import { NextRequest, NextResponse } from 'next/server';
import fs from 'fs/promises';
import path from 'path';

const DATA_DIR = path.join(process.cwd(), 'data');
const HOUSES_FILE = path.join(DATA_DIR, 'houses.json');
const USERS_FILE = path.join(DATA_DIR, 'users.json');

interface House {
  id: string;
  owner: string;
  title: string;
  description: string;
  price: number;
  district: string;
  address: string;
  phone: string;
  images: string[];
  createdAt: string;
}

interface User {
  id: string;
  username: string;
  token: string;
}

async function readFile<T>(filePath: string, defaultValue: T): Promise<T> {
  try {
    const data = await fs.readFile(filePath, 'utf-8');
    return JSON.parse(data);
  } catch {
    return defaultValue;
  }
}

async function getUserFromToken(token: string): Promise<User | null> {
  const users = await readFile<User[]>(USERS_FILE, []);
  return users.find(u => u.token === token) || null;
}

async function readHouses(): Promise<House[]> {
  return readFile<House[]>(HOUSES_FILE, []);
}

export async function GET(request: NextRequest) {
  try {
    const token = request.cookies.get('auth_token')?.value;
    
    if (!token) {
      return NextResponse.json({ error: '请先登录' }, { status: 401 });
    }
    
    const user = await getUserFromToken(token);
    if (!user) {
      return NextResponse.json({ error: '用户不存在' }, { status: 401 });
    }
    
    const houses = await readHouses();
    const myHouses = houses
      .filter(h => h.owner === user.username)
      .sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
    
    return NextResponse.json({ houses: myHouses });
  } catch (error) {
    console.error('Get my houses error:', error);
    return NextResponse.json({ error: '获取房屋列表失败' }, { status: 500 });
  }
}