import { useQuery } from '@tanstack/react-query';
import { Link, useLocation } from 'wouter';
import { ArrowLeft, ChevronLeft, ChevronRight, Menu, X } from 'lucide-react';
import VideoCard from '@/components/video-card';
import BunnyVideoModal from '@/components/bunny-video-modal';
import { Button } from '@/components/ui/button';
import { useState } from 'react';
import type { Video } from '@shared/schema';
import { Input } from '@/components/ui/input';
import { Search } from 'lucide-react';

export default function GeschichteLiedPage() {
  const [selectedVideo, setSelectedVideo] = useState<Video | null>(null);
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [currentPage, setCurrentPage] = useState(1);
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
  const [searchQuery, setSearchQuery] = useState("");
  const [viewMode, setViewMode] = useState<"grid" | "list">("grid");
  const [, setLocation] = useLocation();
  const itemsPerPage = 10;

  const { data, isLoading } = useQuery<{videos: Video[], total: number}>({
    queryKey: ['/api/videos?limit=200'],
    select: (response) => response || { videos: [], total: 0 }
  });

  const videos = data?.videos || [];

  // Filter all Die Geschichte des Liedes videos
  const geschichteVideos = videos.filter(video => 
    video.title.includes("Die Geschichte des Liedes") || 
    video.title.includes("Geschichte des Liedes") ||
    video.title.includes("GESCHICHTE DES LIEDES")
  );

  // Pagination logic
  const totalPages = Math.ceil(geschichteVideos.length / itemsPerPage);
  const startIndex = (currentPage - 1) * itemsPerPage;
  const endIndex = startIndex + itemsPerPage;
  const currentVideos = geschichteVideos.slice(startIndex, endIndex);

  const handleVideoClick = (video: Video) => {
    // Navigate to individual video page instead of modal
    setLocation(`/video/${video.id}`);
  };

  const handleCloseModal = () => {
    setIsModalOpen(false);
    setSelectedVideo(null);
  };

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

  return (
    <div className="min-h-screen bg-bunny-dark text-white has-fixed-header">
      {/* 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 mt-3">
                <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-2 pl-10 text-sm text-gray-900 placeholder-gray-500 focus:outline-none focus:border-bunny-blue transition-colors w-full"
                />
                <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
              </div>
            </div>
          </div>
        )}
      </div>

      {/* Main Content */}
      <div className="container pt-8 pb-8">

        {/* Video List with Descriptions */}
        <div className="space-y-6">
          {currentVideos.map((video, index) => (
            <div key={video.id} className="bg-black/20 backdrop-blur-sm rounded-lg p-4">
              <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                {/* Video Card */}
                <div className="md:col-span-1">
                  <VideoCard
                    video={video}
                    onClick={handleVideoClick}
                    className="w-full hover:scale-102 transition-all duration-300 rounded-lg overflow-hidden"
                    hideOverlay={true}
                  />
                </div>
                
                {/* Video Description */}
                <div className="md:col-span-2 space-y-3">
                  <h3 className="text-xl font-bold text-white">{video.title}</h3>
                  <p className="text-bunny-light text-sm leading-relaxed">
                    {video.description || "Keine Beschreibung für diese Sendung verfügbar."}
                  </p>
                  <div className="flex items-center gap-4 text-xs text-bunny-muted">
                    <span>{Math.floor(video.duration / 60)}:{(video.duration % 60).toString().padStart(2, '0')} min</span>
                    <span>{video.views} Aufrufe</span>
                  </div>
                </div>
              </div>
            </div>
          ))}

          {geschichteVideos.length === 0 && (
            <div className="text-center py-16">
              <p className="text-bunny-muted text-lg">Keine "Die Geschichte des Liedes" Videos gefunden</p>
            </div>
          )}
        </div>

        {/* Bottom Pagination */}
        {totalPages > 1 && (
          <div className="mt-8 flex justify-center gap-2">
            <Button
              variant="outline"
              onClick={() => setCurrentPage(Math.max(1, currentPage - 1))}
              disabled={currentPage === 1}
              className="border-white/20 text-white hover:bg-white/10"
            >
              <ChevronLeft className="w-4 h-4" />
              Vorherige
            </Button>
            
            <div className="flex gap-1">
              {Array.from({ length: Math.min(totalPages, 5) }, (_, i) => {
                let pageNum;
                if (totalPages <= 5) {
                  pageNum = i + 1;
                } else if (currentPage <= 3) {
                  pageNum = i + 1;
                } else if (currentPage >= totalPages - 2) {
                  pageNum = totalPages - 4 + i;
                } else {
                  pageNum = currentPage - 2 + i;
                }
                
                return (
                  <Button
                    key={pageNum}
                    variant={currentPage === pageNum ? "default" : "outline"}
                    size="sm"
                    onClick={() => setCurrentPage(pageNum)}
                    className={currentPage === pageNum 
                      ? "bg-white text-black hover:bg-white/90" 
                      : "border-white/20 text-white hover:bg-white/10"
                    }
                  >
                    {pageNum}
                  </Button>
                );
              })}
            </div>
            
            <Button
              variant="outline"
              onClick={() => setCurrentPage(Math.min(totalPages, currentPage + 1))}
              disabled={currentPage === totalPages}
              className="border-white/20 text-white hover:bg-white/10"
            >
              Nächste
              <ChevronRight className="w-4 h-4" />
            </Button>
          </div>
        )}
      </div>

      {/* Video Modal */}
      {selectedVideo && (
        <BunnyVideoModal
          video={selectedVideo}
          isOpen={isModalOpen}
          onClose={handleCloseModal}
        />
      )}
    </div>
  );
}