"use client";

import { useState, useEffect, useRef, useCallback } from 'react';
import { ArrowLeft, ListOrdered, Play, Loader2, Pause, MoreHorizontal, Edit2, Check, X, RefreshCw, Calendar, Clock, Eye, Heart, Share2, Video } from 'lucide-react';
import { useRouter, useSearchParams } from 'next/navigation';
import './style/create-to-video2.css';

import { createScriptEpisodeNew, getScriptEpisodeListNew, CreateScriptEpisodeRequest } from "@/api/script_episode";
import { EmptyStateAnimation } from '@/components/common/EmptyStateAnimation2';
import { ChatInputBox } from '@/components/common/ChatInputBox';


// ideaText已迁移到ChatInputBox组件中

export function CreateToVideo2() {
  const router = useRouter();
  const searchParams = useSearchParams();
  const projectId = searchParams.get('projectId') ? parseInt(searchParams.get('projectId')!) : 0;
  const [isClient, setIsClient] = useState(false);
  const containerRef = useRef<HTMLDivElement>(null);
  const [runTour, setRunTour] = useState(true);
  const [episodeId, setEpisodeId] = useState<number>(0);
  const [generatedVideoList, setGeneratedVideoList] = useState<any[]>([]);
  const [projectName, setProjectName] = useState('默认名称');
  const [episodeList, setEpisodeList] = useState<any[]>([]);
  const [currentPage, setCurrentPage] = useState(1);
  const [totalPage, setTotalPage] = useState(1);
  const [limit, setLimit] = useState(12);
  const [isLoading, setIsLoading] = useState(false);
  const [hasMore, setHasMore] = useState(true);
  const [isLoadingMore, setIsLoadingMore] = useState(false);
  const scrollContainerRef = useRef<HTMLDivElement>(null);
  const [userId, setUserId] = useState<number>(0);

  // 在客户端挂载后读取localStorage
  useEffect(() => {
    if (typeof window !== 'undefined') {
      const currentUser = JSON.parse(localStorage.getItem('currentUser') || '{}');
      console.log('currentUser', currentUser);
      setUserId(currentUser.id);
      const savedProjectName = localStorage.getItem('projectName');
      if (savedProjectName) {
        setProjectName(savedProjectName);
      }
      getEpisodeList(currentUser.id);
    }
  }, []);

  // 获取剧集列表
  const getEpisodeList = async (userId: number) => {
    if (isLoading || isLoadingMore) return;
    console.log('getEpisodeList', userId);

    setIsLoading(true);

    try {
      const params = {
        user_id: String(userId),
      };

      const episodeListResponse = await getScriptEpisodeListNew(params);
      console.log('episodeListResponse', episodeListResponse);

      if (episodeListResponse.code === 0) {
        setEpisodeList(episodeListResponse.data.movie_projects);
        // 每一项 有
        // final_video_url: "", // 生成的视频地址
        // last_message: "",
        // name: "After the Flood", // 剧集名称
        // project_id: "9c34fcc4-c8d8-44fc-879e-9bd56f608c76", // 剧集ID
        // status: "INIT", // 剧集状态 INIT 初始化
        // step: "INIT" // 剧集步骤 INIT 初始化
      }

    } catch (error) {
      console.error('Failed to fetch episode list:', error);
    } finally {
      setIsLoading(false);
      setIsLoadingMore(false);
    }
  };

  // 视频上传和创建功能已迁移到ChatInputBox组件中

  // 所有视频工具相关的函数和配置已迁移到ChatInputBox组件中

  // 检查是否需要显示引导
  useEffect(() => {
    if (typeof window !== 'undefined') {
      const hasCompletedTour = localStorage.getItem('hasCompletedTour');
      if (hasCompletedTour) {
        setRunTour(false);
      }
    }
  }, []);

  useEffect(() => {
    setIsClient(true);
  }, []);

  // 渲染剧集卡片
  const renderEpisodeCard = (episode: any) => {
    return (
      <div
        key={episode.project_id}
        className="group relative bg-white/[0.08] backdrop-blur-[20px] border border-white/[0.12] rounded-[12px] overflow-hidden hover:bg-white/[0.12] transition-all duration-300 hover:shadow-[0_8px_32px_rgba(0,0,0,0.4)] cursor-pointer"
        onClick={() => router.push(`/create/work-flow?episodeId=${episode.project_id}`)}
      >
        {/* 视频缩略图 */}
        <div className="relative h-[180px] bg-gradient-to-br from-purple-500/20 to-blue-500/20 overflow-hidden">
          {episode.final_video_url ? (
            <video
              src={episode.final_video_url}
              className="w-full h-full object-cover"
              muted
              loop
              preload="none"
              poster={`${episode.final_video_url}?vframe/jpg/offset/1`}
              onMouseEnter={(e) => (e.target as HTMLVideoElement).play()}
              onMouseLeave={(e) => (e.target as HTMLVideoElement).pause()}
            />
          ) : (
            <div className="flex items-center justify-center h-full">
              <Video className="w-12 h-12 text-white/30" />
            </div>
          )}

          {/* 播放按钮覆盖 */}
          <div className="absolute inset-0 bg-black/20 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity duration-300">
            <div className="w-12 h-12 bg-white/20 backdrop-blur-sm rounded-full flex items-center justify-center">
              <Play className="w-6 h-6 text-white ml-1" />
            </div>
          </div>

          {/* 状态标签 */}
          <div className="absolute top-3 left-3">
            <span className={`px-2 py-1 rounded-full text-xs font-medium ${
              episode.status === 'COMPLETED' ? 'bg-green-500/80 text-white' :
              episode.status !== 'COMPLETED' ? 'bg-yellow-500/80 text-white' :
              'bg-gray-500/80 text-white'
            }`}>
              {episode.status === 'COMPLETED' ? 'finished' : 'processing'}
            </span>
          </div>

          {/* 时长标签 */}
          {episode.duration && (
            <div className="absolute bottom-3 right-3">
              <span className="px-2 py-1 bg-black/60 backdrop-blur-sm rounded text-xs text-white">
                {episode.duration}
              </span>
            </div>
          )}
        </div>

        {/* 内容区域 */}
        <div className="p-4">
          <h3 className="text-white font-medium text-sm mb-2 line-clamp-2 group-hover:text-blue-300 transition-colors">
            {episode.name || episode.title || 'Unnamed episode'}
          </h3>

          {/* 元数据 */}
          <div className="flex items-center justify-between text-xs text-white/40">
            <div className="flex items-center gap-2">
              <Calendar className="w-3 h-3" />
              <span>{new Date(episode.created_at).toLocaleDateString()}</span>
            </div>

            <div className="flex items-center gap-3">

              <div className="flex items-center gap-1">
                <Clock className="w-3 h-3" />
                <span>{new Date(episode.updated_at).toLocaleTimeString([], {hour: '2-digit', minute:'2-digit'})}</span>
              </div>
            </div>
          </div>
        </div>

        {/* 操作按钮 */}
        <div className="absolute top-3 right-3 opacity-0 group-hover:opacity-100 transition-opacity duration-300">
          <div className="flex gap-2">
            <button className="w-8 h-8 bg-white/20 backdrop-blur-sm rounded-full flex items-center justify-center hover:bg-white/30 transition-colors">
              <Share2 className="w-4 h-4 text-white" />
            </button>
          </div>
        </div>
      </div>
    );
  };

  return (
    <>
      <div className="container mx-auto h-[calc(100vh-6rem)] flex flex-col absolute top-[4rem] left-0 right-0 px-[1rem]">
        {/* 优化后的主要内容区域 */}
        <div className="flex-1 min-h-0">
          <div
            ref={scrollContainerRef}
            className="h-full overflow-y-auto custom-scrollbar"
            style={{
              scrollbarWidth: 'thin',
              scrollbarColor: 'rgba(255,255,255,0.1) transparent'
            }}
          >
            {isLoading && episodeList.length === 0 ? (
              /* 优化的加载状态 */
              <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 2xl:grid-cols-5 gap-6 pb-6">
                {[...Array(10)].map((_, index) => (
                  <div
                    key={index}
                    className="bg-white/[0.05] backdrop-blur-[20px] border border-white/[0.08] rounded-2xl overflow-hidden animate-pulse"
                  >
                    <div className="h-[200px] bg-gradient-to-br from-white/[0.08] to-white/[0.04]">
                      <div className="h-full bg-white/[0.06] animate-pulse"></div>
                    </div>
                    <div className="p-5">
                      <div className="h-4 bg-white/[0.08] rounded-lg mb-3 animate-pulse"></div>
                      <div className="h-3 bg-white/[0.06] rounded-lg mb-4 w-3/4 animate-pulse"></div>
                      <div className="flex justify-between">
                        <div className="h-3 bg-white/[0.06] rounded-lg w-20 animate-pulse"></div>
                        <div className="h-3 bg-white/[0.06] rounded-lg w-16 animate-pulse"></div>
                      </div>
                    </div>
                  </div>
                ))}
              </div>
            ) : episodeList.length > 0 ? (
              /* 优化的剧集网格 */
              <div className="pb-8">
                <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 2xl:grid-cols-5 gap-6">
                  {episodeList.map(renderEpisodeCard)}
                </div>

                {/* 加载更多指示器 */}
                {isLoadingMore && (
                  <div className="flex justify-center py-12">
                    <div className="flex items-center gap-3 px-6 py-3 bg-white/[0.05] backdrop-blur-[20px] border border-white/[0.08] rounded-xl">
                      <Loader2 className="w-5 h-5 animate-spin text-blue-400" />
                      <span className="text-white/70 font-medium">Loading more episodes...</span>
                    </div>
                  </div>
                )}

                {/* 到底提示 */}
                {!hasMore && episodeList.length > 0 && (
                  <div className="flex justify-center py-12">
                    <div className="text-center">
                      <div className="w-12 h-12 bg-white/[0.05] backdrop-blur-[20px] border border-white/[0.08] rounded-xl flex items-center justify-center mx-auto mb-3">
                        <Check className="w-6 h-6 text-green-400" />
                      </div>
                      <p className="text-white/50 text-sm">All episodes loaded</p>
                    </div>
                  </div>
                )}
              </div>
            ) : (
              <></>
            )}
          </div>
        </div>
      </div>

      {/* 视频工具组件 - 使用独立组件 */}
      <ChatInputBox />

      {episodeList.length === 0 && !isLoading && (
        <div className='h-full flex flex-col items-center fixed top-[4rem] left-0 right-0 bottom-0'>
          <EmptyStateAnimation className='' />
        </div>
      )}
    </>
  );
}