Add resubscribe webhooks button

modules/ppcp-webhooks/extensions.php

@@ -29,6 +29,18 @@ return array(
 					return $container->get( 'webhook.status.registered-webhooks-data' );
 				},
 			),
+			'webhooks_resubscribe' => array(
+				'title'        => __( 'Resubscribe webhooks', 'woocommerce-paypal-payments' ),
+				'type'         => 'ppcp-text',
+				'text'         => '<button type="button" class="button ppcp-webhooks-resubscribe">' . esc_html__( 'Resubscribe', 'woocommerce-paypal-payments' ) . '</button>',
+				'screens'      => array(
+					State::STATE_PROGRESSIVE,
+					State::STATE_ONBOARDED,
+				),
+				'requirements' => array(),
+				'gateway'      => WebhooksStatusPage::ID,
+				'description'  => __( 'Click to remove the current webhook subscription and subscribe again, for example, if the website domain or URL structure changed.', 'woocommerce-paypal-payments' ),
+			),
 		);
 
 		return array_merge( $fields, $status_page_fields );

modules/ppcp-webhooks/resources/js/status-page.js

@@ -1,6 +1,42 @@
 document.addEventListener(
     'DOMContentLoaded',
     () => {
+        const resubscribeBtn = jQuery(PayPalCommerceGatewayWebhooksStatus.resubscribe.button);
 
+        resubscribeBtn.click(async () => {
+            resubscribeBtn.prop('disabled', true);
+
+            const response = await fetch(
+                PayPalCommerceGatewayWebhooksStatus.resubscribe.endpoint,
+                {
+                    method: 'POST',
+                    headers: {
+                        'content-type': 'application/json'
+                    },
+                    body: JSON.stringify(
+                        {
+                            nonce: PayPalCommerceGatewayWebhooksStatus.resubscribe.nonce,
+                        }
+                    )
+                }
+            );
+
+            const reportError = error => {
+                const msg = PayPalCommerceGatewayWebhooksStatus.resubscribe.failureMessage + ' ' + error;
+                alert(msg);
+            }
+
+            if (!response.ok) {
+                try {
+                    const result = await response.json();
+                    reportError(result.data);
+                } catch (exc) {
+                    console.error(exc);
+                    reportError(response.status);
+                }
+            }
+
+            window.location.reload();
+        });
     }
 );

modules/ppcp-webhooks/services.php

@@ -13,6 +13,7 @@ use Exception;
 use WooCommerce\PayPalCommerce\ApiClient\Endpoint\WebhookEndpoint;
 use WooCommerce\PayPalCommerce\ApiClient\Entity\Webhook;
 use WooCommerce\PayPalCommerce\WcGateway\Assets\WebhooksStatusPageAssets;
+use WooCommerce\PayPalCommerce\Webhooks\Endpoint\ResubscribeEndpoint;
 use WooCommerce\PayPalCommerce\Webhooks\Handler\CheckoutOrderApproved;
 use WooCommerce\PayPalCommerce\Webhooks\Handler\CheckoutOrderCompleted;
 use WooCommerce\PayPalCommerce\Webhooks\Handler\PaymentCaptureCompleted;
@@ -112,6 +113,16 @@ return array(
 		);
 	},
 
+	'webhook.endpoint.resubscribe'            => static function ( $container ) : ResubscribeEndpoint {
+		$registrar = $container->get( 'webhook.registrar' );
+		$request_data            = $container->get( 'button.request-data' );
+
+		return new ResubscribeEndpoint(
+			$registrar,
+			$request_data
+		);
+	},
+
 	'webhook.module-url'                      => static function ( $container ): string {
 		return plugins_url(
 			'/modules/ppcp-webhooks/',

modules/ppcp-webhooks/src/Endpoint/class-resubscribeendpoint.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * The endpoint for resubscribing webhooks.
+ *
+ * @package WooCommerce\PayPalCommerce\Webhooks\Endpoint
+ */
+
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Webhooks\Endpoint;
+
+use Exception;
+use WooCommerce\PayPalCommerce\Button\Endpoint\RequestData;
+use WooCommerce\PayPalCommerce\Webhooks\WebhookRegistrar;
+
+/**
+ * Class ResubscribeEndpoint
+ */
+class ResubscribeEndpoint {
+
+	const ENDPOINT = 'ppc-webhooks-resubscribe';
+
+	/**
+	 * The webhooks registrar.
+	 *
+	 * @var WebhookRegistrar
+	 */
+	private $registrar;
+
+	/**
+	 * The Request Data helper object.
+	 *
+	 * @var RequestData
+	 */
+	private $request_data;
+
+	/**
+	 * ResubscribeEndpoint constructor.
+	 *
+	 * @param WebhookRegistrar $registrar The webhooks registrar.
+	 * @param RequestData      $request_data The Request Data helper object.
+	 */
+	public function __construct( WebhookRegistrar $registrar, RequestData $request_data ) {
+		$this->registrar    = $registrar;
+		$this->request_data = $request_data;
+	}
+
+	/**
+	 * Returns the nonce for the endpoint.
+	 *
+	 * @return string
+	 */
+	public static function nonce(): string {
+		return self::ENDPOINT;
+	}
+
+	/**
+	 * Handles the incoming request.
+	 */
+	public function handle_request() {
+		try {
+			// Validate nonce.
+			$this->request_data->read_request( $this->nonce() );
+
+			$this->registrar->unregister();
+
+			if ( ! $this->registrar->register() ) {
+				wp_send_json_error( 'Webhook subscription failed.', 500 );
+				return false;
+			}
+
+			wp_send_json_success();
+			return true;
+		} catch ( Exception $error ) {
+			wp_send_json_error( $error->getMessage(), 403 );
+			return false;
+		}
+	}
+}

modules/ppcp-webhooks/src/Status/Assets/class-webhooksstatuspageassets.php

@@ -11,6 +11,7 @@ namespace WooCommerce\PayPalCommerce\WcGateway\Assets;
 
 use WooCommerce\PayPalCommerce\ApiClient\Authentication\Bearer;
 use WooCommerce\PayPalCommerce\ApiClient\Exception\RuntimeException;
+use WooCommerce\PayPalCommerce\Webhooks\Endpoint\ResubscribeEndpoint;
 
 /**
  * Class WebhooksStatusPageAssets
@@ -69,7 +70,14 @@ class WebhooksStatusPageAssets {
 	 * @return array
 	 */
 	public function get_script_data() {
-		return array();
+		return array(
+			'resubscribe' => array(
+				'endpoint'       => home_url( \WC_AJAX::get_endpoint( ResubscribeEndpoint::ENDPOINT ) ),
+				'nonce'          => wp_create_nonce( ResubscribeEndpoint::nonce() ),
+				'button'         => '.ppcp-webhooks-resubscribe',
+				'failureMessage' => __( 'Operation failed. Check WooCommerce logs for more details.', 'woocommerce-paypal-payments' ),
+			),
+		);
 	}
 
 	/**

modules/ppcp-webhooks/src/class-webhookmodule.php

@@ -16,6 +16,7 @@ use Interop\Container\ServiceProviderInterface;
 use Psr\Container\ContainerInterface;
 use Psr\Log\LoggerInterface;
 use WooCommerce\PayPalCommerce\WcGateway\Assets\WebhooksStatusPageAssets;
+use WooCommerce\PayPalCommerce\Webhooks\Endpoint\ResubscribeEndpoint;
 use WooCommerce\PayPalCommerce\Webhooks\Status\WebhooksStatusPage;
 
 /**
@@ -83,6 +84,16 @@ class WebhookModule implements ModuleInterface {
 			}
 		);
 
+		add_action(
+			'wc_ajax_' . ResubscribeEndpoint::ENDPOINT,
+			static function () use ( $container ) {
+				$endpoint = $container->get( 'webhook.endpoint.resubscribe' );
+				assert( $endpoint instanceof ResubscribeEndpoint );
+
+				$endpoint->handle_request();
+			}
+		);
+
 		$page_id = $container->get( 'wcgateway.current-ppcp-settings-page-id' );
 		if ( WebhooksStatusPage::ID === $page_id ) {
 			$GLOBALS['hide_save_button'] = true;