import axios from 'axios';
import { AuthResponse, LoginData, RegisterData, Message } from '../types';

const API_BASE_URL = import.meta.env.VITE_API_URL || 'http://localhost:5000';

const api = axios.create({
  baseURL: `${API_BASE_URL}/api`,
  headers: {
    'Content-Type': 'application/json',
  },
});

// 请求拦截器 - 添加认证token
api.interceptors.request.use((config) => {
  const token = localStorage.getItem('token');
  if (token) {
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

// 响应拦截器 - 处理认证错误
api.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 401) {
      localStorage.removeItem('token');
      localStorage.removeItem('user');
      window.location.href = '/login';
    }
    return Promise.reject(error);
  }
);

export const authAPI = {
  login: async (data: LoginData): Promise<AuthResponse> => {
    const response = await api.post('/login', data);
    return response.data;
  },

  register: async (data: RegisterData): Promise<AuthResponse> => {
    const response = await api.post('/register', data);
    return response.data;
  },
};

export const messageAPI = {
  getMessages: async (room: string = 'general', limit: number = 50): Promise<Message[]> => {
    const response = await api.get('/messages', {
      params: { room, limit }
    });
    return response.data;
  },
};

export default api;