Namespaces API for admin users

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

lib/api/api.rb

@@ -40,5 +40,6 @@ module API
     mount ProjectHooks
     mount Services
     mount Files
+    mount Namespaces
   end
 end

lib/api/entities.rb

@@ -136,5 +136,9 @@ module API
       expose :target_id, :target_type, :author_id
       expose :data, :target_title
     end
+
+    class Namespace < Grape::Entity
+      expose :id, :path, :kind
+    end
   end
 end

lib/api/namespaces.rb

+module API
+  # namespaces API
+  class Namespaces < Grape::API
+    before {
+      authenticate!
+      authenticated_as_admin!
+    }
+
+    resource :namespaces do
+      # Get a namespaces list
+      #
+      # Example Request:
+      #  GET /namespaces
+      get do
+        @namespaces = Namespace.scoped
+        @namespaces = @namespaces.search(params[:search]) if params[:search].present?
+        @namespaces = paginate @namespaces
+
+        present @namespaces, with: Entities::Namespace
+      end
+    end
+  end
+end