Completed
Push — jetpack-fusion-mock-files ( e51750...3b1561 )
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13:31
created

Jetpack_Google_Analytics_Legacy::_get_url()   C

Complexity

Conditions 9
Paths 36

Size

Total Lines 22
Code Lines 14

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 9
eloc 14
nc 36
nop 1
dl 0
loc 22
rs 6.412
c 0
b 0
f 0
1
<?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( $track['data'], '?' ) === false ) ? '?' : '&amp;';
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		return str_replace( "'", "\'", "/{$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 ( is_search() ) {
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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( '&', '&amp;', $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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		$async_code = "<!-- Jetpack Google Analytics -->
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			<script type='text/javascript'>
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				var _gaq = _gaq || [];
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				%custom_vars%
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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>";
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		$custom_vars_string = implode( "\r\n", $custom_vars );
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		$async_code = str_replace( '%custom_vars%', $custom_vars_string, $async_code );
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		echo "$async_code\r\n";
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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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				"jQuery( function( $ ) {
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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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			);
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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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				"jQuery( function( $ ) {
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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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}
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