/* */ 
"use strict";
var __extends = (this && this.__extends) || function(d, b) {
  for (var p in b)
    if (b.hasOwnProperty(p))
      d[p] = b[p];
  function __() {
    this.constructor = d;
  }
  d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var async_1 = require('../scheduler/async');
var isDate_1 = require('../util/isDate');
var Subscriber_1 = require('../Subscriber');
var Notification_1 = require('../Notification');
function delay(delay, scheduler) {
  if (scheduler === void 0) {
    scheduler = async_1.async;
  }
  var absoluteDelay = isDate_1.isDate(delay);
  var delayFor = absoluteDelay ? (+delay - scheduler.now()) : Math.abs(delay);
  return this.lift(new DelayOperator(delayFor, scheduler));
}
exports.delay = delay;
var DelayOperator = (function() {
  function DelayOperator(delay, scheduler) {
    this.delay = delay;
    this.scheduler = scheduler;
  }
  DelayOperator.prototype.call = function(subscriber, source) {
    return source.subscribe(new DelaySubscriber(subscriber, this.delay, this.scheduler));
  };
  return DelayOperator;
}());
var DelaySubscriber = (function(_super) {
  __extends(DelaySubscriber, _super);
  function DelaySubscriber(destination, delay, scheduler) {
    _super.call(this, destination);
    this.delay = delay;
    this.scheduler = scheduler;
    this.queue = [];
    this.active = false;
    this.errored = false;
  }
  DelaySubscriber.dispatch = function(state) {
    var source = state.source;
    var queue = source.queue;
    var scheduler = state.scheduler;
    var destination = state.destination;
    while (queue.length > 0 && (queue[0].time - scheduler.now()) <= 0) {
      queue.shift().notification.observe(destination);
    }
    if (queue.length > 0) {
      var delay_1 = Math.max(0, queue[0].time - scheduler.now());
      this.schedule(state, delay_1);
    } else {
      source.active = false;
    }
  };
  DelaySubscriber.prototype._schedule = function(scheduler) {
    this.active = true;
    this.add(scheduler.schedule(DelaySubscriber.dispatch, this.delay, {
      source: this,
      destination: this.destination,
      scheduler: scheduler
    }));
  };
  DelaySubscriber.prototype.scheduleNotification = function(notification) {
    if (this.errored === true) {
      return;
    }
    var scheduler = this.scheduler;
    var message = new DelayMessage(scheduler.now() + this.delay, notification);
    this.queue.push(message);
    if (this.active === false) {
      this._schedule(scheduler);
    }
  };
  DelaySubscriber.prototype._next = function(value) {
    this.scheduleNotification(Notification_1.Notification.createNext(value));
  };
  DelaySubscriber.prototype._error = function(err) {
    this.errored = true;
    this.queue = [];
    this.destination.error(err);
  };
  DelaySubscriber.prototype._complete = function() {
    this.scheduleNotification(Notification_1.Notification.createComplete());
  };
  return DelaySubscriber;
}(Subscriber_1.Subscriber));
var DelayMessage = (function() {
  function DelayMessage(time, notification) {
    this.time = time;
    this.notification = notification;
  }
  return DelayMessage;
}());
