# Python imports

# Lib imports
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import GLib

# Application imports
from utils.pulsectl import pulsectl
from ..widgets.audio_sink import AudioSink


class BaseContainer(Gtk.Box):
    def __init__(self):
        super(BaseContainer, self).__init__()

        self._scroll = None
        self._box    = None

        self.pulse        = None
        self.pulse_events = None
        self.sink_inputs  = None
        self.pause_sink   = False

        self._setup_styling()
        self._setup_signals()
        self._subscribe_to_events()
        self._load_widgets()

        self.show_all()


    def _setup_styling(self):
        self.set_orientation(Gtk.Orientation.VERTICAL)
        self.set_margin_top(10)
        self.set_margin_bottom(10)
        self.set_margin_left(10)
        self.set_margin_right(10)

    def _setup_signals(self):
        ...

    def _subscribe_to_events(self):
        event_system.subscribe("handle_new_sync_input", self._handle_new_sync_input)
        event_system.subscribe("handle_del_sync_input", self._handle_del_sync_input)
        event_system.subscribe("handle_cng_sync_input", self._handle_cng_sync_input)

    def _load_widgets(self):
        scroll   = Gtk.ScrolledWindow()
        viewport = Gtk.Viewport()
        box      = Gtk.Box()
        scroll.add(viewport)
        viewport.add(box)

        try:
            pulse             = pulsectl.Pulse()
            self.pulse_events = pulsectl.Pulse('event-printer')
            si, sink_inputs, modules, clients, sink_list = pulse.server_info(), pulse.sink_input_list(), pulse.module_list(), pulse.client_list(), pulse.sink_list()

            logger.debug(f"\n\nServer Info\n{si}\n\nSink Inputs:")
            for sink in sink_list:
                self.add( AudioSink(pulse, sink) )

            self.pulse       = pulse
            self.sink_inputs = sink_inputs
            for sink_input in sink_inputs:
                box.add( AudioSink(pulse, sink_input) )
        except Exception as e:
            logger.debug(f"{e}")

        self._box    = box
        self._scroll = scroll.get_vadjustment()

        self._scroll.connect("changed", self._scroll_to_bottom)

        scroll.set_vexpand(True)
        scroll.set_overlay_scrolling(False)
        scroll.set_margin_top(20)
        scroll.set_margin_bottom(10)
        box.set_orientation(Gtk.Orientation.VERTICAL)
        self.add(scroll)

        self.set_pulse_event_listener()

    def _handle_new_sync_input(self, index):
        sink_input = self.pulse.sink_input_list()[-1]
        self._box.add( AudioSink(self.pulse, sink_input) )

    def _handle_del_sync_input(self, index):
        for sink_input in self.sink_inputs:
            if index == sink_input.index:
                self.sink_inputs.remove(sink_input)

        for child in self._box.get_children():
            if index == child.sink.index:
                child.destroy()

    def _handle_cng_sync_input(self, index):
        for child in self._box.get_children():
            if index == child.sink.index:
                child.do_update()

    def _scroll_to_bottom(self, adjustment):
        self._scroll.set_value( adjustment.get_upper() )

    @daemon_threaded
    def set_pulse_event_listener(self):
        try:
            self.pulse_events.event_mask_set('all')
            self.pulse_events.event_callback_set(self._sub_threaded_event)
            self.pulse_events.event_listen(timeout = 0)
        except Exception as e:
            logger.debug(f"{e}")

    def _sub_threaded_event(self, eve):
        logger.debug(f"Pulse event: {eve}")
        GLib.idle_add(self.handle_event, *(eve,))

    def handle_event(self, eve):
        if eve.facility == "sink_input":
            if eve.t == "change":
                    event_system.emit("handle_cng_sync_input", (eve.index,))

            if eve.t == "new":
                    event_system.emit("handle_new_sync_input", (eve.index,))

            if eve.t == "remove":
                    event_system.emit("handle_del_sync_input", (eve.index,))