1 files changed, 101 insertions, 0 deletions
diff --git a/lib/sidebars/groups/menus/issues_menu.rb b/lib/sidebars/groups/menus/issues_menu.rb
new file mode 100644
index 00000000000..95641c09076
--- /dev/null
+++ b/lib/sidebars/groups/menus/issues_menu.rb
@@ -0,0 +1,101 @@
+# frozen_string_literal: true
+
+module Sidebars
+  module Groups
+    module Menus
+      class IssuesMenu < ::Sidebars::Menu
+        include Gitlab::Utils::StrongMemoize
+
+        override :configure_menu_items
+        def configure_menu_items
+          return unless can?(context.current_user, :read_group_issues, context.group)
+
+          add_item(list_menu_item)
+          add_item(boards_menu_item)
+          add_item(milestones_menu_item)
+
+          true
+        end
+
+        override :link
+        def link
+          issues_group_path(context.group)
+        end
+
+        override :title
+        def title
+          _('Issues')
+        end
+
+        override :sprite_icon
+        def sprite_icon
+          'issues'
+        end
+
+        override :has_pill?
+        def has_pill?
+          true
+        end
+
+        override :pill_count
+        def pill_count
+          strong_memoize(:pill_count) do
+            count_service = ::Groups::OpenIssuesCountService
+            count = count_service.new(context.group, context.current_user).count
+
+            format_cached_count(count_service, count)
+          end
+        end
+
+        override :pill_html_options
+        def pill_html_options
+          {
+            class: 'issue_counter'
+          }
+        end
+
+        private
+
+        def list_menu_item
+          ::Sidebars::MenuItem.new(
+            title: _('List'),
+            link: issues_group_path(context.group),
+            active_routes: { path: 'groups#issues' },
+            container_html_options: { aria: { label: _('Issues') } },
+            item_id: :issue_list
+          )
+        end
+
+        def boards_menu_item
+          unless can?(context.current_user, :read_group_boards, context.group)
+            return ::Sidebars::NilMenuItem.new(item_id: :boards)
+          end
+
+          title = context.group.multiple_issue_boards_available? ? s_('IssueBoards|Boards') : s_('IssueBoards|Board')
+
+          ::Sidebars::MenuItem.new(
+            title: title,
+            link: group_boards_path(context.group),
+            active_routes: { path: %w[boards#index boards#show] },
+            item_id: :boards
+          )
+        end
+
+        def milestones_menu_item
+          unless can?(context.current_user, :read_group_milestones, context.group)
+            return ::Sidebars::NilMenuItem.new(item_id: :milestones)
+          end
+
+          ::Sidebars::MenuItem.new(
+            title: _('Milestones'),
+            link: group_milestones_path(context.group),
+            active_routes: { path: 'milestones#index' },
+            item_id: :milestones
+          )
+        end
+      end
+    end
+  end
+end
+
+Sidebars::Groups::Menus::IssuesMenu.prepend_mod_with('Sidebars::Groups::Menus::IssuesMenu')