KingdomClashSurvival/src/main/java/de/winniepat/kingdomClashSurvival/managers/StarterKitManager.java

package de.winniepat.kingdomClashSurvival.managers;

import de.winniepat.kingdomClashSurvival.KingdomClashSurvival;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardOpenOption;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import java.util.stream.Collectors;

public class StarterKitManager {

    private final KingdomClashSurvival plugin;
    private final File dataFile;
    private final Set<UUID> claimedPlayers = new HashSet<>();

    public StarterKitManager(KingdomClashSurvival plugin) {
        this.plugin = plugin;
        this.dataFile = new File(plugin.getDataFolder(), "claimed_starter_kits.txt");
        loadData();
    }

    public void loadData() {
        if (!dataFile.exists()) {
            if (!plugin.getDataFolder().exists()) {
                plugin.getDataFolder().mkdirs();
            }
            try {
                dataFile.createNewFile();
            } catch (IOException e) {
                plugin.getLogger().severe("Could not create claimed_starter_kits.txt: " + e.getMessage());
            }
            return;
        }

        try {
            claimedPlayers.clear();
            Files.lines(dataFile.toPath())
                    .map(String::trim)
                    .filter(s -> !s.isEmpty())
                    .map(line -> {
                        try {
                            return UUID.fromString(line);
                        } catch (IllegalArgumentException e) {
                            plugin.getLogger().warning("Invalid UUID found in data file: " + line);
                            return null;
                        }
                    })
                    .filter(uuid -> uuid != null)
                    .forEach(claimedPlayers::add);

            plugin.getLogger().info("Loaded " + claimedPlayers.size() + " claimed starter kits.");
        } catch (IOException e) {
            plugin.getLogger().severe("Could not load claimed starter kits data: " + e.getMessage());
        }
    }

    public void saveData() {
        List<String> uuidStrings = claimedPlayers.stream()
                .map(UUID::toString)
                .collect(Collectors.toList());

        try {
            Files.write(dataFile.toPath(), uuidStrings,
                    StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
        } catch (IOException e) {
            plugin.getLogger().severe("Could not save claimed starter kits data: " + e.getMessage());
        }
    }

    public boolean hasClaimed(UUID playerId) {
        return claimedPlayers.contains(playerId);
    }

    public void setClaimed(UUID playerId) {
        claimedPlayers.add(playerId);
        saveData();
    }
}