Day.java

package uk.ac.aston.oop.calendar;

/**
 * Maintain the appointments for one day in a diary.
 */
public class Day {
	// The first and final bookable hours in a day.
	public static final int START_OF_DAY = 9;
	public static final int FINAL_APPOINTMENT_TIME = 17;

	// The number of bookable hours in a day.
	public static final int MAX_APPOINTMENTS_PER_DAY = FINAL_APPOINTMENT_TIME - START_OF_DAY + 1;

	// A day number within a particular year. (1-366)
	private int dayNumber;
	// The current list of appointments for this day.
	private Appointment[] appointments;

	/**
	 * Constructor for objects of class Day.
	 * 
	 * @param dayNumber The number of this day in the year (1-366).
	 */
	public Day(int dayNumber) {
		this.dayNumber = dayNumber;
		appointments = new Appointment[MAX_APPOINTMENTS_PER_DAY];
	}

	/**
	 * Make an appointment.
	 * 
	 * @param time        The hour at which the appointment starts.
	 * @param appointment The appointment to be made.
	 * @return true if the appointment was successful, false otherwise.
	 */
	public boolean makeAppointment(int time, Appointment appointment) {
		// TODO complete this function!	
		for(int i = 0; i <appointment.getDuration(); i++) {
			if(!(validTime(time + i))) {
				return false;
		}
		
	//if (validTime(time) && appointments [time - START_OF_DAY] == null) {
		if(appointments [time - START_OF_DAY + i] != null) {
		return false;
	}
		}
		
		for(int i = 0; i <appointment.getDuration(); i++) {
			appointments [time - START_OF_DAY + i] = appointment;
		
		}
		return true;
		}

	/**
	 * @param time Which time of day. This must be between the START_OF_DAY time and
	 *             the FINAL_APPOINTMENT_TIME.
	 * @return The Appointment at the given time. null is returned if either the
	 *         time is invalid or there is no Appointment at the given time.
	 */
	public Appointment getAppointment(int time) {
		if (validTime(time)) {
			return appointments[time - START_OF_DAY];
		} else {
			return null;
		}
	}

	/**
	 * @return The number of this day within the year (1 - 366).
	 */
	public int getDayNumber() {
		return dayNumber;
	}

	/**
	 * @return true if the time is between FINAL_APPOINTMENT_TIME and END_OF_DAY,
	 *         false otherwise.
	 */
	public boolean validTime(int time) {
		return time >= START_OF_DAY && time <= FINAL_APPOINTMENT_TIME;
	}
}