Add nickname retrieval support: implemented NicknameMapper for database queries, updated ChatService to return player names with optional nicknames, and extended /chat/player/{uuid}/name API endpoint.

database/src/main/java/com/alttd/altitudeweb/setup/Connection.java

@@ -144,6 +144,26 @@ public class Connection {
         }).start();
     }
 
+    public <T> T runQueryWithResult(QueryFunction<T> function) {
+        if (sqlSessionFactory == null) {
+            sqlSessionFactory = createSqlSessionFactory(settings, addMappers);
+        }
+
+        try (SqlSession session = sqlSessionFactory.openSession()) {
+            T result = function.apply(session);
+            session.commit();
+            return result;
+        } catch (Exception e) {
+            log.error("Failed to run query", e);
+            throw e;
+        }
+    }
+
+    @FunctionalInterface
+    public interface QueryFunction<T> {
+        T apply(SqlSession session);
+    }
+
     private SqlSessionFactory createSqlSessionFactory(DatabaseSettings settings, AddMappers addMappers) {
         try {
             Configuration configuration = getConfiguration(settings);