#!/bin/bash
#
# Get playlist files from an URL.
#

# Parameters
BASENAME="`basename $0`"
PLAYLIST="$1"

# Check
if [ -z "$PLAYLIST" ]; then
  echo "usage: $BASENAME <playlist-url>"
  exit 1
elif echo "$PLAYLIST" | grep -q -v '^http'; then
  echo "$BASENAME: unsupported URL"
  exit 1
fi

# Get playlist base from where we can find all the files
# We apply dirname twice because MPD stores playlists in a subfolder
PLAYLIST_BASE="$(dirname $(dirname $PLAYLIST))"

# Download all playlist files in the current folder
# We use sed to replace new lines by the null character so xargs can detect each file correctly
#curl -s $PLAYLIST | sed -e "s|^|\"$PLAYLIST_BASE/|" -e 's|$|"|' -e 's|\n|\x0|' | xargs wget -c

# Download the playlist
wget -c $PLAYLIST

# Download playlist and all it's files preseving the folder structure
cat `basename $PLAYLIST` | while read file; do
  dirname="`dirname "$file"`"

  mkdir -p "$dirname"
  wget -c "$PLAYLIST_BASE/$file" -O "$file"
done