EE_Checkout

Complexity

Total Complexity

167

Size/Duplication

Total Lines	1280
Duplicated Lines	6.02 %

Coupling/Cohesion

Components	1
Dependencies	20

Importance

Changes

0

44 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	2
A	reg_status_updated()	0	3	2
A	set_reg_status_updated()	0	3	1
A	exit_spco()	0	3	1
A	set_exit_spco()	0	5	2
A	reset_for_current_request()	0	14	3
A	add_reg_step()	0	3	1
A	any_reg_status_updated()	0	8	3
A	skip_reg_step()	0	18	4
A	remove_reg_step()	0	13	3
A	set_reg_step_order()	0	5	2
C	set_current_step()	0	23	7
B	set_next_step()	0	17	5
A	get_next_reg_step()	0	5	2
A	get_prev_reg_step()	0	5	2
A	sort_reg_steps()	0	4	1
B	find_reg_step()	0	17	5
B	reg_step_sorting_callback()	0	12	5
B	set_reg_step_initiated()	9	28	6
A	set_reg_step_JSON_info()	0	9	2
A	reset_reg_steps()	0	8	1
A	get_registration_time_limit()	0	10	2
B	payment_required()	0	9	5
A	get_cart_for_transaction()	0	10	3
A	initialize_txn_reg_steps_array()	0	7	2
B	update_txn_reg_steps_array()	0	16	5
A	stash_transaction_and_checkout()	0	10	2
B	track_transaction_and_registration_status_updates()	0	21	6
B	visit_allows_processing_of_this_registration()	0	9	5
A	transaction_has_primary_registrant()	0	3	2
A	save_all_data()	0	17	4
C	_save_registration()	5	31	7
B	_save_registration_attendee()	20	25	5
B	_save_registration_answers()	0	25	6
A	refresh_all_entities()	0	10	4
B	refresh_from_db()	0	21	6
B	_refresh_primary_attendee_obj_from_db()	0	21	5
C	refresh_entity_map()	6	46	9
A	_refresh_registration()	13	17	2
A	_refresh_registration_attendee()	0	13	4
A	_refresh_registration_answers()	11	18	4
A	__wakeup()	0	5	2
D	log()	0	39	10
B	_strip_objects()	13	18	7

<?php if ( ! defined('EVENT_ESPRESSO_VERSION')) { exit('No direct script access allowed'); }
 /**
 *
 * Class EE_Checkout
 *
 * Description
 *
 * @package 			Event Espresso
 * @subpackage    core
 * @author				Brent Christensen
 * @since 				4.5.0
 *
 */
class EE_Checkout {

	/**
	 * 	whether current request originated from the EE admin
	 * @type bool
	 */
	public $admin_request = FALSE;

	/**
	 * whether returning to edit attendee information or to retry a payment
	 * @type bool
	 */
	public $revisit = FALSE;

	/**
	 * whether the primary registrant is returning to edit attendee information or to retry a payment
	 * @type bool
	 */
	public $primary_revisit = FALSE;

	/**
	 * is registration allowed to progress or halted for some reason such as failing to pass recaptcha?
	 * @type bool
	 */
	public $continue_reg = TRUE;

	/**
	 * redirect to thank you page ?
	 * @type bool
	 */
	public $redirect = FALSE;

	/**
	 * generate the reg form or not ?
	 * @type bool
	 */
	public $generate_reg_form = TRUE;

	/**
	 * process a reg form submission or not ?
	 * @type bool
	 */
	public $process_form_submission = FALSE;

	/**
	 * tracks whether the TXN status modified during this checkout
	 *
	 * @type bool
	 */
	public $txn_status_updated = FALSE;

	/**
	 * only triggered to true after absolutely everything has finished.
	 *
	 * @type bool
	 */
	protected $exit_spco = FALSE;

	/**
	 * tracks whether any of the TXN's Registrations statuses modified during this checkout
	 * indexed by registration ID
	 *
	 * @type array
	 */
	protected $reg_status_updated = array();

	/**
	 * total number of tickets that were in the cart
	 * @type int
	 */
	public $total_ticket_count = 0;

	/**
	 * corresponds loosely to EE_Transaction::remaining()
	 * but can be modified by SPCO
	 *
	 * @type float
	 */
	public $amount_owing = 0;

	/**
	 * the reg step slug from the incoming request
	 * @type string
	 */
	public $step = '';

	/**
	 * the reg step slug for a step being edited
	 * @type string
	 */
	public $edit_step = '';

	/**
	 * the action being performed on the current step
	 * @type string
	 */
	public $action = '';

	/**
	 * reg_url_link for a previously saved registration
	 * @type string
	 */
	public $reg_url_link = '';

	/**
	 * string slug for the payment method that was selected during the payment options step
	 * @type string
	 */
	public $selected_method_of_payment = '';

	/**
	 * base url for the site's registration checkout page - additional url params will be added to this
	 * @type string
	 */
	public $reg_page_base_url = '';

	/**
	 * base url for the site's registration cancelled page - additional url params will be added to this
	 * @type string
	 */
	public $cancel_page_url = '';

	/**
	 * base url for the site's thank you page - additional url params will be added to this
	 * @type string
	 */
	public $thank_you_page_url = '';

	/**
	 * base url for any redirects - additional url params will be added to this
	 * @type string
	 */
	public $redirect_url = '';

	/**
	 * form of POST data for use with off-site gateways
	 * @type string
	 */
	public $redirect_form = '';

	/**
	 * array of query where params to use when retrieving cached registrations from $this->checkout->transaction
	 * @type array
	 */
	public $reg_cache_where_params = array();

	/**
	 * a class for managing and creating the JSON encoded array of data that gets passed back to the client during AJAX requests
	 * @type EE_SPCO_JSON_Response
	 */
	public $json_response;

	/**
	 * where we are going next in the reg process
	 * @type EE_SPCO_Reg_Step
	 */
	public $next_step;

	/**
	 * where we are in the reg process
	 * @type EE_SPCO_Reg_Step
	 */
	public $current_step;

	/**
	 * 	$_cart - the current cart object
	 *	@var EE_CART
	 */
	public $cart;

	/**
	 * 	$_transaction - the current transaction object
	 *	@var EE_Transaction
	 */
	public $transaction;

	/**
	 * 	the related attendee object for the primary registrant
	 * @type EE_Attendee
	 */
	public $primary_attendee_obj;

	/**
	 *	$payment_method - the payment method object for the selected method of payment
	 *	@type EE_Payment_Method
	 */
	public $payment_method;

	/**
	 * 	$payment - if a payment was successfully made during the reg process,
	 * 	then here it is !!!
	 *	@type EE_Payment
	 */
	public $payment;

	/**
	 * 	if a payment method was selected that uses an on-site gateway, then this is the billing form
	 * @type EE_Billing_Info_Form | EE_Billing_Attendee_Info_Form
	 */
	public $billing_form;

	/**
	 * 	the entire registration form composed of ALL of the subsections generated by the various reg steps
	 * @type EE_Form_Section_Proper
	 */
	public $registration_form;

	/**
	 * array of EE_SPCO_Reg_Step objects
	 * @type EE_SPCO_Reg_Step[]
	 */
	public $reg_steps = array();

	/**
	 * array of EE_Payment_Method objects
	 * @type EE_Payment_Method[]
	 */
	public $available_payment_methods = array();



	/**
	 *    class constructor
	 *
	 * @access    public
	 * @return    \EE_Checkout

Adding a @return annotation to constructors is generally not recommended as a constructor does not have a meaningful return value.

	 */
	public function __construct(  ) {
		$this->reg_page_base_url = EE_Registry::instance()->CFG->core->reg_page_url();

It seems like \EE_Registry::instance()->CFG->core->reg_page_url() can also be of type integer. However, the property $reg_page_base_url is declared as type string. Maybe add an additional type check?

		$this->thank_you_page_url = EE_Registry::instance()->CFG->core->thank_you_page_url();
		$this->cancel_page_url = EE_Registry::instance()->CFG->core->cancel_page_url();
		$this->continue_reg = apply_filters( 'FHEE__EE_Checkout___construct___continue_reg', TRUE );
		$this->admin_request = is_admin() && ! EE_Registry::instance()->REQ->ajax;
		$this->reg_cache_where_params = array( 'order_by' => array( 'REG_count' => 'ASC' ));
	}



	/**
	 * returns true if ANY reg status was updated during checkout
	 * @return array
	 */
	public function any_reg_status_updated() {
		foreach ( $this->reg_status_updated as $reg_status ) {
			if ( $reg_status ) {
				return true;
			}
		}
		return false;
	}



	/**
	 * @param $REG_ID
	 * @return array
	 */
	public function reg_status_updated( $REG_ID ) {
		return isset( $this->reg_status_updated[ $REG_ID ] ) ? $this->reg_status_updated[ $REG_ID ] : false;
	}



	/**
	 * @param $REG_ID
	 * @param $reg_status
	 */
	public function set_reg_status_updated( $REG_ID, $reg_status ) {
		$this->reg_status_updated[ $REG_ID ] = filter_var( $reg_status, FILTER_VALIDATE_BOOLEAN );
	}



	/**
	 * exit_spco
	 *
	 * @return bool
	 */
	public function exit_spco() {
		return $this->exit_spco;
	}



	/**
	 * set_exit_spco
	 * can ONLY be set by the  Finalize_Registration reg step
	 */
	public function set_exit_spco() {
		if ( $this->current_step instanceof EE_SPCO_Reg_Step_Finalize_Registration ) {
			$this->exit_spco = true;
		}
	}





	/**
	 *    reset_for_current_request
	 *
	 * @access    public
	 * @return    void
	 */
	public function reset_for_current_request() {
		$this->process_form_submission = FALSE;
		$this->continue_reg = apply_filters( 'FHEE__EE_Checkout___construct___continue_reg', true );
		$this->admin_request = is_admin() && ! EE_Registry::instance()->REQ->front_ajax;
		$this->continue_reg = true;
		$this->redirect = false;
		// don't reset the cached redirect form if we're about to be asked to display it !!!
		if ( EE_Registry::instance()->REQ->get( 'action', 'display_spco_reg_step' ) !== 'redirect_form' ) {
			$this->redirect_form = '';
		}
		$this->redirect_url = '';
		$this->json_response = new EE_SPCO_JSON_Response();
		EE_Form_Section_Proper::reset_js_localization();
	}



	/**
	 *    add_reg_step
	 *
	 * @access    public
	 * @param EE_SPCO_Reg_Step $reg_step_obj
	 * @return    void
	 */
	public function add_reg_step( EE_SPCO_Reg_Step $reg_step_obj ) {
		$this->reg_steps[ $reg_step_obj->slug()  ] = $reg_step_obj;
	}



	/**
	 * skip_reg_step
	 * if the current reg step does not need to run for some reason,
	 * then this will advance SPCO to the next reg step,
	 * and mark the skipped step as completed
	 *
	 * @access    public
	 * @param string $reg_step_slug
	 * @return    void
	 * @throws \EE_Error
	 */
	public function skip_reg_step( $reg_step_slug = '' ) {
		$step_to_skip = $this->find_reg_step( $reg_step_slug );
		if ( $step_to_skip instanceof EE_SPCO_Reg_Step && $step_to_skip->is_current_step() ) {
			$step_to_skip->set_is_current_step( false );
			$step_to_skip->set_completed();
			// advance to the next step
			$this->set_current_step( $this->next_step->slug() );
			// also reset the step param in the request in case any other code references that directly
			EE_Registry::instance()->REQ->set( 'step', $this->current_step->slug() );
			// since we are skipping a step and setting the current step to be what was previously the next step,
			// we need to check that the next step is now correct, and not still set to the current step.
			if ( $this->current_step->slug() === $this->next_step->slug() ) {
				// correctly setup the next step
				$this->set_next_step();
			}
			$this->set_reg_step_initiated( $this->current_step );
		}
	}



	/**
	 *    remove_reg_step
	 *
	 * @access    public
	 * @param string $reg_step_slug
	 * @param bool   $reset whether to reset reg steps after removal
	 * @throws EE_Error
	 */
	public function remove_reg_step( $reg_step_slug = '', $reset = true ) {
		unset( $this->reg_steps[ $reg_step_slug  ] );
		if ( $this->transaction instanceof EE_Transaction ) {
			/** @type EE_Transaction_Processor $transaction_processor */
			$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
			// now remove reg step from TXN and save
			$transaction_processor->remove_reg_step( $this->transaction, $reg_step_slug );
			$this->transaction->save();
		}
		if ( $reset ) {
			$this->reset_reg_steps();
		}
	}



	/**
	 *    set_reg_step_order
	 *
	 * @access    public
	 * @param string $reg_step_slug
	 * @param int    $order
	 * @return    void
	 */
	public function set_reg_step_order( $reg_step_slug = '', $order = 100 ) {
		if ( isset( $this->reg_steps[ $reg_step_slug  ] )) {
			$this->reg_steps[ $reg_step_slug ]->set_order( $order );
		}
	}



	/**
	 *    set_current_step
	 *
	 * @access    public
	 * @param string $current_step
	 * @return    void
	 */
	public function set_current_step( $current_step ) {
		// grab what step we're on
		$this->current_step = isset( $this->reg_steps[ $current_step ] ) ? $this->reg_steps[ $current_step ] : reset( $this->reg_steps );

It seems like isset($this->reg_steps[$current_step]) ? $this->reg_steps[$current_step] : reset($this->reg_steps) can also be of type false. However, the property $current_step is declared as type object<EE_SPCO_Reg_Step>. Maybe add an additional type check?

		// verify instance
		if ( $this->current_step instanceof EE_SPCO_Reg_Step ) {
			// we don't want to repeat completed steps if this is the first time through SPCO
			if ( $this->continue_reg && ! $this->revisit && $this->current_step->completed() ) {
				// so advance to the next step
				$this->set_next_step();
				if ( $this->next_step instanceof EE_SPCO_Reg_Step ) {
					// and attempt to set it as the current step
					$this->set_current_step( $this->next_step->slug() );
				}
				return;
			}
			$this->current_step->set_is_current_step( TRUE );
		} else {
			EE_Error::add_error(
				__( 'The current step could not be set.', 'event_espresso' ),
				__FILE__, __FUNCTION__, __LINE__
			);
		}
	}



	/**
	 * 	set_next_step
	 * advances the reg_steps array pointer and sets the next step, then reverses pointer back to the current step
	 *
	 *  @access 	public
	 *  @return 	void
	 */
	public function set_next_step() {
		// set pointer to start of array
		reset( $this->reg_steps );
		// if there is more than one step
		if ( count( $this->reg_steps ) > 1 ) {
			// advance to the current step and set pointer
			while ( key( $this->reg_steps ) !== $this->current_step->slug() && key( $this->reg_steps ) !== '' ) {
				next( $this->reg_steps );
			}
		}
		// advance one more spot ( if it exists )
		$this->next_step = next( $this->reg_steps );
		// verify instance
		$this->next_step = $this->next_step instanceof EE_SPCO_Reg_Step ? $this->next_step  : NULL;
		// then back to current step to reset
		prev( $this->reg_steps );
	}




	/**
	 * 	get_next_reg_step
	 * 	this simply returns the next step from reg_steps array
	 *
	 *  @access 	public
	 *  @return 	EE_SPCO_Reg_Step | null
	 */
	public function get_next_reg_step() {
		$next = next( $this->reg_steps );
		prev( $this->reg_steps );
		return $next instanceof EE_SPCO_Reg_Step ? $next : null;
	}




	/**
	 * get_prev_reg_step
	 * 	this simply returns the previous step from reg_steps array
	 *
	 *  @access 	public
	 *  @return 	EE_SPCO_Reg_Step | null
	 */
	public function get_prev_reg_step() {
		$prev = prev( $this->reg_steps );
		next( $this->reg_steps );
		return $prev instanceof EE_SPCO_Reg_Step ? $prev : null;
	}



	/**
	 * sort_reg_steps
	 *
	 * @access public
	 * @return void
	 */
	public function sort_reg_steps() {
		$reg_step_sorting_callback = apply_filters( 'FHEE__EE_Checkout__sort_reg_steps__reg_step_sorting_callback', 'reg_step_sorting_callback' );
		uasort( $this->reg_steps, array( $this, $reg_step_sorting_callback ));
	}



	/**
	 * find_reg_step
	 * finds a reg step by the given slug
	 *
	 * @access    public
	 * @param string $reg_step_slug
	 * @return EE_SPCO_Reg_Step|null
	 */
	public function find_reg_step( $reg_step_slug = '' ) {
		if ( ! empty( $reg_step_slug ) ) {
			// copy reg step array
			$reg_steps = $this->reg_steps;
			// set pointer to start of array
			reset( $reg_steps );
			// if there is more than one step
			if ( count( $reg_steps ) > 1 ) {
				// advance to the current step and set pointer
				while ( key( $reg_steps ) !== $reg_step_slug && key( $reg_steps ) !== '' ) {
					next( $reg_steps );
				}
				return current( $reg_steps );
			}
		}
		return null;
	}



	/**
	 * reg_step_sorting_callback
	 *
	 * @access public
	 * @param EE_SPCO_Reg_Step $reg_step_A
	 * @param EE_SPCO_Reg_Step $reg_step_B
	 * @return array()

The doc-type array() could not be parsed: Expected "|" or "end of type", but got "(" at position 5. (view supported doc-types)

	 */
	public function reg_step_sorting_callback( EE_SPCO_Reg_Step $reg_step_A, EE_SPCO_Reg_Step $reg_step_B ) {
		// send finalize_registration step to the end of the array
		if ( $reg_step_A->slug() === 'finalize_registration' ) {
			return 1;
		} else if ( $reg_step_B->slug() === 'finalize_registration' ) {
			return -1;
		}
		if ( $reg_step_A->order() === $reg_step_B->order() ) {
			return 0;
		}
		return ( $reg_step_A->order() > $reg_step_B->order() ) ? 1 : -1;
	}



	/**
	 * set_reg_step_initiated
	 *
	 * @access    public
	 * @param    EE_SPCO_Reg_Step $reg_step
	 * @throws \EE_Error
	 */
	public function set_reg_step_initiated( EE_SPCO_Reg_Step $reg_step ) {
		// call set_reg_step_initiated ???
		if (
			// first time visiting SPCO ?
			! $this->revisit
			&& (
				// and displaying the reg step form for the first time ?
				$this->action === 'display_spco_reg_step'
				// or initializing the final step
				|| $reg_step instanceof EE_SPCO_Reg_Step_Finalize_Registration
			)
		) {
			/** @type EE_Transaction_Processor $transaction_processor */
			$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
			// set the start time for this reg step
			if ( ! $transaction_processor->set_reg_step_initiated( $this->transaction, $reg_step->slug() ) ) {
				if ( WP_DEBUG ) {
					EE_Error::add_error(
						sprintf(
							__( 'The "%1$s" registration step was not initialized properly.', 'event_espresso' ),
							$reg_step->name()
						),
						__FILE__, __FUNCTION__, __LINE__
					);
				}
			}
		}
	}



	/**
	 * 	set_reg_step_JSON_info
	 *
	 * 	@access public
	 * 	@return 	void
	 */
	public function set_reg_step_JSON_info() {
		EE_Registry::$i18n_js_strings[ 'reg_steps' ] = array();
		// pass basic reg step data to JS
		foreach ( $this->reg_steps as $reg_step ) {
			EE_Registry::$i18n_js_strings[ 'reg_steps' ][] = $reg_step->slug();
		}
		// reset reg step html
//		$this->json_response->set_reg_step_html( '' );
	}



	/**
	 * 	reset_reg_steps
	 *
	 * 	@access public
	 * 	@return 	bool
	 */
	public function reset_reg_steps() {
		$this->sort_reg_steps();
		$this->set_current_step( EE_Registry::instance()->REQ->get( 'step' ));
		$this->set_next_step();
		// the text that appears on the reg step form submit button
		$this->current_step->set_submit_button_text();
		$this->set_reg_step_JSON_info();
	}



	/**
	 *    get_registration_time_limit
	 *
	 * @access    public
	 * @return        string
	 */
	public function get_registration_time_limit() {

		$registration_time_limit = (float)( EE_Registry::instance()	->SSN->expiration() - time() );
		$time_limit_format = $registration_time_limit > 60 * MINUTE_IN_SECONDS ? 'H:i:s' : 'i:s';
		$registration_time_limit = gmdate( $time_limit_format, $registration_time_limit );
		return apply_filters(
			'FHEE__EE_Checkout__get_registration_time_limit__registration_time_limit',
			$registration_time_limit
		);
	}



	/**
	 * payment_required
	 * @return boolean
	 */
	public function payment_required() {
		// if NOT:
		//		registration via admin
		//		completed TXN
		//		overpaid TXN
		//		free TXN ( total = 0.00 )
		// then payment required is TRUE
		return ! ( $this->admin_request || $this->transaction->is_completed() || $this->transaction->is_overpaid() || $this->transaction->is_free() ) ? TRUE : FALSE;
	}



	/**
	 * get_cart_for_transaction
	 *
	 * @access public
	 * @param EE_Transaction $transaction
	 * @return EE_Cart
	 */
	public function get_cart_for_transaction( $transaction ) {
		$session = EE_Registry::instance()->load_core( 'Session' );
		$cart = $transaction instanceof EE_Transaction ? EE_Cart::get_cart_from_txn( $transaction, $session ) : null;

It seems like $session defined by \EE_Registry::instance()->load_core('Session') on line 692 can also be of type boolean or object; however, EE_Cart::get_cart_from_txn() does only seem to accept null|object<EE_Session>, maybe add an additional type check?

		// verify cart
		if ( ! $cart instanceof EE_Cart ) {
			$cart = EE_Registry::instance()->load_core( 'Cart' );

The expression \EE_Registry::instance()->load_core('Cart'); of type null|object|boolean adds the type boolean to the return on line 699 which is incompatible with the return type documented by EE_Checkout::get_cart_for_transaction of type EE_Cart|null.

		}

		return $cart;
	}



	/**
	 * 	initialize_txn_reg_steps_array
	 *
	 * 	@access public
	 * 	@return 	array
	 */
	public function initialize_txn_reg_steps_array() {
		$txn_reg_steps_array = array();
		foreach ( $this->reg_steps as $reg_step ) {
			$txn_reg_steps_array[ $reg_step->slug() ] = FALSE;
		}
		return $txn_reg_steps_array;
	}



	/**
	 *    update_txn_reg_steps_array
	 *
	 * @access public
	 * @return    bool
	 * @throws \EE_Error
	 */
	public function update_txn_reg_steps_array() {
		$updated = false;
		/** @type EE_Transaction_Processor $transaction_processor */
		$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
		foreach ( $this->reg_steps as $reg_step ) {
			if ( $reg_step->completed() ) {
				$updated = $transaction_processor->set_reg_step_completed( $this->transaction, $reg_step->slug() )
					? true
					: $updated;
			}
		}
		if ( $updated ) {
			$this->transaction->save();
		}
		return $updated;
	}



	/**
	 *    stash_transaction_and_checkout
	 *
	 * @access public
	 * @return    void
	 * @throws \EE_Error
	 */
	public function stash_transaction_and_checkout() {
		if ( ! $this->revisit ) {
			$this->update_txn_reg_steps_array();
		}
		$this->track_transaction_and_registration_status_updates();
		// save all data to the db, but suppress errors
		//$this->save_all_data( FALSE );
		// cache the checkout in the session
		EE_Registry::instance()->SSN->set_checkout( $this );
	}



	/**
	 *    track_transaction_and_registration_status_updates
	 *    stores whether any updates were made to the TXN or it's related registrations
	 *
	 * @access public
	 * @return    bool
	 * @throws \EE_Error
	 */
	public function track_transaction_and_registration_status_updates() {
		// verify the transaction
		if ( $this->transaction instanceof EE_Transaction ) {
			/** @type EE_Transaction_Payments $transaction_payments */
			$transaction_payments = EE_Registry::instance()->load_class( 'Transaction_Payments' );
			/** @type EE_Transaction_Processor $transaction_processor */
			$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
			// has there been a TXN status change during this checkout?
			if ( $transaction_payments->txn_status_updated() || $transaction_processor->txn_status_updated() ) {
				$this->txn_status_updated = true;
			}
			/** @type EE_Registration_Processor $registration_processor */
			$registration_processor = EE_Registry::instance()->load_class( 'Registration_Processor' );
			// grab the saved registrations from the transaction
			foreach ( $this->transaction->registrations( $this->reg_cache_where_params ) as $registration ) {
				if ( $registration_processor->reg_status_updated( $registration->ID() ) ) {
					$this->set_reg_status_updated( $registration->ID(), true );
				}
			}
		}
	}



	/**
	 *    visit_allows_processing_of_this_registration
	 *    determines if the current SPCO visit should allow the passed EE_Registration to be used in processing.
	 *    one of the following conditions must be met:
	 *        EITHER:    A) first time thru SPCO -> process ALL registrations ( NOT a revisit )
	 *        OR :        B) primary registrant is editing info -> process ALL registrations ( primary_revisit )
	 *        OR :        C) another registrant is editing info -> ONLY process their registration ( revisit AND their reg_url_link matches )
	 *
	 * @access public
	 * @param    EE_Registration $registration
	 * @return    bool
	 * @throws \EE_Error
	 */
	public function visit_allows_processing_of_this_registration( EE_Registration $registration ) {
		return ! $this->revisit
		       || $this->primary_revisit
		       || (
			       $this->revisit && $this->reg_url_link === $registration->reg_url_link()
		       )
			? true
			: false;
	}



	/**
	 * 	_transaction_has_primary_registration
	 *
	 * 	@access 		private
	 * 	@return 		bool
	 */
	public function transaction_has_primary_registrant() {
		return $this->primary_attendee_obj instanceof EE_Attendee ? TRUE : FALSE;
	}



	/**
	 *    save_all_data
	 *    simply loops through the current transaction and saves all data for each registration
	 *
	 * @access public
	 * @param bool $show_errors
	 * @return bool
	 * @throws \EE_Error
	 */
	public function save_all_data( $show_errors = TRUE ) {
		// verify the transaction
		if ( $this->transaction instanceof EE_Transaction ) {
			// save to ensure that TXN has ID
			$this->transaction->save();
			// grab the saved registrations from the transaction
			foreach ( $this->transaction->registrations( $this->reg_cache_where_params ) as  $registration ) {
				$this->_save_registration( $registration, $show_errors );

$registration of type object<EE_Base_Class> is not a sub-type of object<EE_Registration>. It seems like you assume a child class of the class EE_Base_Class to be always present.

			}
		} else {
			if ( $show_errors ) {
				EE_Error::add_error( __( 'A valid Transaction was not found when attempting to save your registration information.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__);
			}
			return FALSE;
		}
		return TRUE;
	}



	/**
	 * _save_registration_attendee
	 *
	 * @param    EE_Registration $registration
	 * @param bool               $show_errors
	 * @return void
	 * @throws \EE_Error
	 */
	private function _save_registration( $registration, $show_errors = TRUE  ) {
		// verify object
		if ( $registration instanceof EE_Registration ) {
			// should this registration be processed during this visit ?
			if ( $this->visit_allows_processing_of_this_registration( $registration ) ) {
				//set TXN ID
				if ( ! $registration->transaction_ID() ) {
					$registration->set_transaction_id( $this->transaction->ID() );
				}
				// verify and save the attendee
				$this->_save_registration_attendee( $registration, $show_errors );
				// save answers to reg form questions
				$this->_save_registration_answers( $registration, $show_errors );
				// save changes
				$registration->save();
				// update txn cache
				if ( ! $this->transaction->update_cache_after_object_save( 'Registration', $registration )) {
					if ( $show_errors ) {
						EE_Error::add_error( __( 'The newly saved Registration object could not be cached on the Transaction.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__);
					}
				}
			}
		} else {
			if ( $show_errors ) {
				EE_Error::add_error(
					__( 'An invalid Registration object was discovered when attempting to save your registration information.', 'event_espresso' ),
					__FILE__, __FUNCTION__, __LINE__
				);
			}
		}
	}



	/**
	 * _save_registration_attendee
	 *
	 * @param    EE_Registration $registration
	 * @param bool               $show_errors
	 * @return void
	 * @throws \EE_Error
	 */
	private function _save_registration_attendee( $registration, $show_errors = TRUE ) {
		if ( $registration->attendee() instanceof EE_Attendee ) {
			// save so that ATT has ID
			$registration->attendee()->save();
			if ( ! $registration->update_cache_after_object_save( 'Attendee', $registration->attendee() ) ) {
				if ( $show_errors ) {
					EE_Error::add_error(
						__( 'The newly saved Attendee object could not be cached on the registration.', 'event_espresso' ),
						__FILE__, __FUNCTION__, __LINE__
					);
				}
			}
		} else {
			if ( $show_errors ) {
				EE_Error::add_error(
					sprintf(
						'%1$s||%1$s $attendee = %2$s',
						__( 'Either no Attendee information was found, or an invalid Attendee object was discovered when attempting to save your registration information.', 'event_espresso' ),
						var_export( $registration->attendee(), true )
					),
					__FILE__, __FUNCTION__, __LINE__
				);
			}
		}
	}



	/**
	 * _save_question_answers
	 *
	 * @param    EE_Registration $registration
	 * @param bool               $show_errors
	 * @return void
	 * @throws \EE_Error
	 */
	private function _save_registration_answers( $registration, $show_errors = TRUE ) {
		// now save the answers
		foreach ( $registration->answers() as $cache_key => $answer ) {
			// verify object
			if ( $answer instanceof EE_Answer ) {
				$answer->set_registration( $registration->ID() );
				$answer->save();
				if ( ! $registration->update_cache_after_object_save( 'Answer', $answer, $cache_key )) {
					if ( $show_errors ) {
						EE_Error::add_error(
							__( 'The newly saved Answer object could not be cached on the registration.', 'event_espresso' ),
							__FILE__, __FUNCTION__, __LINE__
						);
					}
				}
			} else {
				if ( $show_errors ) {
					EE_Error::add_error(
						__( 'An invalid Answer object was discovered when attempting to save your registration information.', 'event_espresso' ),
						__FILE__, __FUNCTION__, __LINE__
					);
				}
			}
		}
	}



	/**
	 *    refresh_all_entities
	 *   will either refresh the entity map with objects form the db or from the checkout cache
	 *
	 * @access public
	 * @param bool $from_db
	 * @return bool
	 * @throws \EE_Error
	 */
	public function refresh_all_entities( $from_db = false ) {
		$from_db = $this->current_step->is_final_step() || $this->action === 'process_gateway_response'
			? true
			: $from_db;
		//$this->log(
		//	__CLASS__, __FUNCTION__, __LINE__,
		//	array( 'from_db' =>$from_db )
		//);
		return $from_db ? $this->refresh_from_db() : $this->refresh_entity_map();
	}



	/**
	 *  refresh_entity_map
	 *  simply loops through the current transaction and updates each
	 *  model's entity map using EEM_Base::refresh_entity_map_from_db()
	 *
	 * @access public
	 * @return bool
	 * @throws \EE_Error
	 */
	protected function refresh_from_db() {
		// verify the transaction
		if ( $this->transaction instanceof EE_Transaction && $this->transaction->ID() ) {
			// pull fresh TXN data from the db
			$this->transaction = $this->transaction->get_model()->refresh_entity_map_from_db( $this->transaction->ID() );
			// update EE_Checkout's cached primary_attendee object
			$this->primary_attendee_obj = $this->_refresh_primary_attendee_obj_from_db( $this->transaction );
			// update EE_Checkout's cached payment object
			$payment = $this->transaction->last_payment();
			$this->payment = $payment instanceof EE_Payment ? $payment : $this->payment;
			// update EE_Checkout's cached payment_method object
			$payment_method = $this->payment instanceof EE_Payment ? $this->payment->payment_method() : null;
			$this->payment_method = $payment_method instanceof EE_Payment_Method ? $payment_method : $this->payment_method;
			//now refresh the cart, based on the TXN
			$this->cart = $this->get_cart_for_transaction( $this->transaction );
		} else {
			EE_Error::add_error( __( 'A valid Transaction was not found when attempting to update the model entity mapper.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__);
			return FALSE;
		}
		return TRUE;
	}



	/**
	 * _refresh_primary_attendee_obj_from_db
	 *
	 * @param   EE_Transaction $transaction
	 * @return  EE_Attendee | null
	 * @throws \EE_Error
	 */
	protected function _refresh_primary_attendee_obj_from_db( EE_Transaction $transaction ) {

		$primary_attendee_obj = null;
		// grab the saved registrations from the transaction
		foreach ( $transaction->registrations( $this->reg_cache_where_params, true ) as $registration ) {
			// verify object
			if ( $registration instanceof EE_Registration ) {
				$attendee = $registration->attendee();
				// verify object && maybe cache primary_attendee_obj ?
				if ( $attendee instanceof EE_Attendee&& $registration->is_primary_registrant() ) {
					$primary_attendee_obj = $attendee;
				}
			} else {
				EE_Error::add_error(
						__( 'An invalid Registration object was discovered when attempting to update the model entity mapper.', 'event_espresso' ),
						__FILE__, __FUNCTION__, __LINE__
				);
			}
		}
		return $primary_attendee_obj;
	}



	/**
	 *  refresh_entity_map
	 *  simply loops through the current transaction and updates
	 *  each model's entity map using EEM_Base::refresh_entity_map_with()
	 *
	 * @access public
	 * @return bool
	 * @throws \EE_Error
	 */
	protected function refresh_entity_map() {
		// verify the transaction
		if ( $this->transaction instanceof EE_Transaction && $this->transaction->ID() ) {
			// never cache payment info
			$this->transaction->clear_cache( 'Payment' );
			/** @type EE_Transaction_Processor $transaction_processor */
			$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
			// is the Payment Options Reg Step completed ?
			if ( $transaction_processor->reg_step_completed( $this->transaction, 'payment_options' ) ) {
				// then check for payments and update TXN accordingly
				/** @type EE_Transaction_Payments $transaction_payments */
				$transaction_payments = EE_Registry::instance()->load_class( 'Transaction_Payments' );
				$transaction_payments->calculate_total_payments_and_update_status( $this->transaction );
			}
			// grab the saved registrations from the transaction
			foreach (
				$this->transaction->registrations( $this->reg_cache_where_params ) as $reg_cache_ID => $registration
			) {
				$this->_refresh_registration( $reg_cache_ID, $registration );

$registration of type object<EE_Base_Class> is not a sub-type of object<EE_Registration>. It seems like you assume a child class of the class EE_Base_Class to be always present.

			}
			// make sure our cached TXN is added to the model entity mapper
			$this->transaction = $this->transaction->get_model()->refresh_entity_map_with( $this->transaction->ID(), $this->transaction );

		} else {
			EE_Error::add_error( __( 'A valid Transaction was not found when attempting to update the model entity mapper.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__);
			return FALSE;
		}
		// verify and update the cart because inaccurate totals are not so much fun
		if ( $this->cart instanceof EE_Cart ) {
			$grand_total = $this->cart->get_grand_total();
			if ( $grand_total instanceof EE_Line_Item && $grand_total->ID() ) {
				$grand_total->recalculate_total_including_taxes();
				$grand_total = $grand_total->get_model()->refresh_entity_map_with(
					$this->cart->get_grand_total()->ID(),
					$this->cart->get_grand_total()
				);
			}
			if ( $grand_total instanceof EE_Line_Item ) {
				$this->cart = EE_Cart::instance( $grand_total );
			} else {
				EE_Error::add_error( __( 'A valid Cart was not found when attempting to update the model entity mapper.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__ );
				return false;
			}
		}
		return TRUE;
	}



	/**
	 * _refresh_registration
	 *
	 * @param    string | int    $reg_cache_ID
	 * @param    EE_Registration $registration
	 * @return void
	 * @throws \EE_Error
	 */
	protected function _refresh_registration( $reg_cache_ID, $registration ) {

		// verify object
		if ( $registration instanceof EE_Registration ) {
			// update the entity mapper attendee
			$this->_refresh_registration_attendee( $registration );
			// update the entity mapper answers for reg form questions
			$this->_refresh_registration_answers( $registration );
			// make sure the cached registration is added to the model entity mapper
			$registration->get_model()->refresh_entity_map_with( $reg_cache_ID, $registration );
		} else {
			EE_Error::add_error(
				__( 'An invalid Registration object was discovered when attempting to update the model entity mapper.', 'event_espresso' ),
				__FILE__, __FUNCTION__, __LINE__
			);
		}
	}



	/**
	 * _save_registration_attendee
	 *
	 * @param    EE_Registration $registration
	 * @return void
	 * @throws \EE_Error
	 */
	protected function _refresh_registration_attendee( $registration ) {

		$attendee = $registration->attendee();
		// verify object
		if ( $attendee instanceof EE_Attendee && $attendee->ID() ) {
			// make sure the cached attendee is added to the model entity mapper
			$registration->attendee()->get_model()->refresh_entity_map_with( $attendee->ID(), $attendee );
			// maybe cache primary_attendee_obj ?
			if ( $registration->is_primary_registrant() ) {
				$this->primary_attendee_obj = $attendee;
			}
		}
	}



	/**
	 * _refresh_registration_answers
	 *
	 * @param    EE_Registration $registration
	 * @return void
	 * @throws \EE_Error
	 */
	protected function _refresh_registration_answers( $registration ) {

		// now update the answers
		foreach ( $registration->answers() as $cache_key => $answer ) {
			// verify object
			if ( $answer instanceof EE_Answer ) {
				if ( $answer->ID() ) {
					// make sure the cached answer is added to the model entity mapper
					$answer->get_model()->refresh_entity_map_with( $answer->ID(), $answer );
				}
			} else {
				EE_Error::add_error(
					__( 'An invalid Answer object was discovered when attempting to update the model entity mapper.', 'event_espresso' ),
					__FILE__, __FUNCTION__, __LINE__
				);
			}
		}
	}



	/**
	 * 	__wakeup
	 * to conserve db space, we are removing the EE_Checkout object from EE_SPCO_Reg_Step objects upon serialization
	 * this will reinstate the EE_Checkout object on each EE_SPCO_Reg_Step object
	 */
	public function __wakeup() {
		foreach ( $this->reg_steps as $reg_step ) {
			$reg_step->checkout = $this;
		}
	}



	/**
	 * debug
	 *
	 * @param string $class
	 * @param string $func
	 * @param string $line
	 * @param array  $info
	 * @param bool   $display_request
	 * @throws \EE_Error
	 */
	public function log( $class = '', $func = '', $line = '', $info = array(), $display_request = false ) {
		$disabled = true;
		if ( WP_DEBUG && ! $disabled ) {
			$debug_data = get_option( 'EE_DEBUG_SPCO_' . EE_Session::instance()->id(), array() );
			$default_data = array(
				$class 		=> $func . '() : ' . $line,
				'request->step' 		=> $this->step,
				'request->action' 	=> $this->action,
				'current_step->slug' => $this->current_step instanceof EE_SPCO_Reg_Step ?
					$this->current_step->slug() : '',
				'current_step->completed' => $this->current_step instanceof EE_SPCO_Reg_Step ?
					$this->current_step->completed() : '',
				'txn_status_updated' => $this->txn_status_updated,
				'reg_status_updated' => $this->reg_status_updated,
				'reg_url_link' => $this->reg_url_link,
				'REQ' => $display_request ? $_REQUEST : '',
			);
			if ( $this->transaction instanceof EE_Transaction ) {
				$default_data[ 'TXN_status' ] 		= $this->transaction->status_ID();
				$default_data[ 'TXN_reg_steps' ] 	= $this->transaction->reg_steps();
				foreach ( $this->transaction->registrations( $this->reg_cache_where_params ) as $REG_ID => $registration ) {
					$default_data[ 'registrations' ][ $REG_ID ] = $registration->status_ID();

The method status_ID does not exist on object<EE_Base_Class>? Since you implemented __call, maybe consider adding a @method annotation.

				}
				if ( $this->transaction->ID() ) {
					$TXN_ID = 'EE_Transaction: ' . $this->transaction->ID();
					// don't serialize objects
					$info = $this->_strip_objects( $info );
					if ( ! isset( $debug_data[ $TXN_ID ] ) ) {
						$debug_data[ $TXN_ID ] = array();
					}
					$debug_data[ $TXN_ID ][ microtime() ] = array_merge(
						$default_data,
						$info
					);
					update_option( 'EE_DEBUG_SPCO_' . EE_Session::instance()->id(), $debug_data );
				}
			}
		}
	}


	/**
	 * _strip_objects
	 *
	 * @param array $info
	 * @return array
	 */
	public function _strip_objects( $info = array() ) {
		foreach ( (array)$info as $key => $value ) {
			if ( is_array( $value )) {
				$info[ $key ] = $this->_strip_objects( $value );
			} else if ( is_object( $value ) ) {
				$object_class = get_class( $value );
				$info[ $object_class ] = array();
				$info[ $object_class ][ 'ID' ] = method_exists( $value, 'ID' ) ? $value->ID() : 0;
				if ( method_exists( $value, 'status' ) ) {
					$info[ $object_class ][ 'status' ] = $value->status();
				} else if ( method_exists( $value, 'status_ID' ) ) {
					$info[ $object_class ][ 'status' ] = $value->status_ID();
				}
				unset( $info[ $key ] );
			}
		}
		return (array)$info;
	}




}
// End of file EE_Checkout.class.php
// Location: /EE_Checkout.class.php