var getFlightTimer = function(flightId, delay) {

	if (arguments[1] === undefined) {
		delay = config.monitor.interval;
	}


	return new Timer(flightId, delay, config.monitor.interval, function(timer) {
		var info = (new FlightMonitorBox()).get(timer.id),
			flight = info.flight,
			monitor = info.monitor,
			oldData = flight.data,
			newData,
			popup = false;

		monitor.lastTime = Util.date.now();
		flight.getData(
			true,
			true,
			function(newData) {
				if (monitor.type == 'absolute') {
					if (parseInt(newData.main.price, 10) < parseInt(oldData.main.price, 10)) { //满足条件
						Storage.set('showStage', {
							name: 'ticketNotice',
							data: flight.getId()
						});
						popup = true;
					}
				} else { //relative
					if (parseInt(newData.main.price, 10) != parseInt(oldData.main.price, 10)) {
						Storage.set('showStage', {
							name: 'ticketNotice',
							data: flight.getId()
						});
						popup = true;
					}
				}

				delete info.error;
				chrome.browserAction.setBadgeText({text: ''});
			},
			function(error) {
				if (error.name === 'QuerySoldOutError') {
					Storage.set('showStage', {
						name: 'ticketAdvice',
						data: {
							errors: [{
								flightId: flight.getId(),
								status: '已售罄',
							}],
							advice: '请您重新设置'
						}
					});
					timer.halt();
					popup = true;
				} else if (error.name === 'QueryDateError') {
					Storage.set('showStage', {
						name: 'ticketAdvice',
						data: {
							errors: [{
								flightId: flight.getId(),
								status: '已过期',
							}],
							advice: '请您重新设置'
						}
					});
					timer.halt();
					popup = true;
				}

				info.error = error;
				chrome.browserAction.setBadgeText({text: '!'});
			},
			function() {
				(new FlightMonitorBox()).persistenceOne(flight.getId());
				if (popup) {
					Util.popup();
				}
			}
		);
	});
};