<?php
/**
* Class Google\Site_Kit\Modules\Analytics\Advanced_Tracking\Script_Injector
*
* @package Google\Site_Kit\Modules\Analytics
* @copyright 2021 Google LLC
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
* @link https://sitekit.withgoogle.com
*/
namespace Google\Site_Kit\Modules\Analytics\Advanced_Tracking;
use Google\Site_Kit\Context;
use Google\Site_Kit\Core\Assets\Manifest;
use Google\Site_Kit\Core\Util\BC_Functions;
/**
* Class for injecting JavaScript based on the registered event configurations.
*
* @since 1.18.0.
* @access private
* @ignore
*/
final class Script_Injector {
/**
* Plugin context.
*
* @since 1.18.0.
* @var Context
*/
protected $context;
/**
* Constructor.
*
* @since 1.18.0.
*
* @param Context $context Plugin context.
*/
public function __construct( Context $context ) {
$this->context = $context;
}
/**
* Creates list of measurement event configurations and javascript to inject.
*
* @since 1.18.0.
*
* @param array $events The map of Event objects, keyed by their unique ID.
*/
public function inject_event_script( $events ) {
if ( empty( $events ) ) {
return;
}
list( $filename ) = Manifest::get( 'analytics-advanced-tracking' );
if ( ! $filename ) {
// Get file contents of script and add it to the page, injecting event configurations into it.
$filename = 'analytics-advanced-tracking.js';
}
$script_path = $this->context->path( "dist/assets/js/{$filename}" );
// phpcs:ignore WordPress.WP.AlternativeFunctions, WordPressVIPMinimum.Performance.FetchingRemoteData
$script_content = file_get_contents( $script_path );
if ( ! $script_content ) {
return;
}
$data_var = sprintf(
'var _googlesitekitAnalyticsTrackingData = %s;',
wp_json_encode( array_values( $events ) )
);
BC_Functions::wp_print_inline_script_tag( $data_var . "\n" . $script_content );
}
}