Scripts, scenes, bridges, bots and more
This commit is contained in:
Jakub Zych
185
scripts/playlist.sh
Executable file
185
scripts/playlist.sh
Executable file
@@ -0,0 +1,185 @@
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#!/usr/bin/env bash
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# scripts/playlist.sh — playlist sync + control API for the music daemon.
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#
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# Usage:
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# ./playlist.sh → sync (default; index audio in ../playlist/)
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# ./playlist.sh sync → explicit sync
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# ./playlist.sh skip → next track
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# ./playlist.sh prev → previous track
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# ./playlist.sh pause → pause playback
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# ./playlist.sh resume → resume playback
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# ./playlist.sh status → show last queued command
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# ./playlist.sh help → this help
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#
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# Control commands (skip/prev/pause/resume) write a tiny `cmd.js` that the
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# Music Daemon polls every 250ms. The daemon picks up the new command,
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# acts on it, and broadcasts the resulting state via OBS WebSocket so the
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# loading overlay updates live.
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set -euo pipefail
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DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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OBS_DIR="$(cd "$DIR/.." && pwd)"
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JSON="$OBS_DIR/loading/playlist.json"
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JS="$OBS_DIR/loading/playlist.js"
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CMD_JS="$OBS_DIR/loading/cmd.js"
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# Audio roots — scanned recursively, in order. Add more here as the library grows.
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# Missing roots are skipped with a warning, not an error.
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ROOTS=(
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"$OBS_DIR/playlist"
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"$HOME/HDD/Music/Electronic/NCS Directory"
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)
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usage() {
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sed -n 's/^# \?//p' "$0" | head -20
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}
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# ─────────────── sync ───────────────
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cmd_sync() {
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if ! command -v ffprobe >/dev/null 2>&1; then
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echo " ✗ ffprobe not found (install ffmpeg: sudo pacman -S ffmpeg)" >&2
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exit 1
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fi
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echo "── Indexing audio roots ──"
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for r in "${ROOTS[@]}"; do
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if [[ -d "$r" ]]; then echo " + $r"; else echo " ! $r (missing — skipped)"; fi
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done
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local TMP="$JSON.tmp.$$"
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python3 - "${ROOTS[@]}" "$TMP" <<'PY'
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import json, subprocess, sys, os, datetime, re, urllib.parse
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roots = sys.argv[1:-1]
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out = sys.argv[-1]
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exts = ('.m4a', '.mp3', '.opus', '.ogg', '.flac', '.webm', '.aac', '.wav')
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def ffprobe_meta(path):
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try:
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r = subprocess.run(
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['ffprobe', '-v', 'error',
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'-show_entries', 'format=duration:format_tags=title,artist',
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'-of', 'json', path],
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capture_output=True, text=True, timeout=10,
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)
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if r.returncode != 0: return {}
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fmt = (json.loads(r.stdout) or {}).get('format', {}) or {}
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tags = {k.lower(): v for k, v in (fmt.get('tags') or {}).items()}
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return {
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'title': tags.get('title'),
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'artist': tags.get('artist'),
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'durationSec': float(fmt['duration']) if fmt.get('duration') else None,
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}
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except Exception:
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return {}
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def clean_title(t):
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if not t: return t
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# PRIMARY rule: keep only what's before the first vertical bar
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# (fullwidth ｜ U+FF5C or ASCII |). Everything after is genre/label noise.
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t = re.sub(r'\s*[｜|].*$', '', t)
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# Strip trailing YouTube-ID brackets, e.g. " [-XxZTgMWKV0]"
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t = re.sub(r'\s*\[[A-Za-z0-9_-]{11}\]\s*$', '', t)
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# Strip "[NCS Release]" / "(NCS10 Release)" suffix variants
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t = re.sub(r'\s*[\[(](?:NCS\d*|No Copyright Sounds)(?:\s+Release)?[\])]\s*$', '', t, flags=re.I)
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return t.strip()
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INTERMEDIATE = re.compile(r'\.(?:f\d+|temp|part)$', re.I)
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def is_audio_file(name):
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base, ext = os.path.splitext(name)
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if ext.lower() not in exts: return False
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if INTERMEDIATE.search(base): return False
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return True
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# Absolute file:// URI — works across roots since the daemon HTML and the audio
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# may live on different filesystems. CEF in OBS browser source loads these
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# directly thanks to the Flatpak's filesystems=host permission.
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def file_uri(path):
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return 'file://' + urllib.parse.quote(os.path.abspath(path), safe='/')
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tracks = []
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for root in roots:
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if not os.path.isdir(root):
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print(f' ! skipping missing root: {root}', file=sys.stderr)
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continue
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for dirpath, _, files in os.walk(root):
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for fname in sorted(files):
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if not is_audio_file(fname): continue
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path = os.path.join(dirpath, fname)
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meta = ffprobe_meta(path)
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display = clean_title(os.path.splitext(fname)[0])
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tracks.append({
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'title': display,
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'file': file_uri(path),
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'durationSec': int(meta['durationSec']) if meta.get('durationSec') else None,
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})
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doc = {
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'syncedAt': datetime.datetime.now(datetime.timezone.utc).strftime('%Y-%m-%dT%H:%M:%SZ'),
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'sourceDirs': roots,
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'trackCount': len(tracks),
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'tracks': tracks,
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}
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with open(out, 'w') as f:
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json.dump(doc, f, indent=2, ensure_ascii=False)
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PY
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if ! python3 -m json.tool "$TMP" >/dev/null 2>&1; then
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echo " ✗ manifest invalid, leaving $TMP" >&2
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exit 1
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fi
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mv -f "$TMP" "$JSON"
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{ printf 'window.__PLAYLIST = '; cat "$JSON"; printf ';\n'; } > "$JS.tmp.$$"
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mv -f "$JS.tmp.$$" "$JS"
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local count
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count=$(python3 -c "import json; print(json.load(open('$JSON'))['trackCount'])")
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echo
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echo " ✓ wrote $JSON ($count tracks)"
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echo " ✓ wrote $JS"
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echo " → refresh the Music Daemon browser source in OBS to reload the queue."
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}
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# ─────────────── control commands ───────────────
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# Writes a unique-per-call cmd.js that the daemon polls. The id is
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# nanosecond-precise so the daemon's "did this id change?" check always passes
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# even on rapid-fire commands.
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send_cmd() {
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local type="$1"
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local id ts
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id=$(date +%s%N)
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ts=$(date +%s)
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printf 'window.__CMD = {"id":%s,"type":"%s","ts":%s};\n' "$id" "$type" "$ts" > "$CMD_JS"
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echo " → ${type} (id=$id)"
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}
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cmd_skip() { send_cmd skip; }
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cmd_prev() { send_cmd prev; }
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cmd_pause() { send_cmd pause; }
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cmd_resume() { send_cmd resume; }
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cmd_status() {
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if [[ -f "$CMD_JS" ]]; then
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echo "── last queued command ──"
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cat "$CMD_JS"
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else
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echo " (no command file yet — daemon hasn't been signalled this session)"
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fi
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}
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# ─────────────── dispatch ───────────────
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case "${1:-sync}" in
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sync) cmd_sync ;;
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skip|next) cmd_skip ;;
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prev|back) cmd_prev ;;
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pause) cmd_pause ;;
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resume|play) cmd_resume ;;
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status) cmd_status ;;
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help|-h|--help) usage ;;
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*)
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echo " ✗ unknown command: $1" >&2
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usage
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exit 1
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;;
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esac
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