// src/components/NotebookPage.jsx

import React, { useState, useEffect } from 'react'
import { useNavigate } from 'react-router-dom'
import { fetchPosts, deletePost } from '../api/posts_wzy'
import { getUserInfo } from '../utils/auth'   // ← 导入 getUserInfo
import '../style/NotebookPage.css'

export default function NotebookPage() {
  const navigate = useNavigate()
  const [posts, setPosts]     = useState([])
  const [loading, setLoading] = useState(true)
  const [error, setError]     = useState(null)

  // 从 auth 获取当前用户信息
  const userInfo = getUserInfo()
  const currentUserId = userInfo?.id

  useEffect(() => {
    if (!currentUserId) {
      setError('未获取到用户信息，无法加载帖子。')
      setLoading(false)
      return
    }

    async function load() {
      try {
        // GET /posts?user_id=currentUserId
        const list = await fetchPosts(currentUserId)
        setPosts(list)
      } catch (e) {
        setError(e.message)
      } finally {
        setLoading(false)
      }
    }
    load()
  }, [currentUserId])

  async function handleDelete(id) {
    if (!window.confirm('确定要删除该帖子吗？')) return
    try {
      await deletePost(id)
      setPosts(posts.filter(p => p.id !== id))
      alert('删除成功')
    } catch (e) {
      alert('删除失败：' + e.message)
    }
  }

  function handleEdit(id) {
    navigate(`/posts/edit/${id}`)
  }

  if (loading) return <p>加载中…</p>
  if (error)   return <p className="error">加载失败：{error}</p>

  return (
    <div className="notebook-page">
      <h2>我的帖子管理</h2>
      {posts.length === 0 ? (
        <p>暂无帖子</p>
      ) : (
        <table className="post-table">
          <thead>
            <tr>
              <th>ID</th>
              <th>标题</th>
              <th>状态</th>
              <th>创建时间</th>
              <th>操作</th>
            </tr>
          </thead>
          <tbody>
            {posts.map(p => (
              <tr key={p.id}>
                <td>{p.id}</td>
                <td>{p.title}</td>
                <td>{p.status}</td>
                <td>{new Date(p.created_at).toLocaleString()}</td>
                <td>
                  <button onClick={() => handleEdit(p.id)}>编辑</button>
                  <button onClick={() => handleDelete(p.id)}>删除</button>
                </td>
              </tr>
            ))}
          </tbody>
        </table>
      )}
    </div>
  )
}