Log in through AccountService on player login

src/main/java/client/Client.java

@@ -621,9 +621,11 @@ public class Client extends ChannelInboundHandlerAdapter {
         } else if (newState == LoginState.SERVER_TRANSITION) {
             loggedIn = false;
             inServerTransition = true;
-        } else {
+        } else if (newState == LoginState.LOGGED_IN) {
             loggedIn = true;
             inServerTransition = false;
+        } else {
+            throw new IllegalArgumentException("Invalid login state: " + newState);
         }
     }
 

src/main/java/net/server/channel/handlers/PlayerLoggedinHandler.java

@@ -205,7 +205,7 @@ public final class PlayerLoggedinHandler extends AbstractPacketHandler {
 
                     return;
                 }
-                c.updateLoginState(LoginState.LOGGED_IN);
+                accountService.logIn(c);
             } finally {
                 releaseAccount(accId);
             }

src/main/java/service/AccountService.java

@@ -215,7 +215,8 @@ public class AccountService {
 
     public boolean logIn(Client c) {
         byte newState = LoginState.LOGGED_IN;
-        if (c.getLoginState() != LoginState.NOT_LOGGED_IN) {
+        int currentState = c.getLoginState();
+        if (currentState != LoginState.NOT_LOGGED_IN && currentState != LoginState.SERVER_TRANSITION) {
             return false;
         }