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GlobalSiteTag.php
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GlobalSiteTag.php
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<?php
declare( strict_types=1 );
/**
* Global Site Tag functionality - add main script and track conversions.
*
* @package Automattic\WooCommerce\GoogleListingsAndAds
*/
namespace Automattic\WooCommerce\GoogleListingsAndAds\Google;
use Automattic\WooCommerce\GoogleListingsAndAds\Assets\AssetsHandlerInterface;
use Automattic\WooCommerce\GoogleListingsAndAds\Assets\ScriptWithBuiltDependenciesAsset;
use Automattic\WooCommerce\GoogleListingsAndAds\Infrastructure\Conditional;
use Automattic\WooCommerce\GoogleListingsAndAds\Infrastructure\Registerable;
use Automattic\WooCommerce\GoogleListingsAndAds\Infrastructure\Service;
use Automattic\WooCommerce\GoogleListingsAndAds\Options\OptionsAwareInterface;
use Automattic\WooCommerce\GoogleListingsAndAds\Options\OptionsAwareTrait;
use Automattic\WooCommerce\GoogleListingsAndAds\Options\OptionsInterface;
use Automattic\WooCommerce\GoogleListingsAndAds\Product\ProductHelper;
use Automattic\WooCommerce\GoogleListingsAndAds\PluginHelper;
use Automattic\WooCommerce\GoogleListingsAndAds\Proxies\GoogleGtagJs;
use Automattic\WooCommerce\GoogleListingsAndAds\Proxies\WC;
use Automattic\WooCommerce\GoogleListingsAndAds\Proxies\WP;
use Automattic\WooCommerce\GoogleListingsAndAds\Value\BuiltScriptDependencyArray;
use WC_Product;
defined( 'ABSPATH' ) || exit;
/**
* Main class for Global Site Tag.
*/
class GlobalSiteTag implements Service, Registerable, Conditional, OptionsAwareInterface {
use OptionsAwareTrait;
use PluginHelper;
/** @var string Developer ID */
protected const DEVELOPER_ID = 'dOGY3NW';
/** @var string Meta key used to mark orders as converted */
protected const ORDER_CONVERSION_META_KEY = '_gla_tracked';
/**
* @var AssetsHandlerInterface
*/
protected $assets_handler;
/**
* @var GoogleGtagJs
*/
protected $gtag_js;
/**
* @var ProductHelper
*/
protected $product_helper;
/**
* @var WC
*/
protected $wc;
/**
* @var WP
*/
protected $wp;
/**
* Additional product data used for tracking add_to_cart events.
*
* @var array
*/
protected $products = [];
/**
* Global Site Tag constructor.
*
* @param AssetsHandlerInterface $assets_handler
* @param GoogleGtagJs $gtag_js
* @param ProductHelper $product_helper
* @param WC $wc
* @param WP $wp
*/
public function __construct(
AssetsHandlerInterface $assets_handler,
GoogleGtagJs $gtag_js,
ProductHelper $product_helper,
WC $wc,
WP $wp
) {
$this->assets_handler = $assets_handler;
$this->gtag_js = $gtag_js;
$this->product_helper = $product_helper;
$this->wc = $wc;
$this->wp = $wp;
}
/**
* Register the service.
*/
public function register(): void {
$conversion_action = $this->options->get( OptionsInterface::ADS_CONVERSION_ACTION );
// No snippets without conversion action info.
if ( ! $conversion_action ) {
return;
}
$ads_conversion_id = $conversion_action['conversion_id'];
$ads_conversion_label = $conversion_action['conversion_label'];
add_action(
'wp_head',
function () use ( $ads_conversion_id ) {
$this->activate_global_site_tag( $ads_conversion_id );
},
999999
);
add_action(
'woocommerce_before_thankyou',
function ( $order_id ) use ( $ads_conversion_id, $ads_conversion_label ) {
$this->maybe_display_conversion_and_purchase_event_snippets( $ads_conversion_id, $ads_conversion_label, $order_id );
},
);
add_action(
'woocommerce_after_single_product',
function () {
$this->display_view_item_event_snippet();
}
);
add_action(
'wp_body_open',
function () {
$this->display_page_view_event_snippet();
}
);
$this->product_data_hooks();
$this->register_assets();
}
/**
* Attach filters to add product data required for tracking events.
*/
protected function product_data_hooks() {
// Add product data for any add_to_cart link.
add_filter(
'woocommerce_loop_add_to_cart_link',
function ( $link, $product ) {
$this->add_product_data( $product );
return $link;
},
10,
2
);
// Add display name for an available variation.
add_filter(
'woocommerce_available_variation',
function ( $data, $instance, $variation ) {
$data['display_name'] = $variation->get_name();
return $data;
},
10,
3
);
}
/**
* Register and enqueue assets for gtag events in blocks.
*/
protected function register_assets() {
$gtag_events = new ScriptWithBuiltDependenciesAsset(
'gla-gtag-events',
'js/build/gtag-events',
"{$this->get_root_dir()}/js/build/gtag-events.asset.php",
new BuiltScriptDependencyArray(
[
'dependencies' => [],
'version' => $this->get_version(),
]
),
function () {
return is_page() || is_woocommerce() || is_cart();
}
);
$this->assets_handler->register( $gtag_events );
add_action(
'wp_footer',
function () use ( $gtag_events ) {
$gtag_events->add_localization(
'glaGtagData',
[
'currency_minor_unit' => wc_get_price_decimals(),
'products' => $this->products,
]
);
$this->register_js_for_fast_refresh_dev();
$this->assets_handler->enqueue( $gtag_events );
}
);
}
/**
* Activate the Global Site Tag framework:
* - Insert GST code, or
* - Include the Google Ads conversion ID in WooCommerce Google Analytics for WooCommerce output, if available
*
* @param string $ads_conversion_id Google Ads account conversion ID.
*/
public function activate_global_site_tag( string $ads_conversion_id ) {
if ( $this->gtag_js->is_adding_framework() ) {
if ( $this->gtag_js->ga4w_v2 ) {
wp_add_inline_script(
'woocommerce-google-analytics-integration',
$this->get_gtag_config( $ads_conversion_id )
);
} else {
// Legacy code to support Google Analytics for WooCommerce version < 2.0.0.
add_filter(
'woocommerce_gtag_snippet',
function ( $gtag_snippet ) use ( $ads_conversion_id ) {
return preg_replace(
'~(\s)</script>~',
"\tgtag('config', '" . $ads_conversion_id . "', { 'groups': 'GLA', 'send_page_view': false });\n$1</script>",
$gtag_snippet
);
}
);
}
} else {
$this->display_global_site_tag( $ads_conversion_id );
}
}
/**
* Display the JavaScript code to load the Global Site Tag framework.
*
* @param string $ads_conversion_id Google Ads account conversion ID.
*/
protected function display_global_site_tag( string $ads_conversion_id ) {
// phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedScript
?>
<!-- Global site tag (gtag.js) - Google Ads: <?php echo esc_js( $ads_conversion_id ); ?> - Google Listings & Ads -->
<script async src="https://www.googletagmanager.com/gtag/js?id=<?php echo esc_js( $ads_conversion_id ); ?>"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() { dataLayer.push(arguments); }
<?php
// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo $this->get_consent_mode_config();
?>
gtag('js', new Date());
gtag('set', 'developer_id.<?php echo esc_js( self::DEVELOPER_ID ); ?>', true);
<?php
// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo $this->get_gtag_config( $ads_conversion_id );
?>
</script>
<?php
// phpcs:enable WordPress.WP.EnqueuedResources.NonEnqueuedScript
}
/**
* Get the ads conversion configuration for the Global Site Tag
*
* @param string $ads_conversion_id Google Ads account conversion ID.
*/
protected function get_gtag_config( string $ads_conversion_id ) {
return sprintf(
'gtag("config", "%1$s", { "groups": "GLA", "send_page_view": false });',
esc_js( $ads_conversion_id )
);
}
/**
* Get the default consent mode configuration.
*/
protected function get_consent_mode_config() {
$consent_mode_snippet = "gtag( 'consent', 'default', {
analytics_storage: 'denied',
ad_storage: 'denied',
ad_user_data: 'denied',
ad_personalization: 'denied',
region: ['AT', 'BE', 'BG', 'HR', 'CY', 'CZ', 'DK', 'EE', 'FI', 'FR', 'DE', 'GR', 'HU', 'IS', 'IE', 'IT', 'LV', 'LI', 'LT', 'LU', 'MT', 'NL', 'NO', 'PL', 'PT', 'RO', 'SK', 'SI', 'ES', 'SE', 'GB', 'CH'],
} );";
/**
* Filters the default gtag consent mode configuration.
*
* @param string $consent_mode_snippet Default configuration with all the parameters `denied` for the EEA region.
*/
return apply_filters( 'woocommerce_gla_gtag_consent', $consent_mode_snippet );
}
/**
* Add inline JavaScript to the page either as a standalone script or
* attach it to Google Analytics for WooCommerce if it's installed
*
* @param string $inline_script The JavaScript code to display
*
* @return void
*/
public function add_inline_event_script( string $inline_script ) {
if ( class_exists( '\WC_Google_Gtag_JS' ) ) {
wp_add_inline_script(
'woocommerce-google-analytics-integration',
$inline_script
);
} else {
wp_print_inline_script_tag( $inline_script );
}
}
/**
* Display the JavaScript code to track conversions on the order confirmation page.
*
* @param string $ads_conversion_id Google Ads account conversion ID.
* @param string $ads_conversion_label Google Ads conversion label.
* @param int $order_id The order id.
*/
public function maybe_display_conversion_and_purchase_event_snippets( string $ads_conversion_id, string $ads_conversion_label, int $order_id ): void {
// Only display on the order confirmation page.
if ( ! is_order_received_page() ) {
return;
}
$order = wc_get_order( $order_id );
// Make sure there is a valid order object and it is not already marked as tracked
if ( ! $order || 1 === $order->get_meta( self::ORDER_CONVERSION_META_KEY, true ) ) {
return;
}
// Mark the order as tracked, to avoid double-reporting if the confirmation page is reloaded.
$order->update_meta_data( self::ORDER_CONVERSION_META_KEY, 1 );
$order->save_meta_data();
$conversion_gtag_info =
sprintf(
'gtag("event", "conversion", {
send_to: "%s",
value: %f,
currency: "%s",
transaction_id: "%s"});',
esc_js( "{$ads_conversion_id}/{$ads_conversion_label}" ),
$order->get_total(),
esc_js( $order->get_currency() ),
esc_js( $order->get_id() ),
);
$this->add_inline_event_script( $conversion_gtag_info );
// Get the item info in the order
$item_info = [];
foreach ( $order->get_items() as $item_id => $item ) {
$product_id = $item->get_product_id();
$product_name = $item->get_name();
$quantity = $item->get_quantity();
$price = $order->get_item_total( $item );
$item_info [] = sprintf(
'{
id: "gla_%s",
price: %f,
google_business_vertical: "retail",
name: "%s",
quantity: %d,
}',
esc_js( $product_id ),
$price,
esc_js( $product_name ),
$quantity,
);
}
// Check if this is the first time customer
$is_new_customer = $this->is_first_time_customer( $order->get_billing_email() );
// Track the purchase page
$language = $this->wp->get_locale();
if ( 'en_US' === $language ) {
$language = 'English';
}
$purchase_page_gtag =
sprintf(
'gtag("event", "purchase", {
ecomm_pagetype: "purchase",
send_to: "%s",
transaction_id: "%s",
currency: "%s",
country: "%s",
value: %f,
new_customer: %s,
tax: %f,
shipping: %f,
delivery_postal_code: "%s",
aw_feed_country: "%s",
aw_feed_language: "%s",
items: [%s]});',
esc_js( "{$ads_conversion_id}/{$ads_conversion_label}" ),
esc_js( $order->get_id() ),
esc_js( $order->get_currency() ),
esc_js( $this->wc->get_base_country() ),
$order->get_total(),
$is_new_customer ? 'true' : 'false',
esc_js( $order->get_cart_tax() ),
$order->get_total_shipping(),
esc_js( $order->get_billing_postcode() ),
esc_js( $this->wc->get_base_country() ),
esc_js( $language ),
join( ',', $item_info ),
);
$this->add_inline_event_script( $purchase_page_gtag );
}
/**
* Display the JavaScript code to track the product view page.
*/
private function display_view_item_event_snippet(): void {
$product = wc_get_product( get_the_ID() );
if ( ! $product instanceof WC_Product ) {
return;
}
$this->add_product_data( $product );
$view_item_gtag = sprintf(
'gtag("event", "view_item", {
send_to: "GLA",
ecomm_pagetype: "product",
value: %f,
items:[{
id: "gla_%s",
price: %f,
google_business_vertical: "retail",
name: "%s",
category: "%s",
}]});',
wc_get_price_to_display( $product ),
esc_js( $product->get_id() ),
wc_get_price_to_display( $product ),
esc_js( $product->get_name() ),
esc_js( join( ' & ', $this->product_helper->get_categories( $product ) ) ),
);
$this->add_inline_event_script( $view_item_gtag );
}
/**
* Display the JavaScript code to track all pages.
*/
private function display_page_view_event_snippet(): void {
if ( ! is_cart() ) {
$this->add_inline_event_script(
'gtag("event", "page_view", {send_to: "GLA"});'
);
return;
}
// display the JavaScript code to track the cart page
$item_info = [];
foreach ( WC()->cart->get_cart() as $cart_item ) {
// gets the product id
$id = $cart_item['product_id'];
// gets the product object
$product = $cart_item['data'];
$name = $product->get_name();
$price = WC()->cart->display_prices_including_tax() ? wc_get_price_including_tax( $product ) : wc_get_price_excluding_tax( $product );
// gets the cart item quantity
$quantity = $cart_item['quantity'];
$item_info[] = sprintf(
'{
id: "gla_%s",
price: %f,
google_business_vertical: "retail",
name:"%s",
quantity: %d,
}',
esc_js( $id ),
$price,
esc_js( $name ),
$quantity,
);
}
$value = WC()->cart->total;
$page_view_gtag = sprintf(
'gtag("event", "page_view", {
send_to: "GLA",
ecomm_pagetype: "cart",
value: %f,
items: [%s]});',
$value,
join( ',', $item_info ),
);
$this->add_inline_event_script( $page_view_gtag );
}
/**
* Add product data to include in JS data.
*
* @since 2.0.3
*
* @param WC_Product $product
*/
protected function add_product_data( $product ) {
$this->products[ $product->get_id() ] = [
'name' => $product->get_name(),
'price' => wc_get_price_to_display( $product ),
];
}
/**
* TODO: Should the Global Site Tag framework be used if there are no paid Ads campaigns?
*
* @return bool True if the Global Site Tag framework should be included.
*/
public static function is_needed(): bool {
if ( apply_filters( 'woocommerce_gla_disable_gtag_tracking', false ) ) {
return false;
}
return true;
}
/**
* Check if the customer has previous orders.
* Called after order creation (check for older orders including the order which was just created).
*
* @param string $customer_email Customer email address.
* @return bool True if this customer has previous orders.
*/
private static function is_first_time_customer( $customer_email ): bool {
$query = new \WC_Order_Query(
[
'limit' => 2,
'return' => 'ids',
]
);
$query->set( 'customer', $customer_email );
$orders = $query->get_orders();
return count( $orders ) === 1 ? true : false;
}
/**
* This method ONLY works during development in the Fast Refresh mode.
*
* The runtime.js and react-refresh-runtime.js files are created when the front-end development is
* running `npm run start:hot`, and they need to be loaded to make the gtag-events scrips work.
*/
private function register_js_for_fast_refresh_dev() {
// This file exists only when running `npm run start:hot`
$runtime_path = "{$this->get_root_dir()}/js/build/runtime.js";
if ( ! file_exists( $runtime_path ) ) {
return;
}
$plugin_url = $this->get_plugin_url();
wp_enqueue_script(
'gla-webpack-runtime',
"{$plugin_url}/js/build/runtime.js",
[],
(string) filemtime( $runtime_path ),
false
);
// This script is one of the gtag-events dependencies, and its handle is wp-react-refresh-runtime.
// Ref: js/build/gtag-events.asset.php
wp_register_script(
'wp-react-refresh-runtime',
"{$plugin_url}/js/build-dev/react-refresh-runtime.js",
[ 'gla-webpack-runtime' ],
$this->get_version(),
false
);
}
}