hurricane/security_camera/resources/cloud_server/public/src/helpers/ElapsedTimer.js - v4.1

export class ElapsedTimer {
  constructor(callback, offsetMs = 0) {
    this.timer = null
    this.offsetMs = offsetMs
    this.callback = callback
    if(this.startTime >= 0 && this.callback) {
      this._update()
    }
  }
  start(offsetMs = 0, callback = null) {
    this.startTime = Date.now()
    this.offsetMs = offsetMs
    if(callback) {
      this.callback = callback
    }
    this._update()
  }
  stop() {
    if(this.timer) {
      clearInterval(this.timer)
      this.timer = null
    }
  }
  _update() {
    this.stop()
    let nextTime = 1
    let elapsedMs = (Date.now() - this.startTime) + this.offsetMs
    let elapsed = elapsedMs / 1000
    this.callback(elapsedMs)
    if(elapsed < 60) {
      nextTime = 5
    } else if(elapsed < 60 * 60) {
      nextTime = 60
    } else if(elapsed < 60 * 60 * 24) {
      nextTime = 60 * 60
    } else {
      nextTime = 60 * 60 * 24
    }
    // logger.debug(`Next timeout: ${nextTime}`)
    this.timer = setTimeout(this._update.bind(this), nextTime * 1000)
  }
}
export const elapsedCallback = function(callback, offsetMs = 0) {
  return new ElapsedTimer(callback, offsetMs)
}