From 01934b76f3005d24cfe6fefbfc935764d2944f4a Mon Sep 17 00:00:00 2001
From: Lars Simon Winzer <lars.winzer@stud.unibas.ch>
Date: Wed, 8 Apr 2026 19:12:36 +0200
Subject: [PATCH] Refactor: Existing handler to using constructor of superclass

---
 .../server/app/commands/check_nick/CheckUsernameHandler.java   | 3 +--
 .../cs108/casono/server/app/commands/login/LoginHandler.java   | 3 +--
 .../cs108/casono/server/app/commands/logout/LogoutHandler.java | 3 +--
 .../cs108/casono/server/app/commands/ping/PingHandler.java     | 3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
index 95debb0..0c70e55 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
@@ -8,7 +8,6 @@ import java.util.Optional;
 
 /** Handles {@link CheckUsernameRequest}s to check whether a username is available. */
 public class CheckUsernameHandler extends CommandHandler<CheckUsernameRequest> {
-    private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
 
     /**
@@ -18,7 +17,7 @@ public class CheckUsernameHandler extends CommandHandler<CheckUsernameRequest> {
      * @param userRegistry the registry used to look up existing users
      */
     public CheckUsernameHandler(ResponseDispatcher responseDispatcher, UserRegistry userRegistry) {
-        this.responseDispatcher = responseDispatcher;
+        super(responseDispatcher);
         this.userRegistry = userRegistry;
     }
 
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
index 4215b3b..5f455ca 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
@@ -14,7 +14,6 @@ import java.util.Optional;
  * already
  */
 public class LoginHandler extends CommandHandler<LoginRequest> {
-    private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
     private final UserFactory userFactory;
 
@@ -25,7 +24,7 @@ public class LoginHandler extends CommandHandler<LoginRequest> {
      * @param userRegistry the registry used to look up existing users and create the new one
      */
     public LoginHandler(ResponseDispatcher responseDispatcher, UserRegistry userRegistry) {
-        this.responseDispatcher = responseDispatcher;
+        super(responseDispatcher);
         this.userRegistry = userRegistry;
         this.userFactory = new UserFactory(userRegistry);
     }
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
index 4ef9f98..199c207 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
@@ -8,7 +8,6 @@ import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatch
 
 /** Handles {@link LogoutRequest} to logout connected user. */
 public class LogoutHandler extends CommandHandler<LogoutRequest> {
-    private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
 
     /**
@@ -18,7 +17,7 @@ public class LogoutHandler extends CommandHandler<LogoutRequest> {
      * @param userRegistry registry responsible for tracking connected user sessions
      */
     public LogoutHandler(ResponseDispatcher responseDispatcher, UserRegistry userRegistry) {
-        this.responseDispatcher = responseDispatcher;
+        super(responseDispatcher);
         this.userRegistry = userRegistry;
     }
 
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
index aed42e5..69f389e 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
@@ -6,7 +6,6 @@ import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatch
 
 /** Handler for {@link PingRequest}. */
 public class PingHandler extends CommandHandler<PingRequest> {
-    private final ResponseDispatcher responseDispatcher;
 
     /**
      * Create a new PingHandler to execute {@link PingRequest}s
@@ -14,7 +13,7 @@ public class PingHandler extends CommandHandler<PingRequest> {
      * @param responseDispatcher dispatcher used to send responses back to clients
      */
     public PingHandler(ResponseDispatcher responseDispatcher) {
-        this.responseDispatcher = responseDispatcher;
+        super(responseDispatcher);
     }
 
     /**