weapp_group/utils/request.js

const { api } = require('../config/env.js')
const { DEBUG, NOT_LOGIN } = require('../config/index.js')
const { isUndef, getStorageSync, getLoginUserInfo } = require('./util.js')
const md5 = require('./md5.min.js')

export const commonParams = () => {
  let systemInfo = getStorageSync('systemInfo')
  if (!systemInfo) {
    try {
      systemInfo = wx.getSystemInfoSync()
      if (systemInfo) {
        wx.setStorageSync('systemInfo', systemInfo)
      }
    } catch (error) {}
  }
  let deviceId = 'weapp'
  let systemVersion = 'weapp'
  if (systemInfo) {
    let {
      brand,
      model,
      system
    } = systemInfo
    if (brand || model) {
      deviceId = brand + model
    }
    if (system && 'string' === typeof system) {
      systemVersion = system
    }
  }
  const params = {
    cityId: '254', //城市ID默认为2
    language: 'cn', //语言参数
    program: 'liuxue', // 小程序名称
    deviceType: 'weapp', //接口调用来源参数
    deviceId: deviceId, //设备唯一标识码
    apiVersion: '1.0.0', //api版本号
    systemVersion: systemVersion //操作系统及版本号
  }
  const loginUserInfo = getLoginUserInfo()
  if (loginUserInfo && loginUserInfo.token) {
    params.token = loginUserInfo.token //用户登录凭证token
  }
  let citySelectObj = getStorageSync('citySelectObj')
  if (citySelectObj) {
    params.cityId = citySelectObj.cityId //用户选择的城市id
  }
  return params
}

export const paramsSign = (params, url) => {
  /*参数签名*/
  let key = 'd9ce9fe030776727e85442d033d1be84'
  if (url && url.indexOf('/common/') !== -1) {
    key = 'b15681f74461af9642ab5356fba7962b'
  }
  const tempParams = { ...params }
  const paramsString = Object.keys(tempParams).sort().map(key => {
    return `${key}=${tempParams[key]}`
  }).concat(`key=${key}`).join('&')

  return md5(paramsString).toLowerCase()
}

export const request = (params) => {
  return new Promise((resolve, reject) => {
    const temp = params
    // 过滤空值
    for (const key in temp.data) {
      if (isUndef(temp.data[key])) {
        delete temp.data[key]
      }
    }
    temp.data = { ...commonParams(), ...temp.data }
    temp.data.signToken = paramsSign(temp.data, temp.url)
    wx.request({
      url: api + temp.url,
      data: temp.data,
      header: {
        'content-type': 'application/x-www-form-urlencoded; charset=UTF-8',
        ...temp.header
      },
      method: temp.method || 'POST',
      dataType: temp.dataType || 'json',
      success: res => {
        const response = res.data
        DEBUG && console.log(`Request for ${temp.url} exception.--->${response.msg}`)
        if (response && response.code !== 0) {
          // 未登录
          if (NOT_LOGIN === response.code) {
            wx.clearStorage()
            wx.showToast({
              title: '您的用户信息已失效，请重新登录操作',
              icon: 'none',
              duration: 2000,
              success: () => {
                wx.navigateTo({
                  url: '/pages/login/login'
                })
              }
            })
          } else {
            wx.showToast({
              title: response.msg || 'error',
              icon: 'none',
              duration: 2000
            })
            reject(response)
          }
        } else {
          resolve(response)
        }
      },
      fail: err => {
        DEBUG && console.log(`Request for ${temp.url} fail.--->`, err)
        reject(err)
      },
      complete: () => {
        wx.stopPullDownRefresh()
      }
    })
  })
}