/*
 * 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.sk89q.minecraft.util.commands;

import com.sk89q.worldedit.internal.util.LogManagerCompat;
import org.apache.logging.log4j.Logger;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

public class SimpleInjector implements Injector {

    private static final Logger LOGGER = LogManagerCompat.getLogger();
    private final Object[] args;
    private final Class<?>[] argClasses;

    public SimpleInjector(Object... args) {
        this.args = args;
        argClasses = new Class[args.length];
        for (int i = 0; i < args.length; ++i) {
            argClasses[i] = args[i].getClass();
        }
    }

    @Override
    public Object getInstance(Class<?> clazz) {
        try {
            Constructor<?> ctr = clazz.getConstructor(argClasses);
            ctr.setAccessible(true);
            return ctr.newInstance(args);
        } catch (NoSuchMethodException | IllegalAccessException | InstantiationException | InvocationTargetException e) {
            LOGGER.error("Error initializing commands class " + clazz, e);
            return null;
        }
    }

}
