Control mpc or spotify, giving precedence to spotify

media-player-control.py

#!/usr/bin/env python3

from glob import glob
from os import readlink, getenv
from sys import argv, exit

def is_spotify():
    for path in glob('/proc/*/exe'):
        try:
            if readlink(path) == '/usr/share/spotify/spotify':
                return True
        except:
            pass
    return False

cmd = argv[1] if len(argv) >= 2 else 'status'

current = {}
player = {}

if is_spotify():
    from dbus import SessionBus, Interface
    bus = SessionBus()
    proxy = bus.get_object('org.mpris.MediaPlayer2.spotify','/org/mpris/MediaPlayer2')
    def get_method(n):
        return proxy.get_dbus_method(n, dbus_interface='org.mpris.MediaPlayer2.Player')
    player['next'] = get_method("Next")
    player['prev'] = get_method("Previous")
    player['toggle'] = get_method("PlayPause")
    player['pause'] = get_method("Pause")
    player['play'] = get_method("Play")
    props = Interface(proxy, 'org.freedesktop.DBus.Properties')
    metadata = props.Get('org.mpris.MediaPlayer2.Player', 'Metadata')
    current['title'] = str(metadata.get('xesam:title', ''))
    current['artist'] = ' + '.join(map(str, metadata.get('xesam:artist', [''])))
    current['status'] = str(props.Get('org.mpris.MediaPlayer2.Player', 'PlaybackStatus')).lower()
    current['position'] = ''
else:
    from mpd import MPDClient
    mpc = MPDClient()
    mpc.connect(getenv('MPD_HOST'), 0)
    s = mpc.status()
    c = mpc.currentsong()
    current['status'] = 'paused' if s['state'] == 'pause' else 'playing'
    current['artist'] = c['artist']
    current['title'] = c['title']
    current['position'] = '(%d%%) ' % int(100 * (float(s['elapsed']) / float(s['duration'])))
    player['next'] = mpc.next
    player['prev'] = mpc.previous
    player['toggle'] = mpc.play if current['status'] == 'paused' else mpc.pause
    player['pause'] = mpc.pause
    player['play'] = mpc.play

short_statii = { 'stopped': '◼', 'playing': '▶', 'paused': 'Ⅱ' }
shorten = lambda s, l: s[:l-3] + '...' if len(s) > l else s
current['artist'] = shorten(current['artist'], 20)
current['title'] = shorten(current['title'], 40)
current['short_status'] = short_statii[current['status']]

if cmd == 'current':
    print('%(short_status)s  %(position)s%(artist)s - %(title)s' % current)
elif cmd == 'status':
    print(current['status'])
elif cmd in player:
    player[cmd]()