util: Add AccessControlService::getCurrentUser

In production mode, this returns the currently logged in user. In test
mode, it returns a test user.

src/main/java/org/kickerelo/kickerelo/util/AccessControlService.java

@@ -1,5 +1,13 @@
 package org.kickerelo.kickerelo.util;
 
+import org.kickerelo.kickerelo.data.AuthentikUser;
+
+import javax.annotation.Nonnull;
+import java.util.Optional;
+
 public interface AccessControlService {
     boolean userAllowedForRole(String role);
+
+    @Nonnull
+    Optional<AuthentikUser> getCurrentUser();
 }

src/main/java/org/kickerelo/kickerelo/util/AccessControlServiceProdImpl.java

@@ -1,5 +1,8 @@
 package org.kickerelo.kickerelo.util;
 
+import org.jetbrains.annotations.NotNull;
+import org.kickerelo.kickerelo.data.AuthentikUser;
+import org.kickerelo.kickerelo.repository.AuthentikUserRepository;
 import org.springframework.context.annotation.Profile;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
@@ -7,10 +10,17 @@ import org.springframework.security.oauth2.core.oidc.user.OidcUser;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
+import java.util.Optional;
 
 @Component
 @Profile("prod")
 public class AccessControlServiceProdImpl implements AccessControlService {
+    private final AuthentikUserRepository userRepository;
+
+    public AccessControlServiceProdImpl(AuthentikUserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
     @Override
     public boolean userAllowedForRole(String role) {
         // Check if authentication is present
@@ -22,7 +32,7 @@ public class AccessControlServiceProdImpl implements AccessControlService {
 
         // Get the list of groups the user is part of
         Object groupsObj = oidcUser.getClaims().getOrDefault("groups", List.of());
-        if (!(groupsObj instanceof  List<?>)) return false;
+        if (!(groupsObj instanceof List<?>)) return false;
 
         // Keep only Strings in the list
         List<String> listOfGroups = ((List<?>) groupsObj).stream()
@@ -33,4 +43,22 @@ public class AccessControlServiceProdImpl implements AccessControlService {
         // Check if the user is part of the required group
         return listOfGroups.contains(role);
     }
+
+    @NotNull
+    @Override
+    public Optional<AuthentikUser> getCurrentUser() {
+        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+        if (auth == null || !(auth.getPrincipal() instanceof OidcUser oidcUser)) {
+            return Optional.empty();
+        }
+        String id = oidcUser.getAttribute("sub");
+        if (id == null) {
+            throw new RuntimeException("Couldn't find sub attribute on current user.");
+        }
+        Optional<AuthentikUser> authentikUser = userRepository.findById(id);
+        if (authentikUser.isEmpty()) {
+            throw new RuntimeException("User is authenticated but doesn't exist in database.");
+        }
+        return authentikUser;
+    }
 }

src/main/java/org/kickerelo/kickerelo/util/AccessControlServiceTestImpl.java

@@ -1,13 +1,32 @@
 package org.kickerelo.kickerelo.util;
 
+import org.jetbrains.annotations.NotNull;
+import org.kickerelo.kickerelo.data.AuthentikUser;
+import org.kickerelo.kickerelo.repository.AuthentikUserRepository;
 import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Component;
 
+import java.util.Optional;
+
 @Component
 @Profile("test")
 public class AccessControlServiceTestImpl implements AccessControlService {
+    private final AuthentikUserRepository userRepository;
+
+    public AccessControlServiceTestImpl(AuthentikUserRepository userRepository) {
+        this.userRepository = userRepository;
+        userRepository.save(getCurrentUser().orElseThrow()); // Ensure test user exists in DB;
+    }
+
     @Override
     public boolean userAllowedForRole(String role) {
         return true;
     }
+
+    @NotNull
+    @Override
+    public Optional<AuthentikUser> getCurrentUser() {
+        Optional<AuthentikUser> user = userRepository.findById("test_profile_user");
+        return Optional.of(user.orElseGet(() -> new AuthentikUser("test_profile_user", "Test Profile User")));
+    }
 }

src/main/java/org/kickerelo/kickerelo/views/PlayerListView.java

@@ -24,6 +24,7 @@ public class PlayerListView extends VerticalLayout {
         playerGrid.setItems(players);
         playerGrid.removeColumnByKey("id");
         playerGrid.removeColumnByKey("elo_alt");
+        playerGrid.removeColumnByKey("authentikUser");
         Grid.Column<Spieler> nameColumn = playerGrid.getColumnByKey("name");
         Grid.Column<Spieler> elo1vs1Column = playerGrid.getColumnByKey("elo1vs1");
         Grid.Column<Spieler> elo2vs2Column = playerGrid.getColumnByKey("elo2vs2");