#!/bin/sh
#
####################################
# iTunes Command Line Control v1.0
# written by David Schlosnagle
# created 2001.11.08
####################################

# edited to add random play and ratings
# by 31d1 on 2006.04.24

showHelp () {
    echo "-----------------------------";
    echo "iTunes Command Line Interface";
    echo "-----------------------------";
    echo "Usage: `basename $0` <option>";
    echo;
    echo "Options:";
    echo " status             = Shows iTunes' status, current artist and track.";
    echo " play               = Start playing iTunes.";
    echo " pause              = Pause iTunes.";
    echo " next               = Go to the next track.";
    echo " prev               = Go to the previous track.";
    echo " random [playlist]  = Play random track from playlist (default Library)."
    echo " mute               = Mute iTunes' volume.";
    echo " unmute             = Unmute iTunes' volume.";
    echo " vol up             = Increase iTunes' volume by 10%.";
    echo " vol down           = Increase iTunes' volume by 10%.";
    echo " vol #              = Set iTunes' volume to # [0-100].";
    echo " star #             = Set rating of current track to # [0-5] stars.";
    echo " stop               = Stop iTunes.";
    echo " quit               = Quit iTunes.";
}

if [ $# = 0 ]; then
    showHelp;
fi

while [ $# -gt 0 ]; do
    arg=$1;
    case $arg in
        "status" ) state=`osascript -e 'tell application "iTunes" to player state as string'`;
            echo "iTunes is currently $state.";
            if [ $state = "playing" ]; then
                artist=`osascript -e 'tell application "iTunes" to artist of current track as string'`;
                track=`osascript -e 'tell application "iTunes" to name of current track as string'`;
                echo "Current track $artist:  $track";
            fi
            break ;;

        "play"    ) echo "Playing iTunes.";
            osascript -e 'tell application "iTunes" to play';
            break ;;

        "pause"    ) echo "Pausing iTunes.";
            osascript -e 'tell application "iTunes" to pause';
            break ;;

        "next"    ) echo "Going to next track." ;
            osascript -e 'tell application "iTunes" to next track';
            break ;;

        "prev"    ) echo "Going to previous track.";
            osascript -e 'tell application "iTunes" to previous track';
            break ;;

        "random"  ) 
            if [ "$2" = "" ]
                then
                PLAY="Library" 
            else
                PLAY=$2
            fi
            echo "Playing random track from $PLAY."
            osascript -e 'tell application "iTunes"' -e 'repeat 3 times' -e "set shuffle of playlist \"$PLAY\" to false" -e "set shuffle of playlist \"$PLAY\" to true" -e 'end repeat' -e "play playlist \"$PLAY\"" -e 'end tell';
            break ;;

        "mute"    ) echo "Muting iTunes volume level.";
            osascript -e 'tell application "iTunes" to set mute to true';
            break ;;

        "unmute" ) echo "Unmuting iTunes volume level.";
            osascript -e 'tell application "iTunes" to set mute to false';
            break ;;

        "vol"    ) echo "Changing iTunes volume level.";
            vol=`osascript -e 'tell application "iTunes" to sound volume as integer'`;
            if [ $2 = "up" ]; then
                newvol=$(( vol+10 ));
            fi

            if [ $2 = "down" ]; then
                newvol=$(( vol-10 ));
            fi

            if [ $(($2)) -gt 0 ]; then
                newvol=$2;
            fi
            osascript -e "tell application \"iTunes\" to set sound volume to $newvol";
            break ;;

        "stop"    ) echo "Stopping iTunes.";
            osascript -e 'tell application "iTunes" to stop';
            break ;;

        "star"    )
            if [ $(($2)) -lt 6 ] && [ $(($2)) -gt -1 ]; then
	              echo "Setting rating of current track to $(($2)) stars."
                osascript -e "tell application \"iTunes\" to set rating of current track to \"$(( 20 * $2 ))\"";
            else
                echo "out of range"
            fi
            break ;;
            
        "quit"    ) echo "Quitting iTunes.";
            osascript -e 'tell application "iTunes" to quit';
            exit 1 ;; 

        "help" | * ) echo "help:";
            showHelp;
            break ;;
    esac
done