# 微信学生身份快速验证

const CODE_STORAGE_KEY = 'CODE_STORAGE_KEY'
Page({
  data: {
    showStudentVerifyDialog: false,
    isStudent: false, // 是否是学生
    studentcheckCode: '', // 获取学生身份的code
  },
  onLoad() {
    // 如果缓存里面有code, 获取一下
    const code = wx.getStorageSync(CODE_STORAGE_KEY) || ''
    if (code) {
      this.setData({
        studentcheckCode: code
      })
      this.checkStudentIdentity()
    }
    this.checkStudentPluginForUpdate()
  },
  checkStudentPluginForUpdate() {
    if (!wx.getPluginUpdateManager || !wx.getUpdateManager) {
      return
    }
    // 检查学生验证插件更新
    const pluginManager = wx.getPluginUpdateManager({
      pluginId: 'wxa16657d57059e0f0'
    })
    const weappManager = wx.getUpdateManager()
    console.log('pluginManager', pluginManager, 'weapp manager', weappManager)
    pluginManager.onUpdateReady(() => {
      console.log('onUpdateReady pluginManager')
      weappManager.applyUpdate()
    })
    pluginManager.onUpdateFailed(() => {
      console.log('onUpdateFailed pluginManager')
      // TODO: 更新失败开发者可做上报，方便监控
    })
  },
  onShowStudentVerifyDialog() {
    this.setData({
      showStudentVerifyDialog: true
    })
  },
  onStudentVerifyClose() {
    if (!this.data.studentcheckCode) {
      return
    }
    // 验证学生身份
    this.checkStudentIdentity()
  },
  onStudentVerifyAuth(e) {
    const code = e.detail.wx_studentcheck_code
    if (code) {
      this.setData({
        studentcheckCode: code
      })
      // 2小时有效，缓存到本地
      wx.setStorageSync(CODE_STORAGE_KEY, code)
      // 验证学生身份
      this.checkStudentIdentity()
    }
  },
  checkStudentIdentity(opt = {}) {
    if (!this.data.studentcheckCode) {
      opt.fail && opt.fail({errMsg: 'no student code'})
      return
    }
    // TODO: 后台需要提供一个https请求接口，调用5.2提供的API，直接把API的结果返回给前端
    wx.request({
      // TODO: 需替换成开发者的URL
      url: 'https://xxx/checkstudentidentity',
      data: {
        wx_studentcheck_code: this.data.studentcheckCode
      },
      ...opt,
      success: (res) => {
        if (res.data.errcode === 0) {
          this.setData({
            isStudent: res.data.bind_status === 3 && res.data.is_student
          })
        } else if (res.data.errcode !== -1) {
          // wx_studentcheck_code过期或无效, 清除掉这个字段
          this.setData({
            studentcheckCode: '',
          })
          wx.setStorageSync(CODE_STORAGE_KEY, '')
        } else {
          // TODO: 系统错误, 可以尝试ß重试一次
        }
        opt.success && opt.success(res)
      }
    })
  }
})