import axios, { AxiosResponse, AxiosRequestConfig, Axios, AxiosError, InternalAxiosRequestConfig } from 'axios'
import { RequestHttpHeaderEnum, ResultEnum, ModuleTypeEnum } from '@/enums/httpEnum'
import { PageEnum, ErrorPageNameMap } from '@/enums/pageEnum'
import { StorageEnum } from '@/enums/storageEnum'
import { axiosPre } from '@/settings/httpSetting'
import { SystemStoreEnum, SystemStoreUserInfoEnum } from '@/store/modules/systemStore/systemStore.d'
import { redirectErrorPage, getLocalStorage, routerTurnByName, isPreview } from '@/utils'
import { fetchAllowList, ftsList } from './axios.config'
import includes from 'lodash/includes'

export interface MyResponseType<T> {
  code: ResultEnum
  data?: T
  details?: T
  message: string
  timeseq?: number
}

export interface MyRequestInstance extends Axios {
  <T = any>(config: AxiosRequestConfig): Promise<MyResponseType<T>>
}

const axiosInstance = axios.create({
  // iframe 嵌入模式：直接请求后端地址，不使用代理
  baseURL: `${import.meta.env.PROD ? import.meta.env.VITE_PRO_PATH : import.meta.env.VITE_DEV_PATH}${axiosPre}`,
  timeout: ResultEnum.TIMEOUT
}) as unknown as MyRequestInstance

axiosInstance.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    // fts 接口特殊处理：使用完整路径，不添加 /Visual/v1 前缀
    if (config.url && includes(ftsList, config.url)) {
      const baseUrl = import.meta.env.PROD ? import.meta.env.VITE_PRO_PATH : import.meta.env.VITE_DEV_PATH
      config.baseURL = baseUrl
    }
    
    // 获取 token 并添加到所有请求
    const info = getLocalStorage(StorageEnum.GO_SYSTEM_STORE)
    if (info) {
      const userInfo = info[SystemStoreEnum.USER_INFO]
      if (userInfo && userInfo[SystemStoreUserInfoEnum.USER_TOKEN]) {
        config.headers['authorization'] = userInfo[SystemStoreUserInfoEnum.USER_TOKEN]
      }
    }
    
    return config
  },
  (err: AxiosError) => {
    Promise.reject(err)
  }
)

// 响应拦截器
axiosInstance.interceptors.response.use(
  (res: AxiosResponse) => {
    // 统一处理后台返回 details 字段的情况，将其转换为 data 字段
    const { code, details, message } = res.data as { code: number; details?: any; message?: string }
    const responseData = details !== undefined 
      ? { code, message, data: details } 
      : res.data

    // 预览页面错误不进行处理
    if (isPreview()) {
      return Promise.resolve(responseData)
    }

    if (code === undefined || code === null) return Promise.resolve(responseData)

    // 成功
    if (code === ResultEnum.SUCCESS) {
      return Promise.resolve(responseData)
    }

    // 登录过期
    if (code === ResultEnum.TOKEN_OVERDUE) {
      window['$message'].error(window['$t']('http.token_overdue_message'))
      // iframe 嵌入模式下，token 过期不重定向到登录页
      console.error('[GoView] iframe 模式：token 已过期，请更新 URL 中的 token 参数')
      return Promise.resolve(responseData)
    }

    // 固定错误码重定向
    if (ErrorPageNameMap.get(code)) {
      redirectErrorPage(code)
      return Promise.resolve(responseData)
    }

    // 提示错误
    window['$message'].error(window['$t']((res.data as any).msg || message))
    return Promise.resolve(responseData)
  },
  (err: AxiosError) => {
    const status = err.response?.status
    switch (status) {
      case 401:
        routerTurnByName(PageEnum.BASE_LOGIN_NAME)
        Promise.reject(err)
        break

      default:
        Promise.reject(err)
        break
    }
  }
)

export default axiosInstance