import Action from '../core/Action';
import {SUCCESS, RUNNING} from '../constants';

/**
 * Wait a few seconds.
 *
 * @module b3
 * @class Wait
 * @extends Action
 **/

export default class Wait extends Action {

  /**
   * Creates an instance of Wait.
   * @param {Object} settings Object with parameters
   * @param {Number} settings.milliseconds Maximum time, in milliseconds, a child can execute.
   * @memberof Wait
   */
  constructor({milliseconds = 0} = {}) {
    super({
      name: 'Wait',
      title: 'Wait <milliseconds>ms',
      properties: {milliseconds: 0},
    });

    this.endTime = milliseconds;
  }

  /**
   * Open method.
   * @method open
   * @param {Tick} tick A tick instance.
   **/
  open(tick) {
    var startTime = (new Date()).getTime();
    tick.blackboard.set('startTime', startTime, tick.tree.id, this.id);
  }

  /**
   * Tick method.
   * @method tick
   * @param {Tick} tick A tick instance.
   * @return {Constant} A state constant.
   **/
  tick(tick) {
    var currTime = (new Date()).getTime();
    var startTime = tick.blackboard.get('startTime', tick.tree.id, this.id);

    if (currTime - startTime > this.endTime) {
      return SUCCESS;
    }

    return RUNNING;
  }
};