/*
 * 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 <http://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.extent;

import com.sk89q.worldedit.LocalWorld;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.blocks.BlockID;
import com.sk89q.worldedit.blocks.BlockType;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Handles various quirks when setting blocks, such as ice turning
 * into water or containers dropping their contents.
 */
public class BlockQuirkExtent extends ExtentDelegate {

    private final LocalWorld world;

    /**
     * Create a new instance.
     *
     * @param extent the extent
     * @param world the world
     */
    public BlockQuirkExtent(Extent extent, LocalWorld world) {
        super(extent);
        checkNotNull(world);
        this.world = world;
    }

    @Override
    public boolean setBlock(Vector position, BaseBlock block) throws WorldEditException {
        BaseBlock lazyBlock = getExtent().getLazyBlock(position);
        int existing = lazyBlock.getType();

        if (BlockType.isContainerBlock(existing)) {
            world.clearContainerBlockContents(position); // Clear the container block so that it doesn't drop items
        } else if (existing == BlockID.ICE) {
            world.setBlock(position, new BaseBlock(BlockID.AIR)); // Ice turns until water so this has to be done first
        }

        return super.setBlock(position, block);
    }

}