nostone_loan_wxapp/utils/init.js

import { requestUrl, instanceRequset, instanceResponse } from '../config'

class Index {
  // 全局报错提示
  static err = () => wx.$err = data => {
    console.log(data);
    wx.showModal({ showCancel: false, title: "报错提示", confirmText: "了解", content: JSON.stringify(data) })
  }
  // 获取系统信息
  static system = that => {
    return new Promise((resolve, reject) => {
      // color ui使用
      try {
        let { statusBarHeight: StatusBar } = wx.getSystemInfoSync(),
          capsule = wx.getMenuButtonBoundingClientRect();
        that.globalData = capsule ? { StatusBar, Custom: capsule, CustomBar: capsule.bottom + capsule.top - StatusBar } : { StatusBar, CustomBar: StatusBar + 50 };
        resolve();
      } catch (err) { reject(err) }
    })
  }
  // 全局请求封装
  static request = () => {
    function URL (argA, argB) {
      let reg1 = /^http:[?=.a-zA-Z0-9_\/\\-]+$/i,
        reg2 = /^https:[?=.a-zA-Z0-9_\/\\-]+$/i;
      if (argB.length == 0 || reg1.test(argA) || reg2.test(argA)) return argA;
      return argB + argA;
    }
    function _request (data) {
      data["url"] = URL(data.url, requestUrl);
      data = instanceRequset(data);
      return new Promise((resolve, reject) => {
        wx.request({
          ...data,
          success: function (res) {
            try { let data = instanceResponse(res); resolve(data); } catch (err) { console.log(err); reject(err) }
          },
          fail: function (err) {
            reject(err)
          },
        })
      })
    }
    wx.$request = _request;
  }
  // 小程序需要的参数
  static mustArg = () => {
    function login () { return new Promise((resolve, reject) => wx.login({ success: res => resolve(res), fail: () => reject("code获取失败！") })) };
    function getUserInfo () { return new Promise((resolve, reject) => wx.getUserInfo({ success: res => resolve(res), fail: () => reject("账号信息获取失败！") })) }
    return new Promise(async (resolve, reject) => {
      try {
        // appId
        const accountinfo = wx.getAccountInfoSync();
        let { appId } = accountinfo.miniProgram;
        // code
        let { code } = await login();
        // encryptedData, iv, userInfo
        let { encryptedData, iv, userInfo } = await getUserInfo();
        resolve({ appId, code, encryptedData, iv, userInfo })
      } catch (err) { reject(err) }
    })
  }
}

async function init () {
  try {
    await Index.system(this);
    Index.err();
    // 清空token
    wx.setStorageSync("token", '');
    Index.request();
    // 小程序需要的参数
    let mustArg = await Index.mustArg();
    // 小程序首次请求
    let user = await wx.$request({ url: "/account/code2Session/", method: "post", data: { code: mustArg.code, appid: mustArg.appId } });
    wx.setStorageSync("token", user.data.token ? 'JWT ' + user.data.token : '');

    this.globalData = { ...this.globalData, mustArg, user: user.data, _initState: true, };
    console.log(this.globalData)

  } catch (err) {
    console.log(err)
  }
}

module.exports = init;