Update from Git Manager GUI

src/main/java/de/mviper/adventskalender/MySQLManager.java

@@ -0,0 +1,66 @@
+package de.mviper.adventskalender;
+
+import org.bukkit.configuration.file.FileConfiguration;
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+public class MySQLManager {
+
+    private static Connection connection;
+
+    public static void connect() {
+        FileConfiguration config = Adventskalender.getInstance().getConfig();
+        String host = config.getString("mysql.host");
+        int port = config.getInt("mysql.port");
+        String database = config.getString("mysql.database");
+        String user = config.getString("mysql.user");
+        String password = config.getString("mysql.password");
+
+        try {
+            if (connection != null && !connection.isClosed()) return;
+            
+            synchronized (MySQLManager.class) {
+                Class.forName("com.mysql.jdbc.Driver");
+                connection = DriverManager.getConnection("jdbc:mysql://" + host + ":" + port + "/" + database + "?autoReconnect=true&useSSL=false", user, password);
+            }
+            
+            createTables();
+            Adventskalender.getInstance().getLogger().info("MySQL-Verbindung erfolgreich hergestellt!");
+        } catch (Exception e) {
+            Adventskalender.getInstance().getLogger().severe("MySQL-Verbindung fehlgeschlagen: " + e.getMessage());
+        }
+    }
+
+    private static void createTables() {
+        try (Statement s = connection.createStatement()) {
+            // Tabelle für Einzelspieler-Daten
+            s.executeUpdate("CREATE TABLE IF NOT EXISTS advent_players (uuid VARCHAR(36), day INT, PRIMARY KEY(uuid, day))");
+            // Tabelle für globalen Modus
+            s.executeUpdate("CREATE TABLE IF NOT EXISTS advent_global (day INT PRIMARY KEY, player_name VARCHAR(16))");
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static boolean isConnected() {
+        try {
+            return connection != null && !connection.isClosed();
+        } catch (SQLException e) {
+            return false;
+        }
+    }
+
+    public static void close() {
+        try {
+            if (isConnected()) connection.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static Connection getConnection() {
+        return connection;
+    }
+}