import { useEffect, useRef, ReactElement } from "react";
import videojs from 'video.js';
import 'videojs-playlist';
import 'video.js/dist/video-js.css';
import Player from "video.js/dist/types/player";

type VideoPlayerProps = {
    children?: ReactElement | ReactElement[],
    options?: {
        [key: string]: any
    },
    seekOptions?: {
        forward?: number,
        backward?: number,
    },
    onReady?: (player: Player) => void,
    onDispose?: () => void,
}

export default function VideoPlayer({ children, options, seekOptions = {forward:30, backward: 10}, onReady = (_) => {}, onDispose = () => {} }: VideoPlayerProps) {
    const videoRef = useRef<HTMLVideoElement | null>(null);
    const playerRef = useRef<Player | null>(null);

    useEffect(() => {
      const defaultOptions = {
        controls: true,
        controlBar: {
          skipButtons: seekOptions,
        },
        playbackRates: [0.5, 1, 2, 4, 8],
        fluid: true,
      };


      if (!videojs.browser.IS_FIREFOX) {
        defaultOptions.playbackRates.push(16);
      }

      // Make sure Video.js player is only initialized once
      if (!playerRef.current) {
        // The Video.js player needs to be _inside_ the component el for React 18 Strict Mode.
        const videoElement = document.createElement("video-js");

        videoElement.classList.add('small-player');
        videoElement.classList.add('video-js');
        videoElement.classList.add('vjs-default-skin');
        videoRef.current.appendChild(videoElement);

        const player = playerRef.current = videojs(videoElement, { ...defaultOptions, ...options }, () => {
          onReady && onReady(player);
        });
      }
    }, [options, videoRef]);

    // Dispose the Video.js player when the functional component unmounts
    useEffect(() => {
      const player = playerRef.current;

      return () => {
        if (player && !player.isDisposed()) {
          player.dispose();
          playerRef.current = null;
          onDispose();
        }
      };
    }, [playerRef]);

    return (
      <div data-vjs-player>
        <div ref={videoRef} />
        {children}
      </div>
    );
  }