import logging
from gi.repository import Gst, Gdk, GLib

from lib.config import Config
import lib.connection as Connection


class AudioSelectorController(object):
    """Displays a Level-Meter of another VideoDisplay into a GtkWidget"""

    def __init__(self, drawing_area, win, uibuilder):
        self.log = logging.getLogger('AudioSelectorController')

        self.drawing_area = drawing_area
        self.win = win

        combo = uibuilder.find_widget_recursive(win, 'combo_audio')
        combo.connect('changed', self.on_changed)
        # combo.set_sensitive(True)
        self.combo = combo

        eventbox = uibuilder.find_widget_recursive(win, 'combo_audio_events')
        eventbox.connect('button_press_event', self.on_button_press_event)
        eventbox.set_property('above_child', True)
        self.eventbox = eventbox

        combo.remove_all()
        for name in Config.getlist('mix', 'sources'):
            combo.append(name, name)

        # connect event-handler and request initial state
        Connection.on('audio_status', self.on_audio_status)
        Connection.send('get_audio')

        self.timer_iteration = 0

    def on_audio_status(self, source):
        self.log.info('on_audio_status callback w/ source: %s', source)
        self.combo.set_active_id(source)

    def on_button_press_event(self, combo, event):
        if event.type != Gdk.EventType.DOUBLE_BUTTON_PRESS:
            return

        self.log.debug('double-clicked, unlocking')
        self.set_enabled(True)
        GLib.timeout_add_seconds(5, self.on_disabled_timer,
                                 self.timer_iteration)

    def on_disabled_timer(self, timer_iteration):
        if timer_iteration != self.timer_iteration:
            self.log.debug('lock-timer fired late, ignoring')
            return

        self.log.debug('lock-timer fired, locking')
        self.set_enabled(False)
        return False

    def set_enabled(self, enable):
        self.combo.set_sensitive(enable)
        self.eventbox.set_property('above_child', not enable)

    def is_enabled(self):
        return self.combo.get_sensitive()

    def on_changed(self, combo):
        if not self.is_enabled():
            return

        self.timer_iteration += 1

        value = combo.get_active_text()
        self.log.info('changed to %s', value)
        self.set_enabled(False)
        Connection.send('set_audio', value)