package geniusweb.deadline;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

/**
 * How long a session will be allowed to run
 */
public class DeadlineTime implements Deadline {

	/**
	 * Note, we do NOT use ISO 8601 standard because we need milliseconds
	 * accuracy.
	 */
	private final Long durationms;

	/**
	 * 
	 * @param millis number of milliseconds the session will be allowed to run
	 */
	@JsonCreator
	public DeadlineTime(@JsonProperty("durationms") long millis) {
		if (millis <= 0) {
			throw new IllegalArgumentException(
					"deadline must be positive time");
		}
		this.durationms = millis;
	}

	/**
	 * 
	 * @return the duration of this deadline, measured in milliseconds
	 */
	@Override
	public Long getDuration() {
		return durationms;
	}

	@Override
	public String toString() {
		return "DeadlineTime[" + durationms + "]";
	}

	/**
	 * NOTICE we have overridden this to use class hashcode as well.
	 */
	@Override
	public int hashCode() {
		return getClass().hashCode()
				+ ((durationms == null) ? 0 : durationms.hashCode());
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		DeadlineTime other = (DeadlineTime) obj;
		if (durationms == null) {
			if (other.durationms != null)
				return false;
		} else if (!durationms.equals(other.durationms))
			return false;
		return true;
	}

}