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<?php |
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/* |
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Copyright 2006 Aaron D. Campbell (email : [email protected]) |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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/** |
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* Jetpack_Google_Analytics is the class that handles ALL of the plugin functionality. |
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* It helps us avoid name collisions |
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* https://codex.wordpress.org/Writing_a_Plugin#Avoiding_Function_Name_Collisions |
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*/ |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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require_once( plugin_basename( 'classes/wp-google-analytics-utils.php' ) ); |
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require_once( plugin_basename( 'classes/wp-google-analytics-options.php' ) ); |
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require_once( plugin_basename( 'classes/wp-google-analytics-legacy.php' ) ); |
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require_once( plugin_basename( 'classes/wp-google-analytics-universal.php' ) ); |
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class Jetpack_Google_Analytics { |
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/** |
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* @var Jetpack_Google_Analytics - Static property to hold our singleton instance |
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*/ |
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static $instance = false; |
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/** |
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* @var Static property to hold concrete analytics impl that does the work (universal or legacy) |
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*/ |
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static $analytics = false; |
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/** |
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* This is our constructor, which is private to force the use of get_instance() |
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* |
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* @return void |
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*/ |
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private function __construct() { |
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// At this time, we only leverage universal analytics when enhanced ecommerce is selected and WooCommerce is active. |
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// Otherwise, don't bother emitting the tracking ID or fetching analytics.js |
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if ( class_exists( 'WooCommerce' ) && Jetpack_Google_Analytics_Options::enhanced_ecommerce_tracking_is_enabled() ) { |
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$analytics = new Jetpack_Google_Analytics_Universal(); |
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} else { |
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$analytics = new Jetpack_Google_Analytics_Legacy(); |
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} |
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} |
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/** |
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* Function to instantiate our class and make it a singleton |
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*/ |
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public static function get_instance() { |
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if ( ! self::$instance ) { |
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self::$instance = new self; |
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} |
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return self::$instance; |
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} |
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/** |
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* Add amp-analytics tags. |
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* |
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* @param array $analytics_entries An associative array of the analytics entries. |
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* |
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* @return array |
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*/ |
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public static function amp_analytics_entries( $analytics_entries ) { |
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if ( ! is_array( $analytics_entries ) ) { |
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$analytics_entries = array(); |
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} |
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$amp_tracking_codes = static::get_amp_tracking_codes( $analytics_entries ); |
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$jetpack_account = Jetpack_Google_Analytics_Options::get_tracking_code(); |
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// Bypass tracking codes already set on AMP plugin. |
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if ( in_array( $jetpack_account, $amp_tracking_codes, true ) ) { |
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return $analytics_entries; |
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} |
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$config_data = wp_json_encode( |
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array( |
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'vars' => array( |
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'account' => Jetpack_Google_Analytics_Options::get_tracking_code(), |
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), |
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'triggers' => array( |
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'trackPageview' => array( |
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'on' => 'visible', |
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'request' => 'pageview', |
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), |
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), |
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) |
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); |
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// Generate a hash string to uniquely identify this entry. |
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$entry_id = substr( md5( 'googleanalytics' . $config_data ), 0, 12 ); |
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$analytics_entries[ $entry_id ] = array( |
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'type' => 'googleanalytics', |
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'config' => $config_data, |
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); |
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return $analytics_entries; |
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} |
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/** |
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* Get AMP tracking codes. |
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* |
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* @param array $analytics_entries The codes available for AMP. |
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* |
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* @return array |
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*/ |
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protected static function get_amp_tracking_codes( $analytics_entries ) { |
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$entries = array_column( $analytics_entries, 'config' ); |
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$accounts = array(); |
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foreach ( $entries as $entry ) { |
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$entry = json_decode( $entry ); |
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if ( ! empty( $entry->vars->account ) ) { |
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$accounts[] = $entry->vars->account; |
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} |
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} |
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return $accounts; |
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} |
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} |
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global $jetpack_google_analytics; |
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$jetpack_google_analytics = Jetpack_Google_Analytics::get_instance(); |
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Automattic /
jetpack
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Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.