Implementation of publication deletion.

codiki-application/src/main/java/org/codiki/application/publication/PublicationUseCases.java

@@ -123,4 +123,18 @@ public class PublicationUseCases {
 
         return updatedPublication;
     }
+
+    public void deletePublication(UUID publicationId) {
+        Publication publicationToDelete = publicationPort.findById(publicationId)
+            .orElseThrow(() -> new PublicationNotFoundException(publicationId));
+
+        User authenticatedUser = userUseCases.getAuthenticatedUser()
+            .orElseThrow(AuthenticationRequiredException::new);
+
+        if (!publicationToDelete.author().id().equals(authenticatedUser.id())) {
+            throw new PublicationUpdateForbiddenException();
+        }
+
+        publicationPort.delete(publicationToDelete);
+    }
 }