#!/bin/bash

# mpd (www.musicpd.org) now playing script
# author: Thomas Kear (qupada@initng.org)
# no warranty expressed or implied.  if it breaks, you get to keep both pieces

#more useful variables
mpd_host="127.0.0.1"
mpd_port="6600"
music_dir="/var/lib/mpd/music"


#ways to get info from mpd
status() {
        echo -e 'status\nclose' | nc $mpd_host $mpd_port | grep $1 | gawk -F\:\  '{print $2}'
}
currentsong() {
        echo -e 'currentsong\nclose' | nc $mpd_host $mpd_port | grep $1 | gawk -F\:\  '{print $2}'
}


artist() {
        currentsong "Artist"
}
album() {
        currentsong "Album"
}
title() {
        currentsong "Title"
}

elapsed() {
        stoms `status "time" | gawk -F\: '{print $1}'`
}
length() {
        stoms `status "time" | gawk -F\: '{print $2}'`
}
#convert value in seconds to minutes:seconds
stoms(){
        m=$1
        s=$1
        ((m/=60))
        ((s-=((m*60))))
        if ((s<10)); then s="0$s"; fi
        echo "$m:$s"
}

#position starts at 0, not much use
position() {
        pos=`currentsong "Pos"`
        ((pos+=1))
        echo $pos
}
playlistlength() {
        status "playlistlength"
}

#really clever trick involving calculating the bit rate from filesize/length
bitrate() {
        filename="$music_dir/`currentsong "file"`"
        filename=`ls -l "$filename" | gawk -F"-> "  '{print $2}'`
        size=`status "bitrate"`
        #echo "\n\n\n $filename"
        #ls -l "$filename"
        #size= status "`bitrate`"
        #size=`ls -l "$filename" | gawk -F\  '{print $5}'`
        length=`status "time" | gawk -F\: '{print $2}'`
        #((size/=125))
        #echo `ls -l "$filename"`
        #((size*=8))
        #((size/=128))
        #((size/=length))
        [[ -n `echo $filename | grep 'mp3'` ]] && type="mp3"
        [[ -n `echo $filename | grep 'flac'` ]] && type="flac"
        [[ -n `echo $filename | grep 'wma'` ]] && type="wma"
        [[ -n `echo $filename | grep 'ogg'` ]] && type="ogg"
        #size = `echo -e 'status\nclose' | nc $mpd_host $mpd_port | grep bitrate | gawk -F" " '{print $2}'`
        echo $type":"$size"kbps"
}

state() {
        status "state"
}


if [[ `state` == "stop" ]]; then
        echo "MPD: Stopped"
elif [[ `state` == "play" ]]; then
        echo "Now playing: "\
                `artist`" - "`album`" - "`title`" |"\
                `elapsed`"/"`length`" |"\
                `position`"/"`playlistlength`" |"\
                `bitrate`
else
        echo "Paused: "`artist`" - "`album`" - "`title`
fi