/*
 * This file is a part of the SteamWar software.
 *
 * Copyright (C) 2020  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.BauSystem;
import de.steamwar.bausystem.region.dynamic.MovementListener;
import de.steamwar.bausystem.region.dynamic.Tile;
import de.steamwar.bausystem.region.dynamic.global.GlobalRegion;
import lombok.NonNull;
import org.bukkit.Bukkit;
import org.bukkit.Location;

import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.UUID;
import java.util.stream.Stream;

public class DynamicRegionSystem implements RegionSystem {

    public static DynamicRegionSystem INSTANCE;

    private static Map<Tile, UUID> tileMap = new HashMap<>();
    private static Map<UUID, Region> regionMap = new HashMap<>();

    @Override
    public void load() {
        INSTANCE = this;
        Bukkit.getPluginManager().registerEvents(new MovementListener(), BauSystem.getInstance());
    }

    @Override
    public void save() {
    }

    @Override
    public @NonNull Location getWorldSpawn() {
        return new Location(Bukkit.getWorlds().get(0), 0, 0, 0);
    }

    @Override
    public @NonNull Region getGlobalRegion() {
        return GlobalRegion.INSTANCE;
    }

    @Override
    public @NonNull Region get(@NonNull Location location) {
        Optional<Tile> tile = Tile.fromLocation(location);
        if (tile.isEmpty()) return GlobalRegion.INSTANCE;
        UUID uuid = tileMap.get(tile.get());
        if (uuid == null) return GlobalRegion.INSTANCE;
        return regionMap.getOrDefault(uuid, GlobalRegion.INSTANCE);
    }

    @Override
    public Optional<Region> getRegion(@NonNull UUID id) {
        return Optional.ofNullable(regionMap.get(id));
    }

    @Override
    public @NonNull Stream<Region> getRegions() {
        return regionMap.values().stream();
    }

    @Override
    public boolean isModular() {
        return true;
    }
}