src/pages/SeedList/SeedDetail/SeedDetail.jsx

import React, { useEffect, useState } from 'react';
import axios from 'axios';
import { useParams } from 'wouter';
import Header from '../../../components/Header';
import './SeedDetail.css';
import { useUser } from '../../../context/UserContext';
import SeedRating from './SeedRating';
import AuthButton from '../../../components/AuthButton';

const SeedDetail = () => {
  const params = useParams();
  const seed_id = params.id;

  const [seed, setSeed] = useState(null);
  const [coverImage, setCoverImage] = useState(null);
  const [error, setError] = useState(null);
  const [comments, setComments] = useState([]);
  const [newComment, setNewComment] = useState('');

  const { user } = useUser();

  const formatImageUrl = (url) => {
    if (!url) return '';
    const filename = url.split('/').pop();
    return `http://localhost:5011/uploads/torrents/${filename}`;
  };

  useEffect(() => {
    if (!seed_id) {
      setError('无效的种子ID');
      return;
    }

    const fetchSeedDetail = async () => {
      try {
        const res = await axios.post(`/seeds/info/${seed_id}`);
        if (res.data.code === 0) {
          const seedData = res.data.data;
          let cover = seedData.imageUrl;
          if (!cover && seedData.imgUrl) {
            const imgs = seedData.imgUrl
              .split(',')
              .map((i) => i.trim())
              .filter(Boolean);
            cover = imgs.length > 0 ? formatImageUrl(imgs[0]) : null;
          }
          setCoverImage(cover);
          setSeed(seedData);
          setError(null);
        } else {
          setError('未能获取种子信息');
        }
      } catch (err) {
        console.error('请求种子详情出错:', err);
        setError('获取种子详情失败');
      }
    };

    const fetchComments = async () => {
      try {
        const res = await axios.get(`/seeds/${seed_id}/comments`);
        if (res.data.code === 0) {
          setComments(res.data.data || []);
        } else {
          setComments([]);
        }
      } catch {
        setComments([]);
      }
    };

    fetchSeedDetail();
    fetchComments();
  }, [seed_id]);

  const handleDownload = async (seedId) => {
    if (!user || !user.userId) {
      alert('请先登录再下载种子文件');
      return;
    }

    try {
      const response = await axios.get(`/seeds/${seedId}/download`, {
        params: { passkey: user.userId },
        responseType: 'blob',
      });

      const blob = new Blob([response.data], { type: 'application/x-bittorrent' });
      const downloadUrl = URL.createObjectURL(blob);
      const a = document.createElement('a');
      a.href = downloadUrl;
      a.download = `${seedId}.torrent`;
      a.click();
      URL.revokeObjectURL(downloadUrl);
    } catch (error) {
      console.error('下载失败:', error);
      alert('下载失败，请稍后再试。');
    }
  };

  const handleCollect = async () => {
    if (!user || !user.userId) {
      alert('请先登录再收藏');
      return;
    }

    try {
      const res = await axios.post(`/seeds/${seed.id}/favorite-toggle`, null, {
        params: { user_id: user.userId },
      });

      if (res.data.code === 0) {
        alert('操作成功');
      } else {
        alert(res.data.msg || '操作失败');
      }
    } catch (err) {
      console.error('收藏失败:', err);
      alert('收藏失败，请稍后再试。');
    }
  };

  const handleAddComment = async () => {
    if (!user || !user.userId) {
      alert('请登录后发表评论');
      return;
    }

    if (newComment.trim()) {
      try {
        const res = await axios.post(`/seeds/${seed_id}/comments`, {
          user_id: user.userId,
          content: newComment,
        });

        if (res.data.code === 0) {
          setComments([...comments, { content: newComment, user: user.username || '匿名用户' }]);
          setNewComment('');
        } else {
          alert(res.data.msg || '评论失败');
        }
      } catch (err) {
        console.error('评论提交失败:', err);
        alert('评论失败，请稍后重试');
      }
    }
  };

  if (error) {
    return (
      <div className="seed-detail-page">
        <Header />
        <div className="seed-detail">
          <p className="error-text">{error}</p>
        </div>
      </div>
    );
  }

  if (!seed) {
    return (
      <div className="seed-detail-page">
        <Header />
        <div className="seed-detail">
          <p>加载中...</p>
        </div>
      </div>
    );
  }

  const tags = Array.isArray(seed.tags)
    ? seed.tags
    : typeof seed.tags === 'string'
    ? seed.tags.split(',').map((t) => t.trim())
    : [];

  const actors = Array.isArray(seed.actors)
    ? seed.actors
    : typeof seed.actors === 'string'
    ? seed.actors.split(',').map((a) => a.trim())
    : [];

  return (
    <div className="seed-detail-page">
      <Header />
      <div className="seed-detail">
        <h1>{seed.title}</h1>
        <div className="seed-header-container">
          <div className="seed-info">
            <div className="seed-basic-info">
              <p><strong>分类：</strong>{seed.category || '未知'}</p>
              <p><strong>发布时间：</strong>{seed.upload_time ? new Date(seed.upload_time).toLocaleString() : '未知'}</p>
              <p><strong>标签：</strong>{tags.join(' / ')}</p>
              <p><strong>简介：</strong>{seed.description || '无'}</p>
              <p><strong>大小：</strong>{seed.size || '未知'}</p>
              <p><strong>分辨率：</strong>{seed.resolution || '未知'}</p>
              <p><strong>片长：</strong>{seed.duration || '未知'}</p>
              <p><strong>地区：</strong>{seed.region || '未知'}</p>
              <p><strong>下载次数：</strong>{seed.downloads ?? 0}</p>
            </div>
            {(seed.category === '电影' || seed.category === '电视剧') && (
              <div className="seed-media-info">
                <p><strong>导演：</strong>{seed.director || '未知'}</p>
                <p><strong>编剧：</strong>{seed.writer || '未知'}</p>
                <p><strong>主演：</strong>{actors.join(' / ')}</p>
              </div>
            )}
          </div>
          <img
            src={coverImage || '/default-cover.png'}
            alt={seed.title}
            className="cover-image"
          />
        </div>

        <div className="action-buttons">
          <AuthButton roles={["cookie", "chocolate", "ice-cream"]} onClick={() => handleDownload(seed.id)}>
            下载
          </AuthButton>
          <AuthButton roles={["cookie", "chocolate", "ice-cream"]} onClick={handleCollect}>
            收藏
          </AuthButton>
          <SeedRating seedId={seed.id} />
        </div>


        <hr className="divider" />
        <h3>评论区</h3>
        <div className="comments-section">
          <div className="comments-list">
            {comments.length === 0 ? (
              <p className="no-comments">暂无评论</p>
            ) : (
              comments.map((comment, index) => (
                <div key={index} className="comment">
                  <p className="comment-user">{comment.user}</p>
                  <p className="comment-content">{comment.content}</p>
                </div>
              ))
            )}
          </div>
          <div className="add-comment-form">
            <textarea
              placeholder="输入你的评论..."
              value={newComment}
              onChange={(e) => setNewComment(e.target.value)}
            />
            <div className="comment-options">
              <button className="btn" onClick={handleAddComment}>发布评论</button>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};

export default SeedDetail;