import axios from 'axios';

const API_URL = process.env.REACT_APP_API_URL || 'http://localhost:5000/api';

export const api = axios.create({
  baseURL: API_URL,
  timeout: 10000,
  headers: {
    'Content-Type': 'application/json',
  },
});

// Request interceptor
api.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('token');
    if (token) {
      config.headers.Authorization = `Bearer ${token}`;
    }
    return config;
  },
  (error) => {
    return Promise.reject(error);
  }
);

// Response interceptor
api.interceptors.response.use(
  (response) => {
    return response;
  },
  (error) => {
    if (error.response?.status === 401) {
      localStorage.removeItem('token');
      window.location.href = '/login';
    }
    return Promise.reject(error);
  }
);

// API methods
export const authAPI = {
  login: (email, password) => api.post('/auth/login', { email, password }),
  register: (username, email, password) => api.post('/auth/register', { username, email, password }),
  getMe: () => api.get('/auth/me'),
  updateProfile: (updates) => api.put('/auth/profile', updates),
};

export const conversationAPI = {
  getConversations: (params = {}) => api.get('/conversations', { params }),
  getConversation: (id) => api.get(`/conversations/${id}`),
  createConversation: (title) => api.post('/conversations', { title }),
  updateConversation: (id, updates) => api.put(`/conversations/${id}`, updates),
  deleteConversation: (id) => api.delete(`/conversations/${id}`),
};

export const chatAPI = {
  sendMessage: (conversationId, content) => api.post('/chat/message', { conversationId, content }),
  getMessages: (conversationId, params = {}) => api.get(`/chat/messages/${conversationId}`, { params }),
  deleteMessage: (messageId) => api.delete(`/chat/message/${messageId}`),
};