#!/usr/bin/env python3
import argparse
import logging
import sys
import gi
import json
gi.require_version('Playerctl', '2.0')
from gi.repository import Playerctl, GLib

logger = logging.getLogger(__name__)

def write_output(text, player):
    logger.info('Writing output')
    output = {'text': text,
              'class': 'custom-' + player.props.player_name,
              'alt': player.props.player_name}
    sys.stdout.write(json.dumps(output) + '\n')
    sys.stdout.flush()

def on_play(player, status, manager):
    logger.info('Received new playback status')
    on_metadata(player, player.props.metadata, manager)

def on_metadata(player, metadata, manager):
    logger.info('Received new metadata')
    track_info = ''
    if player.props.player_name == 'spotify':
        track_info = '{artist} - {title}'.format(artist=metadata['xesam:artist'][0], title=metadata['xesam:title'])
    else:
        if 'xesam:artist' in metadata.keys() and 'xesam:title' in metadata.keys():
            track_info = '{artist} - {title}'.format(artist=metadata['xesam:artist'][0], title=metadata['xesam:title'])
        else:
            track_info = metadata['xesam:title']
    write_output(track_info, player)

def on_player_appeared(manager, player):
    logger.info('Player has appeared')
    player.connect('playback-status', on_play, manager)
    player.connect('metadata', on_metadata, manager)
    on_metadata(player, player.props.metadata, manager)

def on_player_vanished(manager, player):
    logger.info('Player has vanished')
    sys.stdout.write('\n')
    sys.stdout.flush()

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--ignore', help='List of player names to ignore', default=[])
    args = parser.parse_args()

    logging.basicConfig(level=logging.INFO)

    manager = Playerctl.PlayerManager()
    loop = GLib.MainLoop()

    manager.connect('name-appeared', lambda *args: on_player_appeared(*args))
    manager.connect('player-vanished', lambda *args: on_player_vanished(*args))

    for player in manager.props.player_names:
        if args.ignore is not None and player.name in args.ignore:
            logger.info("Ignoring player: {player}".format(player=player.name))
            continue
        on_player_appeared(manager, player)

    loop.run()

if __name__ == '__main__':
    main()