From 896f8cf5a8b993dd409469af249a70fdc97c0467 Mon Sep 17 00:00:00 2001
From: Marin Atanasov <tyxla@abv.bg>
Date: Tue, 13 Jun 2023 14:12:06 +0300
Subject: [PATCH] Use a query argument instead of a cookie

---
 lib/client-assets.php                    | 2 +-
 lib/experimental/assets/tinymce-proxy.js | 6 +++---
 lib/experimental/disable-tinymce.php     | 4 ++--
 packages/block-library/src/index.js      | 9 ++++-----
 4 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/lib/client-assets.php b/lib/client-assets.php
index 380d116f64805c..b9e385be5eb876 100644
--- a/lib/client-assets.php
+++ b/lib/client-assets.php
@@ -205,7 +205,7 @@ function gutenberg_register_packages_scripts( $scripts ) {
 			case 'wp-block-library':
 				if (
 					! gutenberg_is_experiment_enabled( 'gutenberg-no-tinymce' ) ||
-					isset( $_COOKIE['requiresTinymce'] ) ||
+					! empty( $_GET['requiresTinymce'] ) ||
 					gutenberg_current_content_contains_classic_block()
 				) {
 					array_push( $dependencies, 'editor' );
diff --git a/lib/experimental/assets/tinymce-proxy.js b/lib/experimental/assets/tinymce-proxy.js
index e8044b8abafd6c..f66ab6b435c931 100644
--- a/lib/experimental/assets/tinymce-proxy.js
+++ b/lib/experimental/assets/tinymce-proxy.js
@@ -1,7 +1,7 @@
 async function markAsRequiringTinymce() {
-	const expiration = new Date( 'Dec 31, 2099 23:59:59' );
-	document.cookie = `requiresTinymce=1; expires=${ expiration }; path=/`;
-	window.location.reload();
+	const currentUrl = new URL( window.location.href );
+	currentUrl.searchParams.set( 'requiresTinymce', '1' );
+	window.location.href = currentUrl;
 }
 
 window.tinymce = new Proxy(
diff --git a/lib/experimental/disable-tinymce.php b/lib/experimental/disable-tinymce.php
index 45f684fdca71d7..428d97371e505f 100644
--- a/lib/experimental/disable-tinymce.php
+++ b/lib/experimental/disable-tinymce.php
@@ -19,7 +19,7 @@ function gutenberg_declare_classic_block_necessary() {
 add_action( 'admin_footer', 'gutenberg_declare_classic_block_necessary' );
 
 // If user has already requested TinyMCE, we're ending the experiment.
-if ( isset( $_COOKIE['requiresTinymce'] ) || gutenberg_current_content_contains_classic_block() ) {
+if ( ! empty( $_GET['requiresTinymce'] ) || gutenberg_current_content_contains_classic_block() ) {
 	return;
 }
 
@@ -35,7 +35,7 @@ function gutenberg_disable_tinymce() {
 
 /**
  * Enqueue TinyMCE proxy script.
- * Detects TinyMCE usage and sets the `requiresTinymce` cookie to stop disabling TinyMCE loading.
+ * Detects TinyMCE usage and sets the `requiresTinymce` query argument to stop disabling TinyMCE loading.
  */
 function gutenberg_enqueue_tinymce_proxy() {
 	wp_enqueue_script( 'gutenberg-tinymce-proxy', plugins_url( 'assets/tinymce-proxy.js', __FILE__ ) );
diff --git a/packages/block-library/src/index.js b/packages/block-library/src/index.js
index b16071a549560c..6361ed020566b1 100644
--- a/packages/block-library/src/index.js
+++ b/packages/block-library/src/index.js
@@ -231,15 +231,14 @@ const getAllBlocks = () => {
 	// and when either of the following is true:
 	// - TinyMCE experiment is disabled;
 	// - there is a classic block in the current post's content;
-	// - the cookie to require TinyMCE is set.
+	// - the query argument to require TinyMCE is set.
 	if (
 		window?.wp?.oldEditor &&
 		( window?.wp?.needsClassicBlock ||
 			! window?.__experimentalDisableTinymce ||
-			( '; ' + document.cookie )
-				.split( '; requiresTinymce=' )
-				.pop()
-				.split( ';' )[ 0 ] )
+			!! new URLSearchParams( window?.location?.search ).get(
+				'requiresTinymce'
+			) )
 	) {
 		blocks.push( classic );
 	}