Cache the script settings

readme.txt

@@ -95,6 +95,7 @@ Release date: 2024-MM-DD
 Find out about what's new in our [our release post](https://gtmkit.com/gtm-kit-1-19/).
 
 #### Enhancements:
+* The script settings are the same on all pages and are now cached in the object cache for better performance.
 
 #### Bugfixes:
 

src/Admin/AbstractOptionsPage.php

@@ -39,6 +39,10 @@ public static function register(): void {
 		add_action( 'admin_enqueue_scripts', [ $page, 'enqueue_page_assets' ] );
 
 		add_filter( 'admin_body_class', [ $page, 'admin_body_class' ] );
+
+		add_filter( 'activated_plugin', [ $page, 'clear_script_settings_cache' ] );
+		add_filter( 'deactivated_plugin', [ $page, 'clear_script_settings_cache' ] );
+		add_filter( 'switch_theme', [ $page, 'clear_script_settings_cache' ] );
 	}
 
 	/**
@@ -245,4 +249,13 @@ class="gtmkit-bg-color-primary gtmkit-text-white gtmkit-rounded-md gtmkit-py-4 g
 		</div>
 		<?php
 	}
+
+	/**
+	 * Clear the script settings cache.
+	 *
+	 * @return void
+	 */
+	public function clear_script_settings_cache(): void {
+		wp_cache_delete( 'gtmkit_script_settings', 'gtmkit' );
+	}
 }

src/Frontend/Frontend.php

@@ -74,14 +74,23 @@ public static function register( Options $options ): void {
 	 * The inline script for settings and data use by other GTM Kit scripts.
 	 */
 	public function enqueue_settings_and_data_script(): void {
-		$settings = [
-			'datalayer_name' => $this->datalayer_name,
-			'console_log'    => $this->options->get( 'general', 'console_log' ),
-		];
+		$settings = wp_cache_get( 'gtmkit_script_settings', 'gtmkit' );
+		if ( ! $settings ) {
+
+			$settings = apply_filters(
+				'gtmkit_header_script_settings',
+				[
+					'datalayer_name' => $this->datalayer_name,
+					'console_log'    => $this->options->get( 'general', 'console_log' ),
+				]
+			);
+
+			wp_cache_set( 'gtmkit_script_settings', $settings, 'gtmkit' );
+		}
 
 		ob_start();
 		?>
-		window.gtmkit_settings = <?php echo wp_json_encode( apply_filters( 'gtmkit_header_script_settings', $settings ), JSON_FORCE_OBJECT ); ?>;
+		window.gtmkit_settings = <?php echo wp_json_encode( $settings, JSON_FORCE_OBJECT ); ?>;
 		window.gtmkit_data = <?php echo wp_json_encode( apply_filters( 'gtmkit_header_script_data', [] ), JSON_FORCE_OBJECT ); ?>;
 		window.<?php echo esc_js( $this->datalayer_name ); ?> = window.<?php echo esc_js( $this->datalayer_name ); ?> || [];
 		<?php if ( $this->options->get( 'general', 'gcm_default_settings' ) ) : ?>

src/Options.php

@@ -248,6 +248,7 @@ public function set( array $options, bool $first_install = false, bool $overwrit
 
 		// Now we need to re-cache values.
 		wp_cache_delete( self::OPTION_NAME, 'options' );
+		wp_cache_delete( 'gtmkit_script_settings', 'gtmkit' );
 		$this->options = get_option( self::OPTION_NAME, [] );
 	}