first commit

wp-content/plugins/wp-optimize/compatibility/class-wpo-polylang-compatibility.php

@@ -0,0 +1,88 @@
+<?php
+if (!defined('ABSPATH')) {
+	die('No direct access allowed');
+}
+
+/**
+ * Adds compatibility for Polylang plugin.
+ */
+class WPO_Polylang_Compatibility {
+
+	/**
+	 * Instance of this class
+	 *
+	 * @var WPO_Polylang_Compatibility|null
+	 */
+	protected static $instance = null;
+	
+	/**
+	 * Constructor.
+	 */
+	private function __construct() {
+		// Check if polylang is active
+		if (!class_exists('Polylang')) {
+			return;
+		}
+
+		// Add action hooks to delete cache for all languages
+		add_action('wpo_single_post_cache_deleted', array($this, 'polylang_delete_post_cache_for_all_languages'));
+		add_action('wpo_single_post_feed_cache_deleted', array($this, 'polylang_delete_post_feed_cache_for_all_languages'));
+	}
+
+	/**
+	 * Returns singleton instance.
+	 *
+	 * @return WPO_Polylang_Compatibility
+	 */
+	public static function instance() {
+		if (null == self::$instance) {
+			self::$instance = new self;
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * Deletes cache files for all connected langauges for a post.
+	 *
+	 * @param int $deleted_post_id Post id whose cache file is already deleted.
+	 */
+	public function polylang_delete_post_cache_for_all_languages($deleted_post_id) {
+
+		// Check if polylang translation function is available
+		if (!function_exists('pll_get_post_translations')) {
+			return;
+		}
+
+		$translated_post_ids = pll_get_post_translations($deleted_post_id);
+
+		// Delete cache for each translated post
+		foreach ($translated_post_ids as $post_id) {
+			if ($deleted_post_id !== $post_id) {
+				WPO_Page_Cache::really_delete_single_post_cache($post_id);
+			}
+		}
+	}
+
+	/**
+	 * Deletes cache files for all connected langauges for a post feed.
+	 *
+	 * @param int $deleted_post_id Post id whose cache file for feed is already deleted.
+	 */
+	public function polylang_delete_post_feed_cache_for_all_languages($deleted_post_id) {
+		
+		// Check if polylang translation function is available
+		if (!function_exists('pll_get_post_translations')) {
+			return;
+		}
+
+		$translated_post_ids = pll_get_post_translations($deleted_post_id);
+
+		// Delete cache for each translated post
+		foreach ($translated_post_ids as $post_id) {
+			if ($deleted_post_id !== $post_id) {
+				WPO_Page_Cache::really_delete_post_feed_cache($post_id);
+			}
+		}
+	}
+}