import React, { useEffect, useMemo } from 'react';
import { selectAppData, selectPeers, selectPeerScreenSharing, useEmbedShare, useHMSStore } from '@100mslive/react-sdk';
import { SecondaryTiles } from '../components/SecondaryTiles';
import { ToastManager } from '../components/Toast/ToastManager';
import { ProminenceLayout } from '../components/VideoLayouts/ProminenceLayout';
import { Box } from '../../Layout';
import { useResetEmbedConfig, useSetAppDataByKey } from '../components/AppData/useUISettings';
import { APP_DATA } from '../common/constants';

export const EmbedView = () => {
  return (
    <EmbedScreenShareView>
      <EmbedComponent />
    </EmbedScreenShareView>
  );
};

export const EmbedScreenShareView = ({ children }) => {
  const peers = useHMSStore(selectPeers);

  const peerPresenting = useHMSStore(selectPeerScreenSharing);
  const [, setActiveScreenSharePeer] = useSetAppDataByKey(APP_DATA.activeScreensharePeerId);

  const smallTilePeers = useMemo(() => {
    const smallTilePeers = peers.filter(peer => peer.id !== peerPresenting?.id);
    return smallTilePeers;
  }, [peers, peerPresenting]);

  useEffect(() => {
    setActiveScreenSharePeer(peerPresenting?.id);
    return () => {
      setActiveScreenSharePeer('');
    };
  }, [peerPresenting?.id, setActiveScreenSharePeer]);
  return (
    <ProminenceLayout.Root>
      <ProminenceLayout.ProminentSection>{children}</ProminenceLayout.ProminentSection>
      <SecondaryTiles peers={smallTilePeers} />
    </ProminenceLayout.Root>
  );
};
/**
 * EmbedView is responsible for rendering the iframe and managing the screen sharing functionality.
 */
const EmbedComponent = () => {
  const embedConfig = useHMSStore(selectAppData(APP_DATA.embedConfig));
  const resetConfig = useResetEmbedConfig();

  // need to send resetConfig to clear configuration, if stop screenshare occurs.
  const { iframeRef, startEmbedShare, isEmbedShareInProgress } = useEmbedShare(resetConfig);

  useEffect(() => {
    (async () => {
      if (embedConfig && !isEmbedShareInProgress) {
        try {
          await startEmbedShare(embedConfig);
        } catch (err) {
          resetConfig();
          ToastManager.addToast({
            title: `Error while sharing embed url ${err.message || ''}`,
            variant: 'error',
          });
        }
      }
    })();
  }, [isEmbedShareInProgress, embedConfig, startEmbedShare, resetConfig]);

  return (
    <Box
      css={{
        mx: '$8',
        flex: '3 1 0',
        '@lg': {
          flex: '2 1 0',
          display: 'flex',
          alignItems: 'center',
        },
      }}
    >
      <iframe
        title="Embed View"
        ref={iframeRef}
        style={{
          width: '100%',
          height: '100%',
          border: 0,
          borderRadius: '0.75rem',
        }}
        allow="autoplay; clipboard-write;"
        referrerPolicy="no-referrer"
      />
    </Box>
  );
};