/*
 * WorldEdit, a Minecraft world manipulation toolkit
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) WorldEdit team and contributors
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package me.patothebest.gamecore.command;

import javax.annotation.Nullable;

public class CommandUsageException extends CommandException {

    protected @Nullable
    String usage;

    public CommandUsageException(String message) {
        this(message, null);
    }

    public CommandUsageException(String message, @Nullable String usage) {
        super(message);
        this.usage = usage;
    }

    public String getUsage() {
        return usage != null ? usage : "";
    }

    public void offerUsage(String usage) {
        if(this.usage == null) {
            this.usage = usage;
        }
    }
}
