heshui_shop_frontend/sheep/request/index.js

/**
 * Shopro-request
 * @description api模块管理，loading配置，请求拦截，错误处理
 */

import Request from 'luch-request';
import { baseUrl, apiPath } from '@/sheep/config';
import $store from '@/sheep/store';
import $platform from '@/sheep/platform';
import { showAuthModal } from '@/sheep/hooks/useModal';

const options = {
  // 显示操作成功消息 默认不显示
  showSuccess: false,
  // 成功提醒 默认使用后端返回值
  successMsg: '',
  // 显示失败消息 默认显示
  showError: true,
  // 失败提醒 默认使用后端返回信息
  errorMsg: '',
  // 显示请求时loading模态框 默认显示
  showLoading: true,
  // loading提醒文字
  loadingMsg: '加载中',
  // 需要授权才能请求 默认放开
  auth: false,
  // ...
};

// Loading全局实例
let LoadingInstance = {
  target: null,
  count: 0,
};

/**
 * 关闭loading
 */
function closeLoading() {
  if (LoadingInstance.count > 0) LoadingInstance.count--;
  if (LoadingInstance.count === 0) uni.hideLoading();
}

/**
 * @description 请求基础配置 可直接使用访问自定义请求
 */
const http = new Request({
  baseURL: baseUrl,
  timeout: 8000,
  method: 'GET',
  header: {
    Accept: 'text/json',
    'Content-Type': 'application/json;charset=UTF-8',
    platform: $platform.name,
  },
  // #ifdef APP-PLUS
  sslVerify: false,
  // #endif
  // #ifdef H5
  // 跨域请求时是否携带凭证（cookies）仅H5支持（HBuilderX 2.6.15+）
  withCredentials: false,
  // #endif
  custom: options,
});

/**
 * @description 请求拦截器
 */
http.interceptors.request.use(
  (config) => {
    if (config.custom.auth && !$store('user').isLogin) {
      showAuthModal();
      return Promise.reject();
    }
    if (config.custom.showLoading) {
      LoadingInstance.count++;
      LoadingInstance.count === 1 &&
        uni.showLoading({
          title: config.custom.loadingMsg,
          mask: true,
          fail: () => {
            uni.hideLoading();
          },
        });
    }
    const token = uni.getStorageSync('token');
    if (token) config.header['token'] = token;
    return config;
  },
  (error) => {
    return Promise.reject(error);
  },
);

/**
 * @description 响应拦截器
 */
http.interceptors.response.use(
  (response) => {
    // 自动设置登陆令牌
    if (response.header.token) {
      $store('user').setToken(response.header.token);
    }

    response.config.custom.showLoading && closeLoading();
    if (response.data.code !== 1) {
      if (response.config.custom.showError)
        uni.showToast({
          title: response.data.msg || '服务器开小差啦,请稍后再试~',
          icon: 'none',
          mask: true,
        });
      return Promise.resolve(response.data);
    }
    if (
      response.data.code === 1 &&
      response.data.msg !== '' &&
      response.config.custom.showSuccess
    ) {
      uni.showToast({
        title: response.config.custom.successMsg || response.data.msg,
        icon: 'none',
      });
    }
    return Promise.resolve(response.data);
  },
  (error) => {
    const userStore = $store('user');
    const isLogin = userStore.isLogin;
    let errorMessage = '网络请求出错';
    if (error !== undefined) {
      switch (error.statusCode) {
        case 400:
          errorMessage = '请求错误';
          break;
        case 401:
          if (isLogin) {
            errorMessage = '您的登陆已过期';
          } else {
            errorMessage = '请先登录';
          }
          userStore.logout(true);
          showAuthModal();
          break;
        case 403:
          errorMessage = '拒绝访问';
          break;
        case 404:
          errorMessage = '请求出错';
          break;
        case 408:
          errorMessage = '请求超时';
          break;
        case 429:
          errorMessage = '请求频繁, 请稍后再访问';
          break;
        case 500:
          errorMessage = '服务器开小差啦,请稍后再试~';
          break;
        case 501:
          errorMessage = '服务未实现';
          break;
        case 502:
          errorMessage = '网络错误';
          break;
        case 503:
          errorMessage = '服务不可用';
          break;
        case 504:
          errorMessage = '网络超时';
          break;
        case 505:
          errorMessage = 'HTTP版本不受支持';
          break;
      }
      if (error.errMsg.includes('timeout')) errorMessage = '请求超时';
      // #ifdef H5
      if (error.errMsg.includes('Network'))
        errorMessage = window.navigator.onLine ? '服务器异常' : '请检查您的网络连接';
      // #endif
    }

    if (error && error.config) {
      if (error.config.custom.showError === false) {
        uni.showToast({
          title: error.data?.msg || errorMessage,
          icon: 'none',
          mask: true,
        });
      }
      error.config.custom.showLoading && closeLoading();
    }

    return false;
  },
);

const request = (config) => {
  if (config.url[0] !== '/') {
    config.url = apiPath + config.url;
  }
  return http.middleware(config);
};

export default request;