/**
 * 简化版request - 用于测试401跳转
 * 如果标准版本不工作，可以临时替换使用这个版本
 */
import axios from 'axios'
import type { InternalAxiosRequestConfig, AxiosResponse } from 'axios'
import { ElMessage } from 'element-plus'
import { getToken, getRefreshToken, setToken as saveToken } from '@/utils/auth'

// 获取基础 URL
const getBaseURL = () => {
  let url = import.meta.env.VITE_API_BASE_URL || 'http://localhost:8000'
  if (url.includes('localhost') && typeof window !== 'undefined' && window.location.hostname !== 'localhost' && window.location.hostname !== '127.0.0.1') {
    url = url.replace('localhost', window.location.hostname)
  }
  return url
}

// 创建axios实例
const request = axios.create({
  baseURL: getBaseURL(),
  timeout: 30000,
  headers: {
    'Content-Type': 'application/json'
  }
})

// 请求拦截器
request.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    const token = getToken()
    if (token && config.headers) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// 响应拦截器 - 简化版
request.interceptors.response.use(
  (response: AxiosResponse) => {
    // Token自动更新
    const newToken = response.headers['x-new-token']
    if (newToken) {
      const refreshToken = getRefreshToken()
      saveToken(newToken, refreshToken || undefined)
      console.log('[简化版] Token已自动刷新')
    }
    
    const { code, message } = response.data ?? {}
    if ((code === '000000' || code === 0) || code === 200 || typeof code === 'undefined') {
      return response.data
    }
    
    const errorMsg = message || '请求失败'
    if (!response.config.headers?.['Skip-Error-Message']) {
      ElMessage.error(errorMsg)
    }
    const businessError = new Error(errorMsg)
    // @ts-ignore
    businessError.code = code
    // @ts-ignore
    businessError.isBusinessError = true
    return Promise.reject(businessError)
  },
  (error) => {
    console.log('[简化版] 拦截器捕获错误:', error.response?.status)
    
    // 401错误 - 最简单的处理
    if (error.response?.status === 401) {
      console.log('[简化版] 检测到401，立即跳转')
      
      // 清除所有认证信息
      localStorage.clear()
      sessionStorage.clear()
      
      // 显示提示
      ElMessage.error('登录已过期，请重新登录')
      
      // 立即跳转
      window.location.href = '/login'
      
      // 阻止后续执行
      return new Promise(() => {})
    }
    
    // 其他错误
    const skipErrorMessage = error.config?.headers?.['Skip-Error-Message']
    if (error.response) {
      const { status, data } = error.response
      if (!skipErrorMessage) {
        if (status === 403) {
          ElMessage.error('权限不足')
        } else if (status === 404) {
          ElMessage.error('请求的资源不存在')
        } else if (status === 500) {
          ElMessage.error('服务器内部错误')
        } else {
          ElMessage.error(data?.message || '请求失败')
        }
      }
    } else {
      if (!skipErrorMessage) {
        ElMessage.error('网络连接失败')
      }
    }
    
    return Promise.reject(error)
  }
)

export default request