/*
 * This file is part of the Illarion project.
 *
 * Copyright © 2015 - Illarion e.V.
 *
 * Illarion is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Illarion is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
package illarion.client.net.client;

import illarion.client.net.CommandList;
import illarion.common.net.NetCommWriter;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;

/**
 * This command is used to tell the server that the player is using a item in a item container.
 *
 * @author Martin Karing <nitram@illarion.org>
 */
@Immutable
public final class UseContainerCmd extends AbstractCommand {
    /**
     * The ID of the container that contains the used slot.
     */
    private final short containerId;

    /**
     * The slot that is used.
     */
    private final short slot;

    /**
     * Default constructor for the use command.
     *
     * @param container the ID of the container that is used
     * @param slot the ID of the container slot that is used
     */
    public UseContainerCmd(int container, int slot) {
        super(CommandList.CMD_USE);

        containerId = (short) container;
        this.slot = (short) slot;
    }

    @Override
    public void encode(@Nonnull NetCommWriter writer) {
        writer.writeUByte((short) 2); // CONTAINER REFERENCE
        writer.writeUByte(containerId);
        writer.writeUByte(slot);
    }

    @Nonnull
    @Override
    public String toString() {
        return toString("Container: " + containerId + " Slot: " + slot);
    }
}