import axios, { AxiosInstance, AxiosRequestConfig, AxiosResponse, InternalAxiosRequestConfig } from 'axios'
import { getApiBaseUrl, getTimeout } from '../config'
import { message } from 'antd'

const apiBaseUrl = getApiBaseUrl()
const timeout = getTimeout()

const axiosInstance: AxiosInstance = axios.create({
  baseURL: apiBaseUrl,
  timeout: timeout,
  headers: {
    'Content-Type': 'application/json',
  },
})

axiosInstance.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    const token = localStorage.getItem('token')
    if (token && config.headers) {
      config.headers.Authorization = `Bearer ${token}`
    }
    console.log(`[API Request] ${config.method?.toUpperCase()} ${config.url}`)
    return config
  },
  (error) => {
    console.error('[API Request Error]', error)
    return Promise.reject(error)
  }
)

axiosInstance.interceptors.response.use(
  (response: AxiosResponse) => {
    console.log(`[API Response] ${response.config.method?.toUpperCase()} ${response.config.url}`, response.data)
    return response
  },
  (error) => {
    console.error('[API Response Error]', error)
    
    if (error.response) {
      const { status, data } = error.response
      
      switch (status) {
        case 401:
          message.error('认证失败，请重新登录')
          localStorage.removeItem('token')
          window.location.href = '/login'
          break
        case 403:
          message.error('没有权限访问该资源')
          break
        case 404:
          message.error('请求的资源不存在')
          break
        case 500:
          message.error('服务器内部错误')
          break
        default:
          message.error(data?.message || `请求失败 (${status})`)
      }
    } else if (error.request) {
      message.error('网络连接失败，请检查网络')
    } else {
      message.error('请求配置错误')
    }
    
    return Promise.reject(error)
  }
)

export interface ApiResponse<T = any> {
  code: number
  msg: string
  data: T
}

export const request = {
  get<T = any>(url: string, config?: AxiosRequestConfig): Promise<ApiResponse<T>> {
    return axiosInstance.get(url, config).then((res) => res.data)
  },
  
  post<T = any>(url: string, data?: any, config?: AxiosRequestConfig): Promise<ApiResponse<T>> {
    return axiosInstance.post(url, data, config).then((res) => res.data)
  },
  
  put<T = any>(url: string, data?: any, config?: AxiosRequestConfig): Promise<ApiResponse<T>> {
    return axiosInstance.put(url, data, config).then((res) => res.data)
  },
  
  delete<T = any>(url: string, config?: AxiosRequestConfig): Promise<ApiResponse<T>> {
    return axiosInstance.delete(url, config).then((res) => res.data)
  },
  
  patch<T = any>(url: string, data?: any, config?: AxiosRequestConfig): Promise<ApiResponse<T>> {
    return axiosInstance.patch(url, data, config).then((res) => res.data)
  },
}

export default axiosInstance