# frozen_string_literal: true

module Gitlab
  module QuickActions
    module RelateActions
      extend ActiveSupport::Concern
      include ::Gitlab::QuickActions::Dsl

      included do
        desc { _('Mark this issue as related to another issue') }
        explanation do |target_issues|
          _('Marks this issue as related to %{issue_ref}.') % { issue_ref: target_issues.to_sentence }
        end
        execution_message do |target_issues|
          _('Marked this issue as related to %{issue_ref}.') % { issue_ref: target_issues.to_sentence }
        end
        params '<#issue | group/project#issue | issue URL>'
        types Issue
        condition { can_admin_link? }
        parse_params { |issues| format_params(issues) }
        command :relate do |target_issues|
          create_links(target_issues)
        end

        desc { _("Remove link with another issue") }
        explanation do |issue|
          _('Removes link with %{issue_ref}.') % { issue_ref: issue.to_reference(quick_action_target) }
        end
        execution_message do |issue|
          _('Removed link with %{issue_ref}.') % { issue_ref: issue.to_reference(quick_action_target) }
        end
        params '<#issue | group/project#issue | issue URL>'
        types Issue
        condition { can_admin_link? }
        parse_params do |issue_param|
          extract_references(issue_param, :issue).first
        end
        command :unlink do |issue|
          link = IssueLink.for_issues(quick_action_target, issue).first

          if link
            call_link_service(IssueLinks::DestroyService.new(link, current_user))
          else
            @execution_message[:unlink] = _('No linked issue matches the provided parameter.')
          end
        end

        private

        def can_admin_link?
          current_user.can?(:admin_issue_link, quick_action_target)
        end

        def create_links(references, type: 'relates_to')
          create_service_instance = IssueLinks::CreateService.new(
            quick_action_target,
            current_user, { issuable_references: references, link_type: type }
          )

          call_link_service(create_service_instance)
        end

        def call_link_service(service_instance)
          execute_service = proc { service_instance.execute }

          if quick_action_target.persisted?
            execute_service.call
          else
            quick_action_target.run_after_commit(&execute_service)
          end
        end

        def format_params(issue_references)
          issue_references.split(' ')
        end
      end
    end
  end
end