#!/bin/bash
#
# Get files for playlist using git-annex and mpd
#

# Parameters
BASENAME="`basename $0`"
PLAYLIST="$1"
DEST="$2"
MEDIA="/var/cache/media/noise"
PLAYLISTS="$MEDIA/playlists"

if [ -z "$PLAYLIST" ]; then
  echo "Usage: $BASENAME <playlist> [dest]"

  if [ -d "$PLAYLISTS" ]; then
    echo ""
    echo "Available playlists: "
    ls $PLAYLISTS
  fi

  exit 1
elif [ ! -f "$PLAYLISTS/$PLAYLIST.m3u" ]; then
  echo "No such playlist $PLAYLISTS/$PLAYLIST.m3u"
  exit 1
fi

if [ "$BASENAME" == "playlist-drop" ]; then
  command="drop"
elif [ "$BASENAME" == "playlist-copy" ]; then
  if [ -z "$DEST" ]; then
    echo "No destination specified"
    exit 1
  fi

  DEST="--to $DEST"
  command="copy"
else
  command="get"
fi

echo "Getting files from $PLAYLISTS/$PLAYLIST.m3u..."

cat $PLAYLISTS/$PLAYLIST.m3u | while read file; do
  dir="$(dirname "$file")"
  base="$(basename "$file")"
  mkdir -p "$MEDIA/$dir"
  ( cd "$MEDIA/$dir" && git annex $command "$base" $DEST )
done