eventespresso / event-espresso-core

        // these reg statuses should not be considered in any calculations involving monies owing

        $closed_reg_statuses = EEM_Registration::closed_reg_statuses();

        // true if registration has been cancelled or declined

        if (

            in_array($new_STS_ID, $closed_reg_statuses, true)

            && ! in_array($old_STS_ID, $closed_reg_statuses, true)

        ) {

            /** @type EE_Registration_Processor $registration_processor */

            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');

            /** @type EE_Transaction_Processor $transaction_processor */

            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');

            // cancelled or declined registration

            $registration_processor->update_registration_after_being_canceled_or_declined(

                $this,

                $closed_reg_statuses

            );

            $transaction_processor->update_transaction_after_canceled_or_declined_registration(

                $this,

                $closed_reg_statuses,

                false

            );

            do_action('AHEE__EE_Registration__set_status__canceled_or_declined', $this, $old_STS_ID, $new_STS_ID);

            return;

        }

        // true if reinstating cancelled or declined registration

        if (

            in_array($old_STS_ID, $closed_reg_statuses, true)

            return;

        }

        // true if reinstating cancelled or declined registration

        if (

            in_array($old_STS_ID, $closed_reg_statuses, true)

            && ! in_array($new_STS_ID, $closed_reg_statuses, true)

        ) {

            /** @type EE_Registration_Processor $registration_processor */

            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');

            /** @type EE_Transaction_Processor $transaction_processor */

            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');

            // reinstating cancelled or declined registration

            $registration_processor->update_canceled_or_declined_registration_after_being_reinstated(

                $this,

                $closed_reg_statuses

            );

            $transaction_processor->update_transaction_after_reinstating_canceled_registration(

                $this,

                $closed_reg_statuses,

                false

            );

            do_action('AHEE__EE_Registration__set_status__after_reinstated', $this, $old_STS_ID, $new_STS_ID);

        }

	}