Closes #7071 Clean CSS & fonts for host fonts locally

inc/Engine/Media/Fonts/Clean/Clean.php

@@ -0,0 +1,61 @@
+<?php
+declare(strict_types=1);
+
+namespace WP_Rocket\Engine\Media\Fonts\Clean;
+
+class Clean {
+	/**
+	 * Filesystem instance
+	 *
+	 * @var Filesystem
+	 */
+	private $filesystem;
+
+	/**
+	 * Base path for fonts
+	 *
+	 * @var string
+	 */
+	private $base_path;
+
+	/**
+	 * Constructor
+	 *
+	 * @param Filesystem $filesystem Filesystem instance.
+	 */
+	public function __construct( $filesystem ) {
+		$this->filesystem = $filesystem;
+		$this->base_path  = rocket_get_constant( 'WP_ROCKET_CACHE_ROOT_PATH', '' ) . 'fonts/' . get_current_blog_id() . '/';
+	}
+
+	/**
+	 * Clean CSS & fonts files stored locally
+	 *
+	 * @return void
+	 */
+	public function clean_css_fonts() {
+		$this->filesystem->delete_all_files_from_directory( $this->base_path );
+	}
+
+	/**
+	 * Clean CSS & fonts files stored locally on option change
+	 *
+	 * @param mixed $old_value Old option value.
+	 * @param mixed $value     New option value.
+	 *
+	 * @return void
+	 */
+	public function clean_on_option_change( $old_value, $value ) {
+		if ( ! isset( $old_value['host_fonts_locally'], $value['host_fonts_locally'] ) ) {
+			return;
+		}
+
+		if ( $old_value['host_fonts_locally'] === $value['host_fonts_locally'] ) {
+			return;
+		}
+
+		$this->clean_css_fonts();
+
+		do_action( 'rocket_fonts_locally_hosted_changed' );
+	}
+}

inc/Engine/Media/Fonts/Clean/Subscriber.php

@@ -0,0 +1,57 @@
+<?php
+declare(strict_types=1);
+
+namespace WP_Rocket\Engine\Media\Fonts\Clean;
+
+use WP_Rocket\Event_Management\Subscriber_Interface;
+
+class Subscriber implements Subscriber_Interface {
+	/**
+	 * Clean instance
+	 *
+	 * @var Clean
+	 */
+	private $clean;
+
+	/**
+	 * Constructor
+	 *
+	 * @param Clean $clean Clean instance.
+	 */
+	public function __construct( Clean $clean ) {
+		$this->clean = $clean;
+	}
+
+	/**
+	 * Returns an array of events that this subscriber wants to listen to.
+	 *
+	 * @return array
+	 */
+	public static function get_subscribed_events(): array {
+		return [
+			'rocket_clean_domain'              => 'clean_css_fonts',
+			'update_option_wp_rocket_settings' => [ 'clean_on_option_change', 10, 2 ],
+		];
+	}
+
+	/**
+	 * Clean CSS & fonts files stored locally
+	 *
+	 * @return void
+	 */
+	public function clean_css_fonts() {
+		$this->clean->clean_css_fonts();
+	}
+
+	/**
+	 * Clean CSS & fonts files stored locally on option change
+	 *
+	 * @param mixed $old_value Old option value.
+	 * @param mixed $value     New option value.
+	 *
+	 * @return void
+	 */
+	public function clean_on_option_change( $old_value, $value ) {
+		$this->clean->clean_on_option_change( $old_value, $value );
+	}
+}

inc/Engine/Optimization/RUCSS/Admin/Subscriber.php

@@ -70,6 +70,7 @@ public static function get_subscribed_events(): array {
 			'switch_theme'                            => 'truncate_used_css',
 			'permalink_structure_changed'             => 'truncate_used_css',
 			'rocket_domain_options_changed'           => 'truncate_used_css',
+			'rocket_host_fonts_locally_changed'       => 'truncate_used_css',
 			'wp_trash_post'                           => 'delete_used_css_on_update_or_delete',
 			'delete_post'                             => 'delete_used_css_on_update_or_delete',
 			'clean_post_cache'                        => 'delete_used_css_on_update_or_delete',