#!/usr/bin/env node
/**
 * Starts a cloudflared quick tunnel and prints a QR code for the tunnel URL.
 * Usage: node scripts/tunnel.mjs [port]
 * Default port: 4321 (Astro dev server default)
 */

import { spawn } from "child_process";
import qrcode from "qrcode-terminal";

const port = process.argv[2] ?? "4321";
const localUrl = `http://localhost:${port}`;

console.log(`\n🚇 Starting cloudflared tunnel → ${localUrl}\n`);

const cf = spawn("cloudflared", ["tunnel", "--url", localUrl], {
  stdio: ["inherit", "pipe", "pipe"],
  // Needed on Windows so cloudflared is found via PATH
  shell: process.platform === "win32",
});

let urlFound = false;

/**
 * Inspect a single line of cloudflared output and, on first match,
 * extract the trycloudflare.com URL and render a QR code.
 */
function processLine(line) {
  // Always forward cloudflared output so the user can see it
  process.stderr.write(line + "\n");

  if (urlFound) return;

  const match = line.match(/https:\/\/[a-zA-Z0-9-]+\.trycloudflare\.com/);
  if (match) {
    urlFound = true;
    const tunnelUrl = match[0];

    console.log("\n✅ Tunnel URL: " + tunnelUrl);
    console.log("\n📱 Scan this QR code:\n");
    qrcode.generate(tunnelUrl, { small: true });
    console.log("\nPress Ctrl+C to stop the tunnel.\n");
  }
}

/**
 * Buffer a readable stream and emit complete lines.
 */
function watchStream(stream) {
  let buf = "";
  stream.on("data", (chunk) => {
    buf += chunk.toString();
    const lines = buf.split("\n");
    buf = lines.pop(); // keep the last (possibly incomplete) line
    for (const line of lines) processLine(line);
  });
  stream.on("end", () => {
    if (buf) processLine(buf);
  });
}

watchStream(cf.stdout);
watchStream(cf.stderr);

cf.on("error", (err) => {
  if (err.code === "ENOENT") {
    console.error(
      "\n❌ cloudflared not found.\n" +
        "   Install it from https://developers.cloudflare.com/cloudflare-one/connections/connect-networks/downloads/\n"
    );
  } else {
    console.error("\n❌ cloudflared error:", err.message);
  }
  process.exit(1);
});

cf.on("close", (code) => {
  process.exit(code ?? 0);
});

// Forward Ctrl+C to the child process
process.on("SIGINT", () => {
  cf.kill("SIGINT");
});

vite: {
    server: {
  allowedHosts: [".trycloudflare.com", "localhost"],
  }
}