"use client";
import React, { useState } from "react";
import { motion, AnimatePresence } from "motion/react";
import { ChevronRight, ChevronLeft, PlayCircle, ShieldCheck, X, Search, Clock, User } from "lucide-react";
import SafeImage from "./SafeImage";


import { videoService, Video } from "../lib/services/videoService";
import { useRouter } from 'next/navigation';
import VideoModalPlayer from "./VideoModalPlayer";

export default function VideosPage() {
  const router = useRouter();
  const [videos, setVideos] = useState<Video[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [selectedVideo, setSelectedVideo] = useState<Video | null>(null);
  const [search, setSearch] = useState("");

  React.useEffect(() => {
    setIsLoading(true);
    videoService.getVideos({ limit: 100 })
      .then((data) => {
        if (data && Array.isArray(data)) {
          setVideos(data);
        } else {
          setVideos([]);
        }
      })
      .catch((err) => {
        console.error('Failed to load videos:', err);
        setVideos([]);
      })
      .finally(() => {
        setIsLoading(false);
      });
  }, []);

  const filteredVideos = videos.filter(v => 
    (v.title || '').toLowerCase().includes(search.toLowerCase()) || 
    (v.doctor || '').toLowerCase().includes(search.toLowerCase()) ||
    (v.description || '').toLowerCase().includes(search.toLowerCase())
  );

  return (
    <div className="min-h-screen bg-medical-gray-900 pt-8 pb-20 px-4 font-vazir" dir="rtl">
      <div className="max-w-7xl mx-auto">
        {/* Header */}
        <div className="flex flex-col md:flex-row items-center justify-between mb-16 gap-6">
            <div className="text-right">
               <div className="inline-flex items-center gap-2 px-3 py-1 bg-canina-blue/10 text-canina-blue rounded-full text-[10px] font-black uppercase tracking-widest mb-4">
                  <PlayCircle className="w-3 h-3" />
                  Video Academy
               </div>
               <h1 className="text-4xl lg:text-6xl font-black text-white italic leading-tight">
                  آکادمی ویدئویی <span className="text-canina-blue">کنینا</span>
               </h1>
            </div>
            <button 
              onClick={() => router.push('/')}
              className="px-8 py-3 bg-white/5 border border-white/10 rounded-2xl text-white shadow-sm flex items-center gap-2 font-black hover:bg-white/10 transition-all font-vazir"
            >
              <span>بازگشت</span>
              <ChevronLeft className="w-5 h-5" />
            </button>
        </div>

        {/* Search Bar */}
        <div className="mb-12 relative max-w-2xl">
           <Search className="absolute right-6 top-1/2 -translate-y-1/2 text-white/30 w-5 h-5" />
           <input 
             type="text" 
             placeholder="جستجو در ویدئوهای آموزشی..."
             value={search}
             onChange={e => setSearch(e.target.value)}
             className="w-full bg-white/5 border border-white/10 rounded-[2rem] py-5 pr-14 pl-6 text-white outline-none focus:bg-white/10 transition-all font-bold"
           />
        </div>

        {/* Video Grid or Skeleton */}
        {isLoading ? (
          <div className="grid md:grid-cols-2 lg:grid-cols-3 gap-8">
            {[1, 2, 3, 4, 5, 6].map((i) => (
              <div key={i} className="animate-pulse space-y-4">
                <div className="aspect-video bg-white/5 rounded-[2.5rem] border border-white/5" />
                <div className="h-6 bg-white/5 rounded-xl w-3/4" />
                <div className="h-4 bg-white/5 rounded-xl w-1/2" />
              </div>
            ))}
          </div>
        ) : filteredVideos.length === 0 ? (
          <div className="bg-white/5 border border-white/10 rounded-[3rem] p-16 text-center text-white/50">
            <PlayCircle className="w-16 h-16 mx-auto mb-4 opacity-30 text-canina-blue" />
            <h3 className="text-xl font-bold text-white mb-2">ویدئویی یافت نشد</h3>
            <p className="text-sm font-medium">هیچ ویدئویی مطابق با جستجوی شما در آکادمی وجود ندارد.</p>
          </div>
        ) : (
          <div className="grid md:grid-cols-2 lg:grid-cols-3 gap-8">
            {filteredVideos.map((video, idx) => (
              <motion.div 
                key={video.id}
                initial={{ opacity: 0, y: 20 }}
                animate={{ opacity: 1, y: 0 }}
                transition={{ delay: idx * 0.1 }}
                className="group cursor-pointer"
                onClick={() => {
                  setSelectedVideo(video);
                  videoService.incrementViews(video.id);
                }}
              >
                <div className="relative aspect-video rounded-[2.5rem] overflow-hidden mb-6 shadow-2xl border border-white/5 bg-black/40">
                  <SafeImage 
                    src={video.thumbnail} 
                    alt={video.title}
                    className="w-full h-full"
                    imgClassName="object-cover group-hover:scale-110 transition-transform duration-700 opacity-60 group-hover:opacity-100"
                  />
                  <div className="absolute inset-0 flex items-center justify-center">
                    <div className="w-16 h-16 bg-canina-blue rounded-full flex items-center justify-center text-white shadow-2xl group-hover:scale-110 transition-transform">
                      <PlayCircle className="w-10 h-10" />
                    </div>
                  </div>
                  {video.duration && (
                    <div className="absolute bottom-4 right-4 bg-black/60 backdrop-blur-md text-white px-3 py-1 rounded-lg text-[10px] font-black">
                      {video.duration}
                    </div>
                  )}
                </div>
                <div className="px-4">
                  <h3 className="text-xl font-black text-white group-hover:text-canina-blue transition-colors mb-2 leading-tight">
                    {video.title}
                  </h3>
                  <div className="flex items-center gap-4 text-xs font-bold text-white/40">
                    <div className="flex items-center gap-1">
                      <User className="w-3 h-3" />
                      {video.doctor || 'کادر علمی کنینا'}
                    </div>
                    {video.duration && (
                      <div className="flex items-center gap-1">
                        <Clock className="w-3 h-3" />
                        <span>{video.duration}</span>
                      </div>
                    )}
                  </div>
                </div>
              </motion.div>
            ))}
          </div>
        )}
      </div>

      {/* Custom Feature-Rich Video Player Modal */}
      <VideoModalPlayer
        isOpen={!!selectedVideo}
        onClose={() => setSelectedVideo(null)}
        video={selectedVideo}
      />
    </div>
  );
}