/**
 * VideoPlayer — zéro dépendance runtime
 *
 * youtube  → <iframe> embed natif (0KB ajouté au bundle)
 * s3/local → <video> natif + HLS.js chargé lazily si .m3u8
 * external → <video> natif
 */

import { useEffect, useRef } from 'react';

type StorageType = 'youtube' | 's3' | 'local' | 'external';

interface VideoPlayerProps {
  storageType: StorageType;
  storageKey: string;
}

export default function VideoPlayer({ storageType, storageKey }: VideoPlayerProps) {
  if (storageType === 'youtube') {
    return <YouTubePlayer videoId={storageKey} />;
  }

  const apiBase = import.meta.env.VITE_API_URL || '/api';
  const url =
    storageType === 'external'
      ? storageKey
      : `${apiBase}/stream/${storageKey}`;

  return <NativePlayer url={url} />;
}

// ── YouTube ───────────────────────────────────────────────────────────────────

function YouTubePlayer({ videoId }: { videoId: string }) {
  return (
    <iframe
      src={`https://www.youtube.com/embed/${videoId}?rel=0&color=white`}
      className="h-full w-full"
      allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
      allowFullScreen
      title="Lecteur vidéo"
    />
  );
}

// ── Native + HLS.js lazy ──────────────────────────────────────────────────────

function NativePlayer({ url }: { url: string }) {
  const videoRef = useRef<HTMLVideoElement>(null);

  useEffect(() => {
    const video = videoRef.current;
    if (!video) return;

    if (!url.includes('.m3u8')) {
      video.src = url;
      return;
    }

    // HLS — import dynamique, ne charge que si nécessaire
    let hls: import('hls.js').default | null = null;

    if (video.canPlayType('application/vnd.apple.mpegurl')) {
      // Safari supporte HLS nativement
      video.src = url;
    } else {
      import('hls.js').then(({ default: Hls }) => {
        if (!Hls.isSupported() || !video) return;
        hls = new Hls();
        hls.loadSource(url);
        hls.attachMedia(video);
      }).catch(() => { /* HLS non disponible — dégradation silencieuse */ });
    }

    return () => { hls?.destroy(); };
  }, [url]);

  return (
    <video
      ref={videoRef}
      className="h-full w-full"
      controls
      playsInline
    />
  );
}