zby-live-sdk/src/util/statsStore.js

This is a live SDK for weclassroom.

import defaultApi from '../default';

export class DataStore extends Map {
  /**
   * 
   * @param {number} dataValidityPeriod 数据有效期，毫秒，默认1000ms
   */
  constructor(dataValidityPeriod = 1000) {
    super();
    this.dataValidityPeriod = dataValidityPeriod;
    defaultApi.writeLog(`DataStore dataValidityPeriod: ${dataValidityPeriod}`);
  }

  setData(key, data) {
    let obj = this.get(key);
    if (!obj) {
      obj = {};
      this.set(key, obj);
    }
    obj.timestamp = Date.now();
    obj.data = data;
  }

  getData(key) {
    const obj = this.get(key);
    if (!obj) {
      defaultApi.writeLog(`DataStore getData key: ${key}, data is null`);
      return null;
    }

    // obj设置时的时间戳与当前时间戳的差值
    const timeCost = Date.now() - obj.timestamp;
    // 没有data或者data已经超过有效期，返回空
    if (timeCost > this.dataValidityPeriod) {
      defaultApi.writeLog(`DataStore getData key: ${key}, cost: ${timeCost}, dataValidityPeriod: ${this.dataValidityPeriod}, data: ${obj.data}`);
      this.delete(key);
      return null;
    } else {
      return obj.data;
    }
  }

  /**
   * 检查数据是否过期
   * @param {*} data 
   * @returns 
   */
  checkData(data) {
    if (!data || !data.timestamp) {
      throw new Error('DataStore checkData data is null or data.timestamp is null');
    }
    const timeCost = Date.now() - data.timestamp;
    if (timeCost > this.dataValidityPeriod) {
      return false;
    } else {
      return true;
    }
  }

  restore() {
    this.clear();
  }

  /**
   * 更新数据有效期
   * @param {number} value 
   */
  updateValidityPeriod(value) {
    defaultApi.writeLog(`DataStore updateValidityPeriod value: ${value}`);
    if (typeof value !== 'number') {
      return;
    }
    this.dataValidityPeriod = value;
  }
}

export const userAndDeviceStatusInfo = {
  microPhone: undefined,
  camera: undefined,
  isPushingFlow: undefined,
};

// https://yach-doc-shimo.zhiyinlou.com/docs/loqeW4ME41ie1Anz/ 《学习报告在线时长优化》
let background = 0; // 0:否(默认值)，1：转到后台
/**
 * 设置前后台状态
 * @param {boolean} isBackground 
 */
export const setBackgroundStatus = (isBackground) => {
  background = isBackground ? 1 : 0;
};
/**
 * 获取前后台状态
 * @returns {number} 0:否(默认值)，1：转到后台
 */
export const getBackgroundStatus = () => {
  return background;
};