253 lines
8.4 KiB
PHP
253 lines
8.4 KiB
PHP
<?php
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/**
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* Jetpack_Google_Analytics_Legacy hooks and enqueues support for ga.js
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* https://developers.google.com/analytics/devguides/collection/gajs/
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*
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* @author Aaron D. Campbell (original)
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* @author allendav
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*/
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/**
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* Bail if accessed directly
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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class Jetpack_Google_Analytics_Legacy {
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public function __construct() {
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add_filter( 'jetpack_wga_classic_custom_vars', array( $this, 'jetpack_wga_classic_anonymize_ip' ) );
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add_filter( 'jetpack_wga_classic_custom_vars', array( $this, 'jetpack_wga_classic_track_purchases' ) );
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add_action( 'wp_footer', array( $this, 'insert_code' ) );
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add_action( 'wp_footer', array( $this, 'jetpack_wga_classic_track_add_to_cart' ) );
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}
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/**
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* Used to generate a tracking URL
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* Called exclusively by insert_code
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*
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* @param array $track - Must have ['data'] and ['code'].
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* @return string - Tracking URL
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*/
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private function _get_url( $track ) {
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$site_url = ( is_ssl() ? 'https://':'http://' ) . sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ); // Input var okay.
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foreach ( $track as $k => $value ) {
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if ( strpos( strtolower( $value ), strtolower( $site_url ) ) === 0 ) {
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$track[ $k ] = substr( $track[ $k ], strlen( $site_url ) );
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}
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if ( 'data' === $k ) {
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$track[ $k ] = preg_replace( '/^https?:\/\/|^\/+/i', '', $track[ $k ] );
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}
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// This way we don't lose search data.
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if ( 'data' === $k && 'search' === $track['code'] ) {
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$track[ $k ] = rawurlencode( $track[ $k ] );
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} else {
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$track[ $k ] = preg_replace( '/[^a-z0-9\.\/\+\?=-]+/i', '_', $track[ $k ] );
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}
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$track[ $k ] = trim( $track[ $k ], '_' );
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}
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$char = ( strpos( $track['data'], '?' ) === false ) ? '?' : '&';
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return str_replace( "'", "\'", "/{$track['code']}/{$track['data']}{$char}referer=" . rawurlencode( isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : '' ) ); // Input var okay.
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}
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/**
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* This injects the Google Analytics code into the footer of the page.
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* Called exclusively by wp_footer action
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*/
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public function insert_code() {
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$tracking_id = Jetpack_Google_Analytics_Options::get_tracking_code();
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if ( empty( $tracking_id ) ) {
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echo "<!-- Your Google Analytics Plugin is missing the tracking ID -->\r\n";
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return;
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}
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// If we're in the admin_area, return without inserting code.
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if ( is_admin() ) {
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return;
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}
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$custom_vars = array(
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"_gaq.push(['_setAccount', '{$tracking_id}']);",
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);
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$track = array();
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if ( is_404() ) {
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// This is a 404 and we are supposed to track them.
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$custom_vars[] = "_gaq.push(['_trackEvent', '404', document.location.href, document.referrer]);";
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} elseif (
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is_search()
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&& isset( $_REQUEST['s'] )
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) {
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// Set track for searches, if it's a search, and we are supposed to.
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$track['data'] = sanitize_text_field( wp_unslash( $_REQUEST['s'] ) ); // Input var okay.
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$track['code'] = 'search';
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}
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if ( ! empty( $track ) ) {
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$track['url'] = $this->_get_url( $track );
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// adjust the code that we output, account for both types of tracking.
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$track['url'] = esc_js( str_replace( '&', '&', $track['url'] ) );
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$custom_vars[] = "_gaq.push(['_trackPageview','{$track['url']}']);";
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} else {
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$custom_vars[] = "_gaq.push(['_trackPageview']);";
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}
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/**
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* Allow for additional elements to be added to the classic Google Analytics queue (_gaq) array
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*
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* @since 5.4.0
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*
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* @param array $custom_vars Array of classic Google Analytics queue elements
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*/
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$custom_vars = apply_filters( 'jetpack_wga_classic_custom_vars', $custom_vars );
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// Ref: https://developers.google.com/analytics/devguides/collection/gajs/gaTrackingEcommerce#Example
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printf(
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"<!-- Jetpack Google Analytics -->
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<script type='text/javascript'>
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var _gaq = _gaq || [];
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%s
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(function() {
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var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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ga.src = ('https:' === document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
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})();
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</script>\r\n",
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implode( "\r\n", $custom_vars )
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);
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}
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/**
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* Used to filter in the anonymize IP snippet to the custom vars array for classic analytics
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* Ref https://developers.google.com/analytics/devguides/collection/gajs/methods/gaJSApi_gat#_gat._anonymizelp
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* @param array custom vars to be filtered
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* @return array possibly updated custom vars
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*/
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public function jetpack_wga_classic_anonymize_ip( $custom_vars ) {
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if ( Jetpack_Google_Analytics_Options::anonymize_ip_is_enabled() ) {
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array_push( $custom_vars, "_gaq.push(['_gat._anonymizeIp']);" );
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}
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return $custom_vars;
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}
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/**
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* Used to filter in the order details to the custom vars array for classic analytics
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* @param array custom vars to be filtered
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* @return array possibly updated custom vars
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*/
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public function jetpack_wga_classic_track_purchases( $custom_vars ) {
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global $wp;
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if ( ! class_exists( 'WooCommerce' ) ) {
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return $custom_vars;
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}
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if ( ! Jetpack_Google_Analytics_Options::has_tracking_code() ) {
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return;
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}
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// Ref: https://developers.google.com/analytics/devguides/collection/gajs/gaTrackingEcommerce#Example
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if ( ! Jetpack_Google_Analytics_Options::track_purchases_is_enabled() ) {
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return $custom_vars;
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}
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$minimum_woocommerce_active = class_exists( 'WooCommerce' ) && version_compare( WC_VERSION, '3.0', '>=' );
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if ( $minimum_woocommerce_active && is_order_received_page() ) {
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$order_id = isset( $wp->query_vars['order-received'] ) ? $wp->query_vars['order-received'] : 0;
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if ( 0 < $order_id && 1 != get_post_meta( $order_id, '_ga_tracked', true ) ) {
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$order = new WC_Order( $order_id );
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// [ '_add_Trans', '123', 'Site Title', '21.00', '1.00', '5.00', 'Snohomish', 'WA', 'USA' ]
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array_push(
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$custom_vars,
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sprintf(
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'_gaq.push( %s );', json_encode(
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array(
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'_addTrans',
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(string) $order->get_order_number(),
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get_bloginfo( 'name' ),
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(string) $order->get_total(),
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(string) $order->get_total_tax(),
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(string) $order->get_total_shipping(),
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(string) $order->get_billing_city(),
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(string) $order->get_billing_state(),
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(string) $order->get_billing_country()
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)
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)
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)
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);
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// Order items
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if ( $order->get_items() ) {
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foreach ( $order->get_items() as $item ) {
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$product = $order->get_product_from_item( $item );
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$product_sku_or_id = $product->get_sku() ? $product->get_sku() : $product->get_id();
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array_push(
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$custom_vars,
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sprintf(
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'_gaq.push( %s );', json_encode(
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array(
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'_addItem',
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(string) $order->get_order_number(),
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(string) $product_sku_or_id,
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$item['name'],
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Jetpack_Google_Analytics_Utils::get_product_categories_concatenated( $product ),
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(string) $order->get_item_total( $item ),
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(string) $item['qty']
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)
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)
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)
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);
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}
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} // get_items
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// Mark the order as tracked
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update_post_meta( $order_id, '_ga_tracked', 1 );
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array_push( $custom_vars, "_gaq.push(['_trackTrans']);" );
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} // order not yet tracked
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} // is order received page
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return $custom_vars;
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}
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/**
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* Used to add footer javascript to track user clicking on add-to-cart buttons
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* on single views (.single_add_to_cart_button) and list views (.add_to_cart_button)
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*/
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public function jetpack_wga_classic_track_add_to_cart() {
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if ( ! class_exists( 'WooCommerce' ) ) {
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return;
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}
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if ( ! Jetpack_Google_Analytics_Options::has_tracking_code() ) {
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return;
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}
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if ( ! Jetpack_Google_Analytics_Options::track_add_to_cart_is_enabled() ) {
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return;
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}
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if ( is_product() ) { // product page
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global $product;
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$product_sku_or_id = $product->get_sku() ? $product->get_sku() : "#" + $product->get_id();
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wc_enqueue_js(
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"$( '.single_add_to_cart_button' ).click( function() {
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_gaq.push(['_trackEvent', 'Products', 'Add to Cart', '#" . esc_js( $product_sku_or_id ) . "']);
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} );"
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);
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} else if ( is_woocommerce() ) { // any other page that uses templates (like product lists, archives, etc)
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wc_enqueue_js(
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"$( '.add_to_cart_button:not(.product_type_variable, .product_type_grouped)' ).click( function() {
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var label = $( this ).data( 'product_sku' ) ? $( this ).data( 'product_sku' ) : '#' + $( this ).data( 'product_id' );
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_gaq.push(['_trackEvent', 'Products', 'Add to Cart', label]);
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} );"
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);
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}
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}
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}
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