Set the hello world view as default route (#61)

Defines and registers a default route ("") in Vaadin.

Also in this commit:
* fix email validation exception leak to the log

Author: sven1103

webapp/frontend/generated/vaadin.ts

@@ -2,5 +2,7 @@ import './vaadin-featureflags.ts';
 
 import './index';
 
+import '@vaadin/flow-frontend/VaadinDevmodeGizmo.js';
+
 import { applyTheme } from './theme';
 applyTheme(document);

webapp/src/main/java/life/qbic/security/UserDetailsServiceImpl.java

@@ -3,6 +3,7 @@
 import java.util.ArrayList;
 import java.util.List;
 import life.qbic.identityaccess.domain.user.EmailAddress;
+import life.qbic.identityaccess.domain.user.EmailAddress.EmailValidationException;
 import life.qbic.identityaccess.domain.user.User;
 import life.qbic.identityaccess.domain.user.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -24,7 +25,15 @@ public class UserDetailsServiceImpl implements UserDetailsService {
 
   @Override
   public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
-    var user = userRepository.findByEmail(EmailAddress.from(username));
+    EmailAddress email;
+    // Check if the email address is valid
+    try {
+      email = EmailAddress.from(username);
+    } catch (EmailValidationException e) {
+      throw new UsernameNotFoundException("Cannot find user");
+    }
+    // Then search for a user with the provided email address
+    var user = userRepository.findByEmail(email);
     return new QbicUserDetails(
         user.orElseThrow(() -> new UsernameNotFoundException("Cannot find user")));
   }

webapp/src/main/java/life/qbic/views/helloworld/HelloWorldView.java

@@ -15,7 +15,7 @@
 import org.springframework.beans.factory.annotation.Autowired;
 
 @PageTitle("Hello World")
-@Route(value = "hello", layout = MainLayout.class)
+@Route(value = "", layout = MainLayout.class)
 @PermitAll
 public class HelloWorldView extends VerticalLayout {
 

webapp/src/main/java/life/qbic/views/login/LoginHandler.java

@@ -83,7 +83,7 @@ private void addListener() {
 
   private void onLoginSucceeded() {
     clearNotifications();
-    UI.getCurrent().navigate("/hello");
+    UI.getCurrent().navigate("/");
   }
 
   @Override