Script utilisé pour passer les données joueur du serveur offline au serveur online

Main.java

import com.google.common.base.Charsets;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;

public class Main {

    public static void main(String[] args) {
        Map<String, String> playerMap = getPlayerMap();

        System.out.println("Map length : " + playerMap.size());

        File[] directories = new File("./data").listFiles(File::isDirectory);

        for (File directory : directories) {
            System.out.println("Dossier " + directory.getName());
            File[] fileList = directory.listFiles();

            for (File file : fileList) {
                String baseName = getBaseName(file.getName());
                String extension = getFileExtension(file.getName());

                if (!playerMap.containsKey(baseName)) {
                    System.out.println("Fichier " + file.getName() + " supprimé");
                    file.delete();
                } else {
                    String newName = playerMap.get(baseName);
                    renameFile(file.getPath(), newName + extension);
                    System.out.println(file.getName() + " renommé en " + newName + extension);
                }
            }
        }

    }

    public static ArrayList<String> getPlayerList() {
        ArrayList<String> playerList = new ArrayList<>();

        try {
            FileInputStream fstream = new FileInputStream("playerList.txt");
            BufferedReader br = new BufferedReader(new InputStreamReader(fstream));

            String strLine;

            while ((strLine = br.readLine()) != null) {
                playerList.add(strLine);
            }

            br.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return playerList;
    }

    public static Map<String, String> getPlayerMap() {
        Map<String, String> playerMap = new HashMap<>();
        ArrayList<String> playerList = getPlayerList();

        for (String player : playerList) {
            String offlineUUID = getOfflineUUID(player);
            String onlineUUID = getOnlineUUID(player);
            playerMap.put(offlineUUID, onlineUUID);
        }

        return playerMap;
    }

    public static String getOfflineUUID(String username) {
        UUID offlineUUID = UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(Charsets.UTF_8));
        return offlineUUID.toString();
    }

    public static String getOnlineUUID(String username) {
        String uuid = null;
        URL url = null;

        try {
            url = new URL("https://api.mojang.com/users/profiles/minecraft/" + username);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }

        try {
            URLConnection connection = url.openConnection();
            Scanner jsonScanner = new Scanner(connection.getInputStream(), "UTF-8");
            String json = jsonScanner.next();
            JsonObject jsonObject = new JsonParser().parse(json).getAsJsonObject();
            uuid = jsonObject.get("id").getAsString();
            jsonScanner.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return getLongUUID(uuid);
    }

    public static String getLongUUID(String shortUUID) {
        StringBuilder stringBuilder = new StringBuilder(shortUUID);
        stringBuilder.insert(20, '-');
        stringBuilder.insert(16, '-');
        stringBuilder.insert(12, '-');
        stringBuilder.insert(8, '-');
        return stringBuilder.toString();
    }

    public static String getFileExtension(String fileName) {
        try {
            return fileName.substring(fileName.lastIndexOf("."));
        } catch (Exception e) {
            return "";
        }
    }

    public static String getBaseName(String fileName) {
        int index = fileName.lastIndexOf('.');
        if (index == -1) {
            return fileName;
        } else {
            return fileName.substring(0, index);
        }
    }

    public static void renameFile(String path, String newName) {
        Path source = Paths.get(path);
        try {
            Files.move(source,  source.resolveSibling(newName));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


}