import { NextRequest, NextResponse } from 'next/server';
import crypto from 'crypto';
import pool from '@/lib/db';

export async function GET(request: NextRequest) {
  let connection;
  try {
    const { searchParams } = new URL(request.url);
    const district = searchParams.get('district');
    const keyword = searchParams.get('keyword');
    
    connection = await pool.getConnection();
    
    let sql = "SELECT * FROM houses WHERE status = 'approved'";
    const params: any[] = [];
    
    if (district && district !== '全部') {
      sql += ' AND district = ?';
      params.push(district);
    }
    
    if (keyword) {
      sql += ' AND (title LIKE ? OR address LIKE ? OR description LIKE ?)';
      const kw = `%${keyword}%`;
      params.push(kw, kw, kw);
    }
    
    sql += ' ORDER BY created_at DESC';
    
    const [rows] = await connection.query<any[]>(sql, params);
    
    const houses = rows.map((row: any) => ({
      id: row.id,
      owner: row.owner,
      title: row.title,
      description: row.description,
      price: row.price,
      district: row.district,
      address: row.address,
      phone: row.phone,
      images: row.images ? JSON.parse(row.images) : [],
      createdAt: row.created_at
    }));
    
    connection.release();
    return NextResponse.json({ houses });
  } catch (error) {
    console.error('Get houses error:', error);
    return NextResponse.json({ error: '获取房屋列表失败' }, { status: 500 });
  } finally {
    if (connection) connection.release();
  }
}

export async function POST(request: NextRequest) {
  let connection;
  try {
    const token = request.cookies.get('auth_token')?.value;
    
    if (!token) {
      return NextResponse.json({ error: '请先登录' }, { status: 401 });
    }
    
    connection = await pool.getConnection();
    
    const [users] = await connection.query<any[]>('SELECT username FROM users WHERE token = ?', [token]);
    
    if (users.length === 0) {
      connection.release();
      return NextResponse.json({ error: '用户不存在' }, { status: 401 });
    }
    
    const body = await request.json();
    const { title, description, price, district, address, phone, images } = body;
    
    if (!title || !price || !district || !address || !phone) {
      connection.release();
      return NextResponse.json({ error: '请填写完整信息' }, { status: 400 });
    }
    
    const id = crypto.randomUUID();
    await connection.query(
      'INSERT INTO houses (id, owner, title, description, price, district, address, phone, images, status, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
      [id, users[0].username, title, description || '', Number(price), district, address, phone, JSON.stringify(images || []), 'pending', new Date()]
    );
    
    const house = {
      id,
      owner: users[0].username,
      title,
      description: description || '',
      price: Number(price),
      district,
      address,
      phone,
      images: images || [],
      status: 'pending',
      createdAt: new Date()
    };
    
    connection.release();
    return NextResponse.json({ success: true, house });
  } catch (error) {
    console.error('Create house error:', error);
    return NextResponse.json({ error: '创建房屋失败' }, { status: 500 });
  } finally {
    if (connection) connection.release();
  }
}