#!/usr/bin/env python3
import threading
import time

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

from typing import Callable

from Channel import SVT, YouTube
from ChannelProvider import ChannelProvider
from Utils import make_sized_button

WIDTH = 720 / 2
HEIGHT = 1440 / 2
BTN_HEIGHT = 40
SPACER_HEIGHT = 10
SCROLL_RATE = 5

BM_BTN_STYLE = wx.BOTTOM | wx.EXPAND | wx.LEFT | wx.TOP
BTN_STYLE = wx.BORDER_NONE | wx.BU_AUTODRAW | wx.BU_EXACTFIT | wx.BU_NOTEXT

class Cast(wx.Frame):
    def __init__(self, *args, **kw):
        """__init__.
        :param args:
        :param kw:
        """
        super().__init__(*args, **kw)
        self.m_selected_chromecast = None
        self.SetSizeHints(WIDTH, HEIGHT, maxW=WIDTH)
        self.m_index = 0
        self.m_chromecast_thr = threading.Thread(
            target=self.get_chromecasts, args=(), kwargs={}
        )
        self.m_chromecast_thr.start()
        self.m_sizer: wx.Sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_panel: wx.lib.scrolledpanel.ScrolledPanel = scrolled.ScrolledPanel( # type: ignore
            self, -1, style=wx.VSCROLL
        )
        self.m_control = None
        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_providers: list[ChannelProvider] = [
            ChannelProvider(
                "SVT",
                channels=[
                    SVT.SVT("feed"),
                    SVT.SVT("ch-svt1"),
                    SVT.SVT("ch-svt2"),
                    SVT.SVT("ch-svt24"),
                ],
            ),
            ChannelProvider(
                "YouTube",
                channels=[
                    YouTube.YouTube("UCtESv1e7ntJaLJYKIO1FoYw"),
                    YouTube.YouTube("UC9-y-6csu5WGm29I7JiwpnA"),
                    YouTube.YouTube("UCoxcjq-8xIDTYp3uz647V5A"),
                    YouTube.YouTube("UCu6mSoMNzHQiBIOCkHUa2Aw"),
                ],
            ),
        ]
        self.m_selected_channel = None
        self.m_selected_provider_index = None
        self,
        self.show_provider_list(None)

    def add_back_button(self, callback: Callable) -> None:
        backbtn = wx.Button(self.m_panel, -1, label="Go back", size=(WIDTH, BTN_HEIGHT))
        backbtn.Bind(
            wx.EVT_BUTTON, callback
        )
        self.m_sizer.Add(backbtn)

    def get_chromecasts(self) -> None:
        """
        [TODO:description]

        :rtype None: [TODO:description]
        """
        self.m_chromecasts, self.m_browser = pychromecast.get_chromecasts()

    def show_provider_list(self, _) -> None:
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_sizer.AddSpacer(SPACER_HEIGHT * 4)
        closebtn = wx.Button(self.m_panel, -1, label="Close", size=(WIDTH, BTN_HEIGHT))
        closebtn.Bind(wx.EVT_BUTTON, lambda event: self.Destroy())
        self.m_sizer.Add(closebtn)
        provider_index = 0
        for provider in self.m_providers:
            bitmap = provider.get_logo_as_bitmap()
            callback = lambda event, index=provider_index: self.show_channel_list(event, index)
            btn_sizer: wx.BoxSizer = make_sized_button(self.m_panel,bitmap,provider.get_name(),callback) 
            self.m_sizer.Add(btn_sizer)
            provider_index += 1

        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_sizer.Fit(self)
        self.m_sizer.Layout()

    def show_channel_list(self, _, provider_index) -> None:
        self.m_selected_provider_index = provider_index
        self.m_selected_provider = self.m_providers[provider_index]
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_sizer.AddSpacer(SPACER_HEIGHT * 4)
        bck_callback = lambda event: self.show_provider_list(event)
        self.add_back_button(bck_callback)
        channel_index = 0
        for channel in self.m_selected_provider.get_channels():
            bitmap = channel.get_logo_as_bitmap()
            callback = lambda event, index=channel_index: self.show_video_list(event, index)
            btn_sizer: wx.BoxSizer = make_sized_button(self.m_panel,bitmap,channel.get_name(),callback) 
            self.m_sizer.Add(btn_sizer)
            channel_index += 1

        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_sizer.Fit(self)
        self.m_sizer.Layout()

    def show_video_list(self, _, index=0) -> None:
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_sizer.AddSpacer(SPACER_HEIGHT * 4)
        channel = self.m_selected_provider.get_channel_by_index(index)
        if channel.wait():
            with wx.BusyInfo("Please wait, working..."):
                index = 0
                while channel.wait():
                    time.sleep(1)
                    wx.GetApp().Yield()

        callback = lambda event: self.show_channel_list(event, self.m_selected_provider_index)
        self.add_back_button(callback)

        for item in channel.get_items(): # type: ignore
            inner_sizer = wx.BoxSizer(wx.VERTICAL)
            title = wx.StaticText(self.m_panel, -1)
            title.SetLabelMarkup("<span weight='bold' >{}</span>".format(item["title"]))
            description = wx.StaticText(self.m_panel, -1, item["description"])

            description.Wrap(WIDTH -2)
            bitmap = item["thumbnail"]
            btn = wx.BitmapButton(self.m_panel, id=self.m_index, bitmap=bitmap, style= BM_BTN_STYLE)
            btn.Bind(
                wx.EVT_BUTTON,
                lambda event, link=item["link"], provider_index=index: self.show_player(
                    event, link, provider_index
                ),
            )
            inner_sizer.Add(title)
            inner_sizer.Add(btn)
            inner_sizer.Add(description)
            self.m_sizer.Add(inner_sizer)
            self.m_sizer.AddSpacer(SPACER_HEIGHT)
            self.m_index = self.m_index + 1
        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_sizer.Fit(self)
        self.m_sizer.Layout()

    def show_player(self, _, uri, provider_index: int):
        """
        Show the video player

        :param _ event: unused
        :param uri str: the link to the video stream
        """
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_sizer.AddSpacer(SPACER_HEIGHT * 4)
        inner_sizer = wx.GridBagSizer()
        self.m_control = wx.media.MediaCtrl(
            self.m_panel,
        #    size=(WIDTH, HEIGHT/2),
        #    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,
            lambda event, index=provider_index: self.show_video_list(event, index),
        )

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

        if not self.m_chromecast_thr.is_alive() 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, index=provider_index: self.select_chromecast(
                    event, muri, index
                ),
            )
            inner_sizer.Add(chromecast_button, (2, 2))
        self.m_sizer.Add(inner_sizer)

        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_video_list)
        self.load_uri(uri)
        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_sizer.Fit(self)
        self.m_sizer.Layout()
        self.m_panel.ScrollChildIntoView(self.m_control)

    def select_chromecast(self, _, uri, provider_index):
        self.m_sizer.Clear(delete_windows=True)
        self.m_sizer = wx.BoxSizer(wx.VERTICAL)
        self.m_sizer.AddSpacer(SPACER_HEIGHT * 4)

        cancel_btn = wx.Button(self.m_panel, -1, "Cancel", size=(WIDTH, BTN_HEIGHT), style=wx.BU_EXACTFIT)
        cancel_btn.Bind(
            wx.EVT_BUTTON,
            lambda event, index=provider_index: self.show_video_list(event, index),
        )
        self.m_sizer.Add(cancel_btn) #, wx.ALIGN_CENTER_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, size=(WIDTH, BTN_HEIGHT))
            btn.Bind(
                wx.EVT_BUTTON,
                lambda event, chromecast=cast, muri=uri, index=provider_index: self.set_chromecast(
                    event, chromecast, muri, index
                ),
            )
            self.m_sizer.Add(btn)#, wx.ALIGN_CENTER_VERTICAL)
        self.m_panel.SetupScrolling(rate_y=SCROLL_RATE,scrollToTop=True)
        self.m_panel.SetSizer(self.m_sizer)
        self.m_sizer.Fit(self)
        self.m_sizer.Layout()

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

    def cast(self, _, 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()