import { useState, useEffect, useRef } from 'react';
import { ChevronLeft, Maximize, Volume2, VolumeX, Radio, Menu, X, Search } from 'lucide-react';
import { Link } from 'wouter';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { useQuery } from '@tanstack/react-query';
import VideoCard from '@/components/video-card';
import AdSenseAd from '@/components/adsense-ad';
import HeaderAd from '@/components/HeaderAd';

declare global {
  interface Window {
    Hls: any;
  }
}

export default function LivePage() {
  const videoRef = useRef<HTMLVideoElement>(null);
  const hlsRef = useRef<any>(null);
  const [isLoading, setIsLoading] = useState(true);
  const [isPlaying, setIsPlaying] = useState(false);
  const [volume, setVolume] = useState(1);
  const [isMuted, setIsMuted] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
  const [searchQuery, setSearchQuery] = useState("");

  // HLS stream URL
  const streamUrl = 'https://cdne.folxplay.tv/fxt/streams/ch-4/master.m3u8';

  // Fetch suggested videos
  const { data: videosData } = useQuery({
    queryKey: ['/api/videos'],
    staleTime: 5 * 60 * 1000, // 5 minutes
  });
  
  const videos = (videosData && Array.isArray((videosData as any).videos)) ? (videosData as any).videos : [];

  useEffect(() => {
    // Set page meta tags
    document.title = 'LIVE Stream | video.folx.tv';
    
    const metaDescription = document.querySelector('meta[name="description"]');
    if (metaDescription) {
      metaDescription.setAttribute('content', 'Live stream on video.folx.tv - watch exclusive content in real time.');
    }

    const updateMetaTag = (property: string, content: string) => {
      let meta = document.querySelector(`meta[property="${property}"]`);
      if (!meta) {
        meta = document.createElement('meta');
        meta.setAttribute('property', property);
        document.head.appendChild(meta);
      }
      meta.setAttribute('content', content);
    };

    updateMetaTag('og:title', 'LIVE Stream - video.folx.tv');
    updateMetaTag('og:description', 'Live stream on video.folx.tv - watch exclusive content in real time.');
    updateMetaTag('og:type', 'video.other');
  }, []);

  // Initialize player immediately on mount
  useEffect(() => {
    initializePlayer();
    return () => {
      if (hlsRef.current) {
        hlsRef.current.destroy();
      }
      if (videoRef.current) {
        videoRef.current.src = '';
      }
    };
  }, []);


  const initializePlayer = async () => {
    console.log('🔴 LivePage: Starting to initialize player...');
    
    if (!videoRef.current) {
      console.error('🚨 Video ref not available!');
      return;
    }

    console.log('🔴 Video element found, continuing...');

    try {
      // Load HLS.js if not already loaded
      console.log('🔴 Checking if HLS.js is loaded...');
      if (!window.Hls) {
        console.log('🔴 Loading HLS.js script...');
          const script = document.createElement('script');
          script.src = 'https://cdn.jsdelivr.net/npm/hls.js@1.5.8';
          script.async = true;
          document.head.appendChild(script);
          
          await new Promise((resolve, reject) => {
            script.onload = () => {
              console.log('✅ HLS.js script loaded successfully');
              resolve(null);
            };
            script.onerror = (e) => {
              console.error('❌ Failed to load HLS.js script:', e);
              reject(e);
            };
          });
        } else {
          console.log('✅ HLS.js already available');
        }

        const video = videoRef.current;
        console.log('🔴 Stream URL:', streamUrl);
        
        if (window.Hls && window.Hls.isSupported()) {
          console.log('🔴 HLS.js is supported, initializing...');
          const hls = new window.Hls({
            debug: true,
            enableWorker: false,
            lowLatencyMode: true,
            backBufferLength: 90,
            maxBufferLength: 30,
            maxMaxBufferLength: 600,
            maxBufferSize: 60 * 1000 * 1000,
            maxBufferHole: 0.5
          });
          
          console.log('🔴 Loading source:', streamUrl);
          hls.loadSource(streamUrl);
          hls.attachMedia(video);
          
          hls.on(window.Hls.Events.MEDIA_ATTACHED, () => {
            console.log('✅ HLS media attached successfully');
          });
          
          hls.on(window.Hls.Events.MANIFEST_PARSED, (event: any, data: any) => {
            console.log('✅ HLS manifest parsed successfully:', data);
            console.log('Available levels:', data.levels);
            setIsLoading(false);
            
            // Try auto-play
            video.play().then(() => {
              console.log('✅ Auto-play started successfully');
            }).catch((e) => {
              console.log('⚠️ Auto-play blocked, user interaction required:', e);
              setError('Kliknite play za zagon streama');
            });
          });
          
          hls.on(window.Hls.Events.LEVEL_LOADED, (event: any, data: any) => {
            console.log('📊 Level loaded:', data);
          });
          
          hls.on(window.Hls.Events.FRAG_LOADED, (event: any, data: any) => {
            console.log('📦 Fragment loaded:', data.frag.url);
          });
          
          hls.on(window.Hls.Events.ERROR, (event: any, data: any) => {
            console.error('🚨 HLS Error occurred:', {
              type: data.type,
              details: data.details,
              fatal: data.fatal,
              error: data.error,
              event,
              data
            });
            
            if (data.fatal) {
              switch (data.type) {
                case window.Hls.ErrorTypes.NETWORK_ERROR:
                  console.log('🔄 Network error, attempting recovery...');
                  setError('Napaka pri povezavi s streamom - poskušam znova...');
                  hls.startLoad();
                  break;
                case window.Hls.ErrorTypes.MEDIA_ERROR:
                  console.log('🔄 Media error, attempting recovery...');
                  setError('Napaka pri predvajanju - poskušam znova...');
                  hls.recoverMediaError();
                  break;
                default:
                  console.error('💥 Fatal error, cannot recover:', data);
                  setError(`Napaka pri streamingu: ${data.details}`);
                  break;
              }
            }
          });
          
          hlsRef.current = hls;
          
        } else if (video.canPlayType('application/vnd.apple.mpegurl')) {
          // Native HLS support (Safari)
          console.log('🍎 Using native HLS support (Safari)');
          video.src = streamUrl;
          
          video.addEventListener('loadedmetadata', () => {
            console.log('✅ Native HLS metadata loaded');
            setIsLoading(false);
          });
          
          video.addEventListener('error', (e) => {
            console.error('❌ Native video error:', e);
            setError('Napaka pri nalaganju streama');
          });
          
        } else {
          console.error('❌ HLS not supported in this browser');
          setError('HLS ni podprt v tem brskalniku');
          setIsLoading(false);
        }

        // Add comprehensive video event listeners
        video.addEventListener('play', () => {
          console.log('▶️ Video started playing');
          setIsPlaying(true);
        });

        video.addEventListener('pause', () => {
          console.log('⏸️ Video paused');
          setIsPlaying(false);
        });

        video.addEventListener('volumechange', () => {
          setVolume(video.volume);
          setIsMuted(video.muted);
        });

        video.addEventListener('loadstart', () => {
          console.log('🔄 Video load started');
        });

        video.addEventListener('loadeddata', () => {
          console.log('📊 Video data loaded');
        });

        video.addEventListener('canplay', () => {
          console.log('✅ Video can start playing');
        });

        video.addEventListener('error', (e) => {
          console.error('❌ Video element error:', e);
          setError('Napaka video elementa');
        });

      } catch (error) {
        console.error('💥 Failed to initialize live stream player:', error);
        setError('Napaka pri inicializaciji playerja');
        setIsLoading(false);
      }
    };

  const togglePlayPause = () => {
    if (videoRef.current) {
      if (isPlaying) {
        videoRef.current.pause();
      } else {
        videoRef.current.play().catch((e) => {
          console.log('Play failed:', e);
          setError('Napaka pri predvajanju');
        });
      }
    }
  };

  const toggleMute = () => {
    if (videoRef.current) {
      videoRef.current.muted = !isMuted;
    }
  };

  const toggleFullscreen = () => {
    if (videoRef.current) {
      if (videoRef.current.requestFullscreen) {
        videoRef.current.requestFullscreen();
      }
    }
  };


  return (
    <div className="min-h-screen bg-bunny-dark">
      {/* Header */}
      <div className="bg-bunny-darker border-b border-white/10">
        <div className="container mx-auto px-4 py-4">
          <div className="flex items-center justify-between">
            {/* Left side - Logo */}
            <div className="flex items-center space-x-6 flex-1">
              <Link href="/" className="flex items-center space-x-3 hover:opacity-80 transition-opacity py-4">
                <div className="w-10 h-10 bg-[#da234d] rounded-lg flex items-center justify-center shadow-lg">
                  <div className="w-0 h-0 border-l-[11px] border-l-white border-y-[8px] border-y-transparent ml-1"></div>
                </div>
                <h1 className="text-2xl font-bold text-white tracking-wide">video.folx.tv</h1>
              </Link>
            </div>

            {/* Right side - Navigation + Search */}
            <div className="flex items-center gap-4">
              {/* Desktop navigation */}
              <div className="hidden md:flex items-center space-x-6">
                <nav className="flex space-x-6">
                  <Link href="/" className="relative text-bunny-light hover:text-white transition-colors group">
                    Startseite
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-[#da234d] transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/folx-stadl" className="relative text-bunny-light hover:text-white transition-colors group">
                    FOLX STADL
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-[#da234d] transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/geschichte-lied" className="relative text-bunny-light hover:text-white transition-colors group">
                    DIE GESCHICHTE DES LIEDES
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-[#da234d] transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/gipfelstammtisch" className="relative text-bunny-light hover:text-white transition-colors group">
                    GIPFELSTAMMTISCH
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-[#da234d] transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/live" className="relative text-red-500 hover:text-red-400 transition-colors group font-bold flex items-center space-x-1">
                    <span className="w-2 h-2 bg-red-500 rounded-full animate-pulse"></span>
                    <span>LIVE</span>
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-gradient-to-r from-red-400 via-red-500 to-red-600 transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                </nav>
                
                <div className="relative">
                  <Input
                    type="search"
                    placeholder="Suchen..."
                    value={searchQuery}
                    onChange={(e) => setSearchQuery(e.target.value)}
                    className="bg-white border border-gray-300 rounded-lg px-4 py-1.5 pl-10 text-sm text-gray-900 placeholder-gray-500 focus:outline-none focus:border-[#da234d] transition-colors w-56"
                  />
                  <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
                </div>
              </div>

              {/* Mobile menu button */}
              <button
                onClick={() => setIsMobileMenuOpen(!isMobileMenuOpen)}
                className="md:hidden p-2 rounded-lg bg-white/10 hover:bg-white/20 transition-colors"
                data-testid="button-mobile-menu-live"
              >
                {isMobileMenuOpen ? (
                  <X className="w-6 h-6 text-white" />
                ) : (
                  <Menu className="w-6 h-6 text-white" />
                )}
              </button>
            </div>
          </div>
        </div>

        {/* Mobile menu dropdown */}
        {isMobileMenuOpen && (
          <div className="md:hidden border-t border-white/20 bg-bunny-dark/95 backdrop-blur-md">
            <div className="px-6 py-4">
              {/* Navigation Section */}
              <div className="mb-6">
                <h3 className="text-white text-xs font-semibold uppercase tracking-wider mb-3 opacity-70">Navigation</h3>
                <nav className="flex flex-col space-y-4">
                  <Link 
                    href="/" 
                    className="text-bunny-light hover:text-white transition-colors font-medium py-1 border-l-2 border-transparent hover:border-[#da234d] pl-3"
                    onClick={() => setIsMobileMenuOpen(false)}
                  >
                    Startseite
                  </Link>
                  <Link 
                    href="/folx-stadl" 
                    className="text-bunny-light hover:text-white transition-colors font-medium py-1 border-l-2 border-transparent hover:border-[#da234d] pl-3"
                    onClick={() => setIsMobileMenuOpen(false)}
                  >
                    FOLX STADL
                  </Link>
                  <Link 
                    href="/geschichte-lied" 
                    className="text-bunny-light hover:text-white transition-colors font-medium py-1 border-l-2 border-transparent hover:border-[#da234d] pl-3"
                    onClick={() => setIsMobileMenuOpen(false)}
                  >
                    DIE GESCHICHTE DES LIEDES
                  </Link>
                  <Link 
                    href="/gipfelstammtisch" 
                    className="text-bunny-light hover:text-white transition-colors font-medium py-1 border-l-2 border-transparent hover:border-[#da234d] pl-3"
                    onClick={() => setIsMobileMenuOpen(false)}
                  >
                    GIPFELSTAMMTISCH
                  </Link>
                  <Link 
                    href="/live" 
                    className="text-red-500 hover:text-red-400 transition-colors font-bold py-1 border-l-2 border-transparent hover:border-red-500 pl-3 flex items-center space-x-2"
                    onClick={() => setIsMobileMenuOpen(false)}
                  >
                    <span className="w-2 h-2 bg-red-500 rounded-full animate-pulse"></span>
                    <span>LIVE</span>
                  </Link>
                </nav>
              </div>
              
              {/* Separator */}
              <div className="border-t border-white/10 mb-4"></div>
              
              {/* Search Section */}
              <div>
                <h3 className="text-white text-xs font-semibold uppercase tracking-wider mb-3 opacity-70">Suchen</h3>
                <div className="relative">
                  <Input
                    type="search"
                    placeholder="Suchen..."
                    value={searchQuery}
                    onChange={(e) => setSearchQuery(e.target.value)}
                    className="bg-white/10 border border-white/20 rounded-lg px-4 py-2.5 pl-10 text-sm text-white placeholder-white/60 focus:outline-none focus:border-[#da234d] focus:bg-white/15 transition-all w-full"
                  />
                  <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-white/60 w-4 h-4" />
                </div>
              </div>
            </div>
          </div>
        )}
      </div>

      {/* Fixed Header Ad */}
      <HeaderAd />

      <div className="container mx-auto px-4 py-3">
        <div className="flex flex-col lg:flex-row gap-4">
          {/* Main Video Player */}
          <div className="flex-1">
            <div className="bg-black rounded-lg overflow-hidden shadow-2xl">
              <div className="relative aspect-video">
                {error && (
                  <div className="absolute inset-0 flex items-center justify-center bg-black/80 text-red-400 z-20">
                    <div className="text-center">
                      <Radio className="w-12 h-12 mx-auto mb-4 opacity-50" />
                      <p className="text-lg font-semibold mb-2">Stream Error</p>
                      <p className="text-sm opacity-75">{error}</p>
                      <Button 
                        onClick={() => {
                          setError(null);
                          setIsLoading(true);
                          window.location.reload();
                        }}
                        className="mt-4 bg-red-600 hover:bg-red-700"
                        data-testid="button-retry"
                      >
                        Poskusite znova
                      </Button>
                    </div>
                  </div>
                )}
                
                <video
                  ref={videoRef}
                  className="w-full h-full bg-black"
                  playsInline
                  autoPlay
                  muted
                  controls
                  crossOrigin="anonymous"
                />
                
              </div>
            </div>

            {/* AdSense Ad under video stream */}
            <div className="mt-6">
              <AdSenseAd 
                adSlot="3047267170"
                width={728}
                height={90}
                className="w-full"
              />
            </div>
          </div>

          {/* Sidebar - Empfohlene Videos */}
          <div className="w-full lg:w-96 space-y-4">
            {/* Sidebar Ad */}
            <div className="mb-6">
              <AdSenseAd 
                adSlot="5629279662"
                width={728}
                height={90}
                className="w-full"
              />
            </div>
            
            <h2 className="text-lg font-semibold text-bunny-light mb-4">Empfohlene Videos</h2>
            
            <div className="space-y-2">
              {videos.slice(0, 10).map((video: any) => (
                <div
                  key={video.id}
                  onClick={() => {
                    const shortId = video.id.replace(/-/g, '').substring(0, 8);
                    window.location.href = `/video/${shortId}`;
                  }}
                  className="flex gap-3 p-2 bg-bunny-gray/30 hover:bg-bunny-gray/50 rounded-lg cursor-pointer transition-colors"
                >
                  <div className="relative w-24 h-16 bg-gray-700 rounded overflow-hidden flex-shrink-0">
                    <img
                      src={video.thumbnailUrl}
                      alt={video.title}
                      className="w-full h-full object-cover"
                      onError={(e) => {
                        const target = e.target as HTMLImageElement;
                        target.style.display = 'none';
                        if (target.parentElement && !target.parentElement.querySelector('.thumbnail-placeholder')) {
                          target.parentElement.style.background = 'linear-gradient(135deg, #1f2937, #374151)';
                          const placeholder = document.createElement('div');
                          placeholder.className = 'thumbnail-placeholder absolute inset-0 flex items-center justify-center text-white text-xs';
                          placeholder.innerHTML = '<div>🎬</div>';
                          target.parentElement.appendChild(placeholder);
                        }
                      }}
                    />
                    <div className="absolute bottom-1 right-1 bg-black/70 text-white text-xs px-1 py-0.5 rounded">
                      {video.duration ? Math.floor(video.duration / 60) + ':' + String(video.duration % 60).padStart(2, '0') : '0:00'}
                    </div>
                  </div>
                  
                  <div className="flex-1 min-w-0">
                    <h3 className="text-sm font-medium text-bunny-light mb-1 line-clamp-2"
                        style={{
                          display: '-webkit-box',
                          WebkitLineClamp: 2,
                          WebkitBoxOrient: 'vertical',
                          overflow: 'hidden'
                        }}>
                      {video.title}
                    </h3>
                    <div className="text-xs text-bunny-muted">
                      <div>{video.views ? (video.views >= 1000 ? Math.floor(video.views / 1000) + 'K' : video.views) : '0'} views • {video.createdAt ? new Date(video.createdAt).toLocaleDateString('de-DE') : 'Unknown date'}</div>
                    </div>
                  </div>
                </div>
              ))}
            </div>
            
            {/* Bottom Sidebar Ad */}
            <div className="mt-6">
              <AdSenseAd 
                adSlot="9876543210"
                width={728}
                height={90}
              />
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}