1 files changed, 50 insertions, 0 deletions
diff --git a/lib/api/resource_state_events.rb b/lib/api/resource_state_events.rb
new file mode 100644
index 00000000000..1c1a90c09a3
--- /dev/null
+++ b/lib/api/resource_state_events.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module API
+  class ResourceStateEvents < Grape::API::Instance
+    include PaginationParams
+    helpers ::API::Helpers::NotesHelpers
+
+    before { authenticate! }
+
+    [Issue, MergeRequest].each do |eventable_class|
+      eventable_name = eventable_class.to_s.underscore
+
+      params do
+        requires :id, type: String, desc: "The ID of a project"
+      end
+      resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
+        desc "Get a list of #{eventable_class.to_s.downcase} resource state events" do
+          success Entities::ResourceStateEvent
+        end
+        params do
+          requires :eventable_iid, types: Integer, desc: "The IID of the #{eventable_name}"
+          use :pagination
+        end
+
+        get ":id/#{eventable_name.pluralize}/:eventable_iid/resource_state_events" do
+          eventable = find_noteable(eventable_class, params[:eventable_iid])
+
+          events = ResourceStateEventFinder.new(current_user, eventable).execute
+
+          present paginate(events), with: Entities::ResourceStateEvent
+        end
+
+        desc "Get a single #{eventable_class.to_s.downcase} resource state event" do
+          success Entities::ResourceStateEvent
+        end
+        params do
+          requires :eventable_iid, types: Integer, desc: "The IID of the #{eventable_name}"
+          requires :event_id, type: Integer, desc: 'The ID of a resource state event'
+        end
+        get ":id/#{eventable_name.pluralize}/:eventable_iid/resource_state_events/:event_id" do
+          eventable = find_noteable(eventable_class, params[:eventable_iid])
+
+          event = ResourceStateEventFinder.new(current_user, eventable).find(params[:event_id])
+
+          present event, with: Entities::ResourceStateEvent
+        end
+      end
+    end
+  end
+end