v7.9-a24: * **3rd** Cache purge compatibility w/ RankMath SEO (Ryan D, PR#977)

Update rank-math.cls.php

Author: timotei-litespeed

thirdparty/entry.inc.php

@@ -52,3 +52,4 @@
 add_action('litespeed_init', 'LiteSpeed\Thirdparty\Elementor::preload');
 add_action('litespeed_init', 'LiteSpeed\Thirdparty\Gravity_Forms::preload');
 add_action('litespeed_init', 'LiteSpeed\Thirdparty\Perfmatters::preload');
+add_action('litespeed_init', 'LiteSpeed\Thirdparty\Rank_Math::preload');

thirdparty/rank-math.cls.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * The Third Party integration with the Rank Math SEO plugin.
+ *
+ * @since 7.9
+ * @package LiteSpeed
+ * @subpackage LiteSpeed_Cache\Thirdparty
+ */
+
+namespace LiteSpeed\Thirdparty;
+
+defined('WPINC') || exit();
+
+/**
+ * Provides compatibility for the Rank Math SEO plugin.
+ *
+ * Rank Math maintains its own internal sitemap cache that can
+ * occasionally fail to update when posts/pages are modified via
+ * programmatic flows (page builders, duplicator plugins, etc.).
+ * Tying its sitemap cache invalidation to LiteSpeed's "Purge All"
+ * gives users a reliable way to force a refresh.
+ */
+class Rank_Math {
+
+	/**
+	 * Preload hooks for Rank Math integration.
+	 *
+	 * @since 7.9
+	 * @access public
+	 * @return void
+	 */
+	public static function preload() {
+		if ( ! defined( 'RANK_MATH_VERSION' ) ) {
+			return;
+		}
+		add_action('litespeed_purged_post', __CLASS__ . '::invalidate_sitemap_cache');
+		// add_action('litespeed_purged_all', __CLASS__ . '::invalidate_sitemap_cache');
+	}
+
+	/**
+	 * Invalidates Rank Math's sitemap cache.
+	 *
+	 * @since 7.9
+	 * @return void
+	 */
+	public static function invalidate_sitemap_cache() {
+		if (class_exists('\\RankMath\\Sitemap\\Cache')) {
+			\RankMath\Sitemap\Cache::invalidate_storage();
+
+			do_action( 'litespeed_debug', '[3rd] Rank Math sitemap cache invalidated' );
+		}
+	}
+}