package org.bukkit.event.player;

import org.bukkit.Material;
import org.bukkit.Statistic;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.event.Cancellable;
import org.bukkit.event.HandlerList;

/**
 * Called when a player statistic is incremented.
 * <p>
 * This event is not called for {@link org.bukkit.Statistic#PLAY_ONE_TICK} or
 * movement based statistics.
 */
public class PlayerStatisticIncrementEvent extends PlayerEvent implements Cancellable
{
	private static final HandlerList handlers = new HandlerList();
	protected final Statistic statistic;
	private final int initialValue;
	private final int newValue;
	private boolean isCancelled = false;
	private final EntityType entityType;
	private final Material material;

	public PlayerStatisticIncrementEvent(Player player, Statistic statistic, int initialValue, int newValue)
	{
		super(player);
		this.statistic = statistic;
		this.initialValue = initialValue;
		this.newValue = newValue;
		this.entityType = null;
		this.material = null;
	}

	public PlayerStatisticIncrementEvent(Player player, Statistic statistic, int initialValue, int newValue, EntityType entityType)
	{
		super(player);
		this.statistic = statistic;
		this.initialValue = initialValue;
		this.newValue = newValue;
		this.entityType = entityType;
		this.material = null;
	}

	public PlayerStatisticIncrementEvent(Player player, Statistic statistic, int initialValue, int newValue, Material material)
	{
		super(player);
		this.statistic = statistic;
		this.initialValue = initialValue;
		this.newValue = newValue;
		this.entityType = null;
		this.material = material;
	}

	/**
	 * Gets the statistic that is being incremented.
	 *
	 * @return the incremented statistic
	 */
	public Statistic getStatistic()
	{
		return statistic;
	}

	/**
	 * Gets the previous value of the statistic.
	 *
	 * @return the previous value of the statistic
	 */
	public int getPreviousValue()
	{
		return initialValue;
	}

	/**
	 * Gets the new value of the statistic.
	 *
	 * @return the new value of the statistic
	 */
	public int getNewValue()
	{
		return newValue;
	}

	/**
	 * Gets the EntityType if {@link #getStatistic() getStatistic()} is an
	 * entity statistic otherwise returns null.
	 *
	 * @return the EntityType of the statistic
	 */
	public EntityType getEntityType()
	{
		return entityType;
	}

	/**
	 * Gets the Material if {@link #getStatistic() getStatistic()} is a block
	 * or item statistic otherwise returns null.
	 *
	 * @return the Material of the statistic
	 */
	public Material getMaterial()
	{
		return material;
	}

	public boolean isCancelled()
	{
		return isCancelled;
	}

	public void setCancelled(boolean cancel)
	{
		this.isCancelled = cancel;
	}

	@Override
	public HandlerList getHandlers()
	{
		return handlers;
	}

	public static HandlerList getHandlerList()
	{
		return handlers;
	}
}