get clementine data

#!/bin/bash
if [[ `pgrep clementine` ]] ; then
    data=$(qdbus org.mpris.clementine /Player org.freedesktop.MediaPlayer.GetMetadata )
    artist=$( echo "$data" | grep  ^artist: | sed  -e 's/artist://' | sed -e 's/^ //' )
    title=$( echo "$data" | grep  ^title: | sed  -e 's/title://' | sed -e 's/^ //' )
    art=$(echo "$data" | grep ^arturl: | sed  -e 's/arturl://' | sed -e 's/^ //' | sed -e 's|file://||' )
    mtime=$(echo "$data" | grep ^mtime: | sed  -e 's/mtime://' | sed -e 's/^ //' )
    mtime=$(( mtime/1000 ))
    etime=$( qdbus org.mpris.clementine /Player org.freedesktop.MediaPlayer.PositionGet )
    etime=$(( etime/1000 ))
fi
case "$1" in
    "a" )
        echo $artist
    ;;
    "t" )
        echo $title
    ;;
    "e" )
        if (( $(( etime%60)) > 9 ))
            then  echo "$(( etime/60 )):$(( etime%60))"
            else  echo "$(( etime/60 )):0$(( etime%60))"
        fi
    ;;
    "m" )
        if (( $(( mtime%60)) > 9 ))
            then  echo "$(( mtime/60 )):$(( mtime%60))"
            else  echo "$(( mtime/60 )):0$(( mtime%60))"
        fi
    ;;
    "c" )
        echo $art
    ;;
    "b" )
        echo $(( etime*100/mtime ))
    ;;
esac