Sets the playlist in Amarok to a given list of files, set loop mode, and play (using DBUS)

set-amarok-playlist.bash

#!/bin/bash

if [ "$#" -ne 1 ]; then
    echo "ERROR: Need one parameter" 2>&1
    echo "SYNTAX: amarok-set-playlist [some.playlist]" 2>&1
    echo "Where some.playlist is a file with one absolute path per line" 2>&1
    exit 1
fi

PLAYLIST=$1

if [ ! -r "$PLAYLIST" ]; then
    echo "ERROR: Can't read playlist $PLAYLIST" 2>&1
    exit 1
fi

listLength=$(dbus-send --session --print-reply --dest=org.kde.amarok --type="method_call" /TrackList org.freedesktop.MediaPlayer.GetLength 2>/dev/null | grep int32 | sed -e 's/   //' | cut -d ' ' -f 2)

for (( i=0; i<$listLength; i++ )); do 
    dbus-send --session --dest=org.kde.amarok --type="method_call" /TrackList org.freedesktop.MediaPlayer.DelTrack int32:0
done

dbus-send --session --dest=org.kde.amarok --type="method_call" /TrackList org.freedesktop.MediaPlayer.SetLoop boolean:true

while read filepath; do
    dbus-send --session --dest=org.kde.amarok --type="method_call" /TrackList org.freedesktop.MediaPlayer.AddTrack string:"$filepath" boolean:false &>/dev/null
done <$PLAYLIST

dbus-send --session --dest=org.kde.amarok --type="method_call" /Player org.freedesktop.MediaPlayer.Stop &>/dev/null
dbus-send --session --dest=org.kde.amarok --type="method_call" /Player org.freedesktop.MediaPlayer.Play &>/dev/null

Based on https://github.com/seanhodges/Tesla/blob/master/docs/amarok-set-playlist.sh