1 files changed, 48 insertions, 0 deletions

diff --git a/app/services/issues/reorder_service.rb b/app/services/issues/reorder_service.rb
new file mode 100644
index 00000000000..02c18d31b5e
--- /dev/null
+++ b/app/services/issues/reorder_service.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+module Issues
+  class ReorderService < Issues::BaseService
+    def execute(issue)
+      return false unless can?(current_user, :update_issue, issue)
+      return false if group && !can?(current_user, :read_group, group)
+
+      attrs = issue_params(group)
+      return false if attrs.empty?
+
+      update(issue, attrs)
+    end
+
+    private
+
+    def group
+      return unless params[:group_full_path]
+
+      @group ||= Group.find_by_full_path(params[:group_full_path])
+    end
+
+    def update(issue, attrs)
+      ::Issues::UpdateService.new(project, current_user, attrs).execute(issue)
+    rescue ActiveRecord::RecordNotFound
+      false
+    end
+
+    def issue_params(group)
+      attrs = {}
+
+      if move_between_ids
+        attrs[:move_between_ids] = move_between_ids
+        attrs[:board_group_id]   = group&.id
+      end
+
+      attrs
+    end
+
+    def move_between_ids
+      ids = [params[:move_after_id], params[:move_before_id]]
+              .map(&:to_i)
+              .map { |m| m.positive? ? m : nil }
+
+      ids.any? ? ids : nil
+    end
+  end
+end