#!/bin/bash

if [ $# -lt 1 ]
then
        echo "No command?"
        exit
fi

if [ "$(pidof spotify)" = "" ] 
then
  echo "Spotify is not running"
  exit
fi

function mpris2_dbus_player_do {
  dbus-send \
    --print-reply \
    --dest=org.mpris.MediaPlayer2.spotify \
    /org/mpris/MediaPlayer2 \
    "org.mpris.MediaPlayer2.Player.$1"
}

function mpris2_dbus_get_player_property {
  dbus-send \
    --print-reply \
    --dest=org.mpris.MediaPlayer2.spotify \
    /org/mpris/MediaPlayer2 \
    org.freedesktop.DBus.Properties.Get \
    string:'org.mpris.MediaPlayer2.Player' "string:$1"
}

case $1 in
    "play")
        mpris2_dbus_player_do PlayPause
        ;;
    "next")
        mpris2_dbus_player_do Next
        ;;
    "prev")
        mpris2_dbus_player_do Previous
        ;;
    "getTitle")
        mpris2_dbus_get_player_property 'Metadata' | \
          egrep -A 1 "title" | \
          egrep -v "title" | \
          cut -b 44- | \
          cut -d '"' -f 1 | \
          egrep -v ^$
        ;;
    "getArtist")
        mpris2_dbus_get_player_property 'Metadata' | \
          -A 2 "artist" | \
          egrep -v "artist" | \
          egrep -v "array" | \
          cut -b 27- | \
          cut -d '"' -f 1 | \
          egrep -v ^$
        ;;
    "getAlbum")
        mpris2_dbus_get_player_property 'Metadata' | \
          egrep -A 2 "album" | \
          egrep -v "album" | \
          egrep -v "array" | \
          cut -b 44- | \
          cut -d '"' -f 1 | \
          egrep -v ^$
        ;;
    "getStatus")
        mpris_dbus_get_player_property 'PlaybackStatus' | \
          grep 'string "[^"]*"' | \
          sed 's/.*"\(.*\)"[^"]*$/\1/'
        ;;
    *)
        echo "Unknown command: " $1
        ;;
esac