import axios from 'axios'
import type {
  LoginRequest,
  LoginResponse,
  RegisterRequest,
  CaptchaResponse,
  ApiResponse,
  RefreshTokenRequest,
  ChangePasswordRequest,
  ForgotPasswordRequest,
  ResetPasswordRequest,
  UserInfo
} from '@/types/auth'

// 创建axios实例
const authApi = axios.create({
  baseURL: '/api/auth',
  timeout: 10000,
  headers: {
    'Content-Type': 'application/json'
  }
})

// 请求拦截器
authApi.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('token')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// 响应拦截器
authApi.interceptors.response.use(
  (response) => {
    return response.data
  },
  (error) => {
    if (error.response?.status === 401) {
      // token过期，清除本地存储并跳转到登录页
      localStorage.removeItem('token')
      localStorage.removeItem('userInfo')
      window.location.href = '/login'
    }
    return Promise.reject(error.response?.data || error)
  }
)

export const authService = {
  // 获取验证码
  async getCaptcha(): Promise<CaptchaResponse> {
    const response: ApiResponse<CaptchaResponse> = await authApi.get('/captcha')
    return response.data
  },

  // 用户登录
  async login(data: LoginRequest): Promise<ApiResponse<LoginResponse>> {
    return await authApi.post('/login', data)
  },

  // 用户注册
  async register(data: RegisterRequest): Promise<ApiResponse<UserInfo>> {
    return await authApi.post('/register', data)
  },

  // 刷新token
  async refreshToken(data: RefreshTokenRequest): Promise<ApiResponse<LoginResponse>> {
    return await authApi.post('/refresh-token', data)
  },

  // 用户登出
  async logout(): Promise<ApiResponse<void>> {
    return await authApi.post('/logout')
  },

  // 获取用户信息
  async getUserInfo(): Promise<ApiResponse<UserInfo>> {
    return await authApi.get('/user-info')
  },

  // 修改密码
  async changePassword(data: ChangePasswordRequest): Promise<ApiResponse<void>> {
    return await authApi.post('/change-password', data)
  },

  // 忘记密码
  async forgotPassword(data: ForgotPasswordRequest): Promise<ApiResponse<void>> {
    return await authApi.post('/forgot-password', data)
  },

  // 重置密码
  async resetPassword(data: ResetPasswordRequest): Promise<ApiResponse<void>> {
    return await authApi.post('/reset-password', data)
  },

  // 验证token有效性
  async validateToken(): Promise<ApiResponse<boolean>> {
    return await authApi.get('/validate-token')
  },

  // 检查账号是否存在
  async checkAccount(account: string): Promise<ApiResponse<boolean>> {
    return await authApi.get(`/check-account?account=${account}`)
  }
}

// 工具函数
export const authUtils = {
  // 获取token
  getToken(): string | null {
    return localStorage.getItem('token')
  },

  // 设置token
  setToken(token: string): void {
    localStorage.setItem('token', token)
  },

  // 移除token
  removeToken(): void {
    localStorage.removeItem('token')
    localStorage.removeItem('userInfo')
  },

  // 获取用户信息
  getUserInfo(): UserInfo | null {
    const userInfo = localStorage.getItem('userInfo')
    return userInfo ? JSON.parse(userInfo) : null
  },

  // 设置用户信息
  setUserInfo(userInfo: UserInfo): void {
    localStorage.setItem('userInfo', JSON.stringify(userInfo))
  },

  // 检查是否已登录
  isLoggedIn(): boolean {
    return !!this.getToken()
  },

  // 清除所有认证信息
  clearAuth(): void {
    this.removeToken()
  }
}