package org.bukkit.event.entity;

import org.bukkit.entity.Entity;
import org.bukkit.event.Cancellable;

/**
 * Stores data for creepers being (un)powered
 */
public class CreeperPowerEvent extends EntityEvent implements Cancellable {

    private boolean canceled;
    private Entity creeper;
    private PowerCause cause;
    private Entity bolt;

    public CreeperPowerEvent(Entity creeper, Entity bolt, PowerCause cause) {
        super(Type.CREEPER_POWER, creeper);
        this.creeper = creeper;
        this.bolt = bolt;
        this.cause = cause;
    }

    public CreeperPowerEvent(Entity creeper, PowerCause cause) {
        super(Type.CREEPER_POWER, creeper);
        this.creeper = creeper;
        this.cause = cause;
        this.bolt = null;
    }

    /**
     * Gets the cancellation state of this event. A canceled event will not
     * be executed in the server, but will still pass to other plugins
     *
     * @return true if this event is canceled
     */
    public boolean isCancelled() {
        return canceled;
    }

    /**
     * Sets the cancellation state of this event. A canceled event will not
     * be executed in the server, but will still pass to other plugins
     *
     * @param cancel true if you wish to cancel this event
     */
    public void setCancelled(boolean cancel) {
        canceled = cancel;
    }

    /**
     * Gets the bolt which is striking the creeper.
     *
     * @return lightning entity
     */
    public Entity getLightning() {
        return bolt;
    }

    /**
     * Gets the cause of the creeper being (un)powered.
     * @return A PowerCause value detailing the cause of change in power.
     */
    public PowerCause getCause() {
        return cause;
    }

    /**
     * An enum to specify the cause of the change in power
     */
    public enum PowerCause {

        /**
         * Power change caused by a lightning bolt
         * Powered state: true
         */
        LIGHTNING,
        /**
         * Power change caused by something else (probably a plugin)
         * Powered state: true
         */
        SET_ON,
        /**
         * Power change caused by something else (probably a plugin)
         * Powered state: false
         */
        SET_OFF
    }
}