# Copyright 2011-2013 Christoph Reiter
#                2016 Nick Boultbee
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

import re

from quodlibet import _
from quodlibet import app
from quodlibet.qltk import Icons
from quodlibet.util import re_escape
from quodlibet.plugins.events import EventPlugin


class RadioAdMute(EventPlugin):
    PLUGIN_ID = "radio_ad_mute"
    PLUGIN_NAME = _("Mute Radio Ads")
    PLUGIN_DESC = _("Mutes output while radio advertisements are playing.\n"
                    "Stations: di.fm.")
    PLUGIN_ICON = Icons.AUDIO_VOLUME_MUTED

    TEXT_SPAM = [
        "www.webex.co.uk",
        "di.fm/premium",
        "There's more to Digitally Imported!",
        "Digitally Imported AMTAG_60 ADWTAG_30000_START=0",
        "Digitally Imported TSTAG_60 ADWTAG",
        "PhotonVPS.com",
        "Get Digitally Imported Premium",
        "More of the show after these messages",
        "Choose premium for the best audio experience",
        "www.di.fm/jobs",
    ]

    RE_SPAM = [
        r"Sponsored Message\s+\([0-9]+\)",
    ]

    _SPAM = list(map(re_escape, TEXT_SPAM)) + RE_SPAM
    SPAM = [re.compile(s, re.I) for s in _SPAM]

    __old_volume = 0
    __muted = False

    def disabled(self):
        self.plugin_on_song_ended()

    def plugin_on_song_started(self, song):
        # only check stream info songs
        if not song or not song.streamsong:
            return

        player = app.player
        data = song("~title~artist")
        for spam in self.SPAM:
            if spam.search(data):
                self.__old_volume = player.volume
                self.__muted = True
                player.volume = 0
                break

    def plugin_on_song_ended(self, *args):
        if not self.__muted:
            return
        self.__muted = False

        player = app.player
        if player.volume != 0:  # volume changed, do nothing
            return

        # restore old volume
        player.volume = self.__old_volume
