import com.fastasyncworldedit.core.queue.implementation.ParallelQueueExtent;
import com.google.common.base.Preconditions;
import com.sk89q.worldedit.MaxChangedBlocksException;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.event.extent.EditSessionEvent;
import com.sk89q.worldedit.function.RegionMaskingFilter;
import com.sk89q.worldedit.function.block.BlockReplace;
import com.sk89q.worldedit.function.mask.Mask;
import com.sk89q.worldedit.function.operation.Operations;
import com.sk89q.worldedit.function.pattern.Pattern;
import com.sk89q.worldedit.function.visitor.RegionVisitor;
import com.sk89q.worldedit.math.BlockVector3;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.world.block.BaseBlock;
import com.sk89q.worldedit.world.block.BlockStateHolder;
import java.util.Set;
import org.bukkit.Bukkit;

public class FaweCustomBlocksExtent extends AbstractCustomBlockExtent {

    public FaweCustomBlocksExtent(EditSessionEvent event) {
        super(event);
    }

    public <T extends BlockStateHolder<T>> boolean setBlock(int n, int n2, int n3, T t) {
        Result result = this.setBlockInternal(n, n2, n3, t);

        if (result == Result.SUCCESS) {
            return true;
        }

        return this.getExtent().setBlock(n, n2, n3, t);
    }

    @Override
    public <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 position, T block) throws WorldEditException {
        return this.setBlock(position.getX(), position.getY(), position.getZ(), block);
    }

    @Override
    public int replaceBlocks(Region region, Mask mask, Pattern pattern) throws MaxChangedBlocksException {
        return replace(region, mask, pattern);
    }

    private int replace(Region region, Mask mask, Pattern pattern) throws MaxChangedBlocksException {
        Preconditions.checkNotNull(region);
        Preconditions.checkNotNull(mask);
        Preconditions.checkNotNull(pattern);
        BlockReplace replace = new BlockReplace(this, pattern);
        RegionMaskingFilter filter = new RegionMaskingFilter(this, mask, replace);
        RegionVisitor visitor = new RegionVisitor(region, filter, this);
        Operations.completeLegacy(visitor);
        return visitor.getAffected();
    }

    @Override
    public int setBlocks(Region region, Pattern pattern) throws MaxChangedBlocksException {
        int changes = 0;

        for (BlockVector3 pos : region) {
            if (pattern.apply(this, pos, pos)) {
                ++changes;
            }
        }

        return changes;
    }
}