/*
 * 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.worldedit.command.tool;

import com.sk89q.worldedit.EditSession;
import com.sk89q.worldedit.LocalConfiguration;
import com.sk89q.worldedit.LocalSession;
import com.sk89q.worldedit.MaxChangedBlocksException;
import com.sk89q.worldedit.entity.Player;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.extension.platform.Platform;
import com.sk89q.worldedit.extent.inventory.BlockBag;
import com.sk89q.worldedit.function.mask.Mask;
import com.sk89q.worldedit.math.BlockVector3;
import com.sk89q.worldedit.util.Direction;
import com.sk89q.worldedit.util.Location;
import com.sk89q.worldedit.world.block.BlockStateHolder;

import javax.annotation.Nullable;

public class StackTool implements BlockTool {

    private final int range;
    private final Mask mask;

    public StackTool(int range, Mask mask) {
        this.range = range;
        this.mask = mask;
    }

    @Override
    public boolean actPrimary(
            Platform server,
            LocalConfiguration config,
            Player player,
            LocalSession session,
            Location clicked,
            @Nullable Direction face
    ) {
        if (face == null) {
            return false;
        }
        BlockBag bag = session.getBlockBag(player);

        try (EditSession editSession = session.createEditSession(player)) {
            BlockStateHolder<?> block = editSession.getFullBlock(clicked.toVector().toBlockPoint());

            try {
                BlockVector3 position = clicked.toVector().toBlockPoint();
                for (int i = 0; i < range; i++) {
                    position = position.add(face.toBlockVector());
                    if (!mask.test(position)) {
                        break;
                    }
                    editSession.setBlock(position, block);
                }
            } catch (MaxChangedBlocksException ignored) {
            } finally {
                session.remember(editSession);
            }
        } finally {
            if (bag != null) {
                bag.flushChanges();
            }
        }

        return true;
    }

    @Override
    public boolean canUse(Actor actor) {
        return actor.hasPermission("worldedit.tool.stack");
    }

}
