const express = require('express');
const router = express.Router();
const authController = require('../../controllers/user/auth');
const Post = require('../../models/Post');
const Comment = require('../../models/Comment');
const User = require('../../models/User');


// 文章详情页
// 文章详情页
router.get('/posts/:id', async (req, res) => {
  try {
    const post = await Post.findOne({ _id: req.params.id, isPublished: true });
    if (!post) {
      return res.status(404).render('user/info', {
        post: null,
        user: req.session.user || null,
        message: '文章不存在或已被删除'
      });
    }
    res.render('user/info', {
      post: post,  // 确保传递的是查询到的文章
      user: req.session.user || null
    });
  } catch (err) {
    console.error('获取文章详情出错:', err);
    res.status(500).render('user/info', {
      post: null,
      user: req.session.user || null,
      message: '服务器错误，请稍后再试'
    });
  }
});

// 注册页面
router.get('/register', (req, res) => {
  res.render('user/register', { error: null });
});
// 注册提交
router.post('/register', authController.register);

// 登录页面
router.get('/login', (req, res) => {
  res.render('user/login', { error: null });
});
// 登录提交
router.post('/login', authController.login);

// 登出
router.get('/logout', authController.logout);

// 获取用户资料（包括收藏列表）
router.get('/user/profile', async (req, res) => {
  if (!req.session.user) {
    return res.status(401).json({ success: false, message: '请先登录' });
  }
  try {
    const user = await User.findById(req.session.user._id).populate('favorites');
    res.json({ 
      success: true, 
      user: {
        _id: user._id,
        username: user.username,
        role: user.role
      },
      favorites: user.favorites || []
    });
  } catch (err) {
    console.error('获取用户资料失败:', err);
    res.status(500).json({ success: false, message: '获取用户资料失败' });
  }
});

// 收藏文章
router.post('/posts/:id/favorite', async (req, res) => {
  if (!req.session.user) return res.status(401).json({ success: false, message: '请先登录' });
  try {
    await User.findByIdAndUpdate(req.session.user._id, { $addToSet: { favorites: req.params.id } });
    res.json({ success: true });
  } catch (err) {
    res.status(500).json({ success: false, message: '收藏失败' });
  }
});
// 取消收藏
router.post('/posts/:id/unfavorite', async (req, res) => {
  if (!req.session.user) return res.status(401).json({ success: false, message: '请先登录' });
  try {
    await User.findByIdAndUpdate(req.session.user._id, { $pull: { favorites: req.params.id } });
    res.json({ success: true });
  } catch (err) {
    res.status(500).json({ success: false, message: '取消收藏失败' });
  }
});
// 获取评论列表
router.get('/posts/:id/comments', async (req, res) => {
  try {
    const comments = await Comment.find({ post: req.params.id }).populate('author', 'username').sort({ createdAt: -1 });
    res.json({ success: true, comments });
  } catch (err) {
    res.status(500).json({ success: false, message: '获取评论失败' });
  }
});
// 发表评论
router.post('/posts/:id/comments', async (req, res) => {
  if (!req.session.user) return res.status(401).json({ success: false, message: '请先登录' });
  const { content } = req.body;
  if (!content || !content.trim()) return res.status(400).json({ success: false, message: '评论内容不能为空' });
  try {
    const comment = new Comment({
      content,
      author: req.session.user._id,
      post: req.params.id
    });
    await comment.save();
    res.json({ success: true, comment });
  } catch (err) {
    res.status(500).json({ success: false, message: '发表评论失败' });
  }
});

// 用户个人中心页面
router.get('/userInfo', async (req, res) => {
  if (!req.session.user) {
    return res.redirect('/login');
  }
  try {
    const user = await User.findById(req.session.user._id).populate('favorites');
    // 获取用户所有评论
    const comments = await Comment.find({ author: req.session.user._id }).populate('post', 'title');
    res.render('user/userInfo', {
      user,
      favorites: user.favorites || [],
      comments: comments || []
    });
  } catch (err) {
    console.error('获取个人中心信息失败:', err);
    res.status(500).render('user/userInfo', { user: null, favorites: [], comments: [], error: '服务器错误' });
  }
});

// 修改密码
router.post('/user/changePassword', authController.changePassword);

module.exports = router;