import { useState, useEffect } from "react";
import { useQuery } from "@tanstack/react-query";
import { useRoute } from "wouter";
import { type Video } from "@shared/schema";

import go4LogoPath from "@assets/go4_1756394900352.png";
// Helper functions
const formatViews = (views: number): string => {
  if (views >= 1000000) return `${(views / 1000000).toFixed(1)}M`;
  if (views >= 1000) return `${(views / 1000).toFixed(1)}K`;
  return views.toString();
};

const formatDuration = (seconds: number): string => {
  const hours = Math.floor(seconds / 3600);
  const minutes = Math.floor((seconds % 3600) / 60);
  const secs = seconds % 60;

  if (hours > 0) {
    return `${hours}:${minutes.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
  }
  return `${minutes}:${secs.toString().padStart(2, '0')}`;
};

const formatDate = (date: Date | string): string => {
  const d = typeof date === 'string' ? new Date(date) : date;
  return d.toLocaleDateString('en-US', {
    year: 'numeric',
    month: 'long',
    day: 'numeric'
  });
};
import { Button } from "@/components/ui/button";
import { Share2, X, Edit3, Menu, Search, ChevronLeft, ChevronRight } from "lucide-react";
import SearchHeader from "@/components/search-header";
import { Input } from "@/components/ui/input";
import { Link } from "wouter";
import { apiRequest } from "@/lib/queryClient";
import {
  FacebookShareButton,
  TwitterShareButton,
  WhatsappShareButton,
  FacebookIcon,
  TwitterIcon,
  WhatsappIcon,
} from "react-share";

interface VideosResponse {
  videos: Video[];
  total: number;
  hasMore: boolean;
}

export default function VideoPage() {
  const [, params] = useRoute("/video/:id");
  const videoId = params?.id;
  const [showShareMenu, setShowShareMenu] = useState(false);
  const [searchQuery, setSearchQuery] = useState("");
  const [viewMode, setViewMode] = useState<"grid" | "list">("grid");
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);

  // Fetch current video
  const { data: currentVideo, isLoading: videoLoading } = useQuery<Video>({
    queryKey: [`/api/videos/${videoId}`],
    queryFn: () => fetch(`/api/videos/${videoId}`).then(res => res.json()),
    enabled: !!videoId,
  });

  // Fetch recommended videos (excluding current video)
  const { data: recommendedResponse } = useQuery<VideosResponse>({
    queryKey: ["/api/videos"],
    queryFn: () => fetch("/api/videos?limit=20&offset=0").then(res => res.json()),
    enabled: !!videoId,
  });

  const recommendedVideos = recommendedResponse?.videos?.filter(v => v.id !== videoId) || [];
  const allVideos = recommendedResponse?.videos || [];
  
  // Navigation functions
  const getCurrentVideoIndex = () => {
    if (!currentVideo || !allVideos.length) return -1;
    return allVideos.findIndex((v) => v.id === currentVideo.id);
  };

  const navigateToVideo = (direction: 'next' | 'prev') => {
    const currentIndex = getCurrentVideoIndex();
    if (currentIndex === -1) return;
    
    let newIndex;
    if (direction === 'next') {
      newIndex = currentIndex + 1 >= allVideos.length ? 0 : currentIndex + 1;
    } else {
      newIndex = currentIndex - 1 < 0 ? allVideos.length - 1 : currentIndex - 1;
    }
    
    const newVideo = allVideos[newIndex];
    if (newVideo) {
      window.location.href = `/video/${newVideo.id}`;
    }
  };
  
  
  // Update page meta tags for social sharing
  useEffect(() => {
    if (currentVideo) {
      // Update page title
      document.title = `${currentVideo.title} | go4.video`;
      
      // Update meta description
      const metaDescription = document.querySelector('meta[name="description"]');
      if (metaDescription) {
        metaDescription.setAttribute('content', currentVideo.description || `Watch ${currentVideo.title} on go4.video`);
      }
      
      // Update Open Graph tags
      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', currentVideo.title);
      updateMetaTag('og:description', currentVideo.description || `Watch ${currentVideo.title} on go4.video`);
      // Use custom thumbnail if available, otherwise default thumbnail
      const thumbnailForSharing = currentVideo.customThumbnailUrl || currentVideo.thumbnailUrl;
      updateMetaTag('og:image', thumbnailForSharing);
      updateMetaTag('og:url', window.location.href);
      updateMetaTag('og:type', 'video.other');
      updateMetaTag('og:video:duration', currentVideo.duration.toString());
      
      // Update Twitter Card tags  
      const updateTwitterTag = (name: string, content: string) => {
        let meta = document.querySelector(`meta[name="${name}"]`);
        if (!meta) {
          meta = document.createElement('meta');
          meta.setAttribute('name', name);
          document.head.appendChild(meta);
        }
        meta.setAttribute('content', content);
      };
      
      updateTwitterTag('twitter:title', currentVideo.title);
      updateTwitterTag('twitter:description', currentVideo.description || `Watch ${currentVideo.title} on go4.video`);
      updateTwitterTag('twitter:image', thumbnailForSharing);
    }
  }, [currentVideo]);


  // Track video view
  const handleVideoPlay = async () => {
    if (currentVideo) {
      try {
        await apiRequest("POST", `/api/videos/${currentVideo.id}/view`);
      } catch (error) {
        console.error("Failed to track video view:", error);
      }
    }
  };

  const getShareUrl = () => {
    if (!currentVideo?.id) return window.location.origin;
    // Use custom domain if set, otherwise current domain
    const baseUrl = import.meta.env.VITE_SHARE_DOMAIN || window.location.origin;
    return `${baseUrl}/video/${currentVideo.id}`;
  };

  const copyToClipboard = async () => {
    try {
      await navigator.clipboard.writeText(getShareUrl());
      const notification = document.createElement('div');
      notification.textContent = 'Link copied!';
      notification.className = 'fixed top-4 right-4 bg-green-500 text-white px-4 py-2 rounded-lg z-50 transition-opacity duration-300';
      document.body.appendChild(notification);
      setTimeout(() => {
        notification.style.opacity = '0';
        setTimeout(() => document.body.removeChild(notification), 300);
      }, 2000);
      setShowShareMenu(false);
    } catch (error) {
      console.error('Failed to copy link:', error);
    }
  };

  if (videoLoading) {
    return (
      <div className="min-h-screen bg-bunny-dark flex items-center justify-center">
        <div className="text-white">Nalagam video...</div>
      </div>
    );
  }

  if (!currentVideo) {
    return (
      <div className="min-h-screen bg-bunny-dark flex items-center justify-center">
        <div className="text-white">Video not found</div>
      </div>
    );
  }

  return (
    <div className="min-h-screen bunny-dark static-triangles">
      {/* Header */}
      <div className="bg-transparent relative overflow-hidden">
        <div className="max-w-7xl mx-auto px-4 py-4">
          <div className="flex items-center justify-between">
            {/* Left side - Logo */}
            <div className="flex items-center space-x-4">
              <Link href="/" className="flex items-center space-x-2 hover:opacity-80 transition-opacity">
                <div className="w-9 h-9 gradient-primary rounded-lg flex items-center justify-center shadow-lg">
                  <div className="w-0 h-0 border-l-[10px] border-l-white border-y-[7px] border-y-transparent ml-1"></div>
                </div>
                <h1 className="text-2xl font-bold text-white tracking-wide">go4.video</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="text-bunny-light hover:text-bunny-blue transition-colors">
                    Home
                  </Link>
                  <Link href="/folx-stadl" className="text-bunny-light hover:text-bunny-blue transition-colors">
                    FOLX STADL
                  </Link>
                </nav>
                
                <div className="relative">
                  <Input
                    type="search"
                    placeholder="Search videos..."
                    value={searchQuery}
                    onChange={(e) => {
                      setSearchQuery(e.target.value);
                      if (e.target.value) window.location.href = `/?search=${encodeURIComponent(e.target.value)}`;
                    }}
                    className="bg-white border border-gray-300 rounded-lg px-4 py-2 pl-10 text-sm text-gray-900 placeholder-gray-500 focus:outline-none focus:border-bunny-blue transition-colors w-64"
                  />
                  <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>

      <div className="max-w-7xl mx-auto p-4 lg:p-6 relative">
        {/* Background logo decorations */}
        <div 
          style={{
            position: 'absolute',
            top: '20%', 
            right: '8%', 
            transform: 'rotate(-15deg)',
            width: 'clamp(200px, 20vw, 400px)',
            height: 'clamp(100px, 10vw, 200px)',
            backgroundImage: `url(${go4LogoPath})`,
            backgroundSize: 'contain',
            backgroundRepeat: 'no-repeat',
            backgroundPosition: 'center',
            pointerEvents: 'none',
            zIndex: 0,
            opacity: 0.15,
            filter: 'blur(1px)'
          }}
        />
        <div 
          style={{
            position: 'absolute',
            top: '60%', 
            left: '5%', 
            transform: 'rotate(20deg)',
            width: 'clamp(150px, 15vw, 300px)',
            height: 'clamp(75px, 7.5vw, 150px)',
            backgroundImage: `url(${go4LogoPath})`,
            backgroundSize: 'contain',
            backgroundRepeat: 'no-repeat',
            backgroundPosition: 'center',
            pointerEvents: 'none',
            zIndex: 0,
            opacity: 0.12,
            filter: 'blur(0.5px)'
          }}
        />
        <div 
          style={{
            position: 'absolute',
            top: '80%', 
            right: '30%', 
            transform: 'rotate(-25deg)',
            width: 'clamp(100px, 10vw, 200px)',
            height: 'clamp(50px, 5vw, 100px)',
            backgroundImage: `url(${go4LogoPath})`,
            backgroundSize: 'contain',
            backgroundRepeat: 'no-repeat',
            backgroundPosition: 'center',
            pointerEvents: 'none',
            zIndex: 0,
            opacity: 0.08,
            filter: 'blur(0.5px)'
          }}
        />
        <div 
          style={{
            position: 'absolute',
            top: '5%', 
            left: '75%', 
            transform: 'rotate(40deg)',
            width: 'clamp(150px, 15vw, 300px)',
            height: 'clamp(75px, 7.5vw, 150px)',
            backgroundImage: `url(${go4LogoPath})`,
            backgroundSize: 'contain',
            backgroundRepeat: 'no-repeat',
            backgroundPosition: 'center',
            pointerEvents: 'none',
            zIndex: 0,
            opacity: 0.12,
            filter: 'blur(0.5px)'
          }}
        />
        
        <div className="flex flex-col lg:flex-row gap-6 relative z-[60]">
          {/* Main video section */}
          <div className="flex-1">
            {/* Video player */}
            <div className="relative w-full h-0 pb-[56.25%] bg-black rounded-lg overflow-hidden mb-4">
              {/* Navigation arrows */}
              {allVideos.length > 1 && (
                <>
                  <Button
                    onClick={() => navigateToVideo('prev')}
                    className="absolute left-4 top-1/2 transform -translate-y-1/2 bg-black/60 hover:bg-black/80 text-white border-none p-2 rounded-full z-20"
                    size="sm"
                    data-testid="button-prev-video"
                  >
                    <ChevronLeft className="w-6 h-6" />
                  </Button>
                  <Button
                    onClick={() => navigateToVideo('next')}
                    className="absolute right-4 top-1/2 transform -translate-y-1/2 bg-black/60 hover:bg-black/80 text-white border-none p-2 rounded-full z-20"
                    size="sm"
                    data-testid="button-next-video"
                  >
                    <ChevronRight className="w-6 h-6" />
                  </Button>
                </>
              )}
              {currentVideo.videoUrlIframe ? (
                <iframe
                  src={currentVideo.videoUrlIframe}
                  className="absolute inset-0 w-full h-full"
                  frameBorder="0"
                  allowFullScreen
                  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
                  onLoad={handleVideoPlay}
                  title={currentVideo.title}
                />
              ) : (
                <div className="absolute inset-0 flex items-center justify-center text-white">
                  <p>Video not available</p>
                </div>
              )}
            </div>

            {/* Video info */}
            <div className="bg-bunny-gray/50 rounded-lg p-4">
              <div className="flex justify-between items-start mb-4">
                <h1 className="text-xl font-bold text-bunny-light flex-1 pr-4">
                  {currentVideo.title}
                </h1>
                
                <div className="relative">
                  <Button
                    variant="ghost"
                    size="sm"
                    onClick={() => setShowShareMenu(!showShareMenu)}
                    className="text-white hover:bg-gray-700"
                  >
                    <Share2 className="w-4 h-4 mr-2" />
                    Share
                  </Button>
                  
                  {showShareMenu && (
                    <div className="absolute right-0 top-full mt-2 bg-gray-800 rounded-lg shadow-lg py-2 z-50 min-w-[200px]">
                      <FacebookShareButton url={getShareUrl()}>
                        <button className="w-full px-4 py-2 text-left text-white hover:bg-gray-700 flex items-center gap-2">
                          <FacebookIcon size={16} round />
                          Facebook
                        </button>
                      </FacebookShareButton>
                      <TwitterShareButton url={getShareUrl()} title={`Watch "${currentVideo.title}" on go4.video`}>
                        <button className="w-full px-4 py-2 text-left text-white hover:bg-gray-700 flex items-center gap-2">
                          <TwitterIcon size={16} round />
                          Twitter
                        </button>
                      </TwitterShareButton>
                      <WhatsappShareButton url={getShareUrl()} title={`Watch "${currentVideo.title}" on go4.video`}>
                        <button className="w-full px-4 py-2 text-left text-white hover:bg-gray-700 flex items-center gap-2">
                          <WhatsappIcon size={16} round />
                          WhatsApp
                        </button>
                      </WhatsappShareButton>
                      <button
                        onClick={copyToClipboard}
                        className="w-full px-4 py-2 text-left text-white hover:bg-gray-700"
                      >
                        Copy Link
                      </button>
                    </div>
                  )}
                </div>
              </div>

              <div className="flex flex-wrap gap-4 text-sm text-bunny-muted mb-4">
                <span>{formatViews(currentVideo.views)} views</span>
                <span>{formatDuration(currentVideo.duration)}</span>
                <span>{formatDate(currentVideo.createdAt)}</span>
              </div>



              {currentVideo.description ? (
                <div className="text-bunny-light">
                  <p className="text-sm leading-relaxed">{currentVideo.description}</p>
                </div>
              ) : (
                <div className="text-bunny-muted text-sm">
                  <p>Video description not available.</p>
                </div>
              )}
            </div>
          </div>

          {/* Recommended videos sidebar */}
          <div className="w-full lg:w-96">
            <h2 className="text-lg font-semibold text-bunny-light mb-4">Recommended Videos</h2>
            
            <div className="space-y-3">
              {recommendedVideos.slice(0, 10).map((video) => (
                <div
                  key={video.id}
                  onClick={() => window.location.href = `/video/${video.id}`}
                  className="flex gap-3 p-3 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;
                        console.log('Sidebar thumbnail failed:', target.src);
                        
                        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">
                      {formatDuration(video.duration)}
                    </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 space-y-0.5">
                      <div>{formatViews(video.views)} views</div>
                      <div>{formatDate(video.createdAt)}</div>
                    </div>
                  </div>
                </div>
              ))}
            </div>
          </div>
        </div>
      </div>
      
      {/* Footer - same as home page */}
      <footer className="bunny-gray/50 border-t border-white/10 mt-16 relative overflow-hidden">
        {/* Triangle decorations in footer - manjši in bolje pozicionirani */}
        <div className="absolute top-2 right-10 w-0 h-0 border-l-[20px] border-l-transparent border-r-[20px] border-r-transparent border-b-[25px] border-b-purple-400/5 rotate-12 z-0"></div>
        <div className="absolute top-1 left-10 w-0 h-0 border-l-[15px] border-l-transparent border-r-[15px] border-r-transparent border-b-[20px] border-b-blue-400/4 -rotate-12 z-0"></div>
        
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8 relative z-10">
          <div className="flex flex-col md:flex-row items-center justify-between">
            <div className="flex items-center space-x-2 mb-4 md:mb-0">
              <div className="w-8 h-8 gradient-primary rounded-lg flex items-center justify-center shadow-md">
                <div className="w-0 h-0 border-l-[8px] border-l-white border-y-[6px] border-y-transparent ml-0.5"></div>
              </div>
              <span className="text-lg font-semibold text-white">go4.video</span>
            </div>
            
            <div className="text-sm text-bunny-muted">
              © 2024 go4.video. All rights reserved.
            </div>
          </div>
        </div>
      </footer>
    </div>
  );
}