export function getDayViewHourGrid(
    { viewDate, hourSegments, dayStart, dayEnd }:
        { viewDate: Date, hourSegments: number, dayStart: any, dayEnd: any }
): DayViewHour[] {

    const hours: DayViewHour[] = [];

    const startOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfDay(viewDate), dayStart.hour), dayStart.minute);
    const endOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfMinute(dateFns.endOfDay(viewDate)), dayEnd.hour), dayEnd.minute);
    const segmentDuration: number = MINUTES_IN_HOUR / hourSegments;
    const startOfViewDay: Date = dateFns.startOfDay(viewDate);

    for (let i: number = 0; i < HOURS_IN_DAY; i++) {
        const segments: DayViewHourSegment[] = [];
        for (let j: number = 0; j < hourSegments; j++) {
            const date: Date = dateFns.addMinutes(dateFns.addHours(startOfViewDay, i), j * segmentDuration);
            if (date >= startOfView && date < endOfView) {
                segments.push({
                    date,
                    isStart: j === 0
                });
            }
        }
        if (segments.length > 0) {
            hours.push({ segments });
        }
    }

    return hours;
}

    }).map((entry: WeekViewEvent) => {
        const startOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfDay(entry.event.start), dayStart.hour), dayStart.minute);
        const endOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfMinute(dateFns.endOfDay(entry.event.start)), dayEnd.hour), dayEnd.minute);

        const eventStart: Date = entry.event.start;
        const eventEnd: Date = entry.event.end || eventStart;

        const hourHeightModifier: number = (hourSegments * segmentHeight) / MINUTES_IN_HOUR;

        if (eventStart > startOfView) {
            entry.top += dateFns.differenceInMinutes(eventStart, startOfView);
        }

        entry.top *= hourHeightModifier;

        const startsBeforeDay: boolean = eventStart < startOfView;
        const endsAfterDay: boolean = eventEnd > endOfView;

        const startDate: Date = startsBeforeDay ? startOfView : eventStart;
        const endDate: Date = endsAfterDay ? endOfView : eventEnd;

        let height: number = dateFns.differenceInMinutes(endDate, startDate);

        if (!entry.event.end) {
            height = segmentHeight;
        } else {
            height *= hourHeightModifier;
        }

        entry.height = height;

        return entry;
    });

 it('dayViewHour', () => {
   expect(
     dateFormatter.dayViewHour({
       date: startOfDay(new Date('2016-01-01')),
       locale: 'en'
     })
   ).to.equal('12 AM');
 });

  return events.filter((event) => {
    const eventStart: Date = event.start;
    const eventEnd: Date = event.end || eventStart;

    const startOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfDay(eventStart), dayStart.hour), dayStart.minute);
    const endOfView: Date = dateFns.setMinutes(dateFns.setHours(dateFns.startOfMinute(eventStart), dayEnd.hour), dayEnd.minute);

    return dateFns.isAfter(eventEnd, startOfView) && dateFns.isBefore(eventStart, endOfView);
  });

function getWeekDay({ date }: { date: Date }): WeekDay {
  const today: Date = dateFns.startOfDay(new Date());
  return {
    date,
    isPast: date < today,
    isToday: dateFns.isSameDay(date, today),
    isFuture: date > today,
    isWeekend: WEEKEND_DAY_NUMBERS.indexOf(dateFns.getDay(date)) > -1,
  };
}

function createSchedule(props: Partial<Schedule> & {transaction_date: Date} = {transaction_date: new Date()}): Schedule & {transaction_date: Date} {
	return Object.assign({
		transaction_date: new Date(),
		frequency: "Monthly" as ScheduleFrequency,
		next_due_date: addDays(startOfDay(new Date()), 3),
		auto_enter: false,
		autoFlag: false,
		overdue_count: 0,
		estimate: false
	}, props);
}

function createPartialTransaction(props: Partial<Transaction | SplitTransactionChild>): Partial<Transaction | SplitTransactionChild> {
	id++;

	return Object.assign({
		id,
		memo: "",
		flag: null,
		balance: 0,
		transaction_date: subDays(startOfDay(new Date()), 1),
		status: "" as TransactionStatus
	}, props);
}

export function getMonthView({
  events = [],
  viewDate,
  weekStartsOn,
  excluded = [],
}: {
  events?: CalendarEvent[];
  viewDate: Date;
  weekStartsOn: number;
  excluded?: number[];
}): MonthView {
  if (!events) {
    events = [];
  }

  const start: Date = dateFns.startOfWeek(dateFns.startOfMonth(viewDate), { weekStartsOn });
  const end: Date = dateFns.endOfWeek(dateFns.endOfMonth(viewDate), { weekStartsOn });
  const eventsInMonth: CalendarEvent[] = getEventsInPeriod({
    events,
    periodStart: start,
    periodEnd: end,
  });
  const days: MonthViewDay[] = [];
  for (let i: number = 0; i < dateFns.differenceInDays(end, start) + 1; i++) {
    const date: Date = dateFns.addDays(start, i);
    if (!excluded.some((e) => date.getDay() === e)) {
      const day: MonthViewDay = getWeekDay({ date }) as MonthViewDay;
      const calEvents: CalendarEvent[] = getEventsInPeriod({
        events: eventsInMonth,
        periodStart: dateFns.startOfDay(date),
        periodEnd: dateFns.endOfDay(date),
      });
      day.inMonth = dateFns.isSameMonth(date, viewDate);
      day.events = calEvents;
      day.badgeTotal = calEvents.length;
      days.push(day);
    }
  }

  const totalDaysVisibleInWeek: number = DAYS_IN_WEEK - excluded.length;
  const rows: number = Math.floor(days.length / totalDaysVisibleInWeek);
  const rowOffsets: number[] = [];
  for (let i: number = 0; i < rows; i++) {
    rowOffsets.push(i * totalDaysVisibleInWeek);
  }

  return {
    rowOffsets,
    totalDaysVisibleInWeek,
    days,
  };
}

 it('should set the view date to the start of today', () => {
   const fixture: ComponentFixture<TestComponent> = TestBed.createComponent(
     TestComponent
   );
   fixture.componentInstance.viewDate = new Date('2017-01-28');
   fixture.detectChanges();
   fixture.nativeElement.querySelector('button').click();
   fixture.detectChanges();
   expect(fixture.componentInstance.viewDate).to.deep.equal(
     startOfDay(new Date())
   );
   fixture.destroy();
 });

 /**
  * Constructor
  *
  * @param data
  */
 constructor(data?)
 {
     data = data || {};
     this.start = new Date(data.start) || startOfDay(new Date());
     this.end = new Date(data.end) || endOfDay(new Date());
     this.title = data.title || '';
     this.color = {
         primary  : data.color && data.color.primary || '#1e90ff',
         secondary: data.color && data.color.secondary || '#D1E8FF'
     };
     this.draggable = data.draggable;
     this.resizable = {
         beforeStart: data.resizable && data.resizable.beforeStart || true,
         afterEnd   : data.resizable && data.resizable.afterEnd || true
     };
     this.actions = data.actions || [];
     this.allDay = data.allDay || false;
     this.cssClass = data.cssClass || '';
     this.meta = {
         location: data.meta && data.meta.location || '',
         notes   : data.meta && data.meta.notes || ''
     };
 }