1 files changed, 51 insertions, 18 deletions

diff --git a/lib/api/notes.rb b/lib/api/notes.rb
index 174473f5371..8bfa998dc53 100644
--- a/lib/api/notes.rb
+++ b/lib/api/notes.rb
@@ -19,20 +19,24 @@ module API
         #   GET /projects/:id/issues/:noteable_id/notes
         #   GET /projects/:id/snippets/:noteable_id/notes
         get ":id/#{noteables_str}/:#{noteable_id_str}/notes" do
-          @noteable = user_project.send(:"#{noteables_str}").find(params[:"#{noteable_id_str}"])
-
-          # We exclude notes that are cross-references and that cannot be viewed
-          # by the current user. By doing this exclusion at this level and not
-          # at the DB query level (which we cannot in that case), the current
-          # page can have less elements than :per_page even if
-          # there's more than one page.
-          notes =
-            # paginate() only works with a relation. This could lead to a
-            # mismatch between the pagination headers info and the actual notes
-            # array returned, but this is really a edge-case.
-            paginate(@noteable.notes).
-            reject { |n| n.cross_reference_not_visible_for?(current_user) }
-          present notes, with: Entities::Note
+          @noteable = user_project.send(noteables_str.to_sym).find(params[noteable_id_str.to_sym])
+
+          if can?(current_user, noteable_read_ability_name(@noteable), @noteable)
+            # We exclude notes that are cross-references and that cannot be viewed
+            # by the current user. By doing this exclusion at this level and not
+            # at the DB query level (which we cannot in that case), the current
+            # page can have less elements than :per_page even if
+            # there's more than one page.
+            notes =
+              # paginate() only works with a relation. This could lead to a
+              # mismatch between the pagination headers info and the actual notes
+              # array returned, but this is really a edge-case.
+              paginate(@noteable.notes).
+              reject { |n| n.cross_reference_not_visible_for?(current_user) }
+            present notes, with: Entities::Note
+          else
+            not_found!("Notes")
+          end
         end
 
         # Get a single +noteable+ note
@@ -45,13 +49,14 @@ module API
         #   GET /projects/:id/issues/:noteable_id/notes/:note_id
         #   GET /projects/:id/snippets/:noteable_id/notes/:note_id
         get ":id/#{noteables_str}/:#{noteable_id_str}/notes/:note_id" do
-          @noteable = user_project.send(:"#{noteables_str}").find(params[:"#{noteable_id_str}"])
+          @noteable = user_project.send(noteables_str.to_sym).find(params[noteable_id_str.to_sym])
           @note = @noteable.notes.find(params[:note_id])
+          can_read_note = can?(current_user, noteable_read_ability_name(@noteable), @noteable) && !@note.cross_reference_not_visible_for?(current_user)
 
-          if @note.cross_reference_not_visible_for?(current_user)
-            not_found!("Note")
-          else
+          if can_read_note
             present @note, with: Entities::Note
+          else
+            not_found!("Note")
           end
         end
 
@@ -61,6 +66,7 @@ module API
         #   id (required) - The ID of a project
         #   noteable_id (required) - The ID of an issue or snippet
         #   body (required) - The content of a note
+        #   created_at (optional) - The date
         # Example Request:
         #   POST /projects/:id/issues/:noteable_id/notes
         #   POST /projects/:id/snippets/:noteable_id/notes
@@ -73,6 +79,10 @@ module API
            noteable_id: params[noteable_id_str]
           }
 
+          if params[:created_at] && (current_user.is_admin? || user_project.owner == current_user)
+            opts[:created_at] = params[:created_at]
+          end
+
           @note = ::Notes::CreateService.new(user_project, current_user, opts).execute
 
           if @note.valid?
@@ -112,6 +122,29 @@ module API
           end
         end
 
+        # Delete a +noteable+ note
+        #
+        # Parameters:
+        #   id (required) - The ID of a project
+        #   noteable_id (required) - The ID of an issue, MR, or snippet
+        #   node_id (required) - The ID of a note
+        # Example Request:
+        #   DELETE /projects/:id/issues/:noteable_id/notes/:note_id
+        #   DELETE /projects/:id/snippets/:noteable_id/notes/:node_id
+        delete ":id/#{noteables_str}/:#{noteable_id_str}/notes/:note_id" do
+          note = user_project.notes.find(params[:note_id])
+          authorize! :admin_note, note
+
+          ::Notes::DeleteService.new(user_project, current_user).execute(note)
+
+          present note, with: Entities::Note
+        end
+      end
+    end
+
+    helpers do
+      def noteable_read_ability_name(noteable)
+        "read_#{noteable.class.to_s.underscore}".to_sym
       end
     end
   end