#!/usr/bin/env python3
import time
from typing import NewType

import pychromecast
import wx
import wx.lib.scrolledpanel as scrolled
import wx.media

from ChannelProvider import SVT, ChannelProvider

ChannelProvider = NewType('ChannelProvider', ChannelProvider)


class Cast(wx.Frame):
    m_selected_chromecast = None

    def __init__(self, *args, **kw):
        """__init__.
        :param args:
        :param kw:
        """
        super().__init__(*args, **kw)
        self.m_chromecasts, self.m_browser = pychromecast.get_chromecasts()
        self.m_index = 0
        self.m_sizer: wx.Sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_panel: wx.lib.scrolledpanel.ScrolledPanel = scrolled.ScrolledPanel(
            self, -1, style=wx.VSCROLL)
        self.m_control = None
        self.m_panel.SetupScrolling()
        self.m_panel.SetSizer(self.m_sizer)
        self.m_channels: list[ChannelProvider] = [SVT.SVT()]
        self.show_list(None)

    def show_list(self, _):
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)

        for channel in self.m_channels:
            for item in channel.get_items():
                title = wx.StaticText(self.m_panel, -1, item['title'])
                description = wx.StaticText(self.m_panel, -1,
                                            item['description'])
                bitmap = item['thumbnail']
                btn = wx.BitmapButton(self.m_panel,
                                      id=self.m_index,
                                      bitmap=bitmap)
                btn.Bind(wx.EVT_BUTTON,
                         lambda event, link=item['link']: self.show_player(
                             event, link))
                self.m_sizer.Add(title)
                self.m_sizer.Add(btn)
                self.m_sizer.Add(description)
                self.m_index = self.m_index + 1
        self.m_panel.SetSizer(self.m_sizer)
        self.m_panel.Layout()

    def show_player(self, _, uri):
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.GridBagSizer()
        self.m_control = wx.media.MediaCtrl(
            self.m_panel,
            size=(480, 480),
            style=wx.SIMPLE_BORDER,
            szBackend=wx.media.MEDIABACKEND_GSTREAMER)
        play_button = wx.Button(self.m_panel, -1, "Play")

        pause_button = wx.Button(self.m_panel, -1, "Pause")

        back_button = wx.Button(self.m_panel, -1, "Back")
        back_button.Bind(wx.EVT_BUTTON, self.show_list)

        self.m_sizer.Add(self.m_control, (0, 0))
        self.m_sizer.SetItemSpan(0, (0, 6))
        self.m_sizer.Add(play_button, (1, 1))
        self.m_sizer.Add(pause_button, (1, 2))
        self.m_sizer.Add(back_button, (1, 3))

        if self.m_chromecasts and not self.m_selected_chromecast:
            chromecast_button = wx.Button(self.m_panel, -1, "Cast")
            chromecast_button.Bind(
                wx.EVT_BUTTON,
                lambda event, muri=uri: self.select_chromecast(event, muri))
            self.m_sizer.Add(chromecast_button, (2, 2))

        if self.m_selected_chromecast:
            self.Bind(wx.media.EVT_MEDIA_LOADED,
                      lambda event, muri=uri: self.cast(event, muri))
            play_button.Bind(wx.EVT_BUTTON, self.play_cast)
            pause_button.Bind(wx.EVT_BUTTON, self.pause_cast)
        else:
            self.Bind(wx.media.EVT_MEDIA_LOADED, self.play)
            play_button.Bind(wx.EVT_BUTTON, self.play)
            pause_button.Bind(wx.EVT_BUTTON, self.pause)

        self.Bind(wx.media.EVT_MEDIA_FINISHED, self.show_list)
        self.load_uri(uri)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_panel.Layout()
        self.m_panel.ScrollChildIntoView(self.m_control)

    def select_chromecast(self, _, uri):
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)

        for cast in self.m_chromecasts:
            friendly_name = cast.cast_info.friendly_name
            btn = wx.Button(self.m_panel, id=-1, label=friendly_name)
            btn.Bind(wx.EVT_BUTTON,
                     lambda event, chromecast=cast, muri=uri: self.
                     set_chromecast(event, chromecast, muri))
            self.m_sizer.Add(btn)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_panel.Layout()

    def set_chromecast(self, event, chromecast, uri):
        self.m_selected_chromecast = chromecast
        self.show_player(event, uri)

    def cast(self, event, uri):
        mimetype = 'video/mp4'
        cast = self.m_selected_chromecast
        cast.wait()
        cast.media_controller.play_media(uri, mimetype)
        # Wait for player_state PLAYING
        player_state = None
        has_played = False

        while True:
            if player_state != cast.media_controller.status.player_state:
                player_state = cast.media_controller.status.player_state
                print("Player state:", player_state)

            if player_state == "PLAYING":
                has_played = True
                break

            if cast.socket_client.is_connected and has_played and player_state != "PLAYING":
                has_played = False
                cast.media_controller.play_media(uri, mimetype)

            time.sleep(0.1)
        self.m_browser.stop_discovery()

    def pause_cast(self, event):
        cast = self.m_selected_chromecast
        cast.media_controller.pause()

    def play_cast(self, event):
        cast = self.m_selected_chromecast
        cast.media_controller.play()

    def load_uri(self, uri):
        self.m_control.LoadURI(uri)

    def play(self, _):
        self.m_control.Play()

    def pause(self, _):
        self.m_control.Pause()

    def quit(self, _):
        self.Destroy()


if __name__ == '__main__':
    # When this module is run (not imported) then create the app, the
    # frame, show it, and start the event loop.
    app: wx.App = wx.App()
    frm: Cast = Cast(None, title='Cast')
    frm.Show()
    app.MainLoop()