import { sleep } from "./sleep";

export class TimePin
{
  protected _timeMS:number;

  now()
  {
    this._timeMS = new Date().getTime();
  }

  static create()
  {
    let pin = new TimePin();
    pin._timeMS = new Date().getTime();
    return pin;
  }

  async forMS( durationMS:number, sleepStepsMS:number = 15 ):Promise<void>
  {
    let endTime = this._timeMS + durationMS;
    let currentTime = new Date().getTime();
    
    while ( currentTime < endTime )
    {
      await sleep( sleepStepsMS) ;
      currentTime = new Date().getTime(); 
    }

    return Promise.resolve();
  }
}