#!/bin/bash
XSLT_TRACKLIST="`dirname \"$0\"`/tracklist.xsl"
check() {
    if ! type ${1} >/dev/null 2>&1; then
        echo "missing ${1}${2}"
        exit 2
    fi
}

check rtmpdump
check xsltproc
check ffmpeg
check vorbiscomment ": see vorbis-tools package"

getplid() {
    wget -q -O - "$1" | sed -n -e 'b start; :quit; q; :start; s/.*plid=\([0-9]*\).*/\1/p; t quit' 
}

getfriendid() {
    wget -q -O - "$1" | sed -n -e 'b start; :quit; q; :start; s/.*friendId=\([0-9]*\).*/\1/p; t quit' 
}


eachSong() {
    for song in `wget -O - -q "http://musicservices.myspace.com/Modules/MusicServices/Services/MusicPlayerService.ashx?action=getPlaylist&friendId=${2}&playlistId=${1}" | xsltproc "${XSLT_TRACKLIST}" -`; do
        songId=`echo $song | cut -d \; -f 1`
        albumId=`echo $song | cut -d \; -f 2`
        releaseId=`echo $song | cut -d \; -f 3`
        title=`echo $song | cut -d \; -f 4`
        artist=`echo $song | cut -d \; -f 5`
        if [ "xx${songId}" == "xx" ] || [ "xx${albumId}" == "xx" ] || [ "xx${releaseId}" == "xx" ] || [ "xx${title}" == "xx" ]; then
            echo "skip: ${song}" >&2
            continue
        fi
        echo "load: ${song}" >&2
        if [ "xx${albumId}" == "xx0" ]; then
        rtmpUrl=`wget -O - -q \
                "http://musicservices.myspace.com/Modules/MusicServices/Services/MusicPlayerService.ashx?releaseId=${releaseId}&sample=0&el=&action=getSong&songId=${songId}&ptype=4" \
                | sed -n -e 's/.*<rtmp>rtmp\(.*\)<\/rtmp>.*/rtmpe\1/p'`

        else
            rtmpUrl=`wget -O - -q \
                "http://musicservices.myspace.com/Modules/MusicServices/Services/MusicPlayerService.ashx?albumId=${albumId}&sample=0&el=&action=getSong&songId=${songId}&ptype=4" \
                | sed -n -e 's/.*<rtmp>rtmp\(.*\)<\/rtmp>.*/rtmpe\1/p'`
        fi
        if [ "xx${rtmpUrl}" == "xx" ]; then
            echo "could not find rtmpe URL" >&2
        else
            filename=${title}.ogg
            download "${rtmpUrl}" "${filename}"
            vorbiscomment -w -t "ARTIST=${artist}" -t "TITLE=${title}" "${filename}"
        fi
    done
    echo done
}

download() {
    echo ${1} ${2}
    if [ -f "${2}" ]; then
        echo "Skip ${2} - file exist"
        return 
    else
        echo "load ${2}"
        rtmpdump -o - -r "$1" \
            | ffmpeg -f flv -i - -acodec libvorbis -ab 192k -ar 44100 -vn "${2}"
    fi
}

if [ $# -eq 1 ]; then
    plid=`getplid "$1"`
    friendId=`getfriendid "$1"`
    if [ "xx${plid}" == "xx" ] || [ "xx${friendId}" == "xx" ]; then
        echo "no plid/friendid found for $1" >&2
    else
        echo "load all songs from playlist id=$plid friendId=$friendId" >&2
        eachSong "$plid" "$friendId"
    fi
else
    echo "$0 URL - loads all music files from a myspace profile"
    echo "URL in form: http://www.myspace.com/PROFILE"
fi