Add update subscription plan webhook handler

modules/ppcp-webhooks/src/Handler/BillingPlanUpdated.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Handles the Webhook BILLING.PLAN.UPDATED
+ *
+ * @package WooCommerce\PayPalCommerce\Webhooks\Handler
+ */
+
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Webhooks\Handler;
+
+use Psr\Log\LoggerInterface;
+use WP_REST_Request;
+use WP_REST_Response;
+
+/**
+ * Class BillingPlanUpdated
+ */
+class BillingPlanUpdated implements RequestHandler {
+
+	/**
+	 * The logger.
+	 *
+	 * @var LoggerInterface
+	 */
+	private $logger;
+
+	/**
+	 * BillingPlanUpdated constructor.
+	 *
+	 * @param LoggerInterface $logger The logger.
+	 */
+	public function __construct( LoggerInterface $logger ) {
+		$this->logger = $logger;
+	}
+
+	/**
+	 * The event types a handler handles.
+	 *
+	 * @return string[]
+	 */
+	public function event_types(): array {
+		return array(
+			'BILLING.PLAN.UPDATED',
+		);
+	}
+
+	/**
+	 * Whether a handler is responsible for a given request or not.
+	 *
+	 * @param WP_REST_Request $request The request.
+	 *
+	 * @return bool
+	 */
+	public function responsible_for_request( WP_REST_Request $request ): bool {
+		return in_array( $request['event_type'], $this->event_types(), true );
+	}
+
+	/**
+	 * Responsible for handling the request.
+	 *
+	 * @param WP_REST_Request $request The request.
+	 *
+	 * @return WP_REST_Response
+	 */
+	public function handle_request( WP_REST_Request $request ): WP_REST_Response {
+		$plan_id = wc_clean( wp_unslash( $request['resource']['id'] ?? '' ) );
+		if ( $plan_id ) {
+			$products = wc_get_products(
+				array(
+					'meta_key' => 'ppcp_subscription_product',
+				)
+			);
+
+			foreach ( $products as $product ) {
+				if ( $product->meta_exists( 'ppcp_subscription_plan' ) ) {
+					$plan_name = wc_clean( wp_unslash( $request['resource']['name'] ?? '' ) );
+					if ( $plan_name !== $product->get_meta( '_ppcp_subscription_plan_name' ) ) {
+						$product->update_meta_data( '_ppcp_subscription_plan_name', $plan_name );
+						$product->save();
+					}
+
+					$billing_cycles = wc_clean( wp_unslash( $request['resource']['billing_cycles'] ?? array() ) );
+					if ( $billing_cycles ) {
+						$price = $billing_cycles[0]['pricing_scheme']['fixed_price']['value'] ?? '';
+						if ( $price && round( $price, 2 ) !== round( $product->get_meta( '_subscription_price' ), 2 ) ) {
+							$product->update_meta_data( '_subscription_price', $price );
+							$product->save();
+						}
+					}
+
+					$payment_preferences = wc_clean( wp_unslash( $request['resource']['payment_preferences'] ?? array() ) );
+					if ( $payment_preferences ) {
+						$setup_fee = $payment_preferences['setup_fee']['value'] ?? '';
+						if ( $setup_fee && round( $setup_fee, 2 ) !== round( $product->get_meta( '_subscription_sign_up_fee' ), 2 ) ) {
+							$product->update_meta_data( '_subscription_sign_up_fee', $setup_fee );
+							$product->save();
+						}
+					}
+				}
+			}
+		}
+
+		$response['success'] = true;
+		return new WP_REST_Response( $response );
+	}
+}