# pylint: disable=C0111,R0903

"""Displays information about the current song in Google Play music player.

Requires the following executable:
    * gpmdp-remote
"""

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

class Module(bumblebee.engine.Module):
    def __init__(self, engine, config):
        widgets = [
            bumblebee.output.Widget(name='gpmdp.prev'),
            bumblebee.output.Widget(name='gpmdp.main', full_text=self.description),
            bumblebee.output.Widget(name='gpmdp.next'),
        ]
        super(Module, self).__init__(engine, config, widgets)

        engine.input.register_callback(widgets[0], button=bumblebee.input.LEFT_MOUSE,
            cmd='playerctl previous')
        engine.input.register_callback(widgets[1], button=bumblebee.input.LEFT_MOUSE,
             cmd='playerctl play-pause')
        engine.input.register_callback(widgets[2], button=bumblebee.input.LEFT_MOUSE,
             cmd='playerctl next')

        self._status = None
        self._tags = None

    def description(self, widget):
        return self._tags if self._tags else 'n/a'

    def update(self, widgets):
        self._load_song()

    def state(self, widget):
        if widget.name == 'gpmdp.prev':
            return 'prev'
        if widget.name == 'gpmdp.next':
            return 'next'
        return self._status

    def _load_song(self):
        info = ''
        try:
            info = bumblebee.util.execute('gpmdp-remote current')
            status = bumblebee.util.execute('gpmdp-remote status')
        except RuntimeError:
            pass
        self._status = status.split('\n')[0].lower()
        self._tags = info.split('\n')[0]

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