n if (!track) return;\n\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n const newItemDuration = type === MediaType.IMAGE ? 5000 : 3000;\n\n // Determine the start time for the new item using the service\n const startTime = this.dragDropService.calculateNewItemStartTime(\n playheadTime,\n track.items,\n this.SNAP_PROXIMITY_MS\n );\n\n // Fix for issue #48: Ensure new item doesn't exceed totalDuration\n const maxAllowedDuration = totalDuration - startTime;\n const finalDuration = Math.min(newItemDuration, maxAllowedDuration);\n\n // Fix for issue #64: Verify that the new item doesn't overlap with any existing items\n const testItem: MediaItem = {\n id: 'temp',\n type,\n startTime,\n duration: finalDuration,\n trackId,\n name: '',\n isPlaceholder: true\n };\n\n // Validate and adjust position if needed\n const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n\n // Recalculate duration limit if position was adjusted\n const adjus****************ation = totalDuration - validatedStartTime;\n const adjustedDuration = Math.min(newItemDuration, adjustedMaxAllowedDuration);\n\n // Create the final non-overlapping item\n const newItem: MediaItem = {\n id: `item-${Date.now()}`,\n type,\n startTime: validatedStartTime,\n duration: adjustedDuration,\n trackId,\n name: `${type} placeholder`,\n isPlaceholder: true\n };\n\n // Set maxDuration for audio and video placeholders\n if (type === MediaType.VIDEO) {\n newItem.maxDuration = Math.min(10000, adjustedMaxAllowedDuration); // 10 seconds default for video\n } else if (type === MediaType.AUDIO) {\n newItem.maxDuration = Math.min(15000, adjustedMaxAllowedDuration); // 15 seconds default for audio\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === trackId\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n }\n\n removeMediaItem(itemId: string, trackId: string): void {\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === trackId\n ? { ...t, items: t.items.filter(i => i.id !== itemId) }\n : t\n ),\n // Deselect if removing selected item\n selectedItemId: s.selectedItemId === itemId ? null : s.selectedItemId\n }));\n }\n\n // Media selection\n selectMediaItem(itemId: string): void {\n this.state.update(s => ({\n ...s,\n selectedItemId: itemId\n }));\n }\n\n deselectMediaItem(): void {\n this.state.update(s => ({\n ...s,\n selectedItemId: null\n }));\n }\n\n isItemSelected(itemId: string): boolean {\n return this.state().selectedItemId === itemId;\n }\n\n readonly MediaType = MediaType;\n\n /**\n * Create a new project by clearing the timeline and LocalStorage\n */\n newProject(): void {\n // Stop playback if playing\n if (this.playbackService.isPlaying()) {\n this.playbackService.stop();\n this.isPlaying.set(false);\n }\n\n // Reset timeline state to initial values\n this.state.set({\n tracks: [\n { id: '1', name: 'Track 1', order: 0, items: [] },\n { id: '2', name: 'Track 2', order: 1, items: [] }\n ],\n playheadPosition: 0,\n zoomLevel: 50,\n totalDuration: 120000,\n selectedItemId: null\n });\n\n // Clear LocalStorage\n this.storageService.clearState();\n\n // Show notification\n this.notificationsComponent?.showNotification(\n 'New project created. Timeline cleared.',\n 'success'\n );\n }\n\n // Video preview controls\n togglePlayback(): void {\n const currentState = this.state();\n\n if (this.playbackService.isPlaying()) {\n this.playbackService.pause();\n this.isPlaying.set(false);\n } else {\n // Sync playhead position to PlaybackService before starting\n this.playbackService.setPlayheadPosition(currentState.playheadPosition);\n this.playbackService.play(currentState.tracks, currentState.totalDuration);\n this.isPlaying.set(true);\n }\n }\n\n skipBackward(): void {\n const currentState = this.state();\n const newPosition = Math.max(0, currentState.playheadPosition - 5000);\n\n this.state.update(s => ({\n ...s,\n playheadPosition: newPosition\n }));\n\n // Sync position and update media\n this.playbackService.seek(currentState.tracks, newPosition);\n }\n\n skipForward(): void {\n const currentState = this.state();\n const newPosition = Math.min(currentState.totalDuration, currentState.playheadPosition + 5000);\n\n this.state.update(s => ({\n ...s,\n playheadPosition: newPosition\n }));\n\n // Sync position and update media\n this.playbackService.seek(currentState.tracks, newPosition);\n }\n\n // Duration editor methods\n openDurationEditor(): void {\n this.editedDuration = this.state().totalDuration / 1000;\n this.showDurationEditor.set(true);\n }\n\n closeDurationEditor(): void {\n this.showDurationEditor.set(false);\n }\n\n onDurationInputChange(event: Event): void {\n const input = event.target as HTMLInputElement;\n const value = parseFloat(input.value);\n if (!isNaN(value) && value > 0) {\n this.editedDuration = value;\n }\n }\n\n saveDuration(): void {\n const newDurationMs = Math.max(1000, this.editedDuration * 1000); // At least 1 second\n this.state.update(s => ({\n ...s,\n totalDuration: newDurationMs,\n // Ensure playhead doesn't exceed new duration\n playheadPosition: Math.min(s.playheadPosition, newDurationMs)\n }));\n this.closeDurationEditor();\n }\n\n // Media library methods\n openMediaLibrary(trackId: string): void {\n this.mediaLibraryTargetTrackId = trackId;\n this.showMediaLibrary.set(true);\n }\n\n closeMediaLibrary(): void {\n this.showMediaLibrary.set(false);\n this.mediaLibraryTargetTrackId = null;\n }\n\n onMediaSelected(media: MediaLibraryItem): void {\n if (!this.mediaLibraryTargetTrackId) return;\n\n const currentState = this.state();\n const track = currentState.tracks.find(t => t.id === this.mediaLibraryTargetTrackId);\n\n if (!track) return;\n\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n\n // Determine the start time for the new item using the service\n const startTime = this.dragDropService.calculateNewItemStartTime(\n playheadTime,\n track.items,\n this.SNAP_PROXIMITY_MS\n );\n\n // Ensure item doesn't exceed totalDuration\n const maxAllowedDuration = totalDuration - startTime;\n const finalDuration = Math.min(media.duration, maxAllowedDuration);\n\n // Verify that the new item doesn't overlap with any existing items\n const testItem: MediaItem = {\n id: 'temp',\n type: media.type,\n startTime,\n duration: finalDuration,\n trackId: this.mediaLibraryTargetTrackId,\n name: '',\n isPlaceholder: false\n };\n\n // Validate and adjust position if needed\n const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n\n // Recalculate duration limit if position was adjusted\n const adjus****************ation = totalDuration - validatedStartTime;\n const adjustedDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n\n // Create the final non-overlapping item\n const newItem: MediaItem = {\n id: `item-${Date.now()}`,\n type: media.type,\n startTime: validatedStartTime,\n duration: adjustedDuration,\n trackId: this.mediaLibraryTargetTrackId,\n name: media.name,\n url: media.url, // Pass URL from media library for playback\n isPlaceholder: false\n };\n\n // Set maxDuration for audio and video\n if (media.type === MediaType.VIDEO) {\n newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n } else if (media.type === MediaType.AUDIO) {\n newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === this.mediaLibraryTargetTrackId\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n\n // Close the media library after selection\n this.closeMediaLibrary();\n }\n\n /**\n * Trim (split) the selected media item at the playhead position.\n * Creates two separate items from the original media.\n */\n trimSelectedMedia(): void {\n const currentState = this.state();\n const selectedItemId = currentState.selectedItemId;\n\n if (!selectedItemId) {\n return;\n }\n\n // Find the selected item and its track\n let selectedItem: MediaItem | null = null;\n let selectedTrack: Track | null = null;\n\n for (const track of currentState.tracks) {\n const item = track.items.find(i => i.id === selectedItemId);\n if (item) {\n selectedItem = item;\n selectedTrack = track;\n break;\n }\n }\n\n if (!selectedItem || !selectedTrack) {\n return;\n }\n\n const playheadTime = currentState.playheadPosition;\n const itemStart = selectedItem.startTime;\n const itemEnd = itemStart + selectedItem.duration;\n\n // Check if playhead is within the selected media item\n if (playheadTime <= itemStart || playheadTime >= itemEnd) {\n // Playhead is not within the selected media - show notification\n this.notificationsComponent?.showNotification(\n 'Position the playhead within the selected media to trim it.',\n 'warning'\n );\n return;\n }\n\n // Ensure both parts will have at least MIN_ITEM_DURATION\n const firstPartDuration = playheadTime - itemStart;\n const secondPartDuration = itemEnd - playheadTime;\n\n if (firstPartDuration < this.MIN_ITEM_DURATION || secondPartDuration < this.MIN_ITEM_DURATION) {\n this.notificationsComponent?.showNotification(\n 'Cannot trim: resulting parts would be too short.',\n 'warning'\n );\n return;\n }\n\n // Calculate mediaStartTime adjustments\n const origi************tTime = selectedItem.mediaStartTime || 0;\n const secon**************tTime = origi************tTime + firstPartDuration;\n\n // Create two new items from the original\n const firstPart: MediaItem = {\n ...selectedItem,\n id: `item-${Date.now()}-1`,\n duration: firstPartDuration\n // mediaStartTime stays the same for first part\n };\n\n const secondPart: MediaItem = {\n ...selectedItem,\n id: `item-${Date.now()}-2`,\n startTime: playheadTime,\n duration: secondPartDuration,\n mediaStartTime: secondPartMediaStartTime\n };\n\n // Update the state: remove original, add two new parts\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t => {\n if (t.id === selectedTrack!.id) {\n return {\n ...t,\n items: [\n ...t.items.filter(i => i.id !== selectedItemId),\n firstPart,\n secondPart\n ]\n };\n }\n return t;\n }),\n // Deselect after trimming\n selectedItemId: null\n }));\n\n this.notificationsComponent?.showNotification(\n 'Media trimmed successfully.',\n 'success'\n );\n }\n\n /**\n * Copy the selected media item to the clipboard.\n * Stores a copy of the item and the track it was copied from.\n */\n copySelectedMedia(): void {\n const currentState = this.state();\n const selectedItemId = currentState.selectedItemId;\n\n if (!selectedItemId) {\n return;\n }\n\n // Find the selected item and its track\n let selectedItem: MediaItem | null = null;\n let selectedTrackId: string | null = null;\n\n for (const track of currentState.tracks) {\n const item = track.items.find(i => i.id === selectedItemId);\n if (item) {\n selectedItem = item;\n selectedTrackId = track.id;\n break;\n }\n }\n\n if (!selectedItem || !selectedTrackId) {\n return;\n }\n\n // Store a copy of the item in clipboard\n this.clipboardItem.set({ ...selectedItem });\n this.clipboardSourceTrackId.set(selectedTrackId);\n\n this.notificationsComponent?.showNotification(\n 'Media copied to clipboard.',\n 'success'\n );\n }\n\n /**\n * Paste the clipboard media item at the playhead position.\n * Pastes on the same track where the item was copied from.\n * If there's no space at playhead position, finds the next available slot.\n */\n pasteMedia(): void {\n const copiedItem = this.clipboardItem();\n const sourceTrackId = this.clipboardSourceTrackId();\n\n if (!copiedItem || !sourceTrackId) {\n return;\n }\n\n const currentState = this.state();\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n\n // Find the source track\n let targetTrack = currentState.tracks.find(t => t.id === sourceTrackId);\n\n // If source track no longer exists, use the first track\n if (!targetTrack) {\n targetTrack = currentState.tracks[0];\n if (!targetTrack) {\n this.notificationsComponent?.showNotification(\n 'No tracks available to paste media.',\n 'error'\n );\n return;\n }\n }\n\n const itemDuration = copiedItem.duration;\n\n // Try to find a valid position starting from playhead\n const pastePosition = this.findPastePosition(\n playheadTime,\n itemDuration,\n targetTrack.items,\n totalDuration\n );\n\n if (pastePosition === null) {\n this.notificationsComponent?.showNotification(\n 'No space available to paste media on this track.',\n 'warning'\n );\n return;\n }\n\n // Create a new item with a new ID\n const newItem: MediaItem = {\n ...copiedItem,\n id: `item-${Date.now()}`,\n startTime: pastePosition,\n trackId: targetTrack.id\n };\n\n // Add the new item to the track\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === targetTrack!.id\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n\n this.notificationsComponent?.showNotification(\n 'Media pasted successfully.',\n 'success'\n );\n }\n\n /**\n * Find a valid position to paste media item.\n * First tries at the playhead position, then finds the next available gap.\n */\n private findPastePosition(\n preferredPosition: number,\n duration: number,\n existingItems: MediaItem[],\n totalDuration: number\n ): number | null {\n // Check if we can fit at the preferred position (playhead)\n if (this.canFitAtPosition(preferredPosition, duration, existingItems, totalDuration)) {\n return preferredPosition;\n }\n\n // Sort existing items by start time\n const sortedItems = [...existingItems].sort((a, b) => a.startTime - b.startTime);\n\n // Find all gaps on the track and try to place the item\n const gaps = this.dragDropService.findAllGaps(sortedItems);\n\n // First, try to find a gap that starts at or after the playhead\n for (const gap of gaps) {\n // Calculate actual gap size (considering totalDuration for infinite gaps)\n const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n const gapSize = effectiveGapEnd - gap.gapStart;\n\n if (gap.gapStart >= preferredPosition && gapSize >= duration) {\n return gap.gapStart;\n }\n }\n\n // If no gap after playhead, try any gap that can fit the item\n for (const gap of gaps) {\n // Calculate actual gap size (considering totalDuration for infinite gaps)\n const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n const gapSize = effectiveGapEnd - gap.gapStart;\n\n if (gapSize >= duration) {\n return gap.gapStart;\n }\n }\n\n // No suitable position found\n return null;\n }\n\n /**\n * Check if an item can fit at a specific position without overlapping.\n */\n private canFitAtPosition(\n position: number,\n duration: number,\n existingItems: MediaItem[],\n totalDuration: number\n ): boolean {\n // Check bounds\n if (position < 0 || position + duration > totalDuration) {\n return false;\n }\n\n // Check for overlaps with existing items\n const endPosition = position + duration;\n for (const item of existingItems) {\n const itemEnd = item.startTime + item.duration;\n // Check if there's an overlap\n if (position < itemEnd && endPosition > item.startTime) {\n return false;\n }\n }\n\n return true;\n }\n}\n","numLines":1276,"startLine":1,"totalLines":1276}}}
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"content": " 1β†’import { Injectable, signal, computed } from '@angular/core';\n 2β†’import { MediaItem, MediaType, Track } from '../models/timeline.models';\n 3β†’\n 4β†’/**\n 5β†’ * Represents an active media element being played\n 6β†’ */\n 7β†’export interface ActiveMedia {\n 8β†’ item: MediaItem;\n 9β†’ element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n 10β†’ trackOrder: number; // For layering: higher order = rendered first (bottom layer)\n 11β†’}\n 12β†’\n 13β†’/**\n 14β†’ * Service responsible for managing real media playback.\n 15β†’ * Handles synchronization of media elements with timeline playhead position.\n 16β†’ */\n 17β†’@Injectable({\n 18β†’ providedIn: 'root'\n 19β†’})\n 20β†’export class PlaybackService {\n 21β†’ // Playback state\n 22β†’ private _isPlaying = signal<boolean>(false);\n 23β†’ private _playheadPosition = signal<number>(0);\n 24β†’ private animationFrameId: number | null = null;\n 25β†’ private lastFrameTime: number = 0;\n 26β†’\n 27β†’ // Active media elements\n 28β†’ private activeMediaMap = new Map<string, ActiveMedia>();\n 29β†’\n 30β†’ // Canvas reference for rendering\n 31β†’ private canvas: HTMLCanvasElement | null = null;\n 32β†’ private canvasContext: Canva**************ext2D | null = null;\n 33β†’\n 34β†’ // Exposed signals\n 35β†’ readonly isPlaying = this._isPlaying.asReadonly();\n 36β†’ readonly playheadPosition = this._playheadPosition.asReadonly();\n 37β†’\n 38β†’ // Computed: current active media items for rendering\n 39β†’ readonly activeMediaItems = computed(() => {\n 40β†’ return Array.from(this.activeMediaMap.values())\n 41β†’ .sort((a, b) => b.trackOrder - a.trackOrder);\n 42β†’ });\n 43β†’\n 44β†’ constructor() {}\n 45β†’\n 46β†’ /**\n 47β†’ * Set the canvas element for rendering video/image preview\n 48β†’ */\n 49β†’ setCanvas(canvas: HTMLCanvasElement): void {\n 50β†’ this.canvas = canvas;\n 51β†’ this.canvasContext = canvas.getContext('2d');\n 52β†’ }\n 53β†’\n 54β†’ /**\n 55β†’ * Update playhead position (called from timeline component)\n 56β†’ */\n 57β†’ setPlayheadPosition(position: number): void {\n 58β†’ this._playheadPosition.set(position);\n 59β†’ }\n 60β†’\n 61β†’ /**\n 62β†’ * Start playback\n 63β†’ */\n 64β†’ play(tracks: Track[], totalDuration: number): void {\n 65β†’ if (this._isPlaying()) return;\n 66β†’\n 67β†’ this._isPlaying.set(true);\n 68β†’\n 69β†’ // Start playing any already-loaded media elements\n 70β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 71β†’ if (activeMedia.element instanceof HTMLVideoElement) {\n 72β†’ const videoElement = activeMedia.element as HTMLVideoElement;\n 73β†’ videoElement.play().catch(() => {\n 74β†’ // Autoplay may be blocked, try muted\n 75β†’ videoElement.muted = true;\n 76β†’ videoElement.play().catch(() => {});\n 77β†’ });\n 78β†’ } else if (activeMedia.element instanceof HTMLAudioElement) {\n 79β†’ activeMedia.element.play().catch(() => {});\n 80β†’ }\n 81β†’ }\n 82β†’\n 83β†’ this.lastFrameTime = performance.now();\n 84β†’ this.startPlaybackLoop(tracks, totalDuration);\n 85β†’ }\n 86β†’\n 87β†’ /**\n 88β†’ * Pause playback\n 89β†’ */\n 90β†’ pause(): void {\n 91β†’ this._isPlaying.set(false);\n 92β†’ if (this.animationFrameId !== null) {\n 93β†’ cancelAnimationFrame(this.animationFrameId);\n 94β†’ this.animationFrameId = null;\n 95β†’ }\n 96β†’\n 97β†’ // Pause all active media\n 98β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 99β†’ if (activeMedia.element instanceof HTMLVideoElement ||\n 100β†’ activeMedia.element instanceof HTMLAudioElement) {\n 101β†’ activeMedia.element.pause();\n 102β†’ }\n 103β†’ }\n 104β†’ }\n 105β†’\n 106β†’ /**\n 107β†’ * Stop playback and reset position\n 108β†’ */\n 109β†’ stop(): void {\n 110β†’ this.pause();\n 111β†’ this._playheadPosition.set(0);\n 112β†’ this.cleanupAllMedia();\n 113β†’ }\n 114β†’\n 115β†’ /**\n 116β†’ * Main playback loop - advances playhead and synchronizes media\n 117β†’ */\n 118β†’ private startPlaybackLoop(tracks: Track[], totalDuration: number): void {\n 119β†’ const animate = (currentTime: number) => {\n 120β†’ if (!this._isPlaying()) return;\n 121β†’\n 122β†’ // Calculate delta time\n 123β†’ const deltaTime = currentTime - this.lastFrameTime;\n 124β†’ this.lastFrameTime = currentTime;\n 125β†’\n 126β†’ // Update playhead position\n 127β†’ let newPosition = this._playheadPosition() + deltaTime;\n 128β†’\n 129β†’ // Check if we've reached the end\n 130β†’ if (newPosition >= totalDuration) {\n 131β†’ newPosition = totalDuration;\n 132β†’ this.pause();\n 133β†’ }\n 134β†’\n 135β†’ this._playheadPosition.set(newPosition);\n 136β†’\n 137β†’ // Synchronize media with new position\n 138β†’ this.synchronizeMedia(tracks, newPosition);\n 139β†’\n 140β†’ // Render to canvas\n 141β†’ this.renderToCanvas();\n 142β†’\n 143β†’ // Continue animation loop\n 144β†’ if (this._isPlaying()) {\n 145β†’ this.animationFrameId = requestAnimationFrame(animate);\n 146β†’ }\n 147β†’ };\n 148β†’\n 149β†’ this.animationFrameId = requestAnimationFrame(animate);\n 150β†’ }\n 151β†’\n 152β†’ /**\n 153β†’ * Synchronize media elements with the current playhead position.\n 154β†’ * Start/stop media as playhead enters/exits their time range.\n 155β†’ */\n 156β†’ private synchronizeMedia(tracks: Track[], playheadTime: number): void {\n 157β†’ // Collect all items that should be active at current time\n 158β†’ const shouldBeActive = new Map<string, { item: MediaItem; trackOrder: number }>();\n 159β†’\n 160β†’ for (const track of tracks) {\n 161β†’ for (const item of track.items) {\n 162β†’ const itemEnd = item.startTime + item.duration;\n 163β†’\n 164β†’ // Check if playhead is within item's time range\n 165β†’ if (playheadTime >= item.startTime && playheadTime < itemEnd) {\n 166β†’ // Skip placeholders without URL\n 167β†’ if (item.isPlaceholder || !item.url) continue;\n 168β†’\n 169β†’ shouldBeActive.set(item.id, { item, trackOrder: track.order });\n 170β†’ }\n 171β†’ }\n 172β†’ }\n 173β†’\n 174β†’ // Stop media that should no longer be active\n 175β†’ for (const [id, activeMedia] of this.activeMediaMap.entries()) {\n 176β†’ if (!shouldBeActive.has(id)) {\n 177β†’ this.stopMedia(activeMedia);\n 178β†’ this.activeMediaMap.delete(id);\n 179β†’ }\n 180β†’ }\n 181β†’\n 182β†’ // Start or update media that should be active\n 183β†’ for (const [id, { item, trackOrder }] of shouldBeActive.entries()) {\n 184β†’ if (!this.activeMediaMap.has(id)) {\n 185β†’ // Start new media\n 186β†’ this.startMedia(item, trackOrder, playheadTime);\n 187β†’ } else {\n 188β†’ // Update existing media position if needed\n 189β†’ this.updateMediaPosition(this.activeMediaMap.get(id)!, playheadTime);\n 190β†’ }\n 191β†’ }\n 192β†’ }\n 193β†’\n 194β†’ /**\n 195β†’ * Start playing a media item\n 196β†’ */\n 197β†’ private startMedia(item: MediaItem, trackOrder: number, playheadTime: number): void {\n 198β†’ if (!item.url) return;\n 199β†’\n 200β†’ const mediaStartTime = item.mediaStartTime || 0;\n 201β†’ const offsetInItem = playheadTime - item.startTime;\n 202β†’ const mediaTime = (mediaStartTime + offsetInItem) / 1000; // Convert to seconds\n 203β†’\n 204β†’ let element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n 205β†’\n 206β†’ switch (item.type) {\n 207β†’ case MediaType.VIDEO:\n 208β†’ element = document.createElement('video');\n 209β†’ (element as HTMLVideoElement).src = item.url;\n 210β†’ (element as HTMLVideoElement).currentTime = mediaTime;\n 211β†’ (element as HTMLVideoElement).muted = false;\n 212β†’ // Only play if playback is active\n 213β†’ if (this._isPlaying()) {\n 214β†’ (element as HTMLVideoElement).play().catch(() => {\n 215β†’ // Autoplay may be blocked, try muted\n 216β†’ (element as HTMLVideoElement).muted = true;\n 217β†’ (element as HTMLVideoElement).play().catch(() => {});\n 218β†’ });\n 219β†’ }\n 220β†’ break;\n 221β†’\n 222β†’ case MediaType.AUDIO:\n 223β†’ element = document.createElement('audio');\n 224β†’ (element as HTMLAudioElement).src = item.url;\n 225β†’ (element as HTMLAudioElement).currentTime = mediaTime;\n 226β†’ // Only play if playback is active\n 227β†’ if (this._isPlaying()) {\n 228β†’ (element as HTMLAudioElement).play().catch(() => {});\n 229β†’ }\n 230β†’ break;\n 231β†’\n 232β†’ case MediaType.IMAGE:\n 233β†’ element = document.createElement('img');\n 234β†’ (element as HTMLImageElement).src = item.url;\n 235β†’ (element as HTMLImageElement).crossOrigin = 'anonymous';\n 236β†’ break;\n 237β†’\n 238β†’ default:\n 239β†’ return;\n 240β†’ }\n 241β†’\n 242β†’ // For video, also set crossOrigin for canvas rendering\n 243β†’ if (element instanceof HTMLVideoElement) {\n 244β†’ element.crossOrigin = 'anonymous';\n 245β†’ }\n 246β†’\n 247β†’ this.activeMediaMap.set(item.id, { item, element, trackOrder });\n 248β†’ }\n 249β†’\n 250β†’ /**\n 251β†’ * Stop and cleanup a media element\n 252β†’ */\n 253β†’ private stopMedia(activeMedia: ActiveMedia): void {\n 254β†’ const { element } = activeMedia;\n 255β†’\n 256β†’ if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n 257β†’ element.pause();\n 258β†’ element.src = '';\n 259β†’ element.load();\n 260β†’ }\n 261β†’ }\n 262β†’\n 263β†’ /**\n 264β†’ * Update media playback position if it's out of sync\n 265β†’ */\n 266β†’ private updateMediaPosition(activeMedia: ActiveMedia, playheadTime: number): void {\n 267β†’ const { item, element } = activeMedia;\n 268β†’\n 269β†’ if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n 270β†’ const mediaStartTime = item.mediaStartTime || 0;\n 271β†’ const offsetInItem = playheadTime - item.startTime;\n 272β†’ const expectedMediaTime = (mediaStartTime + offsetInItem) / 1000;\n 273β†’ const currentMediaTime = element.currentTime;\n 274β†’\n 275β†’ // If more than 0.3 seconds out of sync, seek to correct position\n 276β†’ if (Math.abs(currentMediaTime - expectedMediaTime) > 0.3) {\n 277β†’ element.currentTime = expectedMediaTime;\n 278β†’ }\n 279β†’ }\n 280β†’ }\n 281β†’\n 282β†’ /**\n 283β†’ * Render active media to canvas with proper layering\n 284β†’ */\n 285β†’ private renderToCanvas(): void {\n 286β†’ if (!this.canvas || !this.canvasContext) return;\n 287β†’\n 288β†’ const ctx = this.canvasContext;\n 289β†’ const canvasWidth = this.canvas.width;\n 290β†’ const canvasHeight = this.canvas.height;\n 291β†’\n 292β†’ // Clear canvas\n 293β†’ ctx.fillStyle = '#1a1a1a';\n 294β†’ ctx.fillRect(0, 0, canvasWidth, canvasHeight);\n 295β†’\n 296β†’ // Get active media sorted by track order (higher order = bottom layer)\n 297β†’ const sortedMedia = Array.from(this.activeMediaMap.values())\n 298β†’ .sort((a, b) => b.trackOrder - a.trackOrder);\n 299β†’\n 300β†’ // Render each media item\n 301β†’ for (const activeMedia of sortedMedia) {\n 302β†’ this.renderMediaItem(activeMedia, ctx, canvasWidth, canvasHeight);\n 303β†’ }\n 304β†’ }\n 305β†’\n 306β†’ /**\n 307β†’ * Render a single media item to canvas with proper scaling\n 308β†’ */\n 309β†’ private renderMediaItem(\n 310β†’ activeMedia: ActiveMedia,\n 311β†’ ctx: CanvasRenderingContext2D,\n 312β†’ canvasWidth: number,\n 313β†’ canvasHeight: number\n 314β†’ ): void {\n 315β†’ const { element, item } = activeMedia;\n 316β†’\n 317β†’ // Only render video and image types\n 318β†’ if (item.type === MediaType.AUDIO) return;\n 319β†’\n 320β†’ let source: CanvasImageSource | null = null;\n 321β†’ let sourceWidth = 0;\n 322β†’ let sourceHeight = 0;\n 323β†’\n 324β†’ if (element instanceof HTMLVideoElement) {\n 325β†’ // Check if video has loaded enough to render\n 326β†’ if (element.readyState < 2) return;\n 327β†’ source = element;\n 328β†’ sourceWidth = element.videoWidth;\n 329β†’ sourceHeight = element.videoHeight;\n 330β†’ } else if (element instanceof HTMLImageElement) {\n 331β†’ // Check if image is loaded\n 332β†’ if (!element.complete || element.naturalWidth === 0) return;\n 333β†’ source = element;\n 334β†’ sourceWidth = element.naturalWidth;\n 335β†’ sourceHeight = element.naturalHeight;\n 336β†’ }\n 337β†’\n 338β†’ if (!source || sourceWidth === 0 || sourceHeight === 0) return;\n 339β†’\n 340β†’ // Calculate scaled dimensions maintaining aspect ratio\n 341β†’ const { width, height, x, y } = this.calculateScaledDimensions(\n 342β†’ sourceWidth,\n 343β†’ sourceHeight,\n 344β†’ canvasWidth,\n 345β†’ canvasHeight\n 346β†’ );\n 347β†’\n 348β†’ // Draw the media\n 349β†’ ctx.drawImage(source, x, y, width, height);\n 350β†’ }\n 351β†’\n 352β†’ /**\n 353β†’ * Calculate dimensions for media that fit within canvas while preserving aspect ratio\n 354β†’ */\n 355β†’ private calculateScaledDimensions(\n 356β†’ sourceWidth: number,\n 357β†’ sourceHeight: number,\n 358β†’ canvasWidth: number,\n 359β†’ canvasHeight: number\n 360β†’ ): { width: number; height: number; x: number; y: number } {\n 361β†’ const sourceAspect = sourceWidth / sourceHeight;\n 362β†’ const canvasAspect = canvasWidth / canvasHeight;\n 363β†’\n 364β†’ let width: number;\n 365β†’ let height: number;\n 366β†’\n 367β†’ if (sourceAspect > canvasAspect) {\n 368β†’ // Source is wider - fit to width\n 369β†’ width = canvasWidth;\n 370β†’ height = canvasWidth / sourceAspect;\n 371β†’ } else {\n 372β†’ // Source is taller - fit to height\n 373β†’ height = canvasHeight;\n 374β†’ width = canvasHeight * sourceAspect;\n 375β†’ }\n 376β†’\n 377β†’ // Center the media\n 378β†’ const x = (canvasWidth - width) / 2;\n 379β†’ const y = (canvasHeight - height) / 2;\n 380β†’\n 381β†’ return { width, height, x, y };\n 382β†’ }\n 383β†’\n 384β†’ /**\n 385β†’ * Cleanup all active media\n 386β†’ */\n 387β†’ private cleanupAllMedia(): void {\n 388β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 389β†’ this.stopMedia(activeMedia);\n 390β†’ }\n 391β†’ this.activeMediaMap.clear();\n 392β†’ }\n 393β†’\n 394β†’ /**\n 395β†’ * Seek to a specific position and update media accordingly\n 396β†’ */\n 397β†’ seek(tracks: Track[], position: number): void {\n 398β†’ this._playheadPosition.set(position);\n 399β†’\n 400β†’ // Update all active media positions\n 401β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 402β†’ const { item, element } = activeMedia;\n 403β†’ const itemEnd = item.startTime + item.duration;\n 404β†’\n 405β†’ // Check if media should still be active at new position\n 406β†’ if (position < item.startTime || position >= itemEnd) {\n 407β†’ // Media should no longer be active\n 408β†’ this.stopMedia(activeMedia);\n 409β†’ this.activeMediaMap.delete(item.id);\n 410β†’ } else if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n 411β†’ // Seek to correct position in media\n 412β†’ const mediaStartTime = item.mediaStartTime || 0;\n 413β†’ const offsetInItem = position - item.startTime;\n 414β†’ element.currentTime = (mediaStartTime + offsetInItem) / 1000;\n 415β†’ }\n 416β†’ }\n 417β†’\n 418β†’ // Synchronize to add any new media that should be active\n 419β†’ this.synchronizeMedia(tracks, position);\n 420β†’\n 421β†’ // Render current frame\n 422β†’ this.renderToCanvas();\n 423β†’ }\n 424β†’\n 425β†’ /**\n 426β†’ * Force render the current state to canvas (useful when paused)\n 427β†’ */\n 428β†’ renderCurrentFrame(): void {\n 429β†’ this.renderToCanvas();\n 430β†’ }\n 431β†’}\n 432β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": "import { Injectable, signal, computed } from '@angular/core';\nimport { MediaItem, MediaType, Track } from '../models/timeline.models';\n\n/**\n * Represents an active media element being played\n */\nexport interface ActiveMedia {\n item: MediaItem;\n element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n trackOrder: number; // For layering: higher order = rendered first (bottom layer)\n}\n\n/**\n * Service responsible for managing real media playback.\n * Handles synchronization of media elements with timeline playhead position.\n */\n@Injectable({\n providedIn: 'root'\n})\nexport class PlaybackService {\n // Playback state\n private _isPlaying = signal<boolean>(false);\n private _playheadPosition = signal<number>(0);\n private animationFrameId: number | null = null;\n private lastFrameTime: number = 0;\n\n // Active media elements\n private activeMediaMap = new Map<string, ActiveMedia>();\n\n // Canvas reference for rendering\n private canvas: HTMLCanvasElement | null = null;\n private canvasContext: Canva**************ext2D | null = null;\n\n // Exposed signals\n readonly isPlaying = this._isPlaying.asReadonly();\n readonly playheadPosition = this._playheadPosition.asReadonly();\n\n // Computed: current active media items for rendering\n readonly activeMediaItems = computed(() => {\n return Array.from(this.activeMediaMap.values())\n .sort((a, b) => b.trackOrder - a.trackOrder);\n });\n\n constructor() {}\n\n /**\n * Set the canvas element for rendering video/image preview\n */\n setCanvas(canvas: HTMLCanvasElement): void {\n this.canvas = canvas;\n this.canvasContext = canvas.getContext('2d');\n }\n\n /**\n * Update playhead position (called from timeline component)\n */\n setPlayheadPosition(position: number): void {\n this._playheadPosition.set(position);\n }\n\n /**\n * Start playback\n */\n play(tracks: Track[], totalDuration: number): void {\n if (this._isPlaying()) return;\n\n this._isPlaying.set(true);\n\n // Start playing any already-loaded media elements\n for (const activeMedia of this.activeMediaMap.values()) {\n if (activeMedia.element instanceof HTMLVideoElement) {\n const videoElement = activeMedia.element as HTMLVideoElement;\n videoElement.play().catch(() => {\n // Autoplay may be blocked, try muted\n videoElement.muted = true;\n videoElement.play().catch(() => {});\n });\n } else if (activeMedia.element instanceof HTMLAudioElement) {\n activeMedia.element.play().catch(() => {});\n }\n }\n\n this.lastFrameTime = performance.now();\n this.startPlaybackLoop(tracks, totalDuration);\n }\n\n /**\n * Pause playback\n */\n pause(): void {\n this._isPlaying.set(false);\n if (this.animationFrameId !== null) {\n cancelAnimationFrame(this.animationFrameId);\n this.animationFrameId = null;\n }\n\n // Pause all active media\n for (const activeMedia of this.activeMediaMap.values()) {\n if (activeMedia.element instanceof HTMLVideoElement ||\n activeMedia.element instanceof HTMLAudioElement) {\n activeMedia.element.pause();\n }\n }\n }\n\n /**\n * Stop playback and reset position\n */\n stop(): void {\n this.pause();\n this._playheadPosition.set(0);\n this.cleanupAllMedia();\n }\n\n /**\n * Main playback loop - advances playhead and synchronizes media\n */\n private startPlaybackLoop(tracks: Track[], totalDuration: number): void {\n const animate = (currentTime: number) => {\n if (!this._isPlaying()) return;\n\n // Calculate delta time\n const deltaTime = currentTime - this.lastFrameTime;\n this.lastFrameTime = currentTime;\n\n // Update playhead position\n let newPosition = this._playheadPosition() + deltaTime;\n\n // Check if we've reached the end\n if (newPosition >= totalDuration) {\n newPosition = totalDuration;\n this.pause();\n }\n\n this._playheadPosition.set(newPosition);\n\n // Synchronize media with new position\n this.synchronizeMedia(tracks, newPosition);\n\n // Render to canvas\n this.renderToCanvas();\n\n // Continue animation loop\n if (this._isPlaying()) {\n this.animationFrameId = requestAnimationFrame(animate);\n }\n };\n\n this.animationFrameId = requestAnimationFrame(animate);\n }\n\n /**\n * Synchronize media elements with the current playhead position.\n * Start/stop media as playhead enters/exits their time range.\n */\n private synchronizeMedia(tracks: Track[], playheadTime: number): void {\n // Collect all items that should be active at current time\n const shouldBeActive = new Map<string, { item: MediaItem; trackOrder: number }>();\n\n for (const track of tracks) {\n for (const item of track.items) {\n const itemEnd = item.startTime + item.duration;\n\n // Check if playhead is within item's time range\n if (playheadTime >= item.startTime && playheadTime < itemEnd) {\n // Skip placeholders without URL\n if (item.isPlaceholder || !item.url) continue;\n\n shouldBeActive.set(item.id, { item, trackOrder: track.order });\n }\n }\n }\n\n // Stop media that should no longer be active\n for (const [id, activeMedia] of this.activeMediaMap.entries()) {\n if (!shouldBeActive.has(id)) {\n this.stopMedia(activeMedia);\n this.activeMediaMap.delete(id);\n }\n }\n\n // Start or update media that should be active\n for (const [id, { item, trackOrder }] of shouldBeActive.entries()) {\n if (!this.activeMediaMap.has(id)) {\n // Start new media\n this.startMedia(item, trackOrder, playheadTime);\n } else {\n // Update existing media position if needed\n this.updateMediaPosition(this.activeMediaMap.get(id)!, playheadTime);\n }\n }\n }\n\n /**\n * Start playing a media item\n */\n private startMedia(item: MediaItem, trackOrder: number, playheadTime: number): void {\n if (!item.url) return;\n\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = playheadTime - item.startTime;\n const mediaTime = (mediaStartTime + offsetInItem) / 1000; // Convert to seconds\n\n let element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n\n switch (item.type) {\n case MediaType.VIDEO:\n element = document.createElement('video');\n (element as HTMLVideoElement).src = item.url;\n (element as HTMLVideoElement).currentTime = mediaTime;\n (element as HTMLVideoElement).muted = false;\n // Only play if playback is active\n if (this._isPlaying()) {\n (element as HTMLVideoElement).play().catch(() => {\n // Autoplay may be blocked, try muted\n (element as HTMLVideoElement).muted = true;\n (element as HTMLVideoElement).play().catch(() => {});\n });\n }\n break;\n\n case MediaType.AUDIO:\n element = document.createElement('audio');\n (element as HTMLAudioElement).src = item.url;\n (element as HTMLAudioElement).currentTime = mediaTime;\n // Only play if playback is active\n if (this._isPlaying()) {\n (element as HTMLAudioElement).play().catch(() => {});\n }\n break;\n\n case MediaType.IMAGE:\n element = document.createElement('img');\n (element as HTMLImageElement).src = item.url;\n (element as HTMLImageElement).crossOrigin = 'anonymous';\n break;\n\n default:\n return;\n }\n\n // For video, also set crossOrigin for canvas rendering\n if (element instanceof HTMLVideoElement) {\n element.crossOrigin = 'anonymous';\n }\n\n this.activeMediaMap.set(item.id, { item, element, trackOrder });\n }\n\n /**\n * Stop and cleanup a media element\n */\n private stopMedia(activeMedia: ActiveMedia): void {\n const { element } = activeMedia;\n\n if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n element.pause();\n element.src = '';\n element.load();\n }\n }\n\n /**\n * Update media playback position if it's out of sync\n */\n private updateMediaPosition(activeMedia: ActiveMedia, playheadTime: number): void {\n const { item, element } = activeMedia;\n\n if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = playheadTime - item.startTime;\n const expectedMediaTime = (mediaStartTime + offsetInItem) / 1000;\n const currentMediaTime = element.currentTime;\n\n // If more than 0.3 seconds out of sync, seek to correct position\n if (Math.abs(currentMediaTime - expectedMediaTime) > 0.3) {\n element.currentTime = expectedMediaTime;\n }\n }\n }\n\n /**\n * Render active media to canvas with proper layering\n */\n private renderToCanvas(): void {\n if (!this.canvas || !this.canvasContext) return;\n\n const ctx = this.canvasContext;\n const canvasWidth = this.canvas.width;\n const canvasHeight = this.canvas.height;\n\n // Clear canvas\n ctx.fillStyle = '#1a1a1a';\n ctx.fillRect(0, 0, canvasWidth, canvasHeight);\n\n // Get active media sorted by track order (higher order = bottom layer)\n const sortedMedia = Array.from(this.activeMediaMap.values())\n .sort((a, b) => b.trackOrder - a.trackOrder);\n\n // Render each media item\n for (const activeMedia of sortedMedia) {\n this.renderMediaItem(activeMedia, ctx, canvasWidth, canvasHeight);\n }\n }\n\n /**\n * Render a single media item to canvas with proper scaling\n */\n private renderMediaItem(\n activeMedia: ActiveMedia,\n ctx: CanvasRenderingContext2D,\n canvasWidth: number,\n canvasHeight: number\n ): void {\n const { element, item } = activeMedia;\n\n // Only render video and image types\n if (item.type === MediaType.AUDIO) return;\n\n let source: CanvasImageSource | null = null;\n let sourceWidth = 0;\n let sourceHeight = 0;\n\n if (element instanceof HTMLVideoElement) {\n // Check if video has loaded enough to render\n if (element.readyState < 2) return;\n source = element;\n sourceWidth = element.videoWidth;\n sourceHeight = element.videoHeight;\n } else if (element instanceof HTMLImageElement) {\n // Check if image is loaded\n if (!element.complete || element.naturalWidth === 0) return;\n source = element;\n sourceWidth = element.naturalWidth;\n sourceHeight = element.naturalHeight;\n }\n\n if (!source || sourceWidth === 0 || sourceHeight === 0) return;\n\n // Calculate scaled dimensions maintaining aspect ratio\n const { width, height, x, y } = this.calculateScaledDimensions(\n sourceWidth,\n sourceHeight,\n canvasWidth,\n canvasHeight\n );\n\n // Draw the media\n ctx.drawImage(source, x, y, width, height);\n }\n\n /**\n * Calculate dimensions for media that fit within canvas while preserving aspect ratio\n */\n private calculateScaledDimensions(\n sourceWidth: number,\n sourceHeight: number,\n canvasWidth: number,\n canvasHeight: number\n ): { width: number; height: number; x: number; y: number } {\n const sourceAspect = sourceWidth / sourceHeight;\n const canvasAspect = canvasWidth / canvasHeight;\n\n let width: number;\n let height: number;\n\n if (sourceAspect > canvasAspect) {\n // Source is wider - fit to width\n width = canvasWidth;\n height = canvasWidth / sourceAspect;\n } else {\n // Source is taller - fit to height\n height = canvasHeight;\n width = canvasHeight * sourceAspect;\n }\n\n // Center the media\n const x = (canvasWidth - width) / 2;\n const y = (canvasHeight - height) / 2;\n\n return { width, height, x, y };\n }\n\n /**\n * Cleanup all active media\n */\n private cleanupAllMedia(): void {\n for (const activeMedia of this.activeMediaMap.values()) {\n this.stopMedia(activeMedia);\n }\n this.activeMediaMap.clear();\n }\n\n /**\n * Seek to a specific position and update media accordingly\n */\n seek(tracks: Track[], position: number): void {\n this._playheadPosition.set(position);\n\n // Update all active media positions\n for (const activeMedia of this.activeMediaMap.values()) {\n const { item, element } = activeMedia;\n const itemEnd = item.startTime + item.duration;\n\n // Check if media should still be active at new position\n if (position < item.startTime || position >= itemEnd) {\n // Media should no longer be active\n this.stopMedia(activeMedia);\n this.activeMediaMap.delete(item.id);\n } else if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n // Seek to correct position in media\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = position - item.startTime;\n element.currentTime = (mediaStartTime + offsetInItem) / 1000;\n }\n }\n\n // Synchronize to add any new media that should be active\n this.synchronizeMedia(tracks, position);\n\n // Render current frame\n this.renderToCanvas();\n }\n\n /**\n * Force render the current state to canvas (useful when paused)\n */\n renderCurrentFrame(): void {\n this.renderToCanvas();\n }\n}\n",
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"content": " 1β†’export enum MediaType {\n 2β†’ VIDEO = 'video',\n 3β†’ AUDIO = 'audio',\n 4β†’ IMAGE = 'image'\n 5β†’}\n 6β†’\n 7β†’export interface MediaItem {\n 8β†’ id: string;\n 9β†’ type: MediaType;\n 10β†’ startTime: number; // milliseconds - position on timeline\n 11β†’ duration: number; // milliseconds - duration shown on timeline\n 12β†’ mediaStartTime?: number; // milliseconds - offset into source media (default: 0)\n 13β†’ maxDuration?: number; // milliseconds - maximum duration for audio/video placeholders\n 14β†’ trackId: string;\n 15β†’ name?: string;\n 16β†’ url?: string; // URL to the actual media file\n 17β†’ isPlaceholder?: boolean;\n 18β†’}\n 19β†’\n 20β†’export interface Track {\n 21β†’ id: string;\n 22β†’ name: string;\n 23β†’ order: number;\n 24β†’ items: MediaItem[];\n 25β†’}\n 26β†’\n 27β†’export interface TimelineState {\n 28β†’ tracks: Track[];\n 29β†’ playheadPosition: number; // milliseconds\n 30β†’ zoomLevel: number; // pixels per millisecond\n 31β†’ totalDuration: number; // milliseconds\n 32β†’ selectedItemId: string | null; // ID of selected media item\n 33β†’}\n 34β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": "export enum MediaType {\n VIDEO = 'video',\n AUDIO = 'audio',\n IMAGE = 'image'\n}\n\nexport interface MediaItem {\n id: string;\n type: MediaType;\n startTime: number; // milliseconds - position on timeline\n duration: number; // milliseconds - duration shown on timeline\n mediaStartTime?: number; // milliseconds - offset into source media (default: 0)\n maxDuration?: number; // milliseconds - maximum duration for audio/video placeholders\n trackId: string;\n name?: string;\n url?: string; // URL to the actual media file\n isPlaceholder?: boolean;\n}\n\nexport interface Track {\n id: string;\n name: string;\n order: number;\n items: MediaItem[];\n}\n\nexport interface TimelineState {\n tracks: Track[];\n playheadPosition: number; // milliseconds\n zoomLevel: number; // pixels per millisecond\n totalDuration: number; // milliseconds\n selectedItemId: string | null; // ID of selected media item\n}\n",
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[2025-12-07T21:04:52.868Z] [INFO] {
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[2025-12-07T21:04:52.896Z] [INFO] {
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"content": " 1β†’<div class=\"flex flex-col h-full bg-[#1e1e1e] text-gray-200 select-none\" (mouseup)=\"onPointerUp($event)\" (mousemove)=\"onDocumentPointerMove($event)\" (touchend)=\"onPointerUp($event)\" (touchmove)=\"onDocumentPointerMove($event)\">\n 2β†’ <!-- Toolbar -->\n 3β†’ <div class=\"flex justify-between items-center px-4 py-3 bg-[#252525] border-b border-[#3a3a3a]\">\n 4β†’ <h2 class=\"text-lg font-semibold m-0\">VideoEditor</h2>\n 5β†’ <div class=\"flex gap-4 items-center\">\n 6β†’ <button\n 7β†’ (click)=\"newProject()\"\n 8β†’ class=\"px-3 py-1.5 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-sm transition-colors hover:bg-[#4a4a4a] flex items-center gap-2\"\n 9β†’ title=\"Create new project (clears timeline and saved data)\">\n 10β†’ <i class=\"bi bi-file-earmark-plus\"></i>\n 11β†’ <span>New project</span>\n 12β†’ </button>\n 13β†’ <div class=\"font-mono text-sm px-3 py-1 bg-[#2a2a2a] rounded cursor-pointer hover:bg-[#3a3a3a] transition-colors\"\n 14β†’ (click)=\"openDurationEditor()\"\n 15β†’ title=\"Click to change total duration\">\n 16β†’ {{ formatTime(state().playheadPosition) }} / {{ formatTime(state().totalDuration) }}\n 17β†’ </div>\n 18β†’ </div>\n 19β†’ </div>\n 20β†’\n 21β†’ <!-- Video Preview Area -->\n 22β†’ <div class=\"flex justify-center items-center py-6 bg-[#252525] border-b border-[#3a3a3a]\">\n 23β†’ <div class=\"flex flex-col items-center gap-3\">\n 24β†’ <!-- Video Preview Canvas -->\n 25β†’ <div class=\"w-[640px] h-[360px] bg-[#1a1a1a] rounded-lg border border-[#3a3a3a] flex items-center justify-center overflow-hidden\">\n 26β†’ <canvas #previewCanvas\n 27β†’ [width]=\"PREVIEW_WIDTH\"\n 28β†’ [height]=\"PREVIEW_HEIGHT\"\n 29β†’ class=\"w-full h-full\">\n 30β†’ </canvas>\n 31β†’ </div>\n 32β†’\n 33β†’ <!-- Playback Controls -->\n 34β†’ <div class=\"flex gap-2 items-center\">\n 35β†’ <button (click)=\"skipBackward()\" class=\"px-3 py-2 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-base transition-colors hover:bg-[#4a4a4a] flex items-center gap-1.5\" title=\"Back 5 seconds\">\n 36β†’ <i class=\"bi bi-skip-backward-fill\"></i>\n 37β†’ <span class=\"text-xs\">5s</span>\n 38β†’ </button>\n 39β†’ <button (click)=\"togglePlayback()\" class=\"px-4 py-2 bg-blue-600 text-white border-none rounded cursor-pointer text-xl transition-colors hover:bg-blue-700\" [title]=\"isPlaying() ? 'Pause' : 'Play'\">\n 40β†’ @if (isPlaying()) {\n 41β†’ <i class=\"bi bi-pause-fill\"></i>\n 42β†’ } @else {\n 43β†’ <i class=\"bi bi-play-fill\"></i>\n 44β†’ }\n 45β†’ </button>\n 46β†’ <button (click)=\"skipForward()\" class=\"px-3 py-2 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-base transition-colors hover:bg-[#4a4a4a] flex items-center gap-1.5\" title=\"Forward 5 seconds\">\n 47β†’ <span class=\"text-xs\">5s</span>\n 48β†’ <i class=\"bi bi-skip-forward-fill\"></i>\n 49β†’ </button>\n 50β†’ </div>\n 51β†’ </div>\n 52β†’ </div>\n 53β†’\n 54β†’ <div class=\"relative\">\n 55β†’ <!-- Media Toolbar (positioned absolutely above timeline, aligned with left panel) -->\n 56β†’ <app-media-toolbar\n 57β†’ [isVisible]=\"hasSelectedItem()\"\n 58β†’ [hasClipboard]=\"hasClipboardItem()\"\n 59β†’ (trimMedia)=\"trimSelectedMedia()\"\n 60β†’ (copyMedia)=\"copySelectedMedia()\"\n 61β†’ (pasteMedia)=\"pasteMedia()\">\n 62β†’ </app-media-toolbar>\n 63β†’ </div>\n 64β†’ <!-- Timeline content wrapper with unified horizontal scrolling -->\n 65β†’ <div class=\"flex-1 flex flex-col overflow-y-auto overflow-x-auto relative\">\n 66β†’ <!-- Timeline Ruler (sticky to stay visible during vertical scroll) -->\n 67β†’ <div class=\"flex border-b border-[#3a3a3a] flex-shrink-0 sticky top-0 z-10 bg-[#2a2a2a] relative\">\n 68β†’ <!-- Control area to align with track headers -->\n 69β†’ <div class=\"min-w-[150px] bg-[#252525] border-r border-[#3a3a3a] flex justify-center items-center gap-1 p-2\">\n 70β†’ <button (click)=\"addTrack()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Add track\">\n 71β†’ <i class=\"bi bi-plus-circle\"></i>\n 72β†’ </button>\n 73β†’ <button (click)=\"zoomOut()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Zoom out\">\n 74β†’ <i class=\"bi bi-zoom-out\"></i>\n 75β†’ </button>\n 76β†’ <button (click)=\"zoomIn()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Zoom in\">\n 77β†’ <i class=\"bi bi-zoom-in\"></i>\n 78β†’ </button>\n 79β†’ </div>\n 80β†’ <!-- Ruler content -->\n 81β†’ <div class=\"relative h-10 bg-[#2a2a2a] flex-1\">\n 82β†’ <div class=\"relative h-full min-w-full cursor-pointer\"\n 83β†’ [style.width.px]=\"timelineWidth()\"\n 84β†’ (mousedown)=\"onRulerPointerDown($event)\"\n 85β†’ (touchstart)=\"onRulerPointerDown($event)\"\n 86β†’ #timelineRuler>\n 87β†’ @for (marker of getTimeMarkers(); track marker.position) {\n 88β†’ <div class=\"absolute top-0 h-full\" [style.left.px]=\"marker.position\">\n 89β†’ <div class=\"w-px h-[60%] bg-[#4a4a4a]\"></div>\n 90β†’ <div class=\"text-[10px] text-gray-400 mt-0.5 whitespace-nowrap\">{{ marker.label }}</div>\n 91β†’ </div>\n 92β†’ }\n 93β†’ </div>\n 94β†’ <!-- Playhead - positioned in ruler container to stay visible -->\n 95β†’ <div class=\"absolute top-0 pointer-events-none z-[5]\"\n 96β†’ [style.left.px]=\"playheadPosition()\"\n 97β†’ (mousedown)=\"onPlayheadPointerDown($event)\"\n 98β†’ (touchstart)=\"onPlayheadPointerDown($event)\">\n 99β†’ <div class=\"absolute -left-1.5 top-4 w-3 h-3 bg-red-500 rounded-sm cursor-ew-resize pointer-events-auto\"></div>\n 100β†’ <div class=\"absolute left-0 top-4 w-0.5 bg-red-500 pointer-events-none\" [style.height.px]=\"timelineLineHeight()\"></div>\n 101β†’ </div>\n 102β†’ </div>\n 103β†’ </div>\n 104β†’\n 105β†’ <!-- Tracks -->\n 106β†’ <div class=\"flex-1\" [style.width.px]=\"timelineWidth() + TRACK_HEADER_WIDTH\">\n 107β†’ @for (track of state().tracks; track track.id; let i = $index) {\n 108β†’ <div class=\"flex border-b border-[#3a3a3a] min-h-[60px]\">\n 109β†’ <!-- Track header -->\n 110β†’ <div class=\"flex items-center justify-between min-w-[150px] p-2 bg-[#252525] border-r border-[#3a3a3a]\">\n 111β†’ <span class=\"text-sm font-medium\">Track {{ i + 1 }}</span>\n 112β†’ <div class=\"flex gap-1\">\n 113β†’ <button\n 114β†’ (click)=\"openMediaLibrary(track.id)\"\n 115β†’ class=\"p-1 text-base text-white border-none bg-transparent cursor-pointer transition-opacity opacity-70 hover:opacity-100\"\n 116β†’ title=\"Add media\">\n 117β†’ <i class=\"bi bi-plus-circle\"></i>\n 118β†’ </button>\n 119β†’ <button\n 120β†’ (click)=\"removeTrack(track.id)\"\n 121β†’ class=\"p-1 text-base text-red-500 border-none bg-transparent cursor-pointer transition-opacity opacity-70 hover:opacity-100\"\n 122β†’ title=\"Remove track\">\n 123β†’ <i class=\"bi bi-trash\"></i>\n 124β†’ </button>\n 125β†’ </div>\n 126β†’ </div>\n 127β†’\n 128β†’ <!-- Track timeline -->\n 129β†’ <div class=\"relative flex-1\">\n 130β†’ <div class=\"track relative bg-[#1a1a1a] min-h-[60px]\"\n 131β†’ (mousemove)=\"onTrackPointerMove($event, track)\"\n 132β†’ (mousedown)=\"onTrackPointerDown($event)\"\n 133β†’ (touchmove)=\"onTrackPointerMove($event, track)\"\n 134β†’ (touchstart)=\"onTrackPointerDown($event)\">\n 135β†’\n 136β†’ @for (item of track.items; track item.id) {\n 137β†’ <div class=\"media-item group absolute h-12 top-1.5 rounded border-2 border-transparent cursor-move flex items-center overflow-hidden transition-colors hover:border-white/30\"\n 138β†’ [class]=\"getMediaTypeClass(item.type)\"\n 139β†’ [class.selected]=\"isItemSelected(item.id)\"\n 140β†’ [style.left]=\"getItemStyle(item).left\"\n 141β†’ [style.width]=\"getItemStyle(item).width\"\n 142β†’ (mousedown)=\"onMediaItemPointerDown($event, item, track)\"\n 143β†’ (touchstart)=\"onMediaItemPointerDown($event, item, track)\">\n 144β†’\n 145β†’ <div class=\"resize-handle resize-handle-left absolute top-0 left-0 w-2 h-full cursor-ew-resize z-[2] bg-gradient-to-r from-white/30 to-transparent hover:bg-white/50\"></div>\n 146β†’\n 147β†’ <div class=\"flex items-center gap-1.5 px-2 flex-1 overflow-hidden\">\n 148β†’ <div class=\"text-lg flex-shrink-0\">\n 149β†’ @switch (item.type) {\n 150β†’ @case (MediaType.VIDEO) {\n 151β†’ <i class=\"bi bi-camera-video-fill\"></i>\n 152β†’ }\n 153β†’ @case (MediaType.AUDIO) {\n 154β†’ <i class=\"bi bi-volume-up-fill\"></i>\n 155β†’ }\n 156β†’ @case (MediaType.IMAGE) {\n 157β†’ <i class=\"bi bi-image-fill\"></i>\n 158β†’ }\n 159β†’ }\n 160β†’ </div>\n 161β†’ <div class=\"flex flex-col overflow-hidden flex-1\">\n 162β†’ <div class=\"text-[11px] font-medium whitespace-nowrap overflow-hidden text-ellipsis\">{{ item.name }}</div>\n 163β†’ <div class=\"text-[9px] text-white/60 font-mono\">\n 164β†’ @if (item.mediaStartTime && item.mediaStartTime > 0) {\n 165β†’ <span>{{ formatTime(item.mediaStartTime) }} - </span>\n 166β†’ }\n 167β†’ {{ formatTime(item.duration) }}\n 168β†’ </div>\n 169β†’ </div>\n 170β†’ </div>\n 171β†’\n 172β†’ <div class=\"resize-handle resize-handle-right absolute top-0 right-0 w-2 h-full cursor-ew-resize z-[2] bg-gradient-to-l from-white/30 to-transparent hover:bg-white/50\"></div>\n 173β†’\n 174β†’ <button\n 175β†’ class=\"media-item-delete absolute top-0.5 right-0.5 w-5 h-5 bg-black/60 text-white border-none rounded-full cursor-pointer text-xs leading-none p-0 hidden items-center justify-center hover:bg-red-600\"\n 176β†’ (click)=\"removeMediaItem(item.id, track.id); $event.stopPropagation()\">\n 177β†’ <i class=\"bi bi-x\"></i>\n 178β†’ </button>\n 179β†’ </div>\n 180β†’ }\n 181β†’ </div>\n 182β†’ </div>\n 183β†’ </div>\n 184β†’ }\n 185β†’ </div>\n 186β†’ </div>\n 187β†’\n 188β†’ <!-- Duration Editor Modal -->\n 189β†’ @if (showDurationEditor()) {\n 190β†’ <div class=\"fixed inset-0 bg-black/50 flex items-center justify-center z-[2000]\" (click)=\"closeDurationEditor()\">\n 191β†’ <div class=\"bg-[#2a2a2a] rounded-lg p-6 min-w-[400px] border border-[#3a3a3a]\" (click)=\"$event.stopPropagation()\">\n 192β†’ <h3 class=\"text-lg font-semibold mb-4 mt-0\">Total video duration</h3>\n 193β†’\n 194β†’ <div class=\"mb-4\">\n 195β†’ <label class=\"block text-sm text-gray-400 mb-2\">Duration (in seconds):</label>\n 196β†’ <input\n 197β†’ type=\"number\"\n 198β†’ min=\"1\"\n 199β†’ max=\"3600\"\n 200β†’ step=\"1\"\n 201β†’ [value]=\"state().totalDuration / 1000\"\n 202β†’ (input)=\"onDurationInputChange($event)\"\n 203β†’ class=\"w-full px-3 py-2 bg-[#1e1e1e] border border-[#3a3a3a] rounded text-white focus:outline-none focus:border-blue-500\"\n 204β†’ placeholder=\"60\">\n 205β†’ <div class=\"text-xs text-gray-500 mt-1\">Current value: {{ formatTime(state().totalDuration) }}</div>\n 206β†’ </div>\n 207β†’\n 208β†’ <div class=\"flex gap-2 justify-end\">\n 209β†’ <button\n 210β†’ (click)=\"closeDurationEditor()\"\n 211β†’ class=\"px-4 py-2 bg-[#3a3a3a] text-white border-none rounded cursor-pointer transition-colors hover:bg-[#4a4a4a]\">\n 212β†’ Cancel\n 213β†’ </button>\n 214β†’ <button\n 215β†’ (click)=\"saveDuration()\"\n 216β†’ class=\"px-4 py-2 bg-blue-600 text-white border-none rounded cursor-pointer transition-colors hover:bg-blue-700\">\n 217β†’ Save\n 218β†’ </button>\n 219β†’ </div>\n 220β†’ </div>\n 221β†’ </div>\n 222β†’ }\n 223β†’\n 224β†’ <!-- Media Library Modal -->\n 225β†’ @if (showMediaLibrary()) {\n 226β†’ <app-media-library\n 227β†’ (closeModal)=\"closeMediaLibrary()\"\n 228β†’ (selectMedia)=\"onMediaSelected($event)\">\n 229β†’ </app-media-library>\n 230β†’ }\n 231β†’\n 232β†’ <!-- Notifications -->\n 233β†’ <app-notifications #notifications></app-notifications>\n 234β†’</div>\n 235β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": "<div class=\"flex flex-col h-full bg-[#1e1e1e] text-gray-200 select-none\" (mouseup)=\"onPointerUp($event)\" (mousemove)=\"onDocumentPointerMove($event)\" (touchend)=\"onPointerUp($event)\" (touchmove)=\"onDocumentPointerMove($event)\">\n <!-- Toolbar -->\n <div class=\"flex justify-between items-center px-4 py-3 bg-[#252525] border-b border-[#3a3a3a]\">\n <h2 class=\"text-lg font-semibold m-0\">VideoEditor</h2>\n <div class=\"flex gap-4 items-center\">\n <button\n (click)=\"newProject()\"\n class=\"px-3 py-1.5 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-sm transition-colors hover:bg-[#4a4a4a] flex items-center gap-2\"\n title=\"Create new project (clears timeline and saved data)\">\n <i class=\"bi bi-file-earmark-plus\"></i>\n <span>New project</span>\n </button>\n <div class=\"font-mono text-sm px-3 py-1 bg-[#2a2a2a] rounded cursor-pointer hover:bg-[#3a3a3a] transition-colors\"\n (click)=\"openDurationEditor()\"\n title=\"Click to change total duration\">\n {{ formatTime(state().playheadPosition) }} / {{ formatTime(state().totalDuration) }}\n </div>\n </div>\n </div>\n\n <!-- Video Preview Area -->\n <div class=\"flex justify-center items-center py-6 bg-[#252525] border-b border-[#3a3a3a]\">\n <div class=\"flex flex-col items-center gap-3\">\n <!-- Video Preview Canvas -->\n <div class=\"w-[640px] h-[360px] bg-[#1a1a1a] rounded-lg border border-[#3a3a3a] flex items-center justify-center overflow-hidden\">\n <canvas #previewCanvas\n [width]=\"PREVIEW_WIDTH\"\n [height]=\"PREVIEW_HEIGHT\"\n class=\"w-full h-full\">\n </canvas>\n </div>\n\n <!-- Playback Controls -->\n <div class=\"flex gap-2 items-center\">\n <button (click)=\"skipBackward()\" class=\"px-3 py-2 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-base transition-colors hover:bg-[#4a4a4a] flex items-center gap-1.5\" title=\"Back 5 seconds\">\n <i class=\"bi bi-skip-backward-fill\"></i>\n <span class=\"text-xs\">5s</span>\n </button>\n <button (click)=\"togglePlayback()\" class=\"px-4 py-2 bg-blue-600 text-white border-none rounded cursor-pointer text-xl transition-colors hover:bg-blue-700\" [title]=\"isPlaying() ? 'Pause' : 'Play'\">\n @if (isPlaying()) {\n <i class=\"bi bi-pause-fill\"></i>\n } @else {\n <i class=\"bi bi-play-fill\"></i>\n }\n </button>\n <button (click)=\"skipForward()\" class=\"px-3 py-2 bg-[#3a3a3a] text-white border-none rounded cursor-pointer text-base transition-colors hover:bg-[#4a4a4a] flex items-center gap-1.5\" title=\"Forward 5 seconds\">\n <span class=\"text-xs\">5s</span>\n <i class=\"bi bi-skip-forward-fill\"></i>\n </button>\n </div>\n </div>\n </div>\n\n <div class=\"relative\">\n <!-- Media Toolbar (positioned absolutely above timeline, aligned with left panel) -->\n <app-media-toolbar\n [isVisible]=\"hasSelectedItem()\"\n [hasClipboard]=\"hasClipboardItem()\"\n (trimMedia)=\"trimSelectedMedia()\"\n (copyMedia)=\"copySelectedMedia()\"\n (pasteMedia)=\"pasteMedia()\">\n </app-media-toolbar>\n </div>\n <!-- Timeline content wrapper with unified horizontal scrolling -->\n <div class=\"flex-1 flex flex-col overflow-y-auto overflow-x-auto relative\">\n <!-- Timeline Ruler (sticky to stay visible during vertical scroll) -->\n <div class=\"flex border-b border-[#3a3a3a] flex-shrink-0 sticky top-0 z-10 bg-[#2a2a2a] relative\">\n <!-- Control area to align with track headers -->\n <div class=\"min-w-[150px] bg-[#252525] border-r border-[#3a3a3a] flex justify-center items-center gap-1 p-2\">\n <button (click)=\"addTrack()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Add track\">\n <i class=\"bi bi-plus-circle\"></i>\n </button>\n <button (click)=\"zoomOut()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Zoom out\">\n <i class=\"bi bi-zoom-out\"></i>\n </button>\n <button (click)=\"zoomIn()\" class=\"px-2 py-1 text-white border-none rounded cursor-pointer text-sm opacity-70 transition-opacity hover:opacity-100\" title=\"Zoom in\">\n <i class=\"bi bi-zoom-in\"></i>\n </button>\n </div>\n <!-- Ruler content -->\n <div class=\"relative h-10 bg-[#2a2a2a] flex-1\">\n <div class=\"relative h-full min-w-full cursor-pointer\"\n [style.width.px]=\"timelineWidth()\"\n (mousedown)=\"onRulerPointerDown($event)\"\n (touchstart)=\"onRulerPointerDown($event)\"\n #timelineRuler>\n @for (marker of getTimeMarkers(); track marker.position) {\n <div class=\"absolute top-0 h-full\" [style.left.px]=\"marker.position\">\n <div class=\"w-px h-[60%] bg-[#4a4a4a]\"></div>\n <div class=\"text-[10px] text-gray-400 mt-0.5 whitespace-nowrap\">{{ marker.label }}</div>\n </div>\n }\n </div>\n <!-- Playhead - positioned in ruler container to stay visible -->\n <div class=\"absolute top-0 pointer-events-none z-[5]\"\n [style.left.px]=\"playheadPosition()\"\n (mousedown)=\"onPlayheadPointerDown($event)\"\n (touchstart)=\"onPlayheadPointerDown($event)\">\n <div class=\"absolute -left-1.5 top-4 w-3 h-3 bg-red-500 rounded-sm cursor-ew-resize pointer-events-auto\"></div>\n <div class=\"absolute left-0 top-4 w-0.5 bg-red-500 pointer-events-none\" [style.height.px]=\"timelineLineHeight()\"></div>\n </div>\n </div>\n </div>\n\n <!-- Tracks -->\n <div class=\"flex-1\" [style.width.px]=\"timelineWidth() + TRACK_HEADER_WIDTH\">\n @for (track of state().tracks; track track.id; let i = $index) {\n <div class=\"flex border-b border-[#3a3a3a] min-h-[60px]\">\n <!-- Track header -->\n <div class=\"flex items-center justify-between min-w-[150px] p-2 bg-[#252525] border-r border-[#3a3a3a]\">\n <span class=\"text-sm font-medium\">Track {{ i + 1 }}</span>\n <div class=\"flex gap-1\">\n <button\n (click)=\"openMediaLibrary(track.id)\"\n class=\"p-1 text-base text-white border-none bg-transparent cursor-pointer transition-opacity opacity-70 hover:opacity-100\"\n title=\"Add media\">\n <i class=\"bi bi-plus-circle\"></i>\n </button>\n <button\n (click)=\"removeTrack(track.id)\"\n class=\"p-1 text-base text-red-500 border-none bg-transparent cursor-pointer transition-opacity opacity-70 hover:opacity-100\"\n title=\"Remove track\">\n <i class=\"bi bi-trash\"></i>\n </button>\n </div>\n </div>\n\n <!-- Track timeline -->\n <div class=\"relative flex-1\">\n <div class=\"track relative bg-[#1a1a1a] min-h-[60px]\"\n (mousemove)=\"onTrackPointerMove($event, track)\"\n (mousedown)=\"onTrackPointerDown($event)\"\n (touchmove)=\"onTrackPointerMove($event, track)\"\n (touchstart)=\"onTrackPointerDown($event)\">\n\n @for (item of track.items; track item.id) {\n <div class=\"media-item group absolute h-12 top-1.5 rounded border-2 border-transparent cursor-move flex items-center overflow-hidden transition-colors hover:border-white/30\"\n [class]=\"getMediaTypeClass(item.type)\"\n [class.selected]=\"isItemSelected(item.id)\"\n [style.left]=\"getItemStyle(item).left\"\n [style.width]=\"getItemStyle(item).width\"\n (mousedown)=\"onMediaItemPointerDown($event, item, track)\"\n (touchstart)=\"onMediaItemPointerDown($event, item, track)\">\n\n <div class=\"resize-handle resize-handle-left absolute top-0 left-0 w-2 h-full cursor-ew-resize z-[2] bg-gradient-to-r from-white/30 to-transparent hover:bg-white/50\"></div>\n\n <div class=\"flex items-center gap-1.5 px-2 flex-1 overflow-hidden\">\n <div class=\"text-lg flex-shrink-0\">\n @switch (item.type) {\n @case (MediaType.VIDEO) {\n <i class=\"bi bi-camera-video-fill\"></i>\n }\n @case (MediaType.AUDIO) {\n <i class=\"bi bi-volume-up-fill\"></i>\n }\n @case (MediaType.IMAGE) {\n <i class=\"bi bi-image-fill\"></i>\n }\n }\n </div>\n <div class=\"flex flex-col overflow-hidden flex-1\">\n <div class=\"text-[11px] font-medium whitespace-nowrap overflow-hidden text-ellipsis\">{{ item.name }}</div>\n <div class=\"text-[9px] text-white/60 font-mono\">\n @if (item.mediaStartTime && item.mediaStartTime > 0) {\n <span>{{ formatTime(item.mediaStartTime) }} - </span>\n }\n {{ formatTime(item.duration) }}\n </div>\n </div>\n </div>\n\n <div class=\"resize-handle resize-handle-right absolute top-0 right-0 w-2 h-full cursor-ew-resize z-[2] bg-gradient-to-l from-white/30 to-transparent hover:bg-white/50\"></div>\n\n <button\n class=\"media-item-delete absolute top-0.5 right-0.5 w-5 h-5 bg-black/60 text-white border-none rounded-full cursor-pointer text-xs leading-none p-0 hidden items-center justify-center hover:bg-red-600\"\n (click)=\"removeMediaItem(item.id, track.id); 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"content": " 1β†’import { Component, input, output } from '@angular/core';\n 2β†’import { CommonModule } from '@angular/common';\n 3β†’\n 4β†’@Component({\n 5β†’ selector: 'app-media-toolbar',\n 6β†’ standalone: true,\n 7β†’ imports: [CommonModule],\n 8β†’ templateUrl: './media-toolbar.component.html',\n 9β†’ styleUrl: './media-toolbar.component.css'\n 10β†’})\n 11β†’export class Media***********onent {\n 12β†’ // Input: whether a media item is selected\n 13β†’ readonly isVisible = input<boolean>(false);\n 14β†’\n 15β†’ // Input: whether a media item is in clipboard (for paste button visibility)\n 16β†’ readonly hasClipboard = input<boolean>(false);\n 17β†’\n 18β†’ // Output events for toolbar actions\n 19β†’ readonly trimMedia = output<void>();\n 20β†’ readonly copyMedia = output<void>();\n 21β†’ readonly pasteMedia = output<void>();\n 22β†’\n 23β†’ onTrimClick(): void {\n 24β†’ this.trimMedia.emit();\n 25β†’ }\n 26β†’\n 27β†’ onCopyClick(): void {\n 28β†’ this.copyMedia.emit();\n 29β†’ }\n 30β†’\n 31β†’ onPasteClick(): void {\n 32β†’ this.pasteMedia.emit();\n 33β†’ }\n 34β†’}\n 35β†’\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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[2025-12-07T21:04:55.810Z] [INFO] {
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"content": " 1β†’import { Injectable } from '@angular/core';\n 2β†’import { MediaItem } from '../models/timeline.models';\n 3β†’\n 4β†’/**\n 5β†’ * Service responsible for handling drag-and-drop logic and timeline positioning\n 6β†’ * Extracted from timeline.component.ts for better code organization\n 7β†’ */\n 8β†’@Injectable({\n 9β†’ providedIn: 'root'\n 10β†’})\n 11β†’export class Timel*************rvice {\n 12β†’ private readonly MIN_ITEM_DURATION = 100; // Minimum item duration in milliseconds\n 13β†’ readonly SNAP_DISTANCE_MS = 200; // Snapping distance in milliseconds for drag operations\n 14β†’\n 15β†’ constructor() { }\n 16β†’\n 17β†’ /**\n 18β†’ * Check if two items overlap\n 19β†’ */\n 20β†’ itemsOverlap(item1: MediaItem, item2: MediaItem): boolean {\n 21β†’ const item1End = item1.startTime + item1.duration;\n 22β†’ const item2End = item2.startTime + item2.duration;\n 23β†’ return !(item1End <= item2.startTime || item2End <= item1.startTime);\n 24β†’ }\n 25β†’\n 26β†’ /**\n 27β†’ * Finds the closest item to the given time position in the track\n 28β†’ * Returns null if no items exist in the track\n 29β†’ */\n 30β†’ findClosestItem(trackItems: MediaItem[], time: number): MediaItem | null {\n 31β†’ if (trackItems.length === 0) return null;\n 32β†’\n 33β†’ let closestItem = trackItems[0];\n 34β†’ let minDistance = Math.abs(closestItem.startTime - time);\n 35β†’\n 36β†’ for (const item of trackItems) {\n 37β†’ const itemEnd = item.startTime + item.duration;\n 38β†’\n 39β†’ // Calculate distance to the start of the item\n 40β†’ const distanceToStart = Math.abs(item.startTime - time);\n 41β†’\n 42β†’ // Calculate distance to the end of the item\n 43β†’ const distanceToEnd = Math.abs(itemEnd - time);\n 44β†’\n 45β†’ // Use the minimum distance (to either start or end of item)\n 46β†’ const distance = Math.min(distanceToStart, distanceToEnd);\n 47β†’\n 48β†’ if (distance < minDistance) {\n 49β†’ minDistance = distance;\n 50β†’ closestItem = item;\n 51β†’ }\n 52β†’ }\n 53β†’\n 54β†’ return closestItem;\n 55β†’ }\n 56β†’\n 57β†’ /**\n 58β†’ * Find all gaps in the track\n 59β†’ * Used for finding the closest gap when requested position overlaps an item\n 60β†’ */\n 61β†’ findAllGaps(trackItems: MediaItem[]): { gapStart: number; gapEnd: number; leftItem: MediaItem | null; rightItem: MediaItem | null }[] {\n 62β†’ const gaps: { gapStart: number; gapEnd: number; leftItem: MediaItem | null; rightItem: MediaItem | null }[] = [];\n 63β†’ const sortedItems = [...trackItems].sort((a, b) => a.startTime - b.startTime);\n 64β†’\n 65β†’ if (sortedItems.length === 0) {\n 66β†’ return [{ gapStart: 0, gapEnd: Infinity, leftItem: null, rightItem: null }];\n 67β†’ }\n 68β†’\n 69β†’ // Gap before first item\n 70β†’ if (sortedItems[0].startTime > 0) {\n 71β†’ gaps.push({\n 72β†’ gapStart: 0,\n 73β†’ gapEnd: sortedItems[0].startTime,\n 74β†’ leftItem: null,\n 75β†’ rightItem: sortedItems[0]\n 76β†’ });\n 77β†’ }\n 78β†’\n 79β†’ // Gaps between items\n 80β†’ for (let i = 0; i < sortedItems.length - 1; i++) {\n 81β†’ const leftItem = sortedItems[i];\n 82β†’ const rightItem = sortedItems[i + 1];\n 83β†’ const gapStart = leftItem.startTime + leftItem.duration;\n 84β†’ const gapEnd = rightItem.startTime;\n 85β†’\n 86β†’ if (gapEnd > gapStart) {\n 87β†’ gaps.push({ gapStart, gapEnd, leftItem, rightItem });\n 88β†’ }\n 89β†’ }\n 90β†’\n 91β†’ // Gap after last item\n 92β†’ const lastItem = sortedItems[sortedItems.length - 1];\n 93β†’ gaps.push({\n 94β†’ gapStart: lastItem.startTime + lastItem.duration,\n 95β†’ gapEnd: Infinity,\n 96β†’ leftItem: lastItem,\n 97β†’ rightItem: null\n 98β†’ });\n 99β†’\n 100β†’ return gaps;\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": "import { Injectable } from '@angular/core';\nimport { MediaItem } from '../models/timeline.models';\n\n/**\n * Service responsible for handling drag-and-drop logic and timeline positioning\n * Extracted from timeline.component.ts for better code organization\n */\n@Injectable({\n providedIn: 'root'\n})\nexport class Timel*************rvice {\n private readonly MIN_ITEM_DURATION = 100; // Minimum item duration in milliseconds\n readonly SNAP_DISTANCE_MS = 200; // Snapping distance in milliseconds for drag operations\n\n constructor() { }\n\n /**\n * Check if two items overlap\n */\n itemsOverlap(item1: MediaItem, item2: MediaItem): boolean {\n const item1End = item1.startTime + item1.duration;\n const item2End = item2.startTime + item2.duration;\n return !(item1End <= item2.startTime || item2End <= item1.startTime);\n }\n\n /**\n * Finds the closest item to the given time position in the track\n * Returns null if no items exist in the track\n */\n findClosestItem(trackItems: MediaItem[], time: number): MediaItem | null {\n if (trackItems.length === 0) return null;\n\n let closestItem = trackItems[0];\n let minDistance = Math.abs(closestItem.startTime - time);\n\n for (const item of trackItems) {\n const itemEnd = item.startTime + item.duration;\n\n // Calculate distance to the start of the item\n const distanceToStart = Math.abs(item.startTime - time);\n\n // Calculate distance to the end of the item\n const distanceToEnd = Math.abs(itemEnd - time);\n\n // Use the minimum distance (to either start or end of item)\n const distance = Math.min(distanceToStart, distanceToEnd);\n\n if (distance < minDistance) {\n minDistance = distance;\n closestItem = item;\n }\n }\n\n return closestItem;\n }\n\n /**\n * Find all gaps in the track\n * Used for finding the closest gap when requested position overlaps an item\n */\n findAllGaps(trackItems: MediaItem[]): { gapStart: number; gapEnd: number; leftItem: MediaItem | null; rightItem: MediaItem | null }[] {\n const gaps: { gapStart: number; gapEnd: number; leftItem: MediaItem | null; rightItem: MediaItem | null }[] = [];\n const sortedItems = [...trackItems].sort((a, b) => a.startTime - b.startTime);\n\n if (sortedItems.length === 0) {\n return [{ gapStart: 0, gapEnd: Infinity, leftItem: null, rightItem: null }];\n }\n\n // Gap before first item\n if (sortedItems[0].startTime > 0) {\n gaps.push({\n gapStart: 0,\n gapEnd: sortedItems[0].startTime,\n leftItem: null,\n rightItem: sortedItems[0]\n });\n }\n\n // Gaps between items\n for (let i = 0; i < sortedItems.length - 1; i++) {\n const leftItem = sortedItems[i];\n const rightItem = sortedItems[i + 1];\n const gapStart = leftItem.startTime + leftItem.duration;\n const gapEnd = rightItem.startTime;\n\n if (gapEnd > gapStart) {\n gaps.push({ gapStart, gapEnd, leftItem, rightItem });\n }\n }\n\n // Gap after last item\n const lastItem = sortedItems[sortedItems.length - 1];\n gaps.push({\n gapStart: lastItem.startTime + lastItem.duration,\n gapEnd: Infinity,\n leftItem: lastItem,\n rightItem: null\n });\n\n return gaps;",
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[2025-12-07T21:05:32.675Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01BfCp1Qj5S7HXdPJ11Q5fxz","type":"tool_result","content":[{"type":"text","text":"Excellent! Now I have a comprehensive understanding of the codebase. Let me create a detailed analysis document:\n\n## Comprehensive Analysis: Video Timeline Application Data Flow\n\nI've thoroughly explored the codebase and can now provide you with a complete understanding of how the application works, from page load to preview display. Here's the detailed breakdown:\n\n---\n\n## 1. PAGE LOAD AND LOCALSTORAGE INITIALIZATION\n\n### Entry Point: Main Bootstrap\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/main.ts` (lines 1-6)\n\n```typescript\nbootstrapApplication(App, appConfig)\n .catch((err) => console.error(err));\n```\n\nThe Angular app bootstraps with the root `App` component which imports the `TimelineComponent`.\n\n### Constructor Initialization\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 120-147)\n\nThis is where the magic happens on page load:\n\n```typescript\nconstructor(\n private dragDropService: TimelineDragDropService,\n public playbackService: PlaybackService,\n private storageService: TimelineStorageService\n) {\n // **STEP 1: Load saved state from LocalStorage on initialization**\n const savedState = this.storageService.loadState();\n if (savedState) {\n this.state.set(savedState); // Line 128: Restore from LocalStorage\n }\n\n // **STEP 2: Effect to sync playhead position from PlaybackService during playback**\n effect(() => {\n if (this.playbackService.isPlaying()) {\n const position = this.playbackService.playheadPosition();\n this.state.update(s => ({\n ...s,\n playheadPosition: position\n }));\n }\n });\n\n // **STEP 3: Effect to auto-save timeline state to LocalStorage on any change**\n effect(() => {\n const currentState = this.state();\n this.storageService.saveState(currentState); // Line 145: Auto-save enabled\n });\n}\n```\n\n### LocalStorage Service Details\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/timeline-storage.service.ts` (lines 1-56)\n\n```typescript\n@Injectable({\n providedIn: 'root'\n})\nexport class Timel************rvice {\n private readonly STORAGE_KEY = 'video-timeline-state';\n\n /**\n * Load timeline state from LocalStorage (lines 26-37)\n * Returns null if no saved state exists or if loading fails\n */\n loadState(): TimelineState | null {\n try {\n const serialized = localStorage.getItem(this.STORAGE_KEY); // Line 28\n if (serialized) {\n return JSON.parse(serialized) as TimelineState; // Line 30\n }\n return null;\n } catch (error) {\n console.error('Failed to load timeline state from LocalStorage:', error);\n return null;\n }\n }\n\n /**\n * Save timeline state to LocalStorage (lines 13-20)\n */\n saveState(state: TimelineState): void {\n try {\n const serialized = JSON.stringify(state); // Line 15\n localStorage.setItem(this.STORAGE_KEY, serialized); // Line 16\n } catch (error) {\n console.error('Failed to save timeline state to LocalStorage:', error);\n }\n }\n}\n```\n\n**Key Points**:\n- Storage key: `'video-timeline-state'`\n- Stores complete `TimelineState` object (tracks, items, playhead position, zoom level, total duration, selected item)\n- Auto-saves every time the state changes via Angular's `effect()` (reactive dependency tracking)\n\n---\n\n## 2. PREVIEW CANVAS INITIALIZATION AND RENDER LOOP\n\n### Canvas Setup on View Init\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 149-157)\n\n```typescript\nngAfterViewInit(): void {\n // Initialize canvas for preview rendering (lines 151-153)\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement); // Line 152\n }\n\n // Start continuous render loop for preview (lines 156)\n // Renders current frame even when paused\n this.startRenderLoop(); // Line 156\n}\n```\n\n### Canvas HTML Template\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.html` (lines 22-31)\n\n```html\n<!-- Video Preview Area -->\n<div class=\"flex justify-center items-center py-6 bg-[#252525] border-b border-[#3a3a3a]\">\n <div class=\"flex flex-col items-center gap-3\">\n <!-- Video Preview Canvas -->\n <div class=\"w-[640px] h-[360px] bg-[#1a1a1a] rounded-lg border border-[#3a3a3a] flex items-center justify-center overflow-hidden\">\n <canvas #previewCanvas\n [width]=\"PREVIEW_WIDTH\" <!-- 640px -->\n [height]=\"PREVIEW_HEIGHT\" <!-- 360px -->\n class=\"w-full h-full\">\n </canvas>\n </div>\n```\n\n**Canvas Dimensions**: \n- PREVIEW_WIDTH = 640px (line 28)\n- PREVIEW_HEIGHT = 360px (line 29)\n\n### Continuous Render Loop\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 174-184)\n\n```typescript\n/**\n * Continuous render loop for preview canvas.\n * Keeps rendering even when paused so seeking updates the preview.\n */\nprivate startRenderLoop(): void {\n const render = () => {\n // Only render if we have active media and are not playing\n // (PlaybackService handles rendering during playback)\n if (!this.playbackService.isPlaying()) {\n this.playbackService.renderCurrentFrame(); // Line 179: Render when paused\n }\n this.renderLoopId = requestAnimationFrame(render); // Line 181: Schedule next frame\n };\n this.renderLoopId = requestAnimationFrame(render); // Line 183: Start the loop\n}\n```\n\n**Critical Behavior**: \n- The render loop runs continuously via `requestAnimationFrame`\n- When NOT playing: calls `renderCurrentFrame()` to update preview\n- When playing: PlaybackService handles rendering directly during its animation loop\n- This ensures preview updates when seeking/pausing\n\n---\n\n## 3. PREVIEW RENDERING MECHANISM\n\n### PlaybackService Canvas Setup\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 49-52)\n\n```typescript\n/**\n * Set the canvas element for rendering video/image preview\n */\nsetCanvas(canvas: HTMLCanvasElement): void {\n this.canvas = canvas;\n this.canvasContext = canvas.getContext('2d'); // Line 51: Get 2D rendering context\n}\n```\n\n### Main Render Method\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 285-304)\n\n```typescript\n/**\n * Render active media to canvas with proper layering\n */\nprivate renderToCanvas(): void {\n if (!this.canvas || !this.canvasContext) return;\n\n const ctx = this.canvasContext;\n const canvasWidth = this.canvas.width; // 640px\n const canvasHeight = this.canvas.height; // 360px\n\n // Clear canvas with dark background (line 293-294)\n ctx.fillStyle = '#1a1a1a';\n ctx.fillRect(0, 0, canvasWidth, canvasHeight);\n\n // Get active media sorted by track order (higher order = bottom layer)\n const sortedMedia = Array.from(this.activeMediaMap.values())\n .sort((a, b) => b.trackOrder - a.trackOrder);\n\n // Render each media item (lines 301-303)\n for (const activeMedia of sortedMedia) {\n this.renderMediaItem(activeMedia, ctx, canvasWidth, canvasHeight);\n }\n}\n```\n\n### Individual Media Item Rendering\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 309-350)\n\n```typescript\n/**\n * Render a single media item to canvas with proper scaling\n */\nprivate renderMediaItem(\n activeMedia: ActiveMedia,\n ctx: CanvasRenderingContext2D,\n canvasWidth: number,\n canvasHeight: number\n): void {\n const { element, item } = activeMedia;\n\n // Only render video and image types (line 318)\n if (item.type === MediaType.AUDIO) return;\n\n let source: CanvasImageSource | null = null;\n let sourceWidth = 0;\n let sourceHeight = 0;\n\n // Get source and dimensions based on media type (lines 324-336)\n if (element instanceof HTMLVideoElement) {\n // Check if video has loaded enough to render\n if (element.readyState < 2) return; // Line 326: Wait for video metadata\n source = element;\n sourceWidth = element.videoWidth;\n sourceHeight = element.videoHeight;\n } else if (element instanceof HTMLImageElement) {\n // Check if image is loaded\n if (!element.complete || element.naturalWidth === 0) return; // Line 332\n source = element;\n sourceWidth = element.naturalWidth;\n sourceHeight = element.naturalHeight;\n }\n\n if (!source || sourceWidth === 0 || sourceHeight === 0) return;\n\n // Calculate scaled dimensions maintaining aspect ratio (lines 341-346)\n const { width, height, x, y } = this.calculateScaledDimensions(\n sourceWidth,\n sourceHeight,\n canvasWidth,\n canvasHeight\n );\n\n // Draw the media (line 349)\n ctx.drawImage(source, x, y, width, height);\n}\n```\n\n### Dimension Scaling (Aspect Ratio Preservation)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 355-382)\n\n```typescript\n/**\n * Calculate dimensions for media that fit within canvas while preserving aspect ratio\n */\nprivate calculateScaledDimensions(\n sourceWidth: number,\n sourceHeight: number,\n canvasWidth: number,\n canvasHeight: number\n): { width: number; height: number; x: number; y: number } {\n const sourceAspect = sourceWidth / sourceHeight;\n const canvasAspect = canvasWidth / canvasHeight;\n\n let width: number;\n let height: number;\n\n if (sourceAspect > canvasAspect) {\n // Source is wider - fit to width (line 369-370)\n width = canvasWidth;\n height = canvasWidth / sourceAspect;\n } else {\n // Source is taller - fit to height (line 373-374)\n height = canvasHeight;\n width = canvasHeight * sourceAspect;\n }\n\n // Center the media (lines 378-379)\n const x = (canvasWidth - width) / 2;\n const y = (canvasHeight - height) / 2;\n\n return { width, height, x, y };\n}\n```\n\n---\n\n## 4. MEDIA SYNCHRONIZATION AND FRAME RENDERING\n\n### Force Render Current Frame (Called from Timeline Render Loop)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 428-430)\n\n```typescript\n/**\n * Force render the current state to canvas (useful when paused)\n */\nrenderCurrentFrame(): void {\n this.renderToCanvas(); // Line 429: Calls the main render function\n}\n```\n\n### Seek Operation (Updates Preview on Playhead Movement)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 397-423)\n\n```typescript\n/**\n * Seek to a specific position and update media accordingly\n */\nseek(tracks: Track[], position: number): void {\n this._playheadPosition.set(position); // Line 398\n\n // Update all active media positions (lines 401-416)\n for (const activeMedia of this.activeMediaMap.values()) {\n const { item, element } = activeMedia;\n const itemEnd = item.startTime + item.duration;\n\n // Check if media should still be active at new position\n if (position < item.startTime || position >= itemEnd) {\n // Media should no longer be active\n this.stopMedia(activeMedia);\n this.activeMediaMap.delete(item.id);\n } else if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n // Seek to correct position in media\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = position - item.startTime;\n element.currentTime = (mediaStartTime + offsetInItem) / 1000; // Line 414\n }\n }\n\n // Synchronize to add any new media that should be active (line 419)\n this.synchronizeMedia(tracks, position);\n\n // Render current frame (line 422)\n this.renderToCanvas();\n}\n```\n\n---\n\n## 5. DATA FLOW DIAGRAM\n\n```\nPAGE LOAD\n ↓\nTimelineComponent Constructor (line 120-147)\n β”œβ”€β†’ storageService.loadState() (TimelineStorageService line 26-37)\n β”‚ └─→ localStorage.getItem('video-timeline-state')\n β”‚ └─→ JSON.parse(serialized) β†’ TimelineState object\n β”œβ”€β†’ state.set(savedState) (line 128)\n β”‚ └─→ Updates all timeline UI with loaded data\n β”œβ”€β†’ effect(() => { auto-save state to localStorage }) (lines 142-146)\n β”‚ └─→ Triggers whenever state changes\n └─→ ngAfterViewInit() (line 149-157)\n β”œβ”€β†’ playbackService.setCanvas(canvasElement) (line 152)\n β”‚ └─→ Store canvas reference and 2D context\n └─→ startRenderLoop() (line 156)\n └─→ Continuous reque***********Frame loop\n └─→ When NOT playing: renderCurrentFrame()\n └─→ renderToCanvas()\n β”œβ”€β†’ Clear canvas with #1a1a1a\n β”œβ”€β†’ Get active media at current playhead position\n β”œβ”€β†’ synchronizeMedia() - start/stop media elements\n └─→ For each active media:\n β”œβ”€β†’ Wait for video/image to be ready\n β”œβ”€β†’ calculateScaledDimensions() - fit to canvas\n └─→ ctx.drawImage() - render to canvas\n```\n\n---\n\n## 6. WHAT TRIGGERS PREVIEW GENERATION\n\n### Triggers for Preview Update:\n\n1. **Continuous Render Loop** (Timeline Component, line 174-184)\n - Runs every animation frame (60fps)\n - Calls `renderCurrentFrame()` when NOT playing\n\n2. **Playhead Movement/Seeking** (Timeline Component, lines 240-262, 564-588)\n - User clicks on ruler β†’ `onRulerPointerDown()` (line 240)\n - Updates playheadPosition\n - Calls `playbackService.seek()` (line 261)\n - `seek()` calls `synchronizeMedia()` then `renderToCanvas()` (lines 419-422)\n\n3. **Playback Start** (Timeline Component, lines 836-848)\n - `togglePlayback()` calls `playbackService.play()` (line 845)\n - PlaybackService runs its own animation loop (line 118-150)\n - Each frame: calls `synchronizeMedia()` and `renderToCanvas()` (lines 138-141)\n\n4. **Skip Forward/Backward** (Timeline Component, lines 850-874)\n - Updates playhead position\n - Calls `playbackService.seek()` for immediate preview update\n\n---\n\n## 7. STATE PERSISTENCE AND DATA FLOW\n\n### What Gets Saved to LocalStorage:\n\n**TimelineState Object** (from `/app/models/timeline.models.ts`):\n\n```typescript\nexport interface TimelineState {\n tracks: Track[]; // Array of track objects with items\n playheadPosition: number; // Current playhead position in ms\n zoomLevel: number; // Zoom level (pixels per second)\n totalDuration: number; // Total timeline duration in ms\n selectedItemId: string | null; // Currently selected item ID\n}\n```\n\n### Track and MediaItem Structure:\n\n```typescript\nexport interface Track {\n id: string;\n name: string;\n order: number;\n items: MediaItem[];\n}\n\nexport interface MediaItem {\n id: string;\n type: MediaType; // 'video', 'audio', or 'image'\n startTime: number; // Position on timeline (ms)\n duration: number; // Duration displayed (ms)\n mediaStartTime?: number; // Offset into source media (ms)\n maxDuration?: number; // Max duration for placeholders (ms)\n trackId: string;\n name?: string;\n url?: string; // URL to actual media file\n isPlaceholder?: boolean;\n}\n```\n\n---\n\n## 8. POTENTIAL ISSUES WITH PREVIEW NOT SHOWING ON LOCALSTORAGE LOAD\n\n### Known Issues:\n\n1. **Missing Media URL**: If loaded items don't have a `url` property:\n - `synchronizeMedia()` skips items without URLs (line 167)\n - No media elements are created\n - Canvas renders only the background (#1a1a1a)\n\n2. **Media Elements Not Ready**: \n - Video: `readyState < 2` β†’ skips rendering (line 326)\n - Image: `!element.complete || element.naturalWidth === 0` β†’ skips (line 332)\n - Preview may show blank canvas while media loads\n\n3. **Playhead at Empty Position**:\n - If playhead is not within any media item's time range\n - No active media to render\n - Canvas shows only background\n\n4. **Canvas Not Initialized**:\n - If `ngAfterViewInit()` doesn't run (rare)\n - Canvas reference is null\n - `renderToCanvas()` returns early (line 286)\n\n---\n\n## 9. KEY FILES SUMMARY\n\n| File | Purpose | Key Lines |\n|------|---------|-----------|\n| `/timeline.component.ts` | Main component, state management, render loop | 120-147, 149-157, 174-184 |\n| `/timeline-storage.service.ts` | LocalStorage persistence | 26-37 (load), 13-20 (save) |\n| `/playback.service.ts` | Media playback and canvas rendering | 49-52 (setup), 285-304 (render), 397-423 (seek) |\n| `/timeline.component.html` | Canvas template and UI | 25-30 (canvas definition) |\n| `/timeline.models.ts` | Type definitions | 27-33 (TimelineState) |\n\nThis comprehensive analysis shows exactly how data flows from page load through LocalStorage restoration to preview rendering on the canvas."}]}]},"parent_tool_use_id":null,"session_id":"d72d4e5a-5602-4ad4-bda1-87c785c0c8db","uuid":"ee1b92b2-1ced-4e7b-9bde-4ada69cba877","tool_use_result":{"status":"completed","prompt":"I need to understand how this video timeline application works, specifically:\n\n1. Where and how project data is loaded from LocalStorage on page load\n2. Where the first frame preview is generated/rendered\n3. What triggers the preview generation\n4. Why the preview might not be showing when loading from LocalStorage\n\nPlease explore the codebase thoroughly and provide:\n- File paths and line numbers for key functions\n- How the data flow works from page load β†’ LocalStorage read β†’ preview display\n- Any event handlers or initialization code that runs on page load\n- The mechanism for displaying video frame previews\n\nFocus on JavaScript/TypeScript files that handle initialization, LocalStorage, and video preview rendering.","agentId":"0e228aa3","content":[{"type":"text","text":"Excellent! Now I have a comprehensive understanding of the codebase. Let me create a detailed analysis document:\n\n## Comprehensive Analysis: Video Timeline Application Data Flow\n\nI've thoroughly explored the codebase and can now provide you with a complete understanding of how the application works, from page load to preview display. Here's the detailed breakdown:\n\n---\n\n## 1. PAGE LOAD AND LOCALSTORAGE INITIALIZATION\n\n### Entry Point: Main Bootstrap\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/main.ts` (lines 1-6)\n\n```typescript\nbootstrapApplication(App, appConfig)\n .catch((err) => console.error(err));\n```\n\nThe Angular app bootstraps with the root `App` component which imports the `TimelineComponent`.\n\n### Constructor Initialization\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 120-147)\n\nThis is where the magic happens on page load:\n\n```typescript\nconstructor(\n private dragDropService: TimelineDragDropService,\n public playbackService: PlaybackService,\n private storageService: TimelineStorageService\n) {\n // **STEP 1: Load saved state from LocalStorage on initialization**\n const savedState = this.storageService.loadState();\n if (savedState) {\n this.state.set(savedState); // Line 128: Restore from LocalStorage\n }\n\n // **STEP 2: Effect to sync playhead position from PlaybackService during playback**\n effect(() => {\n if (this.playbackService.isPlaying()) {\n const position = this.playbackService.playheadPosition();\n this.state.update(s => ({\n ...s,\n playheadPosition: position\n }));\n }\n });\n\n // **STEP 3: Effect to auto-save timeline state to LocalStorage on any change**\n effect(() => {\n const currentState = this.state();\n this.storageService.saveState(currentState); // Line 145: Auto-save enabled\n });\n}\n```\n\n### LocalStorage Service Details\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/timeline-storage.service.ts` (lines 1-56)\n\n```typescript\n@Injectable({\n providedIn: 'root'\n})\nexport class Timel************rvice {\n private readonly STORAGE_KEY = 'video-timeline-state';\n\n /**\n * Load timeline state from LocalStorage (lines 26-37)\n * Returns null if no saved state exists or if loading fails\n */\n loadState(): TimelineState | null {\n try {\n const serialized = localStorage.getItem(this.STORAGE_KEY); // Line 28\n if (serialized) {\n return JSON.parse(serialized) as TimelineState; // Line 30\n }\n return null;\n } catch (error) {\n console.error('Failed to load timeline state from LocalStorage:', error);\n return null;\n }\n }\n\n /**\n * Save timeline state to LocalStorage (lines 13-20)\n */\n saveState(state: TimelineState): void {\n try {\n const serialized = JSON.stringify(state); // Line 15\n localStorage.setItem(this.STORAGE_KEY, serialized); // Line 16\n } catch (error) {\n console.error('Failed to save timeline state to LocalStorage:', error);\n }\n }\n}\n```\n\n**Key Points**:\n- Storage key: `'video-timeline-state'`\n- Stores complete `TimelineState` object (tracks, items, playhead position, zoom level, total duration, selected item)\n- Auto-saves every time the state changes via Angular's `effect()` (reactive dependency tracking)\n\n---\n\n## 2. PREVIEW CANVAS INITIALIZATION AND RENDER LOOP\n\n### Canvas Setup on View Init\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 149-157)\n\n```typescript\nngAfterViewInit(): void {\n // Initialize canvas for preview rendering (lines 151-153)\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement); // Line 152\n }\n\n // Start continuous render loop for preview (lines 156)\n // Renders current frame even when paused\n this.startRenderLoop(); // Line 156\n}\n```\n\n### Canvas HTML Template\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.html` (lines 22-31)\n\n```html\n<!-- Video Preview Area -->\n<div class=\"flex justify-center items-center py-6 bg-[#252525] border-b border-[#3a3a3a]\">\n <div class=\"flex flex-col items-center gap-3\">\n <!-- Video Preview Canvas -->\n <div class=\"w-[640px] h-[360px] bg-[#1a1a1a] rounded-lg border border-[#3a3a3a] flex items-center justify-center overflow-hidden\">\n <canvas #previewCanvas\n [width]=\"PREVIEW_WIDTH\" <!-- 640px -->\n [height]=\"PREVIEW_HEIGHT\" <!-- 360px -->\n class=\"w-full h-full\">\n </canvas>\n </div>\n```\n\n**Canvas Dimensions**: \n- PREVIEW_WIDTH = 640px (line 28)\n- PREVIEW_HEIGHT = 360px (line 29)\n\n### Continuous Render Loop\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts` (lines 174-184)\n\n```typescript\n/**\n * Continuous render loop for preview canvas.\n * Keeps rendering even when paused so seeking updates the preview.\n */\nprivate startRenderLoop(): void {\n const render = () => {\n // Only render if we have active media and are not playing\n // (PlaybackService handles rendering during playback)\n if (!this.playbackService.isPlaying()) {\n this.playbackService.renderCurrentFrame(); // Line 179: Render when paused\n }\n this.renderLoopId = requestAnimationFrame(render); // Line 181: Schedule next frame\n };\n this.renderLoopId = requestAnimationFrame(render); // Line 183: Start the loop\n}\n```\n\n**Critical Behavior**: \n- The render loop runs continuously via `requestAnimationFrame`\n- When NOT playing: calls `renderCurrentFrame()` to update preview\n- When playing: PlaybackService handles rendering directly during its animation loop\n- This ensures preview updates when seeking/pausing\n\n---\n\n## 3. PREVIEW RENDERING MECHANISM\n\n### PlaybackService Canvas Setup\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 49-52)\n\n```typescript\n/**\n * Set the canvas element for rendering video/image preview\n */\nsetCanvas(canvas: HTMLCanvasElement): void {\n this.canvas = canvas;\n this.canvasContext = canvas.getContext('2d'); // Line 51: Get 2D rendering context\n}\n```\n\n### Main Render Method\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 285-304)\n\n```typescript\n/**\n * Render active media to canvas with proper layering\n */\nprivate renderToCanvas(): void {\n if (!this.canvas || !this.canvasContext) return;\n\n const ctx = this.canvasContext;\n const canvasWidth = this.canvas.width; // 640px\n const canvasHeight = this.canvas.height; // 360px\n\n // Clear canvas with dark background (line 293-294)\n ctx.fillStyle = '#1a1a1a';\n ctx.fillRect(0, 0, canvasWidth, canvasHeight);\n\n // Get active media sorted by track order (higher order = bottom layer)\n const sortedMedia = Array.from(this.activeMediaMap.values())\n .sort((a, b) => b.trackOrder - a.trackOrder);\n\n // Render each media item (lines 301-303)\n for (const activeMedia of sortedMedia) {\n this.renderMediaItem(activeMedia, ctx, canvasWidth, canvasHeight);\n }\n}\n```\n\n### Individual Media Item Rendering\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 309-350)\n\n```typescript\n/**\n * Render a single media item to canvas with proper scaling\n */\nprivate renderMediaItem(\n activeMedia: ActiveMedia,\n ctx: CanvasRenderingContext2D,\n canvasWidth: number,\n canvasHeight: number\n): void {\n const { element, item } = activeMedia;\n\n // Only render video and image types (line 318)\n if (item.type === MediaType.AUDIO) return;\n\n let source: CanvasImageSource | null = null;\n let sourceWidth = 0;\n let sourceHeight = 0;\n\n // Get source and dimensions based on media type (lines 324-336)\n if (element instanceof HTMLVideoElement) {\n // Check if video has loaded enough to render\n if (element.readyState < 2) return; // Line 326: Wait for video metadata\n source = element;\n sourceWidth = element.videoWidth;\n sourceHeight = element.videoHeight;\n } else if (element instanceof HTMLImageElement) {\n // Check if image is loaded\n if (!element.complete || element.naturalWidth === 0) return; // Line 332\n source = element;\n sourceWidth = element.naturalWidth;\n sourceHeight = element.naturalHeight;\n }\n\n if (!source || sourceWidth === 0 || sourceHeight === 0) return;\n\n // Calculate scaled dimensions maintaining aspect ratio (lines 341-346)\n const { width, height, x, y } = this.calculateScaledDimensions(\n sourceWidth,\n sourceHeight,\n canvasWidth,\n canvasHeight\n );\n\n // Draw the media (line 349)\n ctx.drawImage(source, x, y, width, height);\n}\n```\n\n### Dimension Scaling (Aspect Ratio Preservation)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 355-382)\n\n```typescript\n/**\n * Calculate dimensions for media that fit within canvas while preserving aspect ratio\n */\nprivate calculateScaledDimensions(\n sourceWidth: number,\n sourceHeight: number,\n canvasWidth: number,\n canvasHeight: number\n): { width: number; height: number; x: number; y: number } {\n const sourceAspect = sourceWidth / sourceHeight;\n const canvasAspect = canvasWidth / canvasHeight;\n\n let width: number;\n let height: number;\n\n if (sourceAspect > canvasAspect) {\n // Source is wider - fit to width (line 369-370)\n width = canvasWidth;\n height = canvasWidth / sourceAspect;\n } else {\n // Source is taller - fit to height (line 373-374)\n height = canvasHeight;\n width = canvasHeight * sourceAspect;\n }\n\n // Center the media (lines 378-379)\n const x = (canvasWidth - width) / 2;\n const y = (canvasHeight - height) / 2;\n\n return { width, height, x, y };\n}\n```\n\n---\n\n## 4. MEDIA SYNCHRONIZATION AND FRAME RENDERING\n\n### Force Render Current Frame (Called from Timeline Render Loop)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 428-430)\n\n```typescript\n/**\n * Force render the current state to canvas (useful when paused)\n */\nrenderCurrentFrame(): void {\n this.renderToCanvas(); // Line 429: Calls the main render function\n}\n```\n\n### Seek Operation (Updates Preview on Playhead Movement)\n**File**: `/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/services/playback.service.ts` (lines 397-423)\n\n```typescript\n/**\n * Seek to a specific position and update media accordingly\n */\nseek(tracks: Track[], position: number): void {\n this._playheadPosition.set(position); // Line 398\n\n // Update all active media positions (lines 401-416)\n for (const activeMedia of this.activeMediaMap.values()) {\n const { item, element } = activeMedia;\n const itemEnd = item.startTime + item.duration;\n\n // Check if media should still be active at new position\n if (position < item.startTime || position >= itemEnd) {\n // Media should no longer be active\n this.stopMedia(activeMedia);\n this.activeMediaMap.delete(item.id);\n } else if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n // Seek to correct position in media\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = position - item.startTime;\n element.currentTime = (mediaStartTime + offsetInItem) / 1000; // Line 414\n }\n }\n\n // Synchronize to add any new media that should be active (line 419)\n this.synchronizeMedia(tracks, position);\n\n // Render current frame (line 422)\n this.renderToCanvas();\n}\n```\n\n---\n\n## 5. DATA FLOW DIAGRAM\n\n```\nPAGE LOAD\n ↓\nTimelineComponent Constructor (line 120-147)\n β”œβ”€β†’ storageService.loadState() (TimelineStorageService line 26-37)\n β”‚ └─→ localStorage.getItem('video-timeline-state')\n β”‚ └─→ JSON.parse(serialized) β†’ TimelineState object\n β”œβ”€β†’ state.set(savedState) (line 128)\n β”‚ └─→ Updates all timeline UI with loaded data\n β”œβ”€β†’ effect(() => { auto-save state to localStorage }) (lines 142-146)\n β”‚ └─→ Triggers whenever state changes\n └─→ ngAfterViewInit() (line 149-157)\n β”œβ”€β†’ playbackService.setCanvas(canvasElement) (line 152)\n β”‚ └─→ Store canvas reference and 2D context\n └─→ startRenderLoop() (line 156)\n └─→ Continuous reque***********Frame loop\n └─→ When NOT playing: renderCurrentFrame()\n └─→ renderToCanvas()\n β”œβ”€β†’ Clear canvas with #1a1a1a\n β”œβ”€β†’ Get active media at current playhead position\n β”œβ”€β†’ synchronizeMedia() - start/stop media elements\n └─→ For each active media:\n β”œβ”€β†’ Wait for video/image to be ready\n β”œβ”€β†’ calculateScaledDimensions() - fit to canvas\n └─→ ctx.drawImage() - render to canvas\n```\n\n---\n\n## 6. WHAT TRIGGERS PREVIEW GENERATION\n\n### Triggers for Preview Update:\n\n1. **Continuous Render Loop** (Timeline Component, line 174-184)\n - Runs every animation frame (60fps)\n - Calls `renderCurrentFrame()` when NOT playing\n\n2. **Playhead Movement/Seeking** (Timeline Component, lines 240-262, 564-588)\n - User clicks on ruler β†’ `onRulerPointerDown()` (line 240)\n - Updates playheadPosition\n - Calls `playbackService.seek()` (line 261)\n - `seek()` calls `synchronizeMedia()` then `renderToCanvas()` (lines 419-422)\n\n3. **Playback Start** (Timeline Component, lines 836-848)\n - `togglePlayback()` calls `playbackService.play()` (line 845)\n - PlaybackService runs its own animation loop (line 118-150)\n - Each frame: calls `synchronizeMedia()` and `renderToCanvas()` (lines 138-141)\n\n4. **Skip Forward/Backward** (Timeline Component, lines 850-874)\n - Updates playhead position\n - Calls `playbackService.seek()` for immediate preview update\n\n---\n\n## 7. STATE PERSISTENCE AND DATA FLOW\n\n### What Gets Saved to LocalStorage:\n\n**TimelineState Object** (from `/app/models/timeline.models.ts`):\n\n```typescript\nexport interface TimelineState {\n tracks: Track[]; // Array of track objects with items\n playheadPosition: number; // Current playhead position in ms\n zoomLevel: number; // Zoom level (pixels per second)\n totalDuration: number; // Total timeline duration in ms\n selectedItemId: string | null; // Currently selected item ID\n}\n```\n\n### Track and MediaItem Structure:\n\n```typescript\nexport interface Track {\n id: string;\n name: string;\n order: number;\n items: MediaItem[];\n}\n\nexport interface MediaItem {\n id: string;\n type: MediaType; // 'video', 'audio', or 'image'\n startTime: number; // Position on timeline (ms)\n duration: number; // Duration displayed (ms)\n mediaStartTime?: number; // Offset into source media (ms)\n maxDuration?: number; // Max duration for placeholders (ms)\n trackId: string;\n name?: string;\n url?: string; // URL to actual media file\n isPlaceholder?: boolean;\n}\n```\n\n---\n\n## 8. POTENTIAL ISSUES WITH PREVIEW NOT SHOWING ON LOCALSTORAGE LOAD\n\n### Known Issues:\n\n1. **Missing Media URL**: If loaded items don't have a `url` property:\n - `synchronizeMedia()` skips items without URLs (line 167)\n - No media elements are created\n - Canvas renders only the background (#1a1a1a)\n\n2. **Media Elements Not Ready**: \n - Video: `readyState < 2` β†’ skips ren
[2025-12-07T21:05:32.684Z] [INFO] dering (line 326)\n - Image: `!element.complete || element.naturalWidth === 0` β†’ skips (line 332)\n - Preview may show blank canvas while media loads\n\n3. **Playhead at Empty Position**:\n - If playhead is not within any media item's time range\n - No active media to render\n - Canvas shows only background\n\n4. **Canvas Not Initialized**:\n - If `ngAfterViewInit()` doesn't run (rare)\n - Canvas reference is null\n - `renderToCanvas()` returns early (line 286)\n\n---\n\n## 9. KEY FILES SUMMARY\n\n| File | Purpose | Key Lines |\n|------|---------|-----------|\n| `/timeline.component.ts` | Main component, state management, render loop | 120-147, 149-157, 174-184 |\n| `/timeline-storage.service.ts` | LocalStorage persistence | 26-37 (load), 13-20 (save) |\n| `/playback.service.ts` | Media playback and canvas rendering | 49-52 (setup), 285-304 (render), 397-423 (seek) |\n| `/timeline.component.html` | Canvas template and UI | 25-30 (canvas definition) |\n| `/timeline.models.ts` | Type definitions | 27-33 (TimelineState) |\n\nThis comprehensive analysis shows exactly how data flows from page load through LocalStorage restoration to preview rendering on the canvas."}],"totalDurationMs":53052,"totalTokens":53213,"totalToolUseCount":14,"usage":{"input_tokens":5,"cache_creation_input_tokens":1542,"cache_read_input_tokens":46711,"cache_creation":{"ephemeral_5m_input_tokens":1542,"ephemeral_1h_input_tokens":0},"output_tokens":4955,"service_tier":"standard"}}}
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"content": " 120β†’ constructor(\n 121β†’ private dragDropService: TimelineDragDropService,\n 122β†’ public playbackService: PlaybackService,\n 123β†’ private storageService: TimelineStorageService\n 124β†’ ) {\n 125β†’ // Load saved state from LocalStorage on initialization\n 126β†’ const savedState = this.storageService.loadState();\n 127β†’ if (savedState) {\n 128β†’ this.state.set(savedState);\n 129β†’ }\n 130β†’\n 131β†’ // Effect to sync playhead position from PlaybackService during playback\n 132β†’ effect(() => {\n 133β†’ if (this.playbackService.isPlaying()) {\n 134β†’ const position = this.playbackService.playheadPosition();\n 135β†’ this.state.update(s => ({\n 136β†’ ...s,\n 137β†’ playheadPosition: position\n 138β†’ }));\n 139β†’ }\n 140β†’ });\n 141β†’\n 142β†’ // Effect to auto-save timeline state to LocalStorage on any change\n 143β†’ effect(() => {\n 144β†’ const currentState = this.state();\n 145β†’ this.storageService.saveState(currentState);\n 146β†’ });\n 147β†’ }\n 148β†’\n 149β†’ ngAfterViewInit(): void {\n 150β†’ // Initialize canvas for preview rendering\n 151β†’ if (this.previewCanvas) {\n 152β†’ this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n 153β†’ }\n 154β†’\n 155β†’ // Start continuous render loop for preview (renders current frame even when paused)\n 156β†’ this.startRenderLoop();\n 157β†’ }\n 158β†’\n 159β†’ ngOnDestroy(): void {\n 160β†’ // Clean up render loop\n 161β†’ if (this.renderLoopId !== null) {\n 162β†’ cancelAnimationFrame(this.renderLoopId);\n 163β†’ this.renderLoopId = null;\n 164β†’ }\n 165β†’\n 166β†’ // Stop playback\n 167β†’ this.playbackService.stop();\n 168β†’ }\n 169β†’\n 170β†’ /**\n 171β†’ * Continuous render loop for preview canvas.\n 172β†’ * Keeps rendering even when paused so seeking updates the preview.\n 173β†’ */\n 174β†’ private startRenderLoop(): void {\n 175β†’ const render = () => {\n 176β†’ // Only render if we have active media and are not playing\n 177β†’ // (PlaybackService handles rendering during playback)\n 178β†’ if (!this.playbackService.isPlaying()) {\n 179β†’ this.playbackService.renderCurrentFrame();\n 180β†’ }\n 181β†’ this.renderLoopId = requestAnimationFrame(render);\n 182β†’ };\n 183β†’ this.renderLoopId = requestAnimationFrame(render);\n 184β†’ }\n 185β†’\n 186β†’ // Track management\n 187β†’ addTrack(): void {\n 188β†’ const currentState = this.state();\n 189β†’ const newTrack: Track = {\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": " 1β†’import { Injectable, signal, computed } from '@angular/core';\n 2β†’import { MediaItem, MediaType, Track } from '../models/timeline.models';\n 3β†’\n 4β†’/**\n 5β†’ * Represents an active media element being played\n 6β†’ */\n 7β†’export interface ActiveMedia {\n 8β†’ item: MediaItem;\n 9β†’ element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n 10β†’ trackOrder: number; // For layering: higher order = rendered first (bottom layer)\n 11β†’}\n 12β†’\n 13β†’/**\n 14β†’ * Service responsible for managing real media playback.\n 15β†’ * Handles synchronization of media elements with timeline playhead position.\n 16β†’ */\n 17β†’@Injectable({\n 18β†’ providedIn: 'root'\n 19β†’})\n 20β†’export class PlaybackService {\n 21β†’ // Playback state\n 22β†’ private _isPlaying = signal<boolean>(false);\n 23β†’ private _playheadPosition = signal<number>(0);\n 24β†’ private animationFrameId: number | null = null;\n 25β†’ private lastFrameTime: number = 0;\n 26β†’\n 27β†’ // Active media elements\n 28β†’ private activeMediaMap = new Map<string, ActiveMedia>();\n 29β†’\n 30β†’ // Canvas reference for rendering\n 31β†’ private canvas: HTMLCanvasElement | null = null;\n 32β†’ private canvasContext: Canva**************ext2D | null = null;\n 33β†’\n 34β†’ // Exposed signals\n 35β†’ readonly isPlaying = this._isPlaying.asReadonly();\n 36β†’ readonly playheadPosition = this._playheadPosition.asReadonly();\n 37β†’\n 38β†’ // Computed: current active media items for rendering\n 39β†’ readonly activeMediaItems = computed(() => {\n 40β†’ return Array.from(this.activeMediaMap.values())\n 41β†’ .sort((a, b) => b.trackOrder - a.trackOrder);\n 42β†’ });\n 43β†’\n 44β†’ constructor() {}\n 45β†’\n 46β†’ /**\n 47β†’ * Set the canvas element for rendering video/image preview\n 48β†’ */\n 49β†’ setCanvas(canvas: HTMLCanvasElement): void {\n 50β†’ this.canvas = canvas;\n 51β†’ this.canvasContext = canvas.getContext('2d');\n 52β†’ }\n 53β†’\n 54β†’ /**\n 55β†’ * Update playhead position (called from timeline component)\n 56β†’ */\n 57β†’ setPlayheadPosition(position: number): void {\n 58β†’ this._playheadPosition.set(position);\n 59β†’ }\n 60β†’\n 61β†’ /**\n 62β†’ * Start playback\n 63β†’ */\n 64β†’ play(tracks: Track[], totalDuration: number): void {\n 65β†’ if (this._isPlaying()) return;\n 66β†’\n 67β†’ this._isPlaying.set(true);\n 68β†’\n 69β†’ // Start playing any already-loaded media elements\n 70β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 71β†’ if (activeMedia.element instanceof HTMLVideoElement) {\n 72β†’ const videoElement = activeMedia.element as HTMLVideoElement;\n 73β†’ videoElement.play().catch(() => {\n 74β†’ // Autoplay may be blocked, try muted\n 75β†’ videoElement.muted = true;\n 76β†’ videoElement.play().catch(() => {});\n 77β†’ });\n 78β†’ } else if (activeMedia.element instanceof HTMLAudioElement) {\n 79β†’ activeMedia.element.play().catch(() => {});\n 80β†’ }\n 81β†’ }\n 82β†’\n 83β†’ this.lastFrameTime = performance.now();\n 84β†’ this.startPlaybackLoop(tracks, totalDuration);\n 85β†’ }\n 86β†’\n 87β†’ /**\n 88β†’ * Pause playback\n 89β†’ */\n 90β†’ pause(): void {\n 91β†’ this._isPlaying.set(false);\n 92β†’ if (this.animationFrameId !== null) {\n 93β†’ cancelAnimationFrame(this.animationFrameId);\n 94β†’ this.animationFrameId = null;\n 95β†’ }\n 96β†’\n 97β†’ // Pause all active media\n 98β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 99β†’ if (activeMedia.element instanceof HTMLVideoElement ||\n 100β†’ activeMedia.element instanceof HTMLAudioElement) {\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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[2025-12-07T21:05:53.354Z] [INFO] {
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"content": " 155β†’ */\n 156β†’ private synchronizeMedia(tracks: Track[], playheadTime: number): void {\n 157β†’ // Collect all items that should be active at current time\n 158β†’ const shouldBeActive = new Map<string, { item: MediaItem; trackOrder: number }>();\n 159β†’\n 160β†’ for (const track of tracks) {\n 161β†’ for (const item of track.items) {\n 162β†’ const itemEnd = item.startTime + item.duration;\n 163β†’\n 164β†’ // Check if playhead is within item's time range\n 165β†’ if (playheadTime >= item.startTime && playheadTime < itemEnd) {\n 166β†’ // Skip placeholders without URL\n 167β†’ if (item.isPlaceholder || !item.url) continue;\n 168β†’\n 169β†’ shouldBeActive.set(item.id, { item, trackOrder: track.order });\n 170β†’ }\n 171β†’ }\n 172β†’ }\n 173β†’\n 174β†’ // Stop media that should no longer be active\n 175β†’ for (const [id, activeMedia] of this.activeMediaMap.entries()) {\n 176β†’ if (!shouldBeActive.has(id)) {\n 177β†’ this.stopMedia(activeMedia);\n 178β†’ this.activeMediaMap.delete(id);\n 179β†’ }\n 180β†’ }\n 181β†’\n 182β†’ // Start or update media that should be active\n 183β†’ for (const [id, { item, trackOrder }] of shouldBeActive.entries()) {\n 184β†’ if (!this.activeMediaMap.has(id)) {\n 185β†’ // Start new media\n 186β†’ this.startMedia(item, trackOrder, playheadTime);\n 187β†’ } else {\n 188β†’ // Update existing media position if needed\n 189β†’ this.updateMediaPosition(this.activeMediaMap.get(id)!, playheadTime);\n 190β†’ }\n 191β†’ }\n 192β†’ }\n 193β†’\n 194β†’ /**\n 195β†’ * Start playing a media item\n 196β†’ */\n 197β†’ private startMedia(item: MediaItem, trackOrder: number, playheadTime: number): void {\n 198β†’ if (!item.url) return;\n 199β†’\n 200β†’ const mediaStartTime = item.mediaStartTime || 0;\n 201β†’ const offsetInItem = playheadTime - item.startTime;\n 202β†’ const mediaTime = (mediaStartTime + offsetInItem) / 1000; // Convert to seconds\n 203β†’\n 204β†’ let element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n 205β†’\n 206β†’ switch (item.type) {\n 207β†’ case MediaType.VIDEO:\n 208β†’ element = document.createElement('video');\n 209β†’ (element as HTMLVideoElement).src = item.url;\n 210β†’ (element as HTMLVideoElement).currentTime = mediaTime;\n 211β†’ (element as HTMLVideoElement).muted = false;\n 212β†’ // Only play if playback is active\n 213β†’ if (this._isPlaying()) {\n 214β†’ (element as HTMLVideoElement).play().catch(() => {\n 215β†’ // Autoplay may be blocked, try muted\n 216β†’ (element as HTMLVideoElement).muted = true;\n 217β†’ (element as HTMLVideoElement).play().catch(() => {});\n 218β†’ });\n 219β†’ }\n 220β†’ break;\n 221β†’\n 222β†’ case MediaType.AUDIO:\n 223β†’ element = document.createElement('audio');\n 224β†’ (element as HTMLAudioElement).src = item.url;\n 225β†’ (element as HTMLAudioElement).currentTime = mediaTime;\n 226β†’ // Only play if playback is active\n 227β†’ if (this._isPlaying()) {\n 228β†’ (element as HTMLAudioElement).play().catch(() => {});\n 229β†’ }\n 230β†’ break;\n 231β†’\n 232β†’ case MediaType.IMAGE:\n 233β†’ element = document.createElement('img');\n 234β†’ (element as HTMLImageElement).src = item.url;\n 235β†’ (element as HTMLImageElement).crossOrigin = 'anonymous';\n 236β†’ break;\n 237β†’\n 238β†’ default:\n 239β†’ return;\n 240β†’ }\n 241β†’\n 242β†’ // For video, also set crossOrigin for canvas rendering\n 243β†’ if (element instanceof HTMLVideoElement) {\n 244β†’ element.crossOrigin = 'anonymous';\n 245β†’ }\n 246β†’\n 247β†’ this.activeMediaMap.set(item.id, { item, element, trackOrder });\n 248β†’ }\n 249β†’\n 250β†’ /**\n 251β†’ * Stop and cleanup a media element\n 252β†’ */\n 253β†’ private stopMedia(activeMedia: ActiveMedia): void {\n 254β†’ const { element } = activeMedia;\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": " */\n private synchronizeMedia(tracks: Track[], playheadTime: number): void {\n // Collect all items that should be active at current time\n const shouldBeActive = new Map<string, { item: MediaItem; trackOrder: number }>();\n\n for (const track of tracks) {\n for (const item of track.items) {\n const itemEnd = item.startTime + item.duration;\n\n // Check if playhead is within item's time range\n if (playheadTime >= item.startTime && playheadTime < itemEnd) {\n // Skip placeholders without URL\n if (item.isPlaceholder || !item.url) continue;\n\n shouldBeActive.set(item.id, { item, trackOrder: track.order });\n }\n }\n }\n\n // Stop media that should no longer be active\n for (const [id, activeMedia] of this.activeMediaMap.entries()) {\n if (!shouldBeActive.has(id)) {\n this.stopMedia(activeMedia);\n this.activeMediaMap.delete(id);\n }\n }\n\n // Start or update media that should be active\n for (const [id, { item, trackOrder }] of shouldBeActive.entries()) {\n if (!this.activeMediaMap.has(id)) {\n // Start new media\n this.startMedia(item, trackOrder, playheadTime);\n } else {\n // Update existing media position if needed\n this.updateMediaPosition(this.activeMediaMap.get(id)!, playheadTime);\n }\n }\n }\n\n /**\n * Start playing a media item\n */\n private startMedia(item: MediaItem, trackOrder: number, playheadTime: number): void {\n if (!item.url) return;\n\n const mediaStartTime = item.mediaStartTime || 0;\n const offsetInItem = playheadTime - item.startTime;\n const mediaTime = (mediaStartTime + offsetInItem) / 1000; // Convert to seconds\n\n let element: HTMLVideoElement | HTMLAudioElement | HTMLImageElement;\n\n switch (item.type) {\n case MediaType.VIDEO:\n element = document.createElement('video');\n (element as HTMLVideoElement).src = item.url;\n (element as HTMLVideoElement).currentTime = mediaTime;\n (element as HTMLVideoElement).muted = false;\n // Only play if playback is active\n if (this._isPlaying()) {\n (element as HTMLVideoElement).play().catch(() => {\n // Autoplay may be blocked, try muted\n (element as HTMLVideoElement).muted = true;\n (element as HTMLVideoElement).play().catch(() => {});\n });\n }\n break;\n\n case MediaType.AUDIO:\n element = document.createElement('audio');\n (element as HTMLAudioElement).src = item.url;\n (element as HTMLAudioElement).currentTime = mediaTime;\n // Only play if playback is active\n if (this._isPlaying()) {\n (element as HTMLAudioElement).play().catch(() => {});\n }\n break;\n\n case MediaType.IMAGE:\n element = document.createElement('img');\n (element as HTMLImageElement).src = item.url;\n (element as HTMLImageElement).crossOrigin = 'anonymous';\n break;\n\n default:\n return;\n }\n\n // For video, also set crossOrigin for canvas rendering\n if (element instanceof HTMLVideoElement) {\n element.crossOrigin = 'anonymous';\n }\n\n this.activeMediaMap.set(item.id, { item, element, trackOrder });\n }\n\n /**\n * Stop and cleanup a media element\n */\n private stopMedia(activeMedia: ActiveMedia): void {\n const { element } = activeMedia;",
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"text": "Now let me implement the fix. I need to add a seek call in ngAfterViewInit to synchronize media after loading from LocalStorage:"
}
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[2025-12-07T21:06:21.905Z] [INFO] {
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{
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"id": "toolu_0154NsXMJtA2JydSyF5mvGXz",
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"file_path": "/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts",
"old_string": " ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n }",
"new_string": " ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n\n // Synchronize media and render initial frame if state was loaded from LocalStorage\n const currentState = this.state();\n if (currentState.tracks.length > 0) {\n this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n }\n }"
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[2025-12-07T21:06:21.936Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_0154NsXMJtA2JydSyF5mvGXz","type":"tool_result","content":"The file /tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts has been updated. Here's the result of running `cat -n` on a snippet of the edited file:\n 145β†’ this.storageService.saveState(currentState);\n 146β†’ });\n 147β†’ }\n 148β†’\n 149β†’ ngAfterViewInit(): void {\n 150β†’ // Initialize canvas for preview rendering\n 151β†’ if (this.previewCanvas) {\n 152β†’ this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n 153β†’ }\n 154β†’\n 155β†’ // Start continuous render loop for preview (renders current frame even when paused)\n 156β†’ this.startRenderLoop();\n 157β†’\n 158β†’ // Synchronize media and render initial frame if state was loaded from LocalStorage\n 159β†’ const currentState = this.state();\n 160β†’ if (currentState.tracks.length > 0) {\n 161β†’ this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n 162β†’ }\n 163β†’ }\n 164β†’\n 165β†’ ngOnDestroy(): void {\n 166β†’ // Clean up render loop\n 167β†’ if (this.renderLoopId !== null) {"}]},"parent_tool_use_id":null,"session_id":"d72d4e5a-5602-4ad4-bda1-87c785c0c8db","uuid":"f7a9bdfb-00c3-4058-8003-7a7bc78bfe22","tool_use_result":{"filePath":"/tmp/gh-issue-solver-1765141430780/video-timeline/src/app/components/timeline/timeline.component.ts","oldString":" ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n }","newString":" ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n\n // Synchronize media and render initial frame if state was loaded from LocalStorage\n const currentState = this.state();\n if (currentState.tracks.length > 0) {\n this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n }\n }","originalFile":"import { Component, signal, computed, ViewChild, ElementRef, AfterViewInit, OnDestroy, effect } from '@angular/core';\nimport { CommonModule } from '@angular/common';\nimport { MediaType, MediaItem, Track, TimelineState } from '../../models/timeline.models';\nimport { MediaLibraryComponent, MediaLibraryItem } from '../media-library/media-library.component';\nimport { Media***********onent } from '../media-toolbar/media-toolbar.component';\nimport { Notif************onent } from '../notifications/notifications.component';\nimport { Timel*************rvice } from '../../services/timeline-drag-drop.service';\nimport { PlaybackService } from '../../services/playback.service';\nimport { Timel************rvice } from '../../services/timeline-storage.service';\n\n@Component({\n selector: 'app-timeline',\n standalone: true,\n imports: [CommonModule, MediaLibraryComponent, MediaToolbarComponent, NotificationsComponent],\n templateUrl: './timeline.component.html',\n styleUrl: './timeline.component.css'\n})\nexport class TimelineComponent implements AfterViewInit, OnDestroy {\n // Zoom levels: pixels per second\n private readonly MIN_ZOOM = 10;\n private readonly MAX_ZOOM = 200;\n private readonly ZOOM_STEP = 20;\n readonly TRACK_HEADER_WIDTH = 150; // Width of track header in pixels\n private readonly SNAP_PROXIMITY_MS = 500; // Snap to item if playhead is within 500ms\n private readonly MIN_ITEM_DURATION = 100; // Minimum item duration in milliseconds\n\n // Canvas dimensions for preview\n readonly PREVIEW_WIDTH = 640;\n readonly PREVIEW_HEIGHT = 360;\n\n // View references\n @ViewChild('timelineRuler') timelineRuler?: ElementRef<HTMLElement>;\n @ViewChild('notifications') notificationsComponent?: NotificationsComponent;\n @ViewChild('previewCanvas') previewCanvas?: ElementRef<HTMLCanvasElement>;\n\n // Timeline state\n readonly state = signal<TimelineState>({\n tracks: [\n { id: '1', name: 'Track 1', order: 0, items: [] },\n { id: '2', name: 'Track 2', order: 1, items: [] }\n ],\n playheadPosition: 0,\n zoomLevel: 50, // pixels per second\n totalDuration: 120000, // 120 seconds in milliseconds\n selectedItemId: null\n });\n\n // Computed values\n readonly pixel**********econd = computed(() => {\n return this.state().zoomLevel / 1000;\n });\n\n readonly timelineWidth = computed(() => {\n const state = this.state();\n // Calculate the maximum end time across all tracks\n let maxEndTime = state.totalDuration;\n\n for (const track of state.tracks) {\n for (const item of track.items) {\n const itemEndTime = item.startTime + item.duration;\n if (itemEndTime > maxEndTime) {\n maxEndTime = itemEndTime;\n }\n }\n }\n\n return maxEndTime * this.pixelsPerMillisecond();\n });\n\n readonly timelineLineHeight = computed(() => {\n const state = this.state();\n return state.tracks.length * 60 + 32;\n });\n\n readonly playheadPosition = computed(() => {\n return this.state().playheadPosition * this.pixelsPerMillisecond();\n });\n\n readonly playh************ition = computed(() => {\n return this.playheadPosition() + this.TRACK_HEADER_WIDTH;\n });\n\n // Computed: whether a media item is currently selected\n readonly hasSelectedItem = computed(() => {\n return this.state().selectedItemId !== null;\n });\n\n // Dragging state\n private draggedItem: MediaItem | null = null;\n private draggedItemOriginalTrackId: string | null = null;\n private dragOffsetTime: number = 0; // Offset in milliseconds from item start to cursor position\n private isDraggingPlayhead = false;\n private isDraggingFromRuler = false;\n private resizingItem: { item: MediaItem; edge: 'left' | 'right' } | null = null;\n private mouseDownPosition: { x: number; y: number } | null = null; // Track mouse down position for click detection\n\n // Video preview state\n readonly isPlaying = signal<boolean>(false);\n\n // Duration editor state\n readonly showDurationEditor = signal<boolean>(false);\n private editedDuration: number = 120; // Duration in seconds\n\n // Media library state\n readonly showMediaLibrary = signal<boolean>(false);\n private mediaLibraryTargetTrackId: string | null = null;\n\n // Clipboard state for copy/paste functionality\n private readonly clipboardItem = signal<MediaItem | null>(null);\n private readonly clipb************ackId = signal<string | null>(null);\n\n // Computed: whether a media item is in clipboard\n readonly hasClipboardItem = computed(() => {\n return this.clipboardItem() !== null;\n });\n\n // Render loop ID for cleanup\n private renderLoopId: number | null = null;\n\n constructor(\n private dragDropService: TimelineDragDropService,\n public playbackService: PlaybackService,\n private storageService: TimelineStorageService\n ) {\n // Load saved state from LocalStorage on initialization\n const savedState = this.storageService.loadState();\n if (savedState) {\n this.state.set(savedState);\n }\n\n // Effect to sync playhead position from PlaybackService during playback\n effect(() => {\n if (this.playbackService.isPlaying()) {\n const position = this.playbackService.playheadPosition();\n this.state.update(s => ({\n ...s,\n playheadPosition: position\n }));\n }\n });\n\n // Effect to auto-save timeline state to LocalStorage on any change\n effect(() => {\n const currentState = this.state();\n this.storageService.saveState(currentState);\n });\n }\n\n ngAfterViewInit(): void {\n // Initialize canvas for preview rendering\n if (this.previewCanvas) {\n this.playbackService.setCanvas(this.previewCanvas.nativeElement);\n }\n\n // Start continuous render loop for preview (renders current frame even when paused)\n this.startRenderLoop();\n }\n\n ngOnDestroy(): void {\n // Clean up render loop\n if (this.renderLoopId !== null) {\n cancelAnimationFrame(this.renderLoopId);\n this.renderLoopId = null;\n }\n\n // Stop playback\n this.playbackService.stop();\n }\n\n /**\n * Continuous render loop for preview canvas.\n * Keeps rendering even when paused so seeking updates the preview.\n */\n private startRenderLoop(): void {\n const render = () => {\n // Only render if we have active media and are not playing\n // (PlaybackService handles rendering during playback)\n if (!this.playbackService.isPlaying()) {\n this.playbackService.renderCurrentFrame();\n }\n this.renderLoopId = requestAnimationFrame(render);\n };\n this.renderLoopId = requestAnimationFrame(render);\n }\n\n // Track management\n addTrack(): void {\n const currentState = this.state();\n const newTrack: Track = {\n id: `track-${Date.now()}`,\n name: `Track ${currentState.tracks.length + 1}`,\n order: currentState.tracks.length,\n items: []\n };\n\n this.state.update(s => ({\n ...s,\n tracks: [...s.tracks, newTrack]\n }));\n }\n\n removeTrack(trackId: string): void {\n const currentState = this.state();\n if (currentState.tracks.length <= 1) {\n return; // Keep at least one track\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.filter(t => t.id !== trackId)\n }));\n }\n\n // Zoom controls\n zoomIn(): void {\n this.state.update(s => ({\n ...s,\n zoomLevel: Math.min(s.zoomLevel + this.ZOOM_STEP, this.MAX_ZOOM)\n }));\n }\n\n zoomOut(): void {\n this.state.update(s => ({\n ...s,\n zoomLevel: Math.max(s.zoomLevel - this.ZOOM_STEP, this.MIN_ZOOM)\n }));\n }\n\n // Utility method to extract coordinates from mouse or touch events\n private getEventCoordinates(event: MouseEvent | TouchEvent): { clientX: number; clientY: number } {\n if (event instanceof MouseEvent) {\n return { clientX: event.clientX, clientY: event.clientY };\n } else {\n const touch = event.touches[0] || event.changedTouches[0];\n return { clientX: touch.clientX, clientY: touch.clientY };\n }\n }\n\n // Playhead controls\n onRulerPointerDown(event: MouseEvent | TouchEvent): void {\n event.preventDefault();\n this.isDraggingFromRuler = true;\n\n // Immediately update position on pointer down\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n const coords = this.getEventCoordinates(event);\n // Calculate position within the ruler element\n // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n const x = coords.clientX - rect.left;\n const newPosition = x / this.pixelsPerMillisecond();\n const currentState = this.state();\n const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n\n this.state.update(s => ({\n ...s,\n playheadPosition: clampedPosition\n }));\n\n // Sync position to playback service for seeking\n this.playbackService.seek(currentState.tracks, clampedPosition);\n }\n\n onPlayheadPointerDown(event: MouseEvent | TouchEvent): void {\n event.preventDefault();\n event.stopPropagation();\n this.isDraggingPlayhead = true;\n }\n\n\n // Media item drag and drop\n onMediaItemPointerDown(event: MouseEvent | TouchEvent, item: MediaItem, track: Track): void {\n const target = event.target as HTMLElement;\n\n // Check if clicking/touching on resize handle\n if (target.classList.contains('resize-handle')) {\n this.resizingItem = {\n item,\n edge: target.classList.contains('resize-handle-left') ? 'left' : 'right'\n };\n event.preventDefault();\n return;\n }\n\n const coords = this.getEventCoordinates(event);\n this.mouseDownPosition = { x: coords.clientX, y: coords.clientY };\n\n const mediaItemElement = event.currentTarget as HTMLElement;\n const rect = mediaItemElement.getBoundingClientRect();\n const clickX = coords.clientX - rect.left;\n\n // Convert pixel offset to time offset\n this.dragOffsetTime = clickX / this.pixelsPerMillisecond();\n\n this.draggedItem = item;\n this.draggedItemOriginalTrackId = track.id;\n event.preventDefault();\n }\n\n onTrackPointerDown(event: MouseEvent | TouchEvent): void {\n // Deselect when clicking/touching track background (not on media item)\n const target = event.target as HTMLElement;\n if (target.classList.contains('track')) {\n this.deselectMediaItem();\n }\n }\n\n onTrackPointerMove(event: MouseEvent | TouchEvent, track: Track): void {\n if (this.resizingItem) {\n this.handleResize(event, track);\n return;\n }\n event.preventDefault();\n event.stopPropagation();\n\n if (!this.draggedItem) return;\n\n const coords = this.getEventCoordinates(event);\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n const x = coords.clientX - rect.left;\n const requestedStartTime = Math.max(0, x / this.pixelsPerMillisecond() - this.dragOffsetTime);\n\n this.state.update(s => {\n const updatedTracks = s.tracks.map(t => {\n if (t.id === track.id) {\n // Get all items except the dragged one for collision detection\n const otherItems = t.items.filter(i => i.id !== this.draggedItem!.id);\n\n // Fix for issue #81: Find snap targets (playhead and items on all tracks)\n const snapTargets = this.dragDropService.findSna
[2025-12-07T21:06:21.939Z] [INFO] pTargets(\n this.draggedItem!.id,\n s.tracks,\n s.playheadPosition\n );\n\n // Calculate valid position and duration considering collisions, gap fitting, and snapping\n const validPosition = this.dragDropService.getValidDragPosition(\n this.draggedItem!,\n requestedStartTime,\n otherItems,\n s.totalDuration,\n snapTargets\n );\n\n // Check if item already exists in this track\n const itemExists = t.items.some(i => i.id === this.draggedItem!.id);\n\n if (itemExists) {\n // Update position and duration in current track\n return {\n ...t,\n items: t.items.map(i =>\n i.id === this.draggedItem!.id\n ? {\n ...i,\n startTime: validPosition.startTime,\n duration: validPosition.duration,\n trackId: track.id\n }\n : i\n )\n };\n } else {\n // Add to new track with adjusted position and duration\n return {\n ...t,\n items: [\n ...otherItems,\n {\n ...this.draggedItem!,\n startTime: validPosition.startTime,\n duration: validPosition.duration,\n trackId: track.id\n }\n ]\n };\n }\n } else if (t.id === this.draggedItemOriginalTrackId && t.id !== track.id) {\n // Remove from original track only if moving to different track\n return {\n ...t,\n items: t.items.filter(i => i.id !== this.draggedItem!.id)\n };\n }\n return t;\n });\n\n // Update the original track ID to current track for smooth dragging within same track\n this.draggedItemOriginalTrackId = track.id;\n\n return { ...s, tracks: updatedTracks };\n });\n }\n\n private handleResize(event: MouseEvent | TouchEvent, track: Track): void {\n if (!this.resizingItem) return;\n\n const coords = this.getEventCoordinates(event);\n const target = event.currentTarget as HTMLElement;\n const rect = target.getBoundingClientRect();\n // Fix for issue #83: getBoundingClientRect() returns viewport-relative coordinates,\n // and coords.clientX is also viewport-relative, so we don't need to add scrollLeft\n const x = coords.clientX - rect.left;\n const timeAtCursor = x / this.pixelsPerMillisecond();\n\n this.state.update(s => {\n // Fix for issue #87: Find snap targets for resize operations\n const snapTargets = this.dragDropService.findSnapTargets(\n this.resizingItem!.item.id,\n s.tracks,\n s.playheadPosition\n );\n\n const updatedTracks = s.tracks.map(t => {\n if (t.id === track.id) {\n // Get resize bounds considering adjacent items\n const bounds = this.dragDropService.getResizeBounds(\n this.resizingItem!.item,\n t.items,\n this.resizingItem!.edge,\n s.totalDuration\n );\n\n return {\n ...t,\n items: t.items.map(i => {\n if (i.id === this.resizingItem!.item.id) {\n if (this.resizingItem!.edge === 'left') {\n // Fix for issue #89: Handle mediaStartTime when resizing from left\n // Apply snapping to left edge (start time)\n let newStartTime = Math.max(\n bounds.minTime,\n Math.min(timeAtCursor, bounds.maxTime)\n );\n\n // Apply snapping if within snap distance\n let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n for (const target of snapTargets) {\n const distance = Math.abs(newStartTime - target);\n if (distance < minDistance) {\n minDistance = distance;\n // Only snap if within bounds\n if (target >= bounds.minTime && target <= bounds.maxTime) {\n newStartTime = target;\n }\n }\n }\n\n // Calculate how much the timeline position is changing\n const deltaTime = newStartTime - i.startTime;\n const newDuration = i.duration - deltaTime;\n\n // Update media start time (trimming from source media)\n const curre***********tTime = i.mediaStartTime || 0;\n const newMediaStartTime = curre***********tTime + deltaTime;\n\n // Check if we're trying to extend beyond the start of source media\n if (newMediaStartTime < 0) {\n // Can only extend left by curre***********tTime amount\n const maxExtension = currentMediaStartTime;\n const finalStartTime = i.startTime - maxExtension;\n const finalDuration = i.duration + maxExtension;\n\n // Ensure we don't exceed maxDuration\n if (i.maxDuration && finalDuration > i.maxDuration) {\n return {\n ...i,\n startTime: finalStartTime + (finalDuration - i.maxDuration),\n duration: i.maxDuration,\n mediaStartTime: 0\n };\n }\n\n return {\n ...i,\n startTime: finalStartTime,\n duration: finalDuration,\n mediaStartTime: 0\n };\n }\n\n // Ensure media end doesn't exceed maxDuration\n if (i.maxDuration && newMediaStartTime + newDuration > i.maxDuration) {\n const maxAllowedDuration = i.maxDuration - newMediaStartTime;\n return {\n ...i,\n startTime: i.startTime + (i.duration - maxAllowedDuration),\n duration: maxAllowedDuration,\n mediaStartTime: newMediaStartTime\n };\n }\n\n return {\n ...i,\n startTime: newStartTime,\n duration: newDuration,\n mediaStartTime: newMediaStartTime\n };\n } else {\n // Fix for issue #87: Apply snapping to right edge (end time)\n let newEndTime = Math.max(\n bounds.minTime,\n Math.min(timeAtCursor, bounds.maxTime)\n );\n\n // Apply snapping if within snap distance\n let minDistance = this.dragDropService.SNAP_DISTANCE_MS;\n for (const target of snapTargets) {\n const distance = Math.abs(newEndTime - target);\n if (distance < minDistance) {\n minDistance = distance;\n // Only snap if within bounds\n if (target >= bounds.minTime && target <= bounds.maxTime) {\n newEndTime = target;\n }\n }\n }\n\n const newDuration = newEndTime - i.startTime;\n\n // Limit duration by maxDuration if specified\n const limitedDuration = i.maxDuration\n ? Math.min(newDuration, i.maxDuration)\n : newDuration;\n\n return { ...i, duration: limitedDuration };\n }\n }\n return i;\n })\n };\n }\n return t;\n });\n\n return { ...s, tracks: updatedTracks };\n });\n }\n\n onPointerUp(event: MouseEvent | TouchEvent): void {\n // Detect if this was a click/tap (not a drag) on a media item\n if (this.draggedItem && this.mouseDownPosition) {\n const coords = this.getEventCoordinates(event);\n const dx = coords.clientX - this.mouseDownPosition.x;\n const dy = coords.clientY - this.mouseDownPosition.y;\n const distance = Math.sqrt(dx * dx + dy * dy);\n\n // If pointer moved less than 5 pixels, consider it a click/tap\n if (distance < 5) {\n this.selectMediaItem(this.draggedItem.id);\n }\n }\n\n this.draggedItem = null;\n this.draggedItemOriginalTrackId = null;\n this.dragOffsetTime = 0;\n this.isDraggingPlayhead = false;\n this.isDraggingFromRuler = false;\n this.resizingItem = null;\n this.mouseDownPosition = null;\n }\n\n onDocumentPointerMove(event: MouseEvent | TouchEvent): void {\n if (this.isDraggingPlayhead || this.isDraggingFromRuler) {\n // Fix for issue #50: Use ViewChild reference to ensure we use the exact same element as onRulerPointerDown\n if (!this.timelineRuler) {\n return;\n }\n\n const coords = this.getEventCoordinates(event);\n const rulerElement = this.timelineRuler.nativeElement;\n // Use the same calculation as onRulerPointerDown\n // getBoundingClientRect() already accounts for scroll, so we don't add scrollLeft\n const rect = rulerElement.getBoundingClientRect();\n const x = coords.clientX - rect.left;\n const newPosition = x / this.pixelsPerMillisecond();\n const currentState = this.state();\n const clampedPosition = Math.max(0, Math.min(newPosition, currentState.totalDuration));\n\n this.state.update(s => ({\n ...s,\n playheadPosition: clampedPosition\n }));\n\n // Sync position to playback service for seeking (but don't call too frequently during drag)\n this.playbackService.seek(currentState.tracks, clampedPosition);\n }\n\n // Fix for issue #96: Handle media item dragging and resizing at document level for touch events\n // This allows dragging between tracks on mobile devices\n if (event instanceof TouchEvent) {\n if (this.draggedItem) {\n // Find which track the touch is currently over\n const targetTrack = this.findTrackAtCoordinates(this.getEventCoordinates(event));\n if (targetTrack) {\n // Reuse existing drag logic\n this.onTrackPointerMove(event, targetTrack);\n }\n } else if (this.resizingItem) {\n // Find the track that contains the resizing item\n const targetTrack = this.findTrackContainingItem(this.resizingItem.item.id);\n if (targetTrack) {\n // Reuse existing resize logic\n this.handleResize(event, targetTrack);\n }\n }\n }\n }\n\n // Helper method to find which track is at the given Y coordinate\n private findTrackAtCoordinates(coords: { clientX: number; clientY: number }): Track | null {\n const trackElements = document.querySelectorAll('.track');\n for (const trackElement of Array.from(trackElements)) {\n const rect = trackElement.getBoundingClientRect();\n if (coords.clientY >= rect.top && coords.clientY <= rect.bottom) {\n const trackIndex = Array.from(trackElements).indexOf(trackElement);\n const tracks = this.state().tracks;\n if (trackIndex >= 0 && trackIndex < tracks.length) {\n return tracks[trackIndex];\n }\n }\n }\n return null;\n }\n\n // Helper method to find the track containing a specific item\n private findTrackContainingItem(itemId: string): Track | null {\n const currentState = this.state();\n for (const track of currentState.tracks) {\n if (track.items.some(item => item.id === itemId)) {\n return track;\n }\n }\n return null;\n }\n\n // Helper methods\n getItemStyle(item: MediaItem) {\n return {\n left: `${item.startTime * this.pixelsPerMillisecond()}px`,\n width: `${item.duration * this.pixelsPerMillisecond()}px`\n };\n }\n\n getMediaTypeClass(type: MediaType): string {\n return `media-${type}`;\n }\n\n formatTime(milliseconds: number): string {\n const seconds = Math.floor(milliseconds / 1000);\n const minutes = Math.floor(seconds / 60);\n const remainingSeconds = seconds % 60;\n const cs = Math.floor((milliseconds % 1000) / 10);\n return `${minutes}:${remainingSeconds.toString().padStart(2, '0')}.${cs.toString().padStart(2, '0')}`;\n }\n\n /**\n * Calculate appropriate time interval for markers based on zoom level\n * to prevent marker labels from overlapping\n */\n private getMarkerInterval(): number {\n // Minimum spacing between markers in pixels to prevent overlap\n // Enough space for \"0:00.000\" text (about 50-60px)\n const MIN_M***********NG_PX = 60;\n\n // Calculate how much time represents MIN_M***********NG_PX at current zoom\n const pixelsPerMs = this.pixelsPerMillisecond();\n const minTimeSpacing = MIN_M***********NG_PX / pixelsPerMs;\n\n // Define possible intervals (in ms): 100ms, 250ms, 500ms, 1s, 2s, 5s, 10s, 30s, 60s\n const intervals = [100, 250, 500, 1000, 2000, 5000, 10000, 30000, 60000];\n\n // Find the smallest interval that's larger than or equal to minTimeSpacing\n for (const interval of intervals) {\n if (interval >= minTimeSpacing) {\n return interval;\n }\n }\n\n // If even 60s is too small, use larger intervals\n return Math.ceil(minTimeSpacing / 60000) * 60000;\n }\n\n getTimeMarkers(): { position: number; label: string }[] {\n const markers: { position: number; label: string }[] = [];\n const stepMs = this.getMarkerInterval(); // Dynamic interval based on zoom level\n\n // Fix for issue #85: Do not show the last time mark at totalDuration\n // to prevent container expansion from the text label\n for (let time = 0; time < this.state().totalDuration; time += stepMs) {\n markers.push({\n position: time * this.pixelsPerMillisecond(),\n label: this.formatTime(time)\n });\n }\n\n return markers;\n }\n\n // Add placeholder media item\n addMediaItem(type: MediaType, trackId: string): void {\n const currentState = this.state();\n const track = currentState.tracks.find(t => t.id === trackId);\n\n if (!track) return;\n\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n const newItemDuration = type === MediaType.IMAGE ? 5000 : 3000;\n\n // Determine the start time for the new item using the service\n const startTime = this.dragDropService.calculateNewItemStartTime(\n playheadTime,\n track.items,\n this.SNAP_PROXIMITY_MS\n );\n\n // Fix for issue #48: Ensure new item doesn't exceed totalDuration\n const maxAllowedDuration = totalDuration - startTime;\n const finalDuration = Math.min(newItemDuration, maxAllowedDuration);\n\n // Fix for issue #64: Verify that the new item doesn't overlap with any existing items\n const testItem: MediaItem = {\n id: 'temp',\n type,\n startTime,\n duration: finalDuration,\n trackId,\n name: '',\n isPlaceholder: true\n };\n\n // Validate and adjust position if needed\n const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n\n // Recalculate duration limit if position was adjusted\n const adjus****************ation = totalDuration - validatedStartTime;\n const adjustedDuration = Math.min(newItemDuration, adjustedMaxAllowedDuration);\n\n // Create the final non-overlapping item\n const newItem: MediaItem = {\n id: `item-${Date.now()}`,\n type,\n startTime: validatedStartTime,\n duration: adjustedDuration,\n trackId,\n name: `${type} placeholder`,\n isPlaceholder: true\n };\n\n // Set maxDuration for audio and video placeholders\n if (type === MediaType.VIDEO) {\n newItem.maxDuration = Math.min(10000, adjustedMaxAllowedDuration); // 10 seconds default for video\n } else if (type === MediaType.AUDIO) {\n newItem.maxDuration = Math.min(15000, adjustedMaxAllowedDuration); // 15 seconds default for audio\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === trackId\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n }\n\n removeMediaItem(itemId: string, trackId: string): void {\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === trackId\n ? { ...t, items: t.items.filter(i => i.id !== itemId) }\n : t\n ),\n // Deselect if removing selected item\n selectedItemId: s.selectedItemId === itemId ? null : s.selectedItemId\n }));\n }\n\n // Media selection\n selectMediaItem(itemId: string): void {\n this.state.update(s => ({\n ...s,\n selectedItemId: itemId\n }));\n }\n\n deselectMediaItem(): void {\n this.state.update(s => ({\n ...s,\n selectedItemId: null\n }));\n }\n\n isItemSelected(itemId: string): boolean {\n return this.state().selectedItemId === itemId;\n }\n\n readonly MediaType = MediaType;\n\n /**\n * Create a new project by clearing the timeline and LocalStorage\n */\n newProject(): void {\n // Stop playback if playing\n if (this.playbackService.isPlaying()) {\n this.playbackService.stop();\n this.isPlaying.set(false);\n }\n\n // Reset timeline state to initial values\n this.state.set({\n tracks: [\n { id: '1', name: 'Track 1', order: 0, items: [] },\n { id: '2', name: 'Track 2', order: 1, items: [] }\n ],\n playheadPosition: 0,\n zoomLevel: 50,\n totalDuration: 120000,\n selectedItemId: null\n });\n\n // Clear LocalStorage\n this.storageService.clearState();\n\n // Show notification\n this.notificationsComponent?.showNotification(\n 'New project created. Timeline cleared.',\n 'success'\n );\n }\n\n // Video preview controls\n togglePlayback(): void {\n const currentState = this.state();\n\n if (this.playbackService.isPlaying()) {\n this.playbackService.pause();\n this.isPlaying.set(false);\n } else {\n // Sync playhead position to PlaybackService before starting\n this.playbackService.setPlayheadPosition(currentState.playheadPosition);\n this.playbackService.play(currentState.tracks, currentState.totalDuration);\n this.isPlaying.set(true);\n }\n }\n\n skipBackward(): void {\n const currentState = this.state();\n const newPosition = Math.max(0, currentState.playheadPosition - 5000);\n\n this.state.update(s => ({\n ...s,\n playheadPosition: newPosition\n }));\n\n // Sync position and update media\n this.playbackService.seek(currentState.tracks, newPosition);\n }\n\n skipForward(): void {\n const currentState = this.state();\n const newPosition = Math.min(currentState.totalDuration, currentState.playheadPosition + 5000);\n\n this.state.update(s => ({\n ...s,\n playheadPosition: newPosition\n }));\n\n // Sync position and update media\n this.playbackService.seek(currentState.tracks, newPosition);\n }\n\n // Duration editor methods\n openDurationEditor(): void {\n this.editedDuration = this.state().totalDuration / 1000;\n this.showDurationEditor.set(true);\n }\n\n closeDurationEditor(): void {\n this.showDurationEditor.set(false);\n }\n\n onDurationInputChange(event: Event): void {\n const input = event.target as HTMLInputElement;\n const value = parseFloat(input.value);\n if (!isNaN(value) && value > 0) {\n this.editedDuration = value;\n }\n }\n\n saveDuration(): void {\n const newDurationMs = Math.max(1000, this.editedDuration * 1000); // At least 1 second\n this.state.update(s => ({\n ...s,\n totalDuration: newDurationMs,\n // Ensure playhead doesn't exceed new duration\n playheadPosition: Math.min(s.playheadPosition, newDurationMs)\n }));\n this.closeDurationEditor();\n }\n\n // Media library methods\n openMediaLibrary(trackId: string): void {\n this.mediaLibraryTargetTrackId = trackId;\n this.showMediaLibrary.set(true);\n }\n\n closeMediaLibrary(): void {\n this.showMediaLibrary.set(false);\n this.mediaLibraryTargetTrackId = null;\n }\n\n onMediaSelected(media: MediaLibraryItem): void {\n if (!this.mediaLibraryTargetTrackId) return;\n\n const currentState = this.state();\n const track = currentState.tracks.find(t => t.id === this.mediaLibraryTargetTrackId);\n\n if (!track) return;\n\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n\n // Determine the start time for the new item using the service\n const startTime = this.dragDropService.calculateNewItemStartTime(\n playheadTime,\n track.items,\n this.SNAP_PROXIMITY_MS\n );\n\n // Ensure item doesn't exceed totalDuration\n const maxAllowedDuration = totalDuration - startTime;\n const finalDuration = Math.min(media.duration, maxAllowedDuration);\n\n // Verify that the new item doesn't overlap with any existing items\n const testItem: MediaItem = {\n id: 'temp',\n type: media.type,\n startTime,\n duration: finalDuration,\n trackId: this.mediaLibraryTargetTrackId,\n name: '',\n isPlaceholder: false\n };\n\n // Validate and adjust position if needed\n const validatedStartTime = this.dragDropService.validateItemPosition(testItem, track.items);\n\n // Recalculate duration limit if position was adjusted\n const adjus****************ation = totalDuration - validatedStartTime;\n const adjustedDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n\n // Create the final non-overlapping item\n const newItem: MediaItem = {\n id: `item-${Date.now()}`,\n type: media.type,\n startTime: validatedStartTime,\n duration: adjustedDuration,\n trackId: this.mediaLibraryTargetTrackId,\n name: media.name,\n url: media.url, // Pass URL from media library for playback\n isPlaceholder: false\n };\n\n // Set maxDuration for audio and video\n if (media.type === MediaType.VIDEO) {\n newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n } else if (media.type === MediaType.AUDIO) {\n newItem.maxDuration = Math.min(media.duration, adjustedMaxAllowedDuration);\n }\n\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === this.mediaLibraryTargetTrackId\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n\n // Close the media library after selection\n this.closeMediaLibrary();\n }\n\n /**\n * Trim (split) the selected media item at the playhead position.\n * Creates two separate items from the original media.\n */\n trimSelectedMedia(): void {\n const currentState = this.state();\n const selectedItemId = currentState.selectedItemId;\n\n if (!selectedItemId) {\n return;\n }\n\n // Find the selected item and its track\n let selectedItem: MediaItem | null = null;\n let selectedTrack: Track | null = null;\n\n for (const track of currentState.tracks) {\n const item = track.items.find(i => i.id === selectedItemId);\n if (item) {\n selectedItem = item;\n selectedTrack = track;\n break;\n }\n }\n\n if (!selectedItem || !selectedTrack) {\n return;\n }\n\n const playheadTime = currentState.playheadPosition;\n const itemStart = selectedItem.startTime;\n const itemEnd = itemStart + selectedItem.duration;\n\n // Check if playhead is within the selected media item\n if (playheadTime <= itemStart || playheadTime >= itemEnd) {\n // Playhead is not within the selected media - show notification\n this.notificationsComponent?.showNotification(\n 'Position the playhead within the selected media to trim it.',\n 'warning'\n );\n return;\n }\n\n // Ensure both parts will have at least MIN_ITEM_DURATION\n const firstPartDuration = playheadTime - itemStart;\n const secondPartDuration = itemEnd - playheadTime;\n\n if (firstPartDuration < this.MIN_ITEM_DURATION || secondPartDuration < this.MIN_ITEM_DURATION) {\n this.notificationsComponent?.showNotification(\n 'Cannot trim: resulting parts would be too short.',\n 'warning'\n );\n return;\n }\n\n // Calculate mediaStartTime adjustments\n const origi************tTime = selectedItem.mediaStartTime || 0;\n const secon**************tTime = origi************tTime + firstPartDuration;\n\n // Create two new items from the original\n const firstPart: MediaItem = {\n ...selectedItem,\n id: `item-${Date.now()}-1`,\n duration: firstPartDuration\n // mediaStartTime stays the same for first part\n };\n\n const secondPart: MediaItem = {\n ...selectedItem,\n id: `item-${Date.now()}-2`,\n startTime: playheadTime,\n duration: secondPartDuration,\n mediaStartTime: secondPartMediaStartTime\n };\n\n // Update the state: remove original, add two new parts\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t => {\n if (t.id === selectedTrack!.id) {\n return {\n ...t,\n items: [\n ...t.items.filter(i => i.id !== selectedItemId),\n firstPart,\n secondPart\n ]\n };\n }\n return t;\n }),\n // Deselect after trimming\n selectedItemId: null\n }));\n\n this.notificationsComponent?.showNotification(\n 'Media trimmed successfully.',\n 'success'\n );\n }\n\n /**\n * Copy the selected media item to the clipboard.\n * Stores a copy of the item and the track it was copied from.\n */\n copySelectedMedia(): void {\n const currentState = this.state();\n const selectedItemId = currentState.selectedItemId;\n\n if (!selectedItemId) {\n return;\n }\n\n // Find the selected item and its track\n let selectedItem: MediaItem | null = null;\n let selectedTrackId: string | null = null;\n\n for (const track of currentState.tracks) {\n const item = track.items.find(i => i.id === selectedItemId);\n if (item) {\n selectedItem = item;\n selectedTrackId = track.id;\n break;\n }\n }\n\n if (!selectedItem || !selectedTrackId) {\n return;\n }\n\n // Store a copy of the item in clipboard\n this.clipboardItem.set({ ...selectedItem });\n this.clipboardSourceTrackId.set(selectedTrackId);\n\n this.notificationsComponent?.showNotification(\n 'Media copied to clipboard.',\n 'success'\n );\n }\n\n /**\n * Paste the clipboard media item at the playhead position.\n * Pastes on the same track where the item was copied from.\n * If there's no space at playhead position, finds the next available slot.\n */\n pasteMedia(): void {\n const copiedItem = this.clipboardItem();\n const sourceTrackId = this.clipboardSourceTrackId();\n\n if (!copiedItem || !sourceTrackId) {\n return;\n }\n\n const currentState = this.state();\n const playheadTime = currentState.playheadPosition;\n const totalDuration = currentState.totalDuration;\n\n // Find the source track\n let targetTrack = currentState.tracks.find(t => t.id === sourceTrackId);\n\n // If source track no longer exists, use the first track\n if (!targetTrack) {\n targetTrack = currentState.tracks[0];\n if (!targetTrack) {\n this.notificationsComponent?.showNotification(\n 'No tracks available to paste media.',\n 'error'\n );\n return;\n }\n }\n\n const itemDuration = copiedItem.duration;\n\n // Try to find a valid position starting from playhead\n const pastePosition = this.findPastePosition(\n playheadTime,\n itemDuration,\n targetTrack.items,\n totalDuration\n );\n\n if (pastePosition === null) {\n this.notificationsComponent?.showNotification(\n 'No space available to paste media on this track.',\n 'warning'\n );\n return;\n }\n\n // Create a new item with a new ID\n const newItem: MediaItem = {\n ...copiedItem,\n id: `item-${Date.now()}`,\n startTime: pastePosition,\n trackId: targetTrack.id\n };\n\n // Add the new item to the track\n this.state.update(s => ({\n ...s,\n tracks: s.tracks.map(t =>\n t.id === targetTrack!.id\n ? { ...t, items: [...t.items, newItem] }\n : t\n )\n }));\n\n this.notificationsComponent?.showNotification(\n 'Media pasted successfully.',\n 'success'\n );\n }\n\n /**\n * Find a valid position to paste media item.\n * First tries at the playhead position, then finds the next available gap.\n */\n private findPastePosition(\n preferredPosition: number,\n duration: number,\n existingItems: MediaItem[],\n totalDuration: number\n ): number | null {\n // Check if we can fit at the preferred position (playhead)\n if (this.canFitAtPosition(preferredPosition, duration, existingItems, totalDuration)) {\n return preferredPosition;\n }\n\n // Sort existing items by start time\n const sortedItems = [...existingItems].sort((a, b) => a.startTime - b.startTime);\n\n // Find all gaps on the track and try to place the item\n const gaps = this.dragDropService.findAllGaps(sortedItems);\n\n // First, try to find a gap that starts at or after the playhead\n for (const gap of gaps) {\n // Calculate actual gap size (considering totalDuration for infinite gaps)\n const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n const gapSize = effectiveGapEnd - gap.gapStart;\n\n if (gap.gapStart >= preferredPosition && gapSize >= duration) {\n return gap.gapStart;\n }\n }\n\n // If no gap after playhead, try any gap that can fit the item\n for (const gap of gaps) {\n // Calculate actual gap size (considering totalDuration for infinite gaps)\n const effectiveGapEnd = gap.gapEnd === Infinity ? totalDuration : gap.gapEnd;\n const gapSize = effectiveGapEnd - gap.gapStart;\n\n if (gapSize >= duration) {\n return gap.gapStart;\n }\n }\n\n // No suitable position found\n return null;\n }\n\n /**\n * Check if an item can fit at a specific position without overlapping.\n */\n private canFitAtPosition(\n position: number,\n duration: number,\n existingItems: MediaItem[],\n totalDuration: number\n ): boolean {\n // Check bounds\n if (position < 0 || position + duration > totalDuration) {\n return false;\n }\n\n // Check for overlaps with existing items\n const endPosition = position + duration;\n for (const item of existingItems) {\n const itemEnd = item.startTime + item.duration;\n // Check if there's an overlap\n if (position < itemEnd && endPosition > item.startTime) {\n return false;\n }\n }\n\n return true;\n }\n}\n","structuredPatch":[{"oldStart":154,"oldLines":6,"newStart":154,"newLines":12,"lines":[" "," // Start continuous render loop for preview (renders current frame even when paused)"," this.startRenderLoop();","+","+ // Synchronize media and render initial frame if state was loaded from LocalStorage","+ const currentState = this.state();","+ if (currentState.tracks.length > 0) {","+ this.playbackService.seek(currentState.tracks, currentState.playheadPosition);","+ }"," }"," "," ngOnDestroy(): void {"]}],"userModified":false,"replaceAll":false}}
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"text": "Excellent! Now let me verify this fix is correct by checking the seek method behavior:"
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"content": " 397β†’ seek(tracks: Track[], position: number): void {\n 398β†’ this._playheadPosition.set(position);\n 399β†’\n 400β†’ // Update all active media positions\n 401β†’ for (const activeMedia of this.activeMediaMap.values()) {\n 402β†’ const { item, element } = activeMedia;\n 403β†’ const itemEnd = item.startTime + item.duration;\n 404β†’\n 405β†’ // Check if media should still be active at new position\n 406β†’ if (position < item.startTime || position >= itemEnd) {\n 407β†’ // Media should no longer be active\n 408β†’ this.stopMedia(activeMedia);\n 409β†’ this.activeMediaMap.delete(item.id);\n 410β†’ } else if (element instanceof HTMLVideoElement || element instanceof HTMLAudioElement) {\n 411β†’ // Seek to correct position in media\n 412β†’ const mediaStartTime = item.mediaStartTime || 0;\n 413β†’ const offsetInItem = position - item.startTime;\n 414β†’ element.currentTime = (mediaStartTime + offsetInItem) / 1000;\n 415β†’ }\n 416β†’ }\n 417β†’\n 418β†’ // Synchronize to add any new media that should be active\n 419β†’ this.synchronizeMedia(tracks, position);\n 420β†’\n 421β†’ // Render current frame\n 422β†’ this.renderToCanvas();\n 423β†’ }\n 424β†’\n 425β†’ /**\n 426β†’ * Force render the current state to canvas (useful when paused)\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"
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"content": "title:\tΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΊΠ°Π΄Ρ€Π° сразу послС Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ страницы\nstate:\tOPEN\nauthor:\tkonard\nlabels:\t\nassignees:\t\nreviewers:\t\nprojects:\t\nmilestone:\t\nnumber:\t121\nurl:\thttps://github.com/andchir/video-timeline/pull/121\nadditions:\t19\ndeletions:\t1\nauto-merge:\tdisabled\n--\n## πŸ“‹ ОписаниС / Description\n\n**RU:** Π˜ΡΠΏΡ€Π°Π²Π»Π΅Π½Π° ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° с отсутствиСм прСдпросмотра ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ страницы с сохранСнными Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° Π² LocalStorage.\n\n**EN:** Fixed the issue where the first frame preview was not displayed when loading the page with saved project data in LocalStorage.\n\n## πŸ› ΠŸΡ€ΠΎΠ±Π»Π΅ΠΌΠ° / Problem\n\nΠŸΡ€ΠΈ ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½ΠΈΠΈ страницы Π±Ρ€Π°ΡƒΠ·Π΅Ρ€Π° с сохранСнными Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° Π² LocalStorage, прСдпросмотр ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° Π½Π΅ отобраТался Π½Π° canvas. Π­Ρ‚ΠΎ происходило, ΠΏΠΎΡ‚ΠΎΠΌΡƒ Ρ‡Ρ‚ΠΎ `activeMediaMap` Π² `PlaybackService` оставался пустым послС ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ.\n\nWhen refreshing the browser page with saved project data in LocalStorage, the first frame preview was not displayed on the canvas. This happened because `activeMediaMap` in `PlaybackService` remained empty after initialization.\n\n## πŸ” Анализ ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρ‹ / Root Cause Analysis\n\n### ΠŸΠΎΡ€ΡΠ΄ΠΎΠΊ ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ / Initialization Order:\n1. **Constructor** (`timeline.component.ts:120-129`): ЗагруТаСтся состояниС ΠΈΠ· LocalStorage\n2. **ngAfterViewInit** (`timeline.component.ts:149-157`): Π˜Π½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·ΠΈΡ€ΡƒΠ΅Ρ‚ΡΡ canvas ΠΈ запускаСтся Ρ†ΠΈΠΊΠ» Ρ€Π΅Π½Π΄Π΅Ρ€ΠΈΠ½Π³Π°\n3. **Render loop** (`timeline.component.ts:174-184`): Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `renderCurrentFrame()` β†’ `renderToCanvas()`\n4. **ΠŸΡ€ΠΎΠ±Π»Π΅ΠΌΠ°**: `renderToCanvas()` отрисовываСт Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΌΠ΅Π΄ΠΈΠ° ΠΈΠ· `activeMediaMap`, Π½ΠΎ эта ΠΊΠ°Ρ€Ρ‚Π° **пуста** ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ страницы!\n\n### The initialization order:\n1. **Constructor** (`timeline.component.ts:120-129`): State is loaded from LocalStorage\n2. **ngAfterViewInit** (`timeline.component.ts:149-157`): Canvas is initialized and render loop starts\n3. **Render loop** (`timeline.component.ts:174-184`): Calls `renderCurrentFrame()` β†’ `renderToCanvas()`\n4. **Problem**: `renderToCanvas()` only renders media from `activeMediaMap`, but this map is **empty** on page load!\n\n`activeMediaMap` заполняСтся Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΏΡ€ΠΈ Π²Ρ‹Π·ΠΎΠ²Π΅ `synchronizeMedia()`, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ происходит:\n- Π’ΠΎ врСмя воспроизвСдСния (Π² Ρ†ΠΈΠΊΠ»Π΅ play)\n- ΠŸΡ€ΠΈ ΠΏΠ΅Ρ€Π΅ΠΌΠΎΡ‚ΠΊΠ΅ (ΠΊΠ»ΠΈΠΊ ΠΏΠΎ ruler)\n- Но **НЕ** ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ состояния ΠΈΠ· LocalStorage\n\n`activeMediaMap` is only populated by calling `synchronizeMedia()`, which happens:\n- During playback (in the play loop)\n- When seeking (user clicks ruler)\n- But **NOT** when loading state from LocalStorage\n\n## βœ… РСшСниС / Solution\n\nΠ”ΠΎΠ±Π°Π²Π»Π΅Π½ Π²Ρ‹Π·ΠΎΠ² `playbackService.seek()` Π² `ngAfterViewInit()` послС ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ canvas. ΠœΠ΅Ρ‚ΠΎΠ΄ `seek()`:\n1. Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `synchronizeMedia(tracks, position)` β€” Π·Π°Π³Ρ€ΡƒΠΆΠ°Π΅Ρ‚ ΠΌΠ΅Π΄ΠΈΠ°-элСмСнты\n2. Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `renderToCanvas()` β€” отрисовываСт ΠΊΠ°Π΄Ρ€ Π½Π° canvas\n\nAdded a call to `playbackService.seek()` in `ngAfterViewInit()` after canvas initialization. The `seek()` method:\n1. Calls `synchronizeMedia(tracks, position)` β€” loads media elements\n2. Calls `renderToCanvas()` β€” renders the frame to canvas\n\n### ИзмСнСния / Changes:\n**Π€Π°ΠΉΠ» / File**: `video-timeline/src/app/components/timeline/timeline.component.ts:158-162`\n\n```typescript\n// Synchronize media and render initial frame if state was loaded from LocalStorage\nconst currentState = this.state();\nif (currentState.tracks.length > 0) {\n this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n}\n```\n\n## πŸ§ͺ ВСстированиС / Testing\n\nДля ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ исправлСния / To verify the fix:\n1. ΠžΡ‚ΠΊΡ€ΠΎΠΉΡ‚Π΅ ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΈ Π΄ΠΎΠ±Π°Π²ΡŒΡ‚Π΅ ΠΌΠ΅Π΄ΠΈΠ° Π½Π° Ρ‚Π°ΠΉΠΌΠ»Π°ΠΉΠ½ / Open the app and add media to the timeline\n2. БостояниС автоматичСски сохранится Π² LocalStorage / State will auto-save to LocalStorage\n3. ΠžΠ±Π½ΠΎΠ²ΠΈΡ‚Π΅ страницу (F5 ΠΈΠ»ΠΈ Ctrl+R) / Refresh the page (F5 or Ctrl+R)\n4. βœ… ΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° Π΄ΠΎΠ»ΠΆΠ΅Π½ ΠΎΡ‚ΠΎΠ±Ρ€Π°Π·ΠΈΡ‚ΡŒΡΡ сразу / βœ… First frame preview should display immediately\n\n## πŸ“ Бсылки / References\n\nFixes #120\n\nπŸ€– Generated with [Claude Code](https://claude.com/claude-code)",
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"stdout": "title:\tΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΊΠ°Π΄Ρ€Π° сразу послС Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ страницы\nstate:\tOPEN\nauthor:\tkonard\nlabels:\t\nassignees:\t\nreviewers:\t\nprojects:\t\nmilestone:\t\nnumber:\t121\nurl:\thttps://github.com/andchir/video-timeline/pull/121\nadditions:\t19\ndeletions:\t1\nauto-merge:\tdisabled\n--\n## πŸ“‹ ОписаниС / Description\n\n**RU:** Π˜ΡΠΏΡ€Π°Π²Π»Π΅Π½Π° ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° с отсутствиСм прСдпросмотра ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ страницы с сохранСнными Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° Π² LocalStorage.\n\n**EN:** Fixed the issue where the first frame preview was not displayed when loading the page with saved project data in LocalStorage.\n\n## πŸ› ΠŸΡ€ΠΎΠ±Π»Π΅ΠΌΠ° / Problem\n\nΠŸΡ€ΠΈ ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½ΠΈΠΈ страницы Π±Ρ€Π°ΡƒΠ·Π΅Ρ€Π° с сохранСнными Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° Π² LocalStorage, прСдпросмотр ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° Π½Π΅ отобраТался Π½Π° canvas. Π­Ρ‚ΠΎ происходило, ΠΏΠΎΡ‚ΠΎΠΌΡƒ Ρ‡Ρ‚ΠΎ `activeMediaMap` Π² `PlaybackService` оставался пустым послС ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ.\n\nWhen refreshing the browser page with saved project data in LocalStorage, the first frame preview was not displayed on the canvas. This happened because `activeMediaMap` in `PlaybackService` remained empty after initialization.\n\n## πŸ” Анализ ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρ‹ / Root Cause Analysis\n\n### ΠŸΠΎΡ€ΡΠ΄ΠΎΠΊ ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ / Initialization Order:\n1. **Constructor** (`timeline.component.ts:120-129`): ЗагруТаСтся состояниС ΠΈΠ· LocalStorage\n2. **ngAfterViewInit** (`timeline.component.ts:149-157`): Π˜Π½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·ΠΈΡ€ΡƒΠ΅Ρ‚ΡΡ canvas ΠΈ запускаСтся Ρ†ΠΈΠΊΠ» Ρ€Π΅Π½Π΄Π΅Ρ€ΠΈΠ½Π³Π°\n3. **Render loop** (`timeline.component.ts:174-184`): Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `renderCurrentFrame()` β†’ `renderToCanvas()`\n4. **ΠŸΡ€ΠΎΠ±Π»Π΅ΠΌΠ°**: `renderToCanvas()` отрисовываСт Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΌΠ΅Π΄ΠΈΠ° ΠΈΠ· `activeMediaMap`, Π½ΠΎ эта ΠΊΠ°Ρ€Ρ‚Π° **пуста** ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ страницы!\n\n### The initialization order:\n1. **Constructor** (`timeline.component.ts:120-129`): State is loaded from LocalStorage\n2. **ngAfterViewInit** (`timeline.component.ts:149-157`): Canvas is initialized and render loop starts\n3. **Render loop** (`timeline.component.ts:174-184`): Calls `renderCurrentFrame()` β†’ `renderToCanvas()`\n4. **Problem**: `renderToCanvas()` only renders media from `activeMediaMap`, but this map is **empty** on page load!\n\n`activeMediaMap` заполняСтся Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΏΡ€ΠΈ Π²Ρ‹Π·ΠΎΠ²Π΅ `synchronizeMedia()`, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ происходит:\n- Π’ΠΎ врСмя воспроизвСдСния (Π² Ρ†ΠΈΠΊΠ»Π΅ play)\n- ΠŸΡ€ΠΈ ΠΏΠ΅Ρ€Π΅ΠΌΠΎΡ‚ΠΊΠ΅ (ΠΊΠ»ΠΈΠΊ ΠΏΠΎ ruler)\n- Но **НЕ** ΠΏΡ€ΠΈ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠ΅ состояния ΠΈΠ· LocalStorage\n\n`activeMediaMap` is only populated by calling `synchronizeMedia()`, which happens:\n- During playback (in the play loop)\n- When seeking (user clicks ruler)\n- But **NOT** when loading state from LocalStorage\n\n## βœ… РСшСниС / Solution\n\nΠ”ΠΎΠ±Π°Π²Π»Π΅Π½ Π²Ρ‹Π·ΠΎΠ² `playbackService.seek()` Π² `ngAfterViewInit()` послС ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ canvas. ΠœΠ΅Ρ‚ΠΎΠ΄ `seek()`:\n1. Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `synchronizeMedia(tracks, position)` β€” Π·Π°Π³Ρ€ΡƒΠΆΠ°Π΅Ρ‚ ΠΌΠ΅Π΄ΠΈΠ°-элСмСнты\n2. Π’Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ `renderToCanvas()` β€” отрисовываСт ΠΊΠ°Π΄Ρ€ Π½Π° canvas\n\nAdded a call to `playbackService.seek()` in `ngAfterViewInit()` after canvas initialization. The `seek()` method:\n1. Calls `synchronizeMedia(tracks, position)` β€” loads media elements\n2. Calls `renderToCanvas()` β€” renders the frame to canvas\n\n### ИзмСнСния / Changes:\n**Π€Π°ΠΉΠ» / File**: `video-timeline/src/app/components/timeline/timeline.component.ts:158-162`\n\n```typescript\n// Synchronize media and render initial frame if state was loaded from LocalStorage\nconst currentState = this.state();\nif (currentState.tracks.length > 0) {\n this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n}\n```\n\n## πŸ§ͺ ВСстированиС / Testing\n\nДля ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ исправлСния / To verify the fix:\n1. ΠžΡ‚ΠΊΡ€ΠΎΠΉΡ‚Π΅ ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΈ Π΄ΠΎΠ±Π°Π²ΡŒΡ‚Π΅ ΠΌΠ΅Π΄ΠΈΠ° Π½Π° Ρ‚Π°ΠΉΠΌΠ»Π°ΠΉΠ½ / Open the app and add media to the timeline\n2. БостояниС автоматичСски сохранится Π² LocalStorage / State will auto-save to LocalStorage\n3. ΠžΠ±Π½ΠΎΠ²ΠΈΡ‚Π΅ страницу (F5 ΠΈΠ»ΠΈ Ctrl+R) / Refresh the page (F5 or Ctrl+R)\n4. βœ… ΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ ΠΊΠ°Π΄Ρ€Π° Π΄ΠΎΠ»ΠΆΠ΅Π½ ΠΎΡ‚ΠΎΠ±Ρ€Π°Π·ΠΈΡ‚ΡŒΡΡ сразу / βœ… First frame preview should display immediately\n\n## πŸ“ Бсылки / References\n\nFixes #120\n\nπŸ€– Generated with [Claude Code](https://claude.com/claude-code)",
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"text": "Excellent! The task is complete. Let me provide a summary:\n\n## βœ… Task Complete\n\nI've successfully solved issue #120 and the pull request is now ready for review!\n\n### πŸ” What was the problem?\n\nWhen refreshing the browser page with saved project data in LocalStorage, the first frame preview was not being displayed. The root cause was that the `activeMediaMap` in `PlaybackService` remained empty on page initialization because `synchronizeMedia()` was never called during the LocalStorage restore process.\n\n### βœ… Solution implemented\n\nAdded a call to `playbackService.seek()` in `ngAfterViewInit()` (timeline.component.ts:158-162) after the canvas is initialized. This ensures that:\n1. Media elements are synchronized with the loaded state via `synchronizeMedia()`\n2. The first frame is rendered to the canvas via `renderToCanvas()`\n\n### πŸ“ Key changes\n\n**File**: `video-timeline/src/app/components/timeline/timeline.component.ts`\n\n```typescript\n// Synchronize media and render initial frame if state was loaded from LocalStorage\nconst currentState = this.state();\nif (currentState.tracks.length > 0) {\n this.playbackService.seek(currentState.tracks, currentState.playheadPosition);\n}\n```\n\n### πŸ”— Links\n\n- **Pull Request**: https://github.com/andchir/video-timeline/pull/121\n- **Issue**: https://github.com/andchir/video-timeline/issues/120\n- **Branch**: issue-120-b7c3b4d32d3c\n\nThe PR is now marked as ready for review with a comprehensive bilingual (Russian/English) description explaining the problem, root cause analysis, solution, and testing instructions."
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[2025-12-07T21:08:52.519Z] [INFO] πŸ’° Anthropic official cost captured: $0.858338
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[2025-12-07T21:08:52.791Z] [INFO] Context window: 200 000 tokens
[2025-12-07T21:08:52.791Z] [INFO] Max output: 64 000 tokens
[2025-12-07T21:08:52.792Z] [INFO] Input modalities: text, image
[2025-12-07T21:08:52.792Z] [INFO] Output modalities: text
[2025-12-07T21:08:52.792Z] [INFO] Knowledge cutoff: 2025-07-31
[2025-12-07T21:08:52.792Z] [INFO] Released: 2025-09-29
[2025-12-07T21:08:52.792Z] [INFO] Capabilities: Attachments, Reasoning, Temperature, Tool calls
[2025-12-07T21:08:52.792Z] [INFO] Open weights: No
[2025-12-07T21:08:52.792Z] [INFO]
[2025-12-07T21:08:52.793Z] [INFO] Usage:
[2025-12-07T21:08:52.793Z] [INFO] Input tokens: 218
[2025-12-07T21:08:52.793Z] [INFO] Cache creation tokens: 68 909
[2025-12-07T21:08:52.793Z] [INFO] Cache read tokens: 2 147 590
[2025-12-07T21:08:52.793Z] [INFO] Output tokens: 6 948
[2025-12-07T21:08:52.793Z] [INFO]
[2025-12-07T21:08:52.793Z] [INFO] Cost Calculation (USD):
[2025-12-07T21:08:52.794Z] [INFO] Input: 218 tokens Γ— $3/M = $0.000654
[2025-12-07T21:08:52.794Z] [INFO] Cache write: 68 909 tokens Γ— $3.75/M = $0.258409
[2025-12-07T21:08:52.794Z] [INFO] Cache read: 2 147 590 tokens Γ— $0.3/M = $0.644277
[2025-12-07T21:08:52.794Z] [INFO] Output: 6 948 tokens Γ— $15/M = $0.104220
[2025-12-07T21:08:52.794Z] [INFO] ─────────────────────────────────
[2025-12-07T21:08:52.795Z] [INFO] Total: $1.007560
[2025-12-07T21:08:52.795Z] [INFO]
πŸ’° Cost estimation:
[2025-12-07T21:08:52.795Z] [INFO] Public pricing estimate: $1.007560 USD
[2025-12-07T21:08:52.795Z] [INFO] Calculated by Anthropic: $0.858338 USD
[2025-12-07T21:08:52.795Z] [INFO] Difference: $-0.149222 (-14.81%)
[2025-12-07T21:08:52.795Z] [INFO] Total tokens: 76 075
[2025-12-07T21:08:52.796Z] [INFO]
πŸ” Checking for uncommitted changes...
[2025-12-07T21:08:52.806Z] [INFO] βœ… No uncommitted changes found
[2025-12-07T21:08:52.807Z] [INFO] πŸ”„ Cleanup: Reverting CLAUDE.md commit
[2025-12-07T21:08:52.807Z] [INFO] Using saved commit hash: a8ce66a...
[2025-12-07T21:08:52.807Z] [INFO] Checking if CLAUDE.md was modified since initial commit...
[2025-12-07T21:08:52.816Z] [INFO] No modifications detected, using standard git revert...
[2025-12-07T21:08:52.827Z] [INFO] πŸ“¦ Committed: CLAUDE.md revert
[2025-12-07T21:08:53.580Z] [INFO] πŸ“€ Pushed: CLAUDE.md revert to GitHub
[2025-12-07T21:08:53.581Z] [INFO]
=== Session Summary ===
[2025-12-07T21:08:53.581Z] [INFO] βœ… Session ID: d72d4e5a-5602-4ad4-bda1-87c785c0c8db
[2025-12-07T21:08:53.582Z] [INFO] βœ… Complete log file: /home/hive/d72d4e5a-5602-4ad4-bda1-87c785c0c8db.log
[2025-12-07T21:08:53.583Z] [INFO]
πŸ’‘ To continue this session in Claude Code interactive mode:
[2025-12-07T21:08:53.583Z] [INFO] (cd /tmp/gh-issue-solver-1765141430780 && claude --resume d72d4e5a-5602-4ad4-bda1-87c785c0c8db)
[2025-12-07T21:08:53.583Z] [INFO]
[2025-12-07T21:08:53.584Z] [INFO]
πŸ” Searching for created pull requests or comments...
[2025-12-07T21:08:53.868Z] [INFO]
πŸ” Checking for pull requests from branch issue-120-b7c3b4d32d3c...
[2025-12-07T21:08:54.218Z] [INFO] βœ… Found pull request #121: "ΠŸΡ€Π΅Π΄ΠΏΡ€ΠΎΡΠΌΠΎΡ‚Ρ€ ΠΊΠ°Π΄Ρ€Π° сразу послС Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ страницы"
[2025-12-07T21:08:54.550Z] [INFO] βœ… PR body already contains issue reference
[2025-12-07T21:08:54.550Z] [INFO] βœ… PR is already ready for review
[2025-12-07T21:08:54.550Z] [INFO]
πŸ“Ž Uploading solution draft log to Pull Request...
[2025-12-07T21:08:54.606Z] [INFO] πŸ’° Calculated cost: $1.007560
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