import type { AxiosResponse } from 'axios';
import { BACKEND_ERROR_CODE, createFlatRequest, createRequest } from '@sa/axios';
import { useAuthStore } from '@/store/modules/auth';
import { localStg } from '@/utils/storage';
import { getServiceBaseURL } from '@/utils/service';
import { $t } from '@/locales';
import { applyApiEncrypt } from './api-encrypt';
import { getAuthorization, handleExpiredRequest, showErrorMsg } from './shared';
import type { RequestInstanceState } from './type';

const isHttpProxy = import.meta.env.DEV && import.meta.env.VITE_HTTP_PROXY === 'Y';
const { baseURL, otherBaseURL } = getServiceBaseURL(import.meta.env, isHttpProxy);

export const request = createFlatRequest(
  {
    baseURL,
    headers: {
      apifoxToken: 'XL299LiMEDZ0H5h3A29PxwQXdMJqWyY2'
    }
  },
  {
    defaultState: {
      errMsgStack: [],
      refreshTokenPromise: null
    } as RequestInstanceState,
    transform(response: AxiosResponse<App.Service.Response<any>>) {
      return response.data.data;
    },
    async onRequest(config) {
      const Authorization = getAuthorization();
      Object.assign(config.headers, { Authorization });
      applyApiEncrypt(config);

      return config;
    },
    isBackendSuccess(response) {
      // 当后端返回码为 "0"（默认）时，表示请求成功
      // 如需调整该逻辑，可修改 `.env` 中的 `VITE_SERVICE_SUCCESS_CODE`
      return String(response.data.code) === import.meta.env.VITE_SERVICE_SUCCESS_CODE;
    },
    async onBackendFail(response, instance) {
      const authStore = useAuthStore();
      const responseCode = String(response.data.code);

      function handleLogout() {
        authStore.resetStore();
      }

      function logoutAndCleanup() {
        handleLogout();
        window.removeEventListener('beforeunload', handleLogout);

        request.state.errMsgStack = request.state.errMsgStack.filter(msg => msg !== response.data.msg);
      }

      // 当后端返回码命中 `logoutCodes` 时，表示用户需要退出登录并跳转到登录页
      const logoutCodes = import.meta.env.VITE_SERVICE_LOGOUT_CODES?.split(',') || [];
      if (logoutCodes.includes(responseCode)) {
        handleLogout();
        return null;
      }

      // 当后端返回码命中 `modalLogoutCodes` 时，表示通过弹窗提示后再退出登录
      const modalLogoutCodes = import.meta.env.VITE_SERVICE_MODAL_LOGOUT_CODES?.split(',') || [];
      if (modalLogoutCodes.includes(responseCode) && !request.state.errMsgStack?.includes(response.data.msg)) {
        request.state.errMsgStack = [...(request.state.errMsgStack || []), response.data.msg];

        // 防止用户刷新页面绕过退出逻辑
        window.addEventListener('beforeunload', handleLogout);

        window.$messageBox
          ?.confirm(response.data.msg, $t('common.error'), {
            confirmButtonText: $t('common.confirm'),
            cancelButtonText: $t('common.cancel'),
            type: 'error',
            closeOnClickModal: false,
            closeOnPressEscape: false
          })
          .then(() => {
            logoutAndCleanup();
          });

        return null;
      }

      // 当后端返回码命中 `expiredTokenCodes` 时，表示 token 已过期，需要刷新 token
      // `refreshToken` 接口不能再返回 `expiredTokenCodes` 中的错误码，否则会形成死循环，应返回 `logoutCodes` 或 `modalLogoutCodes`
      const expiredTokenCodes = import.meta.env.VITE_SERVICE_EXPIRED_TOKEN_CODES?.split(',') || [];
      if (expiredTokenCodes.includes(responseCode)) {
        const success = await handleExpiredRequest(request.state);
        if (success) {
          const Authorization = getAuthorization();
          Object.assign(response.config.headers, { Authorization });

          return instance.request(response.config) as Promise<AxiosResponse>;
        }
      }

      return null;
    },
    onError(error) {
      // 请求失败时，在这里统一处理错误提示

      let message = error.message;
      let backendErrorCode = '';

      // 获取后端错误信息和错误码
      if (error.code === BACKEND_ERROR_CODE) {
        message = error.response?.data?.msg || message;
        backendErrorCode = String(error.response?.data?.code || '');
      }

      // 这类错误信息已经通过弹窗展示，不再重复提示
      const modalLogoutCodes = import.meta.env.VITE_SERVICE_MODAL_LOGOUT_CODES?.split(',') || [];
      if (modalLogoutCodes.includes(backendErrorCode)) {
        return;
      }

      // token 过期时会自动刷新并重试请求，这里无需额外提示
      const expiredTokenCodes = import.meta.env.VITE_SERVICE_EXPIRED_TOKEN_CODES?.split(',') || [];
      if (expiredTokenCodes.includes(backendErrorCode)) {
        return;
      }

      showErrorMsg(request.state, message);
    }
  }
);

export const demoRequest = createRequest(
  {
    baseURL: otherBaseURL.demo
  },
  {
    transform(response: AxiosResponse<App.Service.DemoResponse>) {
      return response.data.result;
    },
    async onRequest(config) {
      const { headers } = config;

      // 设置 token
      const token = localStg.get('token');
      const Authorization = token ? `Bearer ${token}` : null;
      Object.assign(headers, { Authorization });

      return config;
    },
    isBackendSuccess(response) {
      // 当后端返回码为 "200" 时，表示请求成功
      // 如有需要可以自行调整这段逻辑
      return response.data.status === '200';
    },
    async onBackendFail(_response) {
      // 当后端返回码不是 "200" 时，表示请求失败
      // 例如：token 过期后可以在这里刷新 token 并重试请求
    },
    onError(error) {
      // 请求失败时，在这里统一处理错误提示

      let message = error.message;

      // 展示后端返回的错误信息
      if (error.code === BACKEND_ERROR_CODE) {
        message = error.response?.data?.message || message;
      }

      window.$message?.error(message);
    }
  }
);