1 files changed, 90 insertions, 0 deletions

diff --git a/app/services/issues/clone_service.rb b/app/services/issues/clone_service.rb
new file mode 100644
index 00000000000..789da312958
--- /dev/null
+++ b/app/services/issues/clone_service.rb
@@ -0,0 +1,90 @@
+# frozen_string_literal: true
+
+module Issues
+  class CloneService < Issuable::Clone::BaseService
+    CloneError = Class.new(StandardError)
+
+    def execute(issue, target_project, with_notes: false)
+      @target_project = target_project
+      @with_notes = with_notes
+
+      unless issue.can_clone?(current_user, target_project)
+        raise CloneError, s_('CloneIssue|Cannot clone issue due to insufficient permissions!')
+      end
+
+      if target_project.pending_delete?
+        raise CloneError, s_('CloneIssue|Cannot clone issue to target project as it is pending deletion.')
+      end
+
+      super(issue, target_project)
+
+      notify_participants
+
+      queue_copy_designs
+
+      new_entity
+    end
+
+    private
+
+    attr_reader :target_project
+    attr_reader :with_notes
+
+    def update_new_entity
+      # we don't call `super` because we want to be able to decide whether or not to copy all comments over.
+      update_new_entity_description
+      update_new_entity_attributes
+      copy_award_emoji
+      copy_notes if with_notes
+    end
+
+    def update_old_entity
+      # no-op
+      # The base_service closes the old issue, we don't want that, so we override here so nothing happens.
+    end
+
+    def create_new_entity
+      new_params = {
+        id: nil,
+        iid: nil,
+        project: target_project,
+        author: current_user,
+        assignee_ids: original_entity.assignee_ids
+      }
+
+      new_params = original_entity.serializable_hash.symbolize_keys.merge(new_params)
+
+      # Skip creation of system notes for existing attributes of the issue. The system notes of the old
+      # issue are copied over so we don't want to end up with duplicate notes.
+      CreateService.new(target_project, current_user, new_params).execute(skip_system_notes: true)
+    end
+
+    def queue_copy_designs
+      return unless original_entity.designs.present?
+
+      response = DesignManagement::CopyDesignCollection::QueueService.new(
+        current_user,
+        original_entity,
+        new_entity
+      ).execute
+
+      log_error(response.message) if response.error?
+    end
+
+    def notify_participants
+      notification_service.async.issue_cloned(original_entity, new_entity, current_user)
+    end
+
+    def add_note_from
+      SystemNoteService.noteable_cloned(new_entity, target_project,
+        original_entity, current_user,
+        direction: :from)
+    end
+
+    def add_note_to
+      SystemNoteService.noteable_cloned(original_entity, old_project,
+        new_entity, current_user,
+        direction: :to)
+    end
+  end
+end