From aef0d3be591ad27493281956fa7315d2b05fcd99 Mon Sep 17 00:00:00 2001
From: Gael Robin <robin.gael@gmail.com>
Date: Thu, 14 Nov 2024 06:00:21 +0100
Subject: [PATCH] Closes #7065: Add a filter to change the output

---
 .../Media/Fonts/Frontend/Controller.php       | 54 +++++++++++++++++--
 inc/Engine/Media/Fonts/ServiceProvider.php    |  4 ++
 2 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/inc/Engine/Media/Fonts/Frontend/Controller.php b/inc/Engine/Media/Fonts/Frontend/Controller.php
index 82bdc47644..adf4bfed9a 100644
--- a/inc/Engine/Media/Fonts/Frontend/Controller.php
+++ b/inc/Engine/Media/Fonts/Frontend/Controller.php
@@ -6,6 +6,7 @@
 use WP_Rocket\Engine\Media\Fonts\Context\Context;
 use WP_Rocket\Engine\Optimization\RegexTrait;
 use WP_Rocket\Logger\Logger;
+use WP_Filesystem_Direct;
 
 class Controller {
 	use RegexTrait;
@@ -24,14 +25,27 @@ class Controller {
 	 */
 	private $base_url;
 
+
+	/**
+	 * WordPress filesystem.
+	 *
+	 * @var WP_Filesystem_Direct
+	 */
+	private $filesystem;
+
+	private $base_path;
+
 	/**
 	 * Constructor.
 	 *
-	 * @param Context $context Context instance.
+	 * @param Context              $context Context instance.
+	 * @param WP_Filesystem_Direct $filesystem WordPress filesystem.
 	 */
-	public function __construct( Context $context ) {
-		$this->context  = $context;
-		$this->base_url = rocket_get_constant( 'WP_ROCKET_CACHE_ROOT_URL', '' ) . 'fonts/' . get_current_blog_id() . '/';
+	public function __construct( Context $context, WP_Filesystem_Direct $filesystem ) {
+		$this->context    = $context;
+		$this->base_path  = rocket_get_constant( 'WP_ROCKET_CACHE_ROOT_PATH', '' ) . 'fonts/' . get_current_blog_id() . '/';
+		$this->base_url   = rocket_get_constant( 'WP_ROCKET_CACHE_ROOT_URL', '' ) . 'fonts/' . get_current_blog_id() . '/';
+		$this->filesystem = $filesystem;
 	}
 
 	/**
@@ -104,6 +118,15 @@ protected function get_optimized_markup( string $hash, string $original_url ): s
 
 		$gf_parameters = wp_parse_url( $original_url, PHP_URL_QUERY );
 
+		$internal_styling = wpm_apply_filters_typed( 'boolean', 'rocket_internal_fonts_styling', false );
+		if ( $internal_styling ) {
+			$raw_path       = $this->base_path . $path . '.css';
+			$internal_style = $this->set_font_internal_style( $gf_parameters, $raw_path );
+			if ( $internal_style ) {
+				return $internal_style;
+			}
+		}
+
 		return sprintf(
 			'<link rel="stylesheet" href="%1$s" data-wpr-hosted-gf-parameters="%2$s"/>', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
 			$url,
@@ -125,4 +148,27 @@ public function disable_google_fonts_preload( $disable ): bool {
 
 		return true;
 	}
+
+	/**
+	 * Sets the font internal style.
+	 *
+	 * @param string $css_path CSS file path.
+	 *
+	 * @return string|bool
+	 */
+	private function set_font_internal_style( string $gf_parameters, string $css_path ) {
+		if ( ! $css_path ) {
+			return false;
+		}
+
+		if ( ! $this->filesystem->exists( $css_path ) ) {
+			return false;
+		}
+
+		return sprintf(
+			'<style data-wpr-hosted-gf-parameters="%1$s">%2$s</style>',
+			$gf_parameters,
+			$this->filesystem->get_contents( $css_path )
+		);
+	}
 }
diff --git a/inc/Engine/Media/Fonts/ServiceProvider.php b/inc/Engine/Media/Fonts/ServiceProvider.php
index 746ddf61f9..b979fca134 100644
--- a/inc/Engine/Media/Fonts/ServiceProvider.php
+++ b/inc/Engine/Media/Fonts/ServiceProvider.php
@@ -9,6 +9,7 @@
 use WP_Rocket\Engine\Media\Fonts\Context\Context;
 use WP_Rocket\Engine\Media\Fonts\Frontend\Controller as FrontendController;
 use WP_Rocket\Engine\Media\Fonts\Frontend\Subscriber as FrontendSubscriber;
+use WP_Filesystem_Direct;
 
 class ServiceProvider extends AbstractServiceProvider {
 	/**
@@ -46,6 +47,8 @@ public function provides( string $id ): bool {
 	 */
 	public function register(): void {
 		$this->getContainer()->add( 'media_fonts_settings', Settings::class );
+		$this->getContainer()->add( 'wp_direct_filesystem', WP_Filesystem_Direct::class )
+			->addArgument( [] );
 		$this->getContainer()->addShared( 'media_fonts_admin_subscriber', AdminSubscriber::class )
 			->addArgument( 'media_fonts_settings' );
 
@@ -55,6 +58,7 @@ public function register(): void {
 			->addArguments(
 				[
 					$this->getContainer()->get( 'media_fonts_context' ),
+					$this->getContainer()->get( 'wp_direct_filesystem' ),
 				]
 			);
 		$this->getContainer()->add( 'media_fonts_frontend_subscriber', FrontendSubscriber::class )