Added set current user

src/main/java/NTNU/IDATT1002/controllers/Login.java

@@ -3,6 +3,8 @@ package NTNU.IDATT1002.controllers;
 import java.io.IOException;
 
 import NTNU.IDATT1002.App;
+import NTNU.IDATT1002.ApplicationState;
+import NTNU.IDATT1002.models.User;
 import NTNU.IDATT1002.service.UserService;
 import javafx.event.ActionEvent;
 import javafx.scene.control.Button;

src/main/java/NTNU/IDATT1002/service/UserService.java

 package NTNU.IDATT1002.service;
 
+import NTNU.IDATT1002.App;
 import NTNU.IDATT1002.ApplicationState;
 import NTNU.IDATT1002.models.Login;
 import NTNU.IDATT1002.models.User;
@@ -70,7 +71,10 @@ public class UserService {
             if (login.isPresent()) {
                 String salt = login.get().getPasswordSalt();
                 String hash = login.get().getHash();
-                return Authentication.isCorrectPassword(salt, password, hash);
+                if(Authentication.isCorrectPassword(salt, password, hash)) {
+                    ApplicationState.setCurrentUser(login.get().getUser());
+                    return true;
+                }
             }
         }
         catch (IllegalArgumentException e) {