src/main/java/kr/syeyoung/dungeonsguide/dungeon/roomfinder/DungeonRoomInfoRegistry.java


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package kr.syeyoung.dungeonsguide.dungeon.roomfinder;

import kr.syeyoung.dungeonsguide.dungeon.data.DungeonRoomInfo;

import java.io.*;
import java.util.*;

public class DungeonRoomInfoRegistry {
    private static List<DungeonRoomInfo> registered = new ArrayList<DungeonRoomInfo>();
    private static Map<Short, List<DungeonRoomInfo>> shapeMap = new HashMap<Short, List<DungeonRoomInfo>>();
    private static Map<UUID, DungeonRoomInfo> uuidMap = new HashMap<UUID, DungeonRoomInfo>();

    public static void register(DungeonRoomInfo dungeonRoomInfo) {
        if (dungeonRoomInfo == null) throw new NullPointerException("what the fak parameter is noll?");
        dungeonRoomInfo.setRegistered(true);
        registered.add(dungeonRoomInfo);
        uuidMap.put(dungeonRoomInfo.getUuid(), dungeonRoomInfo);
        List<DungeonRoomInfo> roomInfos = shapeMap.get(dungeonRoomInfo.getShape());
        if (roomInfos == null) roomInfos = new ArrayList<DungeonRoomInfo>();
        roomInfos.add(dungeonRoomInfo);
        shapeMap.put(dungeonRoomInfo.getShape(), roomInfos);
    }


    public static List<DungeonRoomInfo> getByShape(Short shape) {
        List<DungeonRoomInfo> dungeonRoomInfos = shapeMap.get(shape);
        return dungeonRoomInfos == null ? Collections.<DungeonRoomInfo>emptyList() : dungeonRoomInfos;
    }

    public static DungeonRoomInfo getByUUID(UUID uid) {
        return uuidMap.get(uid);
    }

    public static void unregister(DungeonRoomInfo dungeonRoomInfo) {
        if (!dungeonRoomInfo.isRegistered()) throw new IllegalStateException("what tha fak? that is not registered one");
        if (!uuidMap.containsKey(dungeonRoomInfo.getUuid())) throw new IllegalStateException("what tha fak? that is not registered one, but you desperately wanted to trick this program");
        dungeonRoomInfo.setRegistered(false);
        registered.remove(dungeonRoomInfo);
        shapeMap.get(dungeonRoomInfo.getShape()).remove(dungeonRoomInfo);
        uuidMap.remove(dungeonRoomInfo.getUuid());
    }

    public static void saveAll(File dir) {
        dir.mkdirs();
        for (DungeonRoomInfo dungeonRoomInfo : registered) {
            try {
                FileOutputStream fos = new FileOutputStream(new File(dir, dungeonRoomInfo.getUuid().toString() + ".roomdata"));
                ObjectOutputStream oos = new ObjectOutputStream(fos);
                oos.writeObject(dungeonRoomInfo);
                oos.flush();
                oos.close();
            } catch (Exception e) {e.printStackTrace();}
        }
    }

    public static void loadAll(File dir) {
        registered.clear();
        shapeMap.clear();
        uuidMap.clear();
        for (File f: dir.listFiles()) {
            if (!f.isFile() || !f.getName().endsWith(".roomdata")) continue;
            try {
                FileInputStream fis = new FileInputStream(f);
                ObjectInputStream ois = new ObjectInputStream(fis);
                DungeonRoomInfo dri = (DungeonRoomInfo) ois.readObject();
                ois.close();
                fis.close();
                register(dri);
            } catch (Exception e) {e.printStackTrace();}
        }
    }
}