move to scm-webapp

scm-webapp/src/main/java/sonia/scm/user/AnonymousUserDeletionEventHandler.java

@@ -0,0 +1,36 @@
+package sonia.scm.user;
+
+import com.github.legman.Subscribe;
+import sonia.scm.ContextEntry;
+import sonia.scm.EagerSingleton;
+import sonia.scm.HandlerEventType;
+import sonia.scm.SCMContext;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.plugin.Extension;
+
+import javax.inject.Inject;
+
+@EagerSingleton
+@Extension
+public class AnonymousUserDeletionEventHandler {
+
+  private ScmConfiguration scmConfiguration;
+
+  @Inject
+  public AnonymousUserDeletionEventHandler(ScmConfiguration scmConfiguration) {
+    this.scmConfiguration = scmConfiguration;
+  }
+
+  @Subscribe(async = false)
+  public void onEvent(UserEvent event) {
+    if (isAnonymousUserDeletionNotAllowed(event)) {
+      throw new AnonymousUserDeletionException(ContextEntry.ContextBuilder.entity(User.class, event.getItem().getId()));
+    }
+  }
+
+  private boolean isAnonymousUserDeletionNotAllowed(UserEvent event) {
+    return event.getEventType() == HandlerEventType.BEFORE_DELETE
+      && event.getItem().getName().equals(SCMContext.USER_ANONYMOUS)
+      && scmConfiguration.isAnonymousAccessEnabled();
+  }
+}