zieglar · November 20, 2019 17:08
diff --git a/README.md b/README.md
diff --git a/delete-tweets.sh b/delete-tweets.sh
 #!/bin/bash
 # author: [email protected]

 set -e

 KEEP_DAYS=90
 LAST_TWEET_FILE="$HOME/.delete-tweets"
 TWEET_UTIL="tweet.sh"

 function delete_tweet {
 	# empty buffer before calling tweet.sh
 	echo -n '' | "$TWEET_UTIL" delete $1 2>&1 || true
 }

 function undo_retweet {
 	echo -n '' | "$TWEET_UTIL" unretweet $1 2>&1 || true
 }

 function raise_error {
 	echo "${1:-Error occurred.}" >&2
 	exit ${2:-1}
 }

 function main {
 	echo -n "Preparing... "
 	[ -f "$1" ] || raise_error "Missing archived tweets file: tweet.js."
 	[ -f "$TWEET_UTIL" ] || raise_error "tweet.sh is required." 2
 	local nickname="$("$TWEET_UTIL" whoami)"
 	[ "$nickname" == "null" ] && raise_error "tweet.sh is not configured correctly." 3

 	local date_cmd=date
 	if [ "$(uname)" == "Darwin" ]; then
 		which gdate > /dev/null || raise_error "gdate, the GNU date utility is required." 4
 		date_cmd=gdate
 	fi
 	echo Done.

 	local timestamp=$($date_cmd -d "$($date_cmd +%Y-%m-%d) -$(($KEEP_DAYS-1)) days" +%s)
 	echo "This utility will delete tweets for $nickname before $($date_cmd -d @$timestamp +%D)"

 	echo -n "Loading tweets from $1... "
 	local items="`(echo '[{'; tail -n +2 "$1") | jq -r 'map([.created_at, .id_str, (.full_text | startswith("RT @") | tostring)] | join(",")) | .[]'`"
 	local count=$(echo "$items" | wc -l | tr -d ' ')
 	echo "$count tweets."

 	local started=1
 	local last_deleted
 	if [ -f "$LAST_TWEET_FILE" ]; then
 		last_deleted=$(cat "$LAST_TWEET_FILE")
 		echo -n "Resuming... "
 		started=0
 	fi

 	local index=0
 	echo "$items" | while IFS=, read -r tweet_date tweet_id retweeted; do
 		index=$(($index + 1))

 		# resuming from last working entry
 		if [ $started -eq 0 ]; then
 			if [ "$tweet_id" == "$last_deleted" ]; then
 				echo Found.
 				started=1
 			fi
 			continue
 		fi

 		# print prograss and current entry
 		echo -n "[$(echo "scale = 2; $index * 100 / $count" | bc)%] "
 		[ "$retweeted" == "true" ] && echo -n "Unretweeting" || echo -n "Deleting"
 		echo -n " tweet $tweet_id posted on $($date_cmd -d "$tweet_date" +%D)... "

 		# compare dates
 		if [ $($date_cmd -d "$tweet_date" +%s) -ge $timestamp ]; then
 			printf "Kept.\e[0E\e[K\r"
 			continue
 		fi

 		# execute
 		RESULT="$(([ "$retweeted" == "true" ] && undo_retweet $tweet_id || delete_tweet $tweet_id)  | jq -r '.errors | first | .message // empty')"
 		[ -z "$RESULT" ] && printf "OK.\e[0E\e[K\r" || echo "ERROR: $RESULT"

 		# save working entry
 		echo $tweet_id > "$LAST_TWEET_FILE"

 	done
 }

 main "$@"
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