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<?php
namespace Automattic\WooCommerce\Blocks\StoreApi\Routes;
use Automattic\WooCommerce\Blocks\StoreApi\Utilities\InvalidStockLevelsInCartException;
use \Exception;
use \WP_Error;
use \WP_REST_Server;
use \WP_REST_Request;
use \WP_REST_Response;
use \WC_Order;
use Automattic\WooCommerce\Blocks\Package;
use Automattic\WooCommerce\Blocks\Domain\Services\CreateAccount;
use Automattic\WooCommerce\Blocks\StoreApi\Schemas\AbstractSchema;
use Automattic\WooCommerce\Blocks\StoreApi\Schemas\CartSchema;
use Automattic\WooCommerce\Blocks\StoreApi\Utilities\CartController;
use Automattic\WooCommerce\Blocks\StoreApi\Utilities\OrderController;
use Automattic\WooCommerce\Checkout\Helpers\ReserveStock;
use Automattic\WooCommerce\Checkout\Helpers\ReserveStockException;
use Automattic\WooCommerce\Blocks\Payments\PaymentResult;
use Automattic\WooCommerce\Blocks\Payments\PaymentContext;
/**
* Checkout class.
*
* @internal This API is used internally by Blocks--it is still in flux and may be subject to revisions.
*/
class Checkout extends AbstractCartRoute {
/**
* Holds the current order being processed.
*
* @var WC_Order
*/
private $order = null;
/**
* Order controller class instance.
*
* @var OrderController
*/
protected $order_controller;
/**
* Constructor accepts two types of schema; one for the item being returned, and one for the cart as a whole. These
* may be the same depending on the route.
*
* @param CartSchema $cart_schema Schema class for the cart.
* @param AbstractSchema $item_schema Schema class for this route's items if it differs from the cart schema.
* @param CartController $cart_controller Cart controller class.
* @param OrderController $order_controller Order controller class.
*/
public function __construct( CartSchema $cart_schema, AbstractSchema $item_schema = null, CartController $cart_controller, OrderController $order_controller ) {
$this->schema = is_null( $item_schema ) ? $cart_schema : $item_schema;
$this->cart_schema = $cart_schema;
$this->cart_controller = $cart_controller;
$this->order_controller = $order_controller;
}
/**
* Get the path of this REST route.
*
* @return string
*/
public function get_path() {
return '/checkout';
}
/**
* Checks if a nonce is required for the route.
*
* @param \WP_REST_Request $request Request.
* @return bool
*/
protected function requires_nonce( \WP_REST_Request $request ) {
return true;
}
/**
* Get method arguments for this REST route.
*
* @return array An array of endpoints.
*/
public function get_args() {
return [
[
'methods' => WP_REST_Server::READABLE,
'callback' => [ $this, 'get_response' ],
'permission_callback' => '__return_true',
'args' => [
'context' => $this->get_context_param( [ 'default' => 'view' ] ),
],
],
[
'methods' => WP_REST_Server::CREATABLE,
'callback' => [ $this, 'get_response' ],
'permission_callback' => '__return_true',
'args' => array_merge(
[
'payment_data' => [
'description' => __( 'Data to pass through to the payment method when processing payment.', 'woocommerce' ),
'type' => 'array',
'items' => [
'type' => 'object',
'properties' => [
'key' => [
'type' => 'string',
],
'value' => [
'type' => [ 'string', 'boolean' ],
],
],
],
],
],
$this->schema->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE )
),
],
[
'methods' => WP_REST_Server::EDITABLE,
'callback' => array( $this, 'get_response' ),
'permission_callback' => '__return_true',
'args' => $this->schema->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
],
'schema' => [ $this->schema, 'get_public_item_schema' ],
'allow_batch' => [ 'v1' => true ],
];
}
/**
* Prepare a single item for response. Handles setting the status based on the payment result.
*
* @param mixed $item Item to format to schema.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response $response Response data.
*/
public function prepare_item_for_response( $item, WP_REST_Request $request ) {
$response = parent::prepare_item_for_response( $item, $request );
if ( isset( $item->payment_result ) && $item->payment_result instanceof PaymentResult ) {
switch ( $item->payment_result->status ) {
case 'success':
$response->set_status( 200 );
break;
case 'pending':
$response->set_status( 202 );
break;
case 'failure':
$response->set_status( 400 );
break;
case 'error':
$response->set_status( 500 );
break;
}
}
return $response;
}
/**
* Convert the cart into a new draft order, or update an existing draft order, and return an updated cart response.
*
* @throws RouteException On error.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response
*/
protected function get_route_response( WP_REST_Request $request ) {
$this->create_or_update_draft_order();
return $this->prepare_item_for_response(
(object) [
'order' => $this->order,
'payment_result' => new PaymentResult(),
],
$request
);
}
/**
* Update the current order.
*
* @internal Customer data is updated first so OrderController::update_addresses_from_cart uses up to date data.
*
* @throws RouteException On error.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response
*/
protected function get_route_update_response( WP_REST_Request $request ) {
$this->update_customer_from_request( $request );
$this->create_or_update_draft_order();
$this->update_order_from_request( $request );
return $this->prepare_item_for_response(
(object) [
'order' => $this->order,
'payment_result' => new PaymentResult(),
],
$request
);
}
/**
* Update and process an order.
*
* 1. Obtain Draft Order
* 2. Process Request
* 3. Process Customer
* 4. Validate Order
* 5. Process Payment
*
* @throws RouteException On error.
* @throws InvalidStockLevelsInCartException On error.
*
* @param WP_REST_Request $request Request object.
*
* @return WP_REST_Response
*/
protected function get_route_post_response( WP_REST_Request $request ) {
/**
* Validate items etc are allowed in the order before the order is processed. This will fix violations and tell
* the customer.
*/
$this->cart_controller->validate_cart_items();
$this->cart_controller->validate_cart_coupons();
/**
* Obtain Draft Order and process request data.
*
* Note: Customer data is persisted from the request first so that OrderController::update_addresses_from_cart
* uses the up to date customer address.
*/
$this->update_customer_from_request( $request );
$this->create_or_update_draft_order();
$this->update_order_from_request( $request );
/**
* Process customer data.
*
* Update order with customer details, and sign up a user account as necessary.
*/
$this->process_customer( $request );
/**
* Validate order.
*
* This logic ensures the order is valid before payment is attempted.
*/
$this->order_controller->validate_order_before_payment( $this->order );
/**
* WooCommerce Blocks Checkout Order Processed (experimental).
*
* This hook informs extensions that $order has completed processing and is ready for payment.
*
* This is similar to existing core hook woocommerce_checkout_order_processed. We're using a new action:
* - To keep the interface focused (only pass $order, not passing request data).
* - This also explicitly indicates these orders are from checkout block/StoreAPI.
*
* @see https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3238
* @internal This Hook is experimental and may change or be removed.
*
* @param WC_Order $order Order object.
*/
do_action( '__experimental_woocommerce_blocks_checkout_order_processed', $this->order );
/**
* Process the payment and return the results.
*/
$payment_result = $this->order->needs_payment() ? $this->process_payment( $request ) : $this->process_without_payment( $request );
return $this->prepare_item_for_response(
(object) [
'order' => wc_get_order( $this->order ),
'payment_result' => $payment_result,
],
$request
);
}
/**
* Get route response when something went wrong.
*
* @param string $error_code String based error code.
* @param string $error_message User facing error message.
* @param int $http_status_code HTTP status. Defaults to 500.
* @param array $additional_data Extra data (key value pairs) to expose in the error response.
* @return WP_Error WP Error object.
*/
protected function get_route_error_response( $error_code, $error_message, $http_status_code = 500, $additional_data = [] ) {
$error_from_message = new WP_Error(
$error_code,
$error_message
);
switch ( $http_status_code ) {
case 409:
// 409 is when there was a conflict, so we return the cart so the client can resolve it.
return $this->add_data_to_error_object( $error_from_message, $additional_data, $http_status_code, true );
}
return $this->add_data_to_error_object( $error_from_message, $additional_data, $http_status_code );
}
/**
* Get route response when something went wrong.
*
* @param WP_Error $error_object User facing error message.
* @param int $http_status_code HTTP status. Defaults to 500.
* @param array $additional_data Extra data (key value pairs) to expose in the error response.
* @return WP_Error WP Error object.
*/
protected function get_route_error_response_from_object( $error_object, $http_status_code = 500, $additional_data = [] ) {
switch ( $http_status_code ) {
case 409:
// 409 is when there was a conflict, so we return the cart so the client can resolve it.
return $this->add_data_to_error_object( $error_object, $additional_data, $http_status_code, true );
}
return $this->add_data_to_error_object( $error_object, $additional_data, $http_status_code );
}
/**
* Adds additional data to the WP_Error object.
*
* @param WP_Error $error The error object to add the cart to.
* @param array $data The data to add to the error object.
* @param int $http_status_code The HTTP status code this error should return.
* @param bool $include_cart Whether the cart should be included in the error data.
* @returns WP_Error The WP_Error with the cart added.
*/
private function add_data_to_error_object( $error, $data, $http_status_code, bool $include_cart = false ) {
$data = array_merge( $data, [ 'status' => $http_status_code ] );
if ( $include_cart ) {
$data = array_merge( $data, [ 'cart' => wc()->api->get_endpoint_data( '/wc/store/cart' ) ] );
}
$error->add_data( $data );
return $error;
}
/**
* Gets draft order data from the customer session.
*
* @return array
*/
private function get_draft_order_id() {
return wc()->session->get( 'store_api_draft_order', 0 );
}
/**
* Updates draft order data in the customer session.
*
* @param integer $order_id Draft order ID.
*/
private function set_draft_order_id( $order_id ) {
wc()->session->set( 'store_api_draft_order', $order_id );
}
/**
* Whether the passed argument is a draft order or an order that is
* pending/failed and the cart hasn't changed.
*
* @param \WC_Order $order_object Order object to check.
* @return boolean Whether the order is valid as a draft order.
*/
private function is_valid_draft_order( $order_object ) {
if ( ! $order_object instanceof \WC_Order ) {
return false;
}
// Draft orders are okay.
if ( $order_object->has_status( 'checkout-draft' ) ) {
return true;
}
// Pending and failed orders can be retried if the cart hasn't changed.
if ( $order_object->needs_payment() && $order_object->has_cart_hash( wc()->cart->get_cart_hash() ) ) {
return true;
}
return false;
}
/**
* Create or update a draft order based on the cart.
*
* @throws RouteException On error.
*/
private function create_or_update_draft_order() {
$this->order = $this->get_draft_order_id() ? wc_get_order( $this->get_draft_order_id() ) : null;
if ( ! $this->is_valid_draft_order( $this->order ) ) {
$this->order = $this->order_controller->create_order_from_cart();
} else {
$this->order_controller->update_order_from_cart( $this->order );
}
/**
* WooCommerce Blocks Checkout Update Order Meta (experimental).
*
* This hook gives extensions the chance to add or update meta data on the $order.
*
* This is similar to existing core hook woocommerce_checkout_update_order_meta.
* We're using a new action:
* - To keep the interface focused (only pass $order, not passing request data).
* - This also explicitly indicates these orders are from checkout block/StoreAPI.
*
* @see https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3686
* @internal This Hook is experimental and may change or be removed.
*
* @param WC_Order $order Order object.
*/
do_action( '__experimental_woocommerce_blocks_checkout_update_order_meta', $this->order );
// Confirm order is valid before proceeding further.
if ( ! $this->order instanceof WC_Order ) {
throw new RouteException(
'woocommerce_rest_checkout_missing_order',
__( 'Unable to create order', 'woocommerce' ),
500
);
}
// Store order ID to session.
$this->set_draft_order_id( $this->order->get_id() );
// Try to reserve stock for 10 mins, if available.
try {
$reserve_stock = new ReserveStock();
$reserve_stock->reserve_stock_for_order( $this->order, 10 );
} catch ( ReserveStockException $e ) {
$error_data = $e->getErrorData();
throw new RouteException(
$e->getErrorCode(),
$e->getMessage(),
$e->getCode()
);
}
}
/**
* Updates the current customer session using data from the request (e.g. address data).
*
* Address session data is synced to the order itself later on by OrderController::update_order_from_cart()
*
* @param WP_REST_Request $request Full details about the request.
*/
private function update_customer_from_request( WP_REST_Request $request ) {
$customer = wc()->customer;
if ( isset( $request['billing_address'] ) ) {
foreach ( $request['billing_address'] as $key => $value ) {
if ( is_callable( [ $customer, "set_billing_$key" ] ) ) {
$customer->{"set_billing_$key"}( $value );
}
}
}
if ( isset( $request['shipping_address'] ) ) {
foreach ( $request['shipping_address'] as $key => $value ) {
if ( is_callable( [ $customer, "set_shipping_$key" ] ) ) {
$customer->{"set_shipping_$key"}( $value );
}
}
}
$customer->save();
}
/**
* Update the current order using the posted values from the request.
*
* @param WP_REST_Request $request Full details about the request.
*/
private function update_order_from_request( WP_REST_Request $request ) {
if ( isset( $request['customer_note'] ) ) {
$this->order->set_customer_note( $request['customer_note'] );
}
$this->order->set_payment_method( $this->order->needs_payment() ? $this->get_request_payment_method( $request ) : '' );
$this->order->save();
}
/**
* For orders which do not require payment, just update status.
*
* @param WP_REST_Request $request Request object.
* @return PaymentResult
*/
private function process_without_payment( WP_REST_Request $request ) {
$this->order->payment_complete();
$result = new PaymentResult( 'success' );
$result->set_redirect_url( $this->order->get_checkout_order_received_url() );
return $result;
}
/**
* Fires an action hook instructing active payment gateways to process the payment for an order and provide a result.
*
* @throws RouteException On error.
* @param WP_REST_Request $request Request object.
* @return PaymentResult
*/
private function process_payment( WP_REST_Request $request ) {
try {
$result = new PaymentResult();
$context = new PaymentContext();
$context->set_payment_method( $this->get_request_payment_method_id( $request ) );
$context->set_payment_data( $this->get_request_payment_data( $request ) );
// Orders are made pending before attempting payment.
$this->order->update_status( 'pending' );
$context->set_order( $this->order );
/**
* Process payment with context.
*
* @hook woocommerce_rest_checkout_process_payment_with_context
*
* @throws Exception If there is an error taking payment, an Exception object can be thrown
* with an error message.
*
* @param PaymentContext $context Holds context for the payment, including order ID and payment method.
* @param PaymentResult $result Result object for the transaction.
*/
do_action_ref_array( 'woocommerce_rest_checkout_process_payment_with_context', [ $context, &$result ] );
if ( ! $result instanceof PaymentResult ) {
throw new RouteException( 'woocommerce_rest_checkout_invalid_payment_result', __( 'Invalid payment result received from payment method.', 'woocommerce' ), 500 );
}
return $result;
} catch ( Exception $e ) {
throw new RouteException( 'woocommerce_rest_checkout_process_payment_error', $e->getMessage(), 400 );
}
}
/**
* Gets the chosen payment method ID from the request.
*
* @throws RouteException On error.
* @param WP_REST_Request $request Request object.
* @return string
*/
private function get_request_payment_method_id( WP_REST_Request $request ) {
$payment_method_id = isset( $request['payment_method'] )
? wc_clean( wp_unslash( $request['payment_method'] ) )
: '';
if ( empty( $payment_method_id ) ) {
throw new RouteException(
'woocommerce_rest_checkout_missing_payment_method',
__( 'No payment method provided.', 'woocommerce' ),
400
);
}
return $payment_method_id;
}
/**
* Gets the chosen payment method from the request.
*
* @throws RouteException On error.
* @param WP_REST_Request $request Request object.
* @return \WC_Payment_Gateway
*/
private function get_request_payment_method( WP_REST_Request $request ) {
$payment_method_id = $this->get_request_payment_method_id( $request );
$available_gateways = WC()->payment_gateways->get_available_payment_gateways();
if ( ! isset( $available_gateways[ $payment_method_id ] ) ) {
throw new RouteException(
'woocommerce_rest_checkout_payment_method_disabled',
__( 'This payment gateway is not available.', 'woocommerce' ),
400
);
}
return $available_gateways[ $payment_method_id ];
}
/**
* Gets and formats payment request data.
*
* @param WP_REST_Request $request Request object.
* @return array
*/
private function get_request_payment_data( WP_REST_Request $request ) {
static $payment_data = [];
if ( ! empty( $payment_data ) ) {
return $payment_data;
}
if ( ! empty( $request['payment_data'] ) ) {
foreach ( $request['payment_data'] as $data ) {
$payment_data[ sanitize_key( $data['key'] ) ] = wc_clean( $data['value'] );
}
}
return $payment_data;
}
/**
* Order processing relating to customer account.
*
* Creates a customer account as needed (based on request & store settings) and updates the order with the new customer ID.
* Updates the order with user details (e.g. address).
*
* @internal CreateAccount class includes feature gating logic (i.e. this may not create an account depending on build).
* @internal Checkout signup is feature gated to WooCommerce 4.7 and newer; Because it requires updated my-account/lost-password screen in 4.7+ for setting initial password.
*
* @throws RouteException API error object with error details.
* @param WP_REST_Request $request Request object.
*/
private function process_customer( WP_REST_Request $request ) {
if ( defined( 'WC_VERSION' ) && version_compare( WC_VERSION, '4.7', '>=' ) ) {
try {
$create_account = Package::container()->get( CreateAccount::class );
$create_account->from_order_request( $request );
$this->order->set_customer_id( get_current_user_id() );
$this->order->save();
} catch ( Exception $error ) {
switch ( $error->getMessage() ) {
case 'registration-error-invalid-email':
throw new RouteException(
'registration-error-invalid-email',
__( 'Please provide a valid email address.', 'woocommerce' ),
400
);
case 'registration-error-email-exists':
throw new RouteException(
'registration-error-email-exists',
__( 'An account is already registered with your email address. Please log in before proceeding.', 'woocommerce' ),
400
);
}
}
}
// Persist customer address data to account.
$this->order_controller->sync_customer_data_with_order( $this->order );
}
}