const express = require('express');
const conversationsRouter = require('./conversations');
const chatRouter = require('./chat');

const router = express.Router();

// API版本信息
router.get('/', (req, res) => {
  res.json({
    success: true,
    data: {
      name: 'LLM Chat Website API',
      version: '1.0.0',
      description: '大语言模型聊天网站后端API',
      endpoints: {
        conversations: '/api/conversations',
        chat: '/api/chat',
        health: '/api/health'
      }
    },
    message: 'API服务正常运行'
  });
});

// 健康检查端点
router.get('/health', (req, res) => {
  res.json({
    success: true,
    data: {
      status: 'healthy',
      timestamp: new Date().toISOString(),
      uptime: process.uptime(),
      memory: process.memoryUsage(),
      version: process.version
    },
    message: '服务健康状态正常'
  });
});

// 挂载子路由
router.use('/conversations', conversationsRouter);
router.use('/chat', chatRouter);

// 404处理
router.use('*', (req, res) => {
  res.status(404).json({
    success: false,
    error: '接口不存在',
    message: `找不到请求的接口: ${req.method} ${req.originalUrl}`
  });
});

module.exports = router;