import { useState, useEffect } from "react";
import { useQuery } from "@tanstack/react-query";
import { type Video } from "@shared/schema";
import NetflixGrid from "@/components/netflix-grid";
import { Link } from "wouter";
import { Input } from "@/components/ui/input";
import { Search, Menu, X } from "lucide-react";

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

export default function Home() {
  const [searchQuery, setSearchQuery] = useState("");
  const [allVideos, setAllVideos] = useState<Video[]>([]);
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);

  // Fetch videos with optimized loading
  const { data: videosResponse, isLoading, refetch } = useQuery<VideosResponse>({
    queryKey: ["/api/videos", { 
      limit: 150,
      offset: 0, 
      search: searchQuery || undefined
    }],
    queryFn: async ({ queryKey }) => {
      const [, params] = queryKey as [string, any];
      const searchParams = new URLSearchParams();
      
      Object.entries(params).forEach(([key, value]) => {
        if (value !== undefined) {
          searchParams.append(key, String(value));
        }
      });

      const response = await fetch(`/api/videos?${searchParams}`);
      if (!response.ok) {
        throw new Error('Failed to fetch videos');
      }
      return response.json();
    },
    staleTime: 5 * 60 * 1000,
    gcTime: 10 * 60 * 1000,
    refetchOnWindowFocus: false,
    refetchOnReconnect: false
  });

  // Update videos when new data comes in
  useEffect(() => {
    if (videosResponse) {
      setAllVideos(videosResponse.videos);
    }
  }, [videosResponse]);

  // Only refetch when search changes
  useEffect(() => {
    if (searchQuery !== undefined) {
      refetch();
    }
  }, [searchQuery, refetch]);

  return (
    <div className="has-fixed-header" style={{minHeight: '100vh', background: 'linear-gradient(135deg, hsl(250, 50%, 15%) 0%, hsl(240, 30%, 25%) 100%)', color: 'white'}}>
      {/* STICKY HEADER */}
      <div className="header-sticky bg-transparent overflow-hidden">
        <div className="container py-6">
          <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 gradient-primary 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">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="relative text-bunny-light hover:text-bunny-blue transition-colors group">
                    Home
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-gradient-to-r from-purple-400 via-blue-500 to-purple-600 transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/folx-stadl" className="relative text-bunny-light hover:text-bunny-blue transition-colors group">
                    FOLX STADL
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-gradient-to-r from-purple-400 via-blue-500 to-purple-600 transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/geschichte-lied" className="relative text-bunny-light hover:text-bunny-blue transition-colors group">
                    DIE GESCHICHTE DES LIEDES
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-gradient-to-r from-purple-400 via-blue-500 to-purple-600 transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                  <Link href="/gipfelstammtisch" className="relative text-bunny-light hover:text-bunny-blue transition-colors group">
                    GIPFELSTAMMTISCH
                    <span className="absolute bottom-0 left-0 w-0 h-0.5 bg-gradient-to-r from-purple-400 via-blue-500 to-purple-600 transition-all duration-300 group-hover:w-full"></span>
                  </Link>
                </nav>
                
                <div className="relative">
                  <Input
                    type="search"
                    placeholder="Search..."
                    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-bunny-blue 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"
              >
                {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-4 py-3">
              <nav className="flex flex-col space-y-3 mb-4">
                <Link 
                  href="/" 
                  className="text-bunny-light hover:text-bunny-blue transition-colors text-sm font-medium"
                  onClick={() => setIsMobileMenuOpen(false)}
                >
                  Home
                </Link>
                <Link 
                  href="/folx-stadl" 
                  className="text-bunny-light hover:text-bunny-blue transition-colors text-sm font-medium"
                  onClick={() => setIsMobileMenuOpen(false)}
                >
                  FOLX STADL
                </Link>
                <Link 
                  href="/geschichte-lied" 
                  className="text-bunny-light hover:text-bunny-blue transition-colors text-sm font-medium"
                  onClick={() => setIsMobileMenuOpen(false)}
                >
                  DIE GESCHICHTE DES LIEDES
                </Link>
                <Link 
                  href="/gipfelstammtisch" 
                  className="text-bunny-light hover:text-bunny-blue transition-colors text-sm font-medium"
                  onClick={() => setIsMobileMenuOpen(false)}
                >
                  GIPFELSTAMMTISCH
                </Link>
              </nav>
              
              <div className="relative">
                <Input
                  type="search"
                  placeholder="Search..."
                  value={searchQuery}
                  onChange={(e) => setSearchQuery(e.target.value)}
                  className="bg-white border border-gray-300 rounded-lg px-3 py-2 pl-9 text-sm text-gray-900 placeholder-gray-500 focus:outline-none focus:border-bunny-blue transition-colors w-full"
                />
                <Search className="absolute left-2.5 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
              </div>
            </div>
          </div>
        )}
      </div>

      <main className="w-full pt-8 pb-8 relative">
        <div className="container">
          <NetflixGrid
            videos={allVideos}
            isLoading={isLoading}
          />
        </div>
      </main>

      {/* Footer */}
      <footer className="bg-bunny-dark/90 border-t border-white/10 py-8 mt-12">
        <div className="container">
          <div className="grid grid-cols-1 md:grid-cols-4 gap-8 text-sm">
            {/* Company Info */}
            <div className="col-span-1">
              <div className="flex items-center space-x-2 mb-4">
                <div className="w-8 h-8 gradient-primary rounded-lg flex items-center justify-center">
                  <div className="w-0 h-0 border-l-[8px] border-l-white border-y-[6px] border-y-transparent ml-1"></div>
                </div>
                <h3 className="text-xl font-bold text-white">go4.video</h3>
              </div>
              <p className="text-bunny-muted leading-relaxed">
                Professionelle Video-Streaming-Plattform für österreichische Volksmusik und Unterhaltung.
              </p>
            </div>

            {/* Navigation */}
            <div className="col-span-1">
              <h4 className="text-white font-semibold mb-4">Navigation</h4>
              <ul className="space-y-2">
                <li><Link href="/" className="text-bunny-muted hover:text-white transition-colors">Home</Link></li>
                <li><Link href="/folx-stadl" className="text-bunny-muted hover:text-white transition-colors">FOLX STADL</Link></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">GDL Video</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Live Streams</a></li>
              </ul>
            </div>

            {/* Categories */}
            <div className="col-span-1">
              <h4 className="text-white font-semibold mb-4">Kategorien</h4>
              <ul className="space-y-2">
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Volksmusik</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Dokumentationen</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Interviews</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Shows</a></li>
              </ul>
            </div>

            {/* Support */}
            <div className="col-span-1">
              <h4 className="text-white font-semibold mb-4">Support</h4>
              <ul className="space-y-2">
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Hilfe & FAQ</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Kontakt</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Datenschutz</a></li>
                <li><a href="#" className="text-bunny-muted hover:text-white transition-colors">Impressum</a></li>
              </ul>
            </div>
          </div>

          {/* Copyright */}
          <div className="border-t border-white/10 mt-8 pt-6 text-center">
            <p className="text-bunny-muted text-sm">
              © 2025 go4.video. Alle Rechte vorbehalten. | Powered by Bunny.net CDN
            </p>
          </div>
        </div>
      </footer>
    </div>
  );
}