/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 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.
 *
 * Applied Energistics 2 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 Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.me.pathfinding;


import appeng.api.networking.IGridHost;
import appeng.api.networking.IGridNode;
import appeng.api.networking.IGridVisitor;
import appeng.core.AEConfig;
import appeng.tile.networking.TileController;
import net.minecraft.util.math.BlockPos;


public class ControllerValidator implements IGridVisitor {

    private boolean isValid = true;
    private int found = 0;
    private int minX;
    private int minY;
    private int minZ;
    private int maxX;
    private int maxY;
    private int maxZ;

    public ControllerValidator(final int x, final int y, final int z) {
        this.minX = x;
        this.maxX = x;
        this.minY = y;
        this.maxY = y;
        this.minZ = z;
        this.maxZ = z;
    }

    @Override
    public boolean visitNode(final IGridNode n) {
        final IGridHost host = n.getMachine();
        if (this.isValid() && host instanceof TileController) {
            final TileController c = (TileController) host;

            final BlockPos pos = c.getPos();

            this.minX = Math.min(pos.getX(), this.minX);
            this.maxX = Math.max(pos.getX(), this.maxX);
            this.minY = Math.min(pos.getY(), this.minY);
            this.maxY = Math.max(pos.getY(), this.maxY);
            this.minZ = Math.min(pos.getZ(), this.minZ);
            this.maxZ = Math.max(pos.getZ(), this.maxZ);

            if (this.maxX - this.minX < AEConfig.instance().getMaxControllerSizeX() && this.maxY - this.minY < AEConfig.instance().getMaxControllerSizeY() && this.maxZ - this.minZ < AEConfig.instance().getMaxControllerSizeZ()) {
                this.setFound(this.getFound() + 1);
                return true;
            }

            this.setValid(false);
        } else {
            return false;
        }

        return this.isValid();
    }

    public boolean isValid() {
        return this.isValid;
    }

    private void setValid(final boolean isValid) {
        this.isValid = isValid;
    }

    public int getFound() {
        return this.found;
    }

    private void setFound(final int found) {
        this.found = found;
    }
}