Handle continuation mode in blocks

.psalm/wcblocks.php

@@ -368,3 +368,14 @@ namespace Automattic\WooCommerce\Blocks\Payments {
 		}
 	}
 }
+
+/**
+ * Registers and validates payment requirements callbacks.
+ *
+ * @see Automattic\WooCommerce\StoreApi\Schemas\ExtendSchema::register_payment_requirements()
+ *
+ * @param array $args Args to pass to register_payment_requirements.
+ * @returns boolean|\WP_Error True on success, WP_Error on fail.
+ */
+function woocommerce_store_api_register_payment_requirements( $args ) {
+}

modules/ppcp-blocks/resources/js/checkout-block.js

@@ -1,5 +1,5 @@
 import {useEffect, useState} from '@wordpress/element';
-import {registerExpressPaymentMethod} from '@woocommerce/blocks-registry';
+import {registerExpressPaymentMethod, registerPaymentMethod} from '@woocommerce/blocks-registry';
 import {paypalOrderToWcShippingAddress, paypalPayerToWc} from "./Helper/Address";
 import {loadPaypalScript} from '../../../ppcp-button/resources/js/modules/Helper/ScriptLoading'
 
@@ -116,6 +116,17 @@ const PayPalComponent = ({
         }
 
         const unsubscribeProcessing = onPaymentSetup(() => {
+            if (config.scriptData.continuation) {
+                return {
+                    type: responseTypes.SUCCESS,
+                    meta: {
+                        paymentMethodData: {
+                            'paypal_order_id': config.scriptData.continuation.order_id,
+                        },
+                    },
+                };
+            }
+
             const shippingAddress = paypalOrderToWcShippingAddress(paypalOrder);
             let billingAddress = paypalPayerToWc(paypalOrder.payer);
             // no billing address, such as if billing address retrieval is not allowed in the merchant account
@@ -139,6 +150,14 @@ const PayPalComponent = ({
         };
     }, [onPaymentSetup, paypalOrder, activePaymentMethod]);
 
+    if (config.scriptData.continuation) {
+        return (
+            <div dangerouslySetInnerHTML={{__html: config.scriptData.continuation.cancel.html}}>
+
+            </div>
+        )
+    }
+
     if (!loaded) {
         return null;
     }
@@ -157,7 +176,14 @@ const PayPalComponent = ({
     );
 }
 
-registerExpressPaymentMethod({
+const features = ['products'];
+let registerMethod = registerExpressPaymentMethod;
+if (config.scriptData.continuation) {
+    features.push('ppcp_continuation');
+    registerMethod = registerPaymentMethod;
+}
+
+registerMethod({
     name: config.id,
     label: <div dangerouslySetInnerHTML={{__html: config.title}}/>,
     content: <PayPalComponent/>,
@@ -165,6 +191,6 @@ registerExpressPaymentMethod({
     ariaLabel: config.title,
     canMakePayment: () => config.enabled,
     supports: {
-        features: ['products'],
+        features: features,
     },
 });

modules/ppcp-blocks/services.php

@@ -30,7 +30,9 @@ return array(
 			$container->get( 'button.smart-button' ),
 			$container->get( 'wcgateway.settings' ),
 			$container->get( 'wcgateway.settings.status' ),
-			$container->get( 'wcgateway.paypal-gateway' )
+			$container->get( 'wcgateway.paypal-gateway' ),
+			$container->get( 'session.cancellation.view' ),
+			$container->get( 'session.handler' )
 		);
 	},
 );

modules/ppcp-blocks/src/BlocksModule.php

@@ -10,6 +10,7 @@ declare(strict_types=1);
 namespace WooCommerce\PayPalCommerce\Blocks;
 
 use Automattic\WooCommerce\Blocks\Payments\PaymentMethodRegistry;
+use WooCommerce\PayPalCommerce\Button\Assets\SmartButton;
 use WooCommerce\PayPalCommerce\Vendor\Dhii\Container\ServiceProvider;
 use WooCommerce\PayPalCommerce\Vendor\Dhii\Modular\Module\ModuleInterface;
 use WooCommerce\PayPalCommerce\Vendor\Interop\Container\ServiceProviderInterface;
@@ -40,6 +41,21 @@ class BlocksModule implements ModuleInterface {
 					$payment_method_registry->register( $c->get( 'blocks.method' ) );
 				}
 			);
+
+			woocommerce_store_api_register_payment_requirements(
+				array(
+					'data_callback' => function() use ( $c ): array {
+						$smart_button = $c->get( 'button.smart-button' );
+						assert( $smart_button instanceof SmartButton );
+
+						if ( isset( $smart_button->script_data()['continuation'] ) ) {
+							return array( 'ppcp_continuation' );
+						}
+
+						return array();
+					},
+				)
+			);
 		}
 	}
 

modules/ppcp-blocks/src/PayPalPaymentMethod.php

@@ -11,6 +11,9 @@ namespace WooCommerce\PayPalCommerce\Blocks;
 
 use Automattic\WooCommerce\Blocks\Payments\Integrations\AbstractPaymentMethodType;
 use WooCommerce\PayPalCommerce\Button\Assets\SmartButtonInterface;
+use WooCommerce\PayPalCommerce\Session\Cancellation\CancelController;
+use WooCommerce\PayPalCommerce\Session\Cancellation\CancelView;
+use WooCommerce\PayPalCommerce\Session\SessionHandler;
 use WooCommerce\PayPalCommerce\WcGateway\Gateway\PayPalGateway;
 use WooCommerce\PayPalCommerce\WcGateway\Helper\SettingsStatus;
 use WooCommerce\PayPalCommerce\WcGateway\Settings\Settings;
@@ -61,6 +64,20 @@ class PayPalPaymentMethod extends AbstractPaymentMethodType {
 	 */
 	private $gateway;
 
+	/**
+	 * The cancellation view.
+	 *
+	 * @var CancelView
+	 */
+	private $cancellation_view;
+
+	/**
+	 * The Session handler.
+	 *
+	 * @var SessionHandler
+	 */
+	private $session_handler;
+
 	/**
 	 * Assets constructor.
 	 *
@@ -70,6 +87,8 @@ class PayPalPaymentMethod extends AbstractPaymentMethodType {
 	 * @param Settings             $plugin_settings The settings.
 	 * @param SettingsStatus       $settings_status The Settings status helper.
 	 * @param PayPalGateway        $gateway The WC gateway.
+	 * @param CancelView           $cancellation_view The cancellation view.
+	 * @param SessionHandler       $session_handler The Session handler.
 	 */
 	public function __construct(
 		string $module_url,
@@ -77,15 +96,19 @@ class PayPalPaymentMethod extends AbstractPaymentMethodType {
 		SmartButtonInterface $smart_button,
 		Settings $plugin_settings,
 		SettingsStatus $settings_status,
-		PayPalGateway $gateway
+		PayPalGateway $gateway,
+		CancelView $cancellation_view,
+		SessionHandler $session_handler
 	) {
-		$this->name            = PayPalGateway::ID;
-		$this->module_url      = $module_url;
-		$this->version         = $version;
-		$this->smart_button    = $smart_button;
-		$this->plugin_settings = $plugin_settings;
-		$this->settings_status = $settings_status;
-		$this->gateway         = $gateway;
+		$this->name              = PayPalGateway::ID;
+		$this->module_url        = $module_url;
+		$this->version           = $version;
+		$this->smart_button      = $smart_button;
+		$this->plugin_settings   = $plugin_settings;
+		$this->settings_status   = $settings_status;
+		$this->gateway           = $gateway;
+		$this->cancellation_view = $cancellation_view;
+		$this->session_handler   = $session_handler;
 	}
 
 	/**
@@ -126,6 +149,14 @@ class PayPalPaymentMethod extends AbstractPaymentMethodType {
 	public function get_payment_method_data() {
 		$script_data = $this->smart_button->script_data();
 
+		if ( isset( $script_data['continuation'] ) ) {
+			$url = add_query_arg( array( CancelController::NONCE => wp_create_nonce( CancelController::NONCE ) ), wc_get_checkout_url() );
+
+			$script_data['continuation']['cancel'] = array(
+				'html' => $this->cancellation_view->render_session_cancellation( $url, $this->session_handler->funding_source() ),
+			);
+		}
+
 		return array(
 			'id'          => $this->gateway->id,
 			'title'       => $this->gateway->title,

modules/ppcp-button/src/Assets/SmartButton.php

@@ -927,6 +927,15 @@ class SmartButton implements SmartButtonInterface {
 			$localize['button']['style']['tagline'] = false;
 		}
 
+		if ( $this->is_paypal_continuation() ) {
+			$order = $this->session_handler->order();
+			assert( $order !== null );
+
+			$localize['continuation'] = array(
+				'order_id' => $order->id(),
+			);
+		}
+
 		$this->request_data->dequeue_nonce_fix();
 		return $localize;
 	}