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#!/usr/bin/env bash
set -euo pipefail
# Track temp files for cleanup
tmpfiles=()
cleanup() {
for f in "${tmpfiles[@]}"; do
[ -f "$f" ] && rm -f "$f"
done
}
trap 'cleanup; exit 130' INT
trap 'cleanup' EXIT
mkdir -p channels
file="$1"
start_id="${2:-}"
skip=true
while read -r id; do
# Skip logic
if [ -n "$start_id" ] && $skip; then
if [ "$id" = "$start_id" ]; then
skip=false
else
continue
fi
fi
playlist_id="UU${id:2}"
outfile="channels/${id}.json"
tmpfile="${outfile}.tmp.$$"
if [ ! -f "$outfile" ]; then
echo "Fetching $id..."
tmpfiles+=("$tmpfile")
if yt-dlp \
-j \
--flat-playlist \
--lazy-playlist \
--extractor-arg "youtubetab:approximate_date" \
"https://www.youtube.com/playlist?list=$playlist_id" \
> "$tmpfile"; then
mv -f "$tmpfile" "$outfile"
# remove from tracked list since it's now promoted
tmpfiles=("${tmpfiles[@]/$tmpfile}")
else
echo "Failed to fetch $id" >&2
rm -f "$tmpfile"
tmpfiles=("${tmpfiles[@]/$tmpfile}")
fi
else
echo "Skipping $id (already exists)" >&2
fi
done < "$file"
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