gitlab-org--gitlab-foss/app/services/issues/resolve_discussions.rb

module Issues
  module ResolveDiscussions
    attr_reader :merge_request_for_resolving_discussions_iid, :discussion_to_resolve_id

    def filter_resolve_discussion_params
      @merge_request_for_resolving_discussions_iid ||= params.delete(:merge_request_for_resolving_discussions)
      @discussion_to_resolve_id ||= params.delete(:discussion_to_resolve)
    end

    def merge_request_for_resolving_discussions
      return @merge_request_for_resolving_discussions if defined?(@merge_request_for_resolving_discussions)

      @merge_request_for_resolving_discussions = MergeRequestsFinder.new(current_user, project_id: project.id).
                                                     execute.
                                                     find_by(iid: merge_request_for_resolving_discussions_iid)
    end

    def discussions_to_resolve
      return [] unless merge_request_for_resolving_discussions

      @discussions_to_resolve ||=
        if discussion_to_resolve_id
          discussion_or_nil = merge_request_for_resolving_discussions
                                .find_diff_discussion(discussion_to_resolve_id)
          Array(discussion_or_nil)
        else
          merge_request_for_resolving_discussions
            .resolvable_discussions
        end
    end
  end
end