class CalendarViewController extends OnTimeViewController {
	viewDidLoad() {
		this.selectDay(Time.getCurrentLocalDayIndex());
	}

	/**
	 * Selects the given day in the date selection and displays the work time periods for that date.
	 */
	selectDay(dayIndex) {
		this.selectedDayIndex = dayIndex;
		var date = Time.getDateForLocalDayIndex(this.selectedDayIndex);

		var dateString = date.toLocaleDateString(undefined, {
			year: "numeric",
			month: "numeric",
			day: "numeric"
		});
		var weekdayString = date.toLocaleDateString(undefined, {
			weekday: "long"
		});

		this.dayNameLabel.innerText = weekdayString;
		this.dateLabel.innerText = dateString;

		this.dayViewController.displayDay(this.selectedDayIndex);
	}

	/**
	 * Move the day selection by the given amount of days (positive or negative amount).
	 */
	selectDayRelative(days) {
		this.selectDay(this.selectedDayIndex + days);
	}

	onNextDayButtonPressed(event) {
		this.selectDayRelative(1);
	}

	onPreviousDayButtonPressed(event) {
		this.selectDayRelative(-1);
	}

	onSelectTodayButtonPressed(event) {
		this.selectDay(Time.getCurrentLocalDayIndex());
	}
}

UIKit.registerViewControllerType(CalendarViewController);