Social: Don't call endpoint for services on WPCOM (#40596)

* Don't make request if we are on WPCOM

* changelog

* Use transient

* Refactor to own class

* Remove param from script data

projects/packages/publicize/changelog/update-social-script-data-services-wpcom-check

@@ -0,0 +1,4 @@
+Significance: minor
+Type: changed
+
+Script data: Don't call service endpoint on wpcom

projects/packages/publicize/src/class-publicize-script-data.php

@@ -7,11 +7,11 @@
 
 namespace Automattic\Jetpack\Publicize;
 
-use Automattic\Jetpack\Connection\Client;
 use Automattic\Jetpack\Connection\Manager;
 use Automattic\Jetpack\Current_Plan;
 use Automattic\Jetpack\Publicize\Jetpack_Social_Settings\Settings;
 use Automattic\Jetpack\Publicize\Publicize_Utils as Utils;
+use Automattic\Jetpack\Publicize\Services as Publicize_Services;
 use Automattic\Jetpack\Status;
 use Automattic\Jetpack\Status\Host;
 use Jetpack_Options;
@@ -21,6 +21,8 @@
  */
 class Publicize_Script_Data {
 
+	const SERVICES_TRANSIENT = 'jetpack_social_services_list';
+
 	/**
 	 * Get the publicize instance - properly typed
 	 *
@@ -224,27 +226,7 @@ public static function get_shares_data() {
 	 * @return array List of external services and their settings.
 	 */
 	public static function get_supported_services() {
-		$site_id = Manager::get_site_id();
-		if ( is_wp_error( $site_id ) ) {
-			return array();
-		}
-		$path     = sprintf( '/sites/%d/external-services', $site_id );
-		$response = Client::wpcom_json_api_request_as_user( $path );
-		if ( is_wp_error( $response ) ) {
-			return array();
-		}
-		$body = json_decode( wp_remote_retrieve_body( $response ) );
-
-		$services = $body->services ?? array();
-
-		return array_values(
-			array_filter(
-				(array) $services,
-				function ( $service ) {
-					return isset( $service->type ) && 'publicize' === $service->type;
-				}
-			)
-		);
+		return Publicize_Services::get_all();
 	}
 
 	/**

projects/packages/publicize/src/class-services.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * Publicize Services class.
+ *
+ * @package automattic/jetpack-publicize
+ */
+
+namespace Automattic\Jetpack\Publicize;
+
+use Automattic\Jetpack\Connection\Client;
+use Automattic\Jetpack\Connection\Manager;
+
+/**
+ * Publicize Services class.
+ */
+class Services {
+
+	const SERVICES_TRANSIENT = 'jetpack_social_services_list';
+
+	/**
+	 * Get all services.
+	 *
+	 * @param bool $force_refresh Whether to force a refresh of the services.
+	 * @return array
+	 */
+	public static function get_all( $force_refresh = false ) {
+		if ( defined( 'IS_WPCOM' ) && constant( 'IS_WPCOM' ) ) {
+			if ( function_exists( 'require_lib' ) ) {
+				// @phan-suppress-next-line PhanUndeclaredFunction - phan is dumb not to see the function_exists check.
+				require_lib( 'external-connections' );
+			}
+
+			// @phan-suppress-next-line PhanUndeclaredClassMethod - We are here because we are on WPCOM.
+			$external_connections = \WPCOM_External_Connections::init();
+			$services             = array_values( $external_connections->get_external_services_list( 'publicize', get_current_blog_id() ) );
+
+			return $services;
+		}
+
+		// Checking the cache.
+		$services = get_transient( self::SERVICES_TRANSIENT );
+		if ( false !== $services && ! $force_refresh ) {
+			return $services;
+		}
+
+		return self::fetch_and_cache_services();
+	}
+
+	/**
+	 * Fetch services from the REST API and cache them.
+	 *
+	 * @return array
+	 */
+	public static function fetch_and_cache_services() {
+		// Fetch the services.
+		$site_id = Manager::get_site_id();
+		if ( is_wp_error( $site_id ) ) {
+			return array();
+		}
+		$path     = sprintf( '/sites/%d/external-services', $site_id );
+		$response = Client::wpcom_json_api_request_as_user( $path );
+		if ( is_wp_error( $response ) ) {
+			return array();
+		}
+		$body = json_decode( wp_remote_retrieve_body( $response ) );
+
+		$services = $body->services ?? array();
+
+		$formatted_services = array_values(
+			array_filter(
+				(array) $services,
+				function ( $service ) {
+					return isset( $service->type ) && 'publicize' === $service->type;
+				}
+			)
+		);
+
+		if ( ! empty( $formatted_services ) ) {
+			set_transient( self::SERVICES_TRANSIENT, $formatted_services, DAY_IN_SECONDS );
+		}
+
+		return $formatted_services;
+	}
+}