Enhancement/9955 post meta settings class

includes/Core/Storage/Post_Meta_Setting.php

@@ -19,12 +19,6 @@
  */
 abstract class Post_Meta_Setting {
 
-	/**
-	 * The post meta key for this setting.
-	 * Override in a sub-class.
-	 */
-	const META_KEY = '';
-
 	/**
 	 * Post_Meta_Interface implementation.
 	 *
@@ -44,6 +38,15 @@ public function __construct( Post_Meta_Interface $post_meta ) {
 		$this->post_meta = $post_meta;
 	}
 
+	/**
+	 * Gets the meta key for the setting.
+	 *
+	 * @since n.e.x.t
+	 *
+	 * @return string Meta key.
+	 */
+	abstract protected function get_meta_key(): string;
+
 	/**
 	 * Registers the post setting in WordPress.
 	 *
@@ -52,7 +55,7 @@ public function __construct( Post_Meta_Interface $post_meta ) {
 	public function register() {
 		register_meta(
 			'post',
-			static::META_KEY,
+			$this->get_meta_key(),
 			array(
 				'type'              => $this->get_type(),
 				'sanitize_callback' => $this->get_sanitize_callback(),
@@ -127,7 +130,7 @@ protected function get_show_in_rest() {
 	 * @return bool True if the meta key exists, otherwise false.
 	 */
 	public function has( $post_id ) {
-		return metadata_exists( 'post', $post_id, static::META_KEY );
+		return metadata_exists( 'post', $post_id, $this->get_meta_key() );
 	}
 
 	/**
@@ -143,7 +146,7 @@ public function get( $post_id ) {
 			return $this->get_default();
 		}
 
-		return $this->post_meta->get( $post_id, static::META_KEY, true );
+		return $this->post_meta->get( $post_id, $this->get_meta_key(), true );
 	}
 
 	/**
@@ -156,7 +159,7 @@ public function get( $post_id ) {
 	 * @return bool TRUE on success, otherwise FALSE.
 	 */
 	public function set( $post_id, $value ) {
-		return $this->post_meta->update( $post_id, static::META_KEY, $value );
+		return $this->post_meta->update( $post_id, $this->get_meta_key(), $value );
 	}
 
 	/**
@@ -168,6 +171,6 @@ public function set( $post_id, $value ) {
 	 * @return bool TRUE on success, otherwise FALSE.
 	 */
 	public function delete( $post_id ) {
-		return $this->post_meta->delete( $post_id, static::META_KEY );
+		return $this->post_meta->delete( $post_id, $this->get_meta_key() );
 	}
 }

includes/Modules/Reader_Revenue_Manager.php

@@ -31,10 +31,12 @@
 use Google\Site_Kit\Core\REST_API\Data_Request;
 use Google\Site_Kit\Core\REST_API\Exception\Missing_Required_Param_Exception;
 use Google\Site_Kit\Core\Site_Health\Debug_Data;
+use Google\Site_Kit\Core\Storage\Post_Meta;
 use Google\Site_Kit\Core\Tags\Guards\Tag_Environment_Type_Guard;
 use Google\Site_Kit\Core\Tags\Guards\Tag_Verify_Guard;
 use Google\Site_Kit\Core\Util\Feature_Flags;
 use Google\Site_Kit\Core\Util\URL;
+use Google\Site_Kit\Modules\Reader_Revenue_Manager\Post_Product_ID;
 use Google\Site_Kit\Modules\Reader_Revenue_Manager\Settings;
 use Google\Site_Kit\Modules\Reader_Revenue_Manager\Synchronize_OnboardingState;
 use Google\Site_Kit\Modules\Reader_Revenue_Manager\Tag_Guard;
@@ -77,6 +79,13 @@ public function register() {
 		);
 		$synchronize_onboarding_state->register();
 
+		if ( Feature_Flags::enabled( 'rrmModuleV2' ) && $this->is_connected() ) {
+			$post_meta       = new Post_Meta();
+			$publication_id  = $this->get_settings()->get()['publicationID'];
+			$post_product_id = new Post_Product_ID( $post_meta, $publication_id );
+			$post_product_id->register();
+		}
+
 		add_action( 'load-toplevel_page_googlesitekit-dashboard', array( $synchronize_onboarding_state, 'maybe_schedule_synchronize_onboarding_state' ) );
 		add_action( 'load-toplevel_page_googlesitekit-settings', array( $synchronize_onboarding_state, 'maybe_schedule_synchronize_onboarding_state' ) );
 

includes/Modules/Reader_Revenue_Manager/Post_Product_ID.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * Class Google\Site_Kit\Modules\Reader_Revenue_Manager\Post_Product_ID
+ *
+ * @package   Google\Site_Kit\Modules\Reader_Revenue_Manager
+ * @copyright 2025 Google LLC
+ * @license   https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
+ * @link      https://sitekit.withgoogle.com
+ */
+
+namespace Google\Site_Kit\Modules\Reader_Revenue_Manager;
+
+use Google\Site_Kit\Core\Storage\Post_Meta;
+use Google\Site_Kit\Core\Storage\Post_Meta_Setting;
+
+/**
+ * Class for associating product ID to post meta.
+ *
+ * @since n.e.x.t
+ * @access private
+ * @ignore
+ */
+class Post_Product_ID extends Post_Meta_Setting {
+	/**
+	 * Publication ID.
+	 *
+	 * @since n.e.x.t
+	 *
+	 * @var string
+	 */
+	private string $publication_id;
+
+	/**
+	 * Post_Product_ID constructor.
+	 *
+	 * @since n.e.x.t
+	 *
+	 * @param Post_Meta $post_meta Post_Meta instance.
+	 * @param string    $publication_id Publication ID.
+	 */
+	public function __construct( Post_Meta $post_meta, string $publication_id ) {
+		parent::__construct( $post_meta );
+
+		$this->publication_id = $publication_id;
+	}
+
+	/**
+	 * Gets the meta key for the setting.
+	 *
+	 * @since n.e.x.t
+	 *
+	 * @return string Meta key.
+	 */
+	protected function get_meta_key(): string {
+		return 'googlesitekit_rrm_' . $this->publication_id . ':productID';
+	}
+
+	/**
+	 * Gets the `show_in_rest` value for this postmeta setting value.
+	 *
+	 * @since n.e.x.t
+	 *
+	 * @return bool|Array Any valid value for the `show_in_rest`
+	 */
+	protected function get_show_in_rest() {
+		return true;
+	}
+}

tests/phpunit/integration/Modules/Reader_Revenue_Manager/Post_Product_IDTest.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * Class Google\Site_Kit\Tests\Modules\Reader_Revenue_Manager\Post_Product_ID_Test
+ *
+ * @package   Google\Site_Kit\Tests\Modules\Reader_Revenue_Manager
+ * @copyright 2025 Google LLC
+ * @license   https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
+ * @link      https://sitekit.withgoogle.com
+ */
+
+namespace Google\Site_Kit\Tests\Modules\Reader_Revenue_Manager;
+
+use Google\Site_Kit\Core\Storage\Post_Meta;
+use Google\Site_Kit\Modules\Reader_Revenue_Manager\Post_Product_ID;
+use Google\Site_Kit\Tests\TestCase;
+
+class Post_Product_ID_Test extends TestCase {
+
+	/**
+	 * @var Post_Product_ID
+	 */
+	private $setting;
+
+	public function set_up(): void {
+		parent::set_up();
+
+		$post_meta     = new Post_Meta();
+		$this->setting = new Post_Product_ID( $post_meta, 'test_publication_id' );
+		$this->setting->register();
+	}
+
+	public function test_product_id_meta_registered() {
+		$registered = registered_meta_key_exists( 'post', 'googlesitekit_rrm_test_publication_id:productID' );
+
+		$this->assertTrue( $registered );
+	}
+
+	public function test_show_in_rest() {
+		$meta_key     = 'googlesitekit_rrm_test_publication_id:productID';
+		$show_in_rest = get_registered_meta_keys( 'post' )[ $meta_key ]['show_in_rest'];
+
+		$this->assertTrue( $show_in_rest );
+	}
+}

tests/phpunit/integration/Modules/Reader_Revenue_ManagerTest.php

@@ -486,6 +486,56 @@ public function test_check_service_entity_access_no_access_unavailable_publicati
 		$this->assertEquals( false, $access );
 	}
 
+	public function test_product_id_setting_registered() {
+		$publication_id = 'ABCDEFGH';
+		$this->enable_feature( 'rrmModuleV2' );
+
+		$this->reader_revenue_manager->get_settings()->set(
+			array(
+				'publicationID' => $publication_id,
+			)
+		);
+
+		$this->reader_revenue_manager->register();
+
+		$registered = registered_meta_key_exists( 'post', 'googlesitekit_rrm_' . $publication_id . ':productID' );
+
+		$this->assertTrue( $registered );
+	}
+
+	public function test_publication_id_empty_product_id_setting_not_registered() {
+		$publication_id = 'ABCDEFGH';
+		$this->enable_feature( 'rrmModuleV2' );
+
+		$this->reader_revenue_manager->get_settings()->set(
+			array(
+				'publicationID' => '',
+			)
+		);
+
+		$this->reader_revenue_manager->register();
+
+		$registered = registered_meta_key_exists( 'post', 'googlesitekit_rrm_' . $publication_id . ':productID' );
+
+		$this->assertFalse( $registered );
+	}
+
+	public function test_feature_disabled_product_id_setting_not_registered() {
+		$publication_id = 'ABCDEFGH';
+
+		$this->reader_revenue_manager->get_settings()->set(
+			array(
+				'publicationID' => $publication_id,
+			)
+		);
+
+		$this->reader_revenue_manager->register();
+
+		$registered = registered_meta_key_exists( 'post', 'googlesitekit_rrm_' . $publication_id . ':productID' );
+
+		$this->assertFalse( $registered );
+	}
+
 	public function test_block_editor_script_enqueued() {
 		$this->enable_feature( 'rrmModuleV2' );