#!/bin/bash
# gen-vgm-playlist.sh — regenerate vgm.m3u8 from all tracks tagged with
# genre "Game Soundtrack" in the beets library.
#
# Navidrome picks this up as a regular playlist. Safe to run manually anytime.

set -u

PLAYLIST_DIR=${MUSIC_DATA_DIR:-/data/music}/playlists
OUT="${PLAYLIST_DIR}/vgm.m3u8"
LOG_DIR=${ALEMBIC_CONFIG_DIR:-/config}/logs
LOG="${LOG_DIR}/vgm-$(date +%Y%m%d).log"

mkdir -p "$LOG_DIR" "$PLAYLIST_DIR"

log() { echo "[$(date -Iseconds)] $*" | tee -a "$LOG"; }

log "=== Regenerating vgm.m3u8 ==="

SORTED=$(beet ls -f '$path' 'genres:Game' 2>>"$LOG" | sort -u)
COUNT=$(echo -n "$SORTED" | grep -c '^' || true)

if [[ "$COUNT" -gt 0 ]]; then
  {
    echo "#EXTM3U"
    echo "$SORTED"
  } > "$OUT"
  log "vgm.m3u8 updated with $COUNT tracks"
else
  log "WARNING: no tracks found — vgm.m3u8 not updated"
fi

log "=== Finished ==="