/**
 * Axios 基础配置
 */
import axios, { type AxiosInstance, type AxiosRequestConfig, type AxiosResponse, type InternalAxiosRequestConfig } from 'axios'
import { message } from 'ant-design-vue'
import type { ApiResponse } from '@/types'

// 创建axios实例
const service: AxiosInstance = axios.create({
  baseURL: import.meta.env.VITE_API_BASE_URL || '/api',
  timeout: 30000,
  headers: {
    'Content-Type': 'application/json'
  }
})

// 请求拦截器
service.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    // 从localStorage获取token
    const token = localStorage.getItem('token')
    if (token && config.headers) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    console.error('请求错误:', error)
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (response: AxiosResponse<ApiResponse>) => {
    const res = response.data
    
    // 根据业务状态码判断请求是否成功
    if (res.code === 200 || res.success) {
      return response
    }
    
    // 处理业务错误
    message.error(res.message || '请求失败')
    
    // 处理特定错误码
    if (res.code === 401) {
      // token过期或未授权，跳转登录
      localStorage.removeItem('token')
      window.location.href = '/login'
    }
    
    return Promise.reject(new Error(res.message || '请求失败'))
  },
  (error) => {
    console.error('响应错误:', error)
    
    // 处理HTTP错误
    let errorMessage = '网络错误，请稍后重试'
    if (error.response) {
      const { status } = error.response
      switch (status) {
        case 400:
          errorMessage = '请求参数错误'
          break
        case 401:
          errorMessage = '未授权，请重新登录'
          localStorage.removeItem('token')
          window.location.href = '/login'
          break
        case 403:
          errorMessage = '拒绝访问'
          break
        case 404:
          errorMessage = '请求资源不存在'
          break
        case 500:
          errorMessage = '服务器内部错误'
          break
        default:
          errorMessage = `请求失败(${status})`
      }
    } else if (error.code === 'ECONNABORTED') {
      errorMessage = '请求超时，请稍后重试'
    }
    
    message.error(errorMessage)
    return Promise.reject(error)
  }
)

// 封装请求方法
export const request = {
  get<T = unknown>(url: string, config?: AxiosRequestConfig): Promise<AxiosResponse<ApiResponse<T>>> {
    return service.get(url, config)
  },
  
  post<T = unknown>(url: string, data?: unknown, config?: AxiosRequestConfig): Promise<AxiosResponse<ApiResponse<T>>> {
    return service.post(url, data, config)
  },
  
  put<T = unknown>(url: string, data?: unknown, config?: AxiosRequestConfig): Promise<AxiosResponse<ApiResponse<T>>> {
    return service.put(url, data, config)
  },
  
  delete<T = unknown>(url: string, config?: AxiosRequestConfig): Promise<AxiosResponse<ApiResponse<T>>> {
    return service.delete(url, config)
  }
}

export default service