API: list wall, snippet and issue notes

lib/api/entities.rb

@@ -70,8 +70,10 @@ module Gitlab
     end
 
     class Note < Grape::Entity
+      expose :id
+      expose :note, as: :body
       expose :author, using: Entities::UserBasic
-      expose :note
+      expose :updated_at, :created_at
     end
   end
 end

lib/api/notes.rb

@@ -0,0 +1,38 @@
+module Gitlab
+  # Notes API
+  class Notes < Grape::API
+    before { authenticate! }
+
+    NOTEABLE_TYPES = [Issue, Snippet]
+
+    resource :projects do
+      # Get a list of project wall notes
+      #
+      # Parameters:
+      #   id (required) - The ID or code name of a project
+      # Example Request:
+      #   GET /projects/:id/notes
+      get ":id/notes" do
+        @notes = user_project.common_notes
+        present paginate(@notes), with: Entities::Note
+      end
+
+      NOTEABLE_TYPES.each do |noteable_type|
+        noteables_str = noteable_type.to_s.underscore.pluralize
+        noteable_id_str = "#{noteable_type.to_s.underscore}_id"
+
+        # Get a list of project +noteable+ notes
+        #
+        # Parameters:
+        #   id (required) - The ID or code name of a project
+        #   noteable_id (required) - The ID of an issue or snippet
+        # Example Request:
+        #   GET /projects/:id/noteable/:noteable_id/notes
+        get ":id/#{noteables_str}/:#{noteable_id_str}/notes" do
+          @noteable = user_project.send(:"#{noteables_str}").find(params[:"#{noteable_id_str}"])
+          present paginate(@noteable.notes), with: Entities::Note
+        end
+      end
+    end
+  end
+end