1 files changed, 59 insertions, 0 deletions
diff --git a/app/services/integrations/group_mention_service.rb b/app/services/integrations/group_mention_service.rb
new file mode 100644
index 00000000000..2389bf33432
--- /dev/null
+++ b/app/services/integrations/group_mention_service.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+# GroupMentionService class
+#
+# Used for sending group mention notifications
+#
+# Ex.
+#   Integrations::GroupMentionService.new(mentionable, hook_data: data, is_confidential: true).execute
+#
+module Integrations
+  class GroupMentionService
+    def initialize(mentionable, hook_data:, is_confidential:)
+      @mentionable = mentionable
+      @hook_data = hook_data
+      @is_confidential = is_confidential
+    end
+
+    def execute
+      return ServiceResponse.success if mentionable.nil? || hook_data.nil?
+
+      @hook_data = hook_data.clone
+      # Fake a "group_mention" object kind so integrations can handle this as a separate class of event
+      hook_data[:object_attributes][:object_kind] = hook_data[:object_kind]
+      hook_data[:object_kind] = 'group_mention'
+
+      if confidential?
+        hook_data[:event_type] = 'group_confidential_mention'
+        hook_scope = :group_confidential_mention_hooks
+      else
+        hook_data[:event_type] = 'group_mention'
+        hook_scope = :group_mention_hooks
+      end
+
+      groups = mentionable.referenced_groups(mentionable.author)
+      groups.each do |group|
+        group_hook_data = hook_data.merge(
+          mentioned: {
+            object_kind: 'group',
+            name: group.full_path,
+            url: group.web_url
+          }
+        )
+        group.execute_integrations(group_hook_data, hook_scope)
+      end
+
+      ServiceResponse.success
+    end
+
+    private
+
+    attr_reader :mentionable, :hook_data, :is_confidential
+
+    def confidential?
+      return is_confidential if is_confidential.present?
+
+      mentionable.project.visibility_level != Gitlab::VisibilityLevel::PUBLIC
+    end
+  end
+end