import React from 'react';
import { useRecoilValue } from 'recoil';
import { useRouter } from 'next/router';
import { Skeleton } from 'antd';
import {
  clientConfigStateAtom,
  ClientConfigStore,
  isOnlineSelector,
  serverStatusState,
  appStateAtom,
} from '../../../components/stores/ClientConfigStore';
import { OfflineBanner } from '../../../components/ui/OfflineBanner/OfflineBanner';
import { Statusbar } from '../../../components/ui/Statusbar/Statusbar';
import { OwncastPlayer } from '../../../components/video/OwncastPlayer/OwncastPlayer';
import { ClientConfig } from '../../../interfaces/client-config.model';
import { ServerStatus } from '../../../interfaces/server-status.model';
import { AppStateOptions } from '../../../components/stores/application-state';
import { Theme } from '../../../components/theme/Theme';

export default function VideoEmbed() {
  const status = useRecoilValue<ServerStatus>(serverStatusState);
  const clientConfig = useRecoilValue<ClientConfig>(clientConfigStateAtom);
  const appState = useRecoilValue<AppStateOptions>(appStateAtom);

  const { name } = clientConfig;

  const { offlineMessage } = clientConfig;
  const { viewerCount, lastConnectTime, lastDisconnectTime, streamTitle } = status;
  const online = useRecoilValue<boolean>(isOnlineSelector);

  const router = useRouter();

  /**
   * router.query isn't initialized until hydration
   * (see https://github.com/vercel/next.js/discussions/11484)
   * but router.asPath is initialized earlier, so we parse the
   * query parameters ourselves
   */
  const path = router.asPath.split('?')[1] ?? '';
  const query = path.split('&').reduce((currQuery, part) => {
    const [key, value] = part.split('=');
    return { ...currQuery, [key]: value };
  }, {} as Record<string, string>);

  const initiallyMuted = query.initiallyMuted === 'true';

  const loadingState = <Skeleton active style={{ padding: '10px' }} paragraph={{ rows: 10 }} />;

  const offlineState = (
    <OfflineBanner streamName={name} customText={offlineMessage} notificationsEnabled={false} />
  );

  const onlineState = (
    <>
      <OwncastPlayer
        source="/hls/stream.m3u8"
        online={online}
        initiallyMuted={initiallyMuted}
        title={streamTitle || name}
      />
      <Statusbar
        online={online}
        lastConnectTime={lastConnectTime}
        lastDisconnectTime={lastDisconnectTime}
        viewerCount={viewerCount}
      />
    </>
  );

  const getView = () => {
    if (appState.appLoading) {
      return loadingState;
    }
    if (online) {
      return onlineState;
    }

    return offlineState;
  };

  return (
    <>
      <ClientConfigStore />
      <Theme />
      <div className="video-embed">{getView()}</div>
    </>
  );
}