/*
 *   This file is a part of the SteamWar software.
 *
 *   Copyright (C) 2026 SteamWar.de-Serverteam
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 *   You should have received a copy of the GNU Affero General Public License
 *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package de.steamwar.bausystem.region;

import de.steamwar.bausystem.region.dynamic.DynamicRegion;
import de.steamwar.bausystem.region.dynamic.RegionConstructorData;
import de.steamwar.bausystem.region.dynamic.Tile;
import de.steamwar.core.SWPlayer;
import de.steamwar.entity.*;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.entity.Display;
import org.bukkit.util.Transformation;
import org.joml.Quaternionf;
import org.joml.Vector3f;

public class DynamicRegionVisualizer implements SWPlayer.Component {

    public static final DynamicRegionVisualizer INSTANCE = new DynamicRegionVisualizer();

    private final REntityServer entityServer = new REntityServer();

    private DynamicRegionVisualizer() {
        RTextDisplay text = new RTextDisplay(entityServer, new Location(null, 0.5, 1.1, 0.5));
        text.setText("Spawn");
        text.setBillboard(Display.Billboard.VERTICAL);
        text.setBackgroundColor(0);
        text.setShadowed(false);
        text.setTransform(new Transformation(new Vector3f(0, 0, 0), new Quaternionf().rotationX((float) Math.toRadians(270)), new Vector3f(1, 1, 1), new Quaternionf()));
    }

    public void addRegion(DynamicRegion region) {
        new CRegion(entityServer, region);
    }

    public void removeRegion(DynamicRegion region) {
        entityServer.getEntitiesByType(CRegion.class)
                .stream()
                .filter(cRegion -> cRegion.region == region)
                .forEach(CRegion::die);
    }

    @Override
    public void onMount(SWPlayer player) {
        entityServer.addPlayer(player.getPlayer());
    }

    @Override
    public void onUnmount(SWPlayer player) {
        entityServer.removePlayer(player.getPlayer());
    }

    private static final Vector3f VEC_ZERO = new Vector3f(0, 0, 0);
    private static final Quaternionf QUT_ZERO = new Quaternionf(0, 0, 0, 1);

    public static Point toVisualization(Location worldLocation) {
        Tile tile = Tile.fromLocation(worldLocation).orElseThrow();
        return new Point(tile.getTileX(), 0, tile.getTileZ());
    }

    private static class CRegion extends CEntity {

        private final DynamicRegion region;

        private CRegion(REntityServer server, DynamicRegion region) {
            super(server);
            this.region = region;

            RegionConstructorData data = DynamicRegionSystem.constructorDataMap.get(region.getClass());
            int widthX = data.widthX();
            int widthZ = data.widthZ();

            Point point = toVisualization(region.getArea().getMinPoint(false).toLocation((World) null));

            if (widthX != 1 || widthZ != 1) {
                CArea area = new CArea(server);
                area.setBlock(Material.WHITE_CONCRETE.createBlockData());
                area.setPos1And2(point.toLocation((World) null).add(0, 1 - CArea.DEFAULT_WIDTH, 0), point.toLocation((World) null).add(widthX - 1, 1 - CArea.DEFAULT_WIDTH, widthZ - 1));
                entities.add(area);

                RTextDisplay text = new RTextDisplay(server, point.toLocation((World) null).add(widthX / 2.0, 1.1, widthZ / 2.0));
                text.setText(data.name());
                text.setBillboard(Display.Billboard.VERTICAL);
                text.setBackgroundColor(0);
                text.setShadowed(false);
                text.setTransform(new Transformation(new Vector3f(0, 0, 0), new Quaternionf().rotationX((float) Math.toRadians(270)), new Vector3f(1, 1, 1), new Quaternionf()));
                entities.add(text);
            }

            RBlockDisplay display = new RBlockDisplay(server, point.toLocation((World) null));
            display.setTransform(new Transformation(VEC_ZERO, QUT_ZERO, new Vector3f(widthX, 1, widthZ), QUT_ZERO));
            display.setBlock(data.material().createBlockData());
            entities.add(display);
        }
    }
}