# pylint: disable=C0111,R0903

"""Displays the current song being played
Requires the following library:
    * python-dbus
Parameters:
    * spotify.format:   Format string (defaults to '{artist} - {title}')
                        Available values are: {album}, {title}, {artist}, {trackNumber}, {playbackStatus}
    * spotify.previous: Change binding for previous song (default is left click)
    * spotify.next:     Change binding for next song (default is right click)
    * spotify.pause:    Change binding for toggling pause (default is middle click)
    Available options for spotify.previous, spotify.next and spotify.pause are:
        LEFT_CLICK, RIGHT_CLICK, MIDDLE_CLICK, SCROLL_UP, SCROLL_DOWN
"""

import sys

import bumblebee.input
import bumblebee.output
import bumblebee.engine

from bumblebee.output import scrollable

try:
    import dbus
except ImportError:
    pass


class Module(bumblebee.engine.Module):
    def __init__(self, engine, config):
        super(Module, self).__init__(engine, config,
                                     bumblebee.output.Widget(full_text=self.spotify)
                                     )
        buttons = {'LEFT_CLICK':bumblebee.input.LEFT_MOUSE,
                   'RIGHT_CLICK':bumblebee.input.RIGHT_MOUSE,
                   'MIDDLE_CLICK':bumblebee.input.MIDDLE_MOUSE,
                   'SCROLL_UP':bumblebee.input.WHEEL_UP,
                   'SCROLL_DOWN':bumblebee.input.WHEEL_DOWN,
                   }
        
        self._song = ''
        self._format = self.parameter('format', '{artist} - {title}')
        prev_button = self.parameter('previous', 'LEFT_CLICK')
        next_button = self.parameter('next', 'RIGHT_CLICK')
        pause_button = self.parameter('pause', 'MIDDLE_CLICK')

        cmd = 'dbus-send --session --type=method_call --dest=org.mpris.MediaPlayer2.spotify \
                /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.'
        engine.input.register_callback(self, button=buttons[prev_button],
            cmd=cmd + 'Previous')
        engine.input.register_callback(self, button=buttons[next_button],
            cmd=cmd + 'Next')
        engine.input.register_callback(self, button=buttons[pause_button],
            cmd=cmd + 'PlayPause')

    @scrollable
    def spotify(self, widget):
        return self.string_song

    def hidden(self):
        return self.string_song == ''

    def update(self, widgets):
        try:
            bus = dbus.SessionBus()
            spotify = bus.get_object('org.mpris.MediaPlayer2.spotify', '/org/mpris/MediaPlayer2')
            spotify_iface = dbus.Interface(spotify, 'org.freedesktop.DBus.Properties')
            props = spotify_iface.Get('org.mpris.MediaPlayer2.Player', 'Metadata')
            playback_status = str(spotify_iface.Get('org.mpris.MediaPlayer2.Player', 'PlaybackStatus'))
            self._song = self._format.format(album=str(props.get('xesam:album')),
                                             title=str(props.get('xesam:title')),
                                             artist=','.join(props.get('xesam:artist')),
                                             trackNumber=str(props.get('xesam:trackNumber')),
                                             playbackStatus=u'\u25B6' if playback_status=='Playing' else u'\u258D\u258D' if playback_status=='Paused' else '',)
            
        except Exception:
            self._song = ''

    @property
    def string_song(self):
        if sys.version_info.major < 3:
            return unicode(self._song)
        return str(self._song)
        

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