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✏️ Editing: google-analytics.class.php

<?php

/**
 *
 * Google Analytics class for WP eCommerce.
 *
 * No longer dependent upon Google Analytics for WordPress, we have a great internal analytics class that actually works now.
 *
 * @since 3.8.9
 * @package wp-e-commerce
 */
class WPSC_Google_Analytics {

private $is_analytics_disabled = false;
	private $is_theme_tracking     = false;
	private $advanced_code         = false;
	private $tracking_id           = '';

public function __construct() {
		$this->is_theme_tracking     = (bool) get_option( 'wpsc_ga_currently_tracking' );
		$this->advanced_code         = (bool) get_option( 'wpsc_ga_advanced' );
		$this->tracking_id           = esc_attr( get_option( 'wpsc_ga_tracking_id' ) );
		$this->is_analytics_disabled =
			   (bool) get_option( 'wpsc_ga_disable_tracking' )
			|| ( ! $this->is_theme_tracking && empty( $this->tracking_id ) );

// TODO: make it work with new theme engine as well
		if ( ! $this->is_analytics_disabled ) {
			add_action( 'wpsc_transaction_results_shutdown', array( $this, 'print_script' ), 10, 3 );
		}
	}

/**
	 * Sanitizes strings for Google Analytics.
	 * Gratefully borrowed and modified from Google Analytics for WordPress
	 *
	 * @param string $string
	 * @since 3.8.9
	 * @return string
	 */
	public function sanitize( $string ) {
		return remove_accents( str_replace( '---', '-', str_replace( ' ', '-', strtolower( html_entity_decode( $string, ENT_QUOTES, get_option( 'blog_charset' ) ) ) ) ) );
	}

/**
	 * Builds out the proper script for tracking.
	 *
	 * Checks options to ensure we're actually supposed to be building the script, and which part of the script to build.
	 * If analytics are disabled, we build nothing.
	 * If the site already is tracking OR using the advanced option, we insert only the e-commerce portion, not the initial tracking info.
	 *
	 * @param $purchase_log      Purchase Log object
	 * @param $session_id        Session ID
	 * @param $display_to_screen Whether or not the output is displayed to the screen
	 *
	 * @since 3.8.9
	 * @return javascript
	 */
	public function print_script( $purchase_log, $session_id, $display_to_screen ) {

if ( ! $display_to_screen ) {
			return false;
		}

$output = '';

if ( $this->is_analytics_disabled )
			return $output;

if ( ! $this->is_theme_tracking && ! $this->advanced_code ) {
			$output .= $this->general_init();
		}

$output .= $this->add_pushes( $session_id );

if ( ! $this->is_theme_tracking && ! $this->advanced_code ) {
			$output .= $this->general_shutdown();
		}

echo $output;
	}

public function general_init() {

if ( $this->use_universal_analytics() ) {

return "<script>\n\r
				(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){\n\r
				(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),\n\r
				m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)\n\r
				})(window,document,'script','//www.google-analytics.com/analytics.js','ga');\n\r

ga('create', '" . $this->tracking_id ."', { 'cookieDomain' : '" . $this->get_domain_name() . "' });\n\r
				ga('send', 'pageview');\n\r";

} else {

return "<script type='text/javascript'>\n\r
				var _gaq = _gaq || [];\n\r
				_gaq.push(['_setAccount', '" . $this->tracking_id ."']);\n\r
				_gaq.push(['_setDomainName', '" . $this->get_domain_name() . "']);\n\r
				_gaq.push(['_trackPageview']);\n\r";

}

public function general_shutdown() {

if ( ! $this->use_universal_analytics() ) {

return "(function() {\n\r
				var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;\n\r
				ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';\n\r
				var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);\n\r
				})();</script>\n\r";

}

return "</script>\n\r";

}

public function get_domain_name() {

$site_url = $this->sanitize( str_replace( array( 'https://www.', 'http://www.', 'https://', 'http://',  ), '', untrailingslashit( network_home_url() ) ) );

return apply_filters( 'wpsc_google_analytics_domain_name', $site_url );
	}

public function get_site_name() {

$site_name = $this->sanitize( get_bloginfo( 'name' ) );

return apply_filters( 'wpsc_google_analytics_site_name', $site_name );
	}

public function use_universal_analytics() {

return '1' == get_option( 'wpsc_ga_use_universal' );

}

public function remove_currency_and_html( $args ) {

$args['display_currency_symbol'] = false;
		$args['display_as_html']         = false;

return $args;

}
	public function add_pushes( $session_id ) {

$purchase    = new WPSC_Purchase_Log( $session_id, 'sessionid' );
		$purchase_id = $purchase->get( 'id' );

$data = new WPSC_Checkout_Form_Data( $purchase_id );

$output      = '';

$city    = $data->get( 'billingcity' );
		$state   = $data->get( 'billingstate' );
		$country = $data->get( 'billingcountry' );

$state   = ! empty( $state ) ? wpsc_get_state_by_id( $state, 'name' ) : '';

$cart_items = $purchase->get_items();

$total_shipping = wpsc_get_total_shipping( $purchase_id );
		$total_tax      = $total_price = 0;

foreach ( $cart_items as $item ) {
			/* For backwards compatibility, convert objects to arrays */
			$item         = (array) $item;
			$total_tax	 += $item['tax_charged'];
			$total_price += absint( $item['quantity'] ) * $item['price'];
		}

if ( $this->is_theme_tracking || $this->advanced_code ) {
			$output .= "<script type='text/javascript'>\n\r";
		}

add_filter( 'wpsc_toggle_display_currency_code', array( $this, 'remove_currency_and_html' ) );

if ( $this->use_universal_analytics() ) {

// Yoast GA Plugin switched to it's own object name __gaTracker - assign it to our ga object if it exists
			$output .= "var ga = typeof ga === 'undefined' && typeof __gaTracker !== 'undefined' ? __gaTracker : ga;";

$output .= "ga('require', 'ecommerce');\n\r";

$output .= "ga('ecommerce:addTransaction', {
				'id': '" . $purchase_id . "',                                               // Transaction ID. Required.
				'affiliation': '" . wp_specialchars_decode( $this->get_site_name() ) . "',  // Affiliation or store name.
				'revenue': '" . number_format( $total_price, 2, '.', '' ) . "',             // Grand Total.
				'shipping': '" . wpsc_currency_display( $total_shipping ) . "',             // Shipping.
				'tax': '" . wpsc_currency_display( $total_tax ) . "'                        // Tax.
			});\n\r";

} else {

$output .= "
				_gaq.push(['_addTrans',
				'" . $purchase_id . "',                                     // order ID - required
				'" . wp_specialchars_decode( $this->get_site_name() ) . "', // affiliation or store name
				'" . number_format( $total_price, 2, '.', '' ) . "',   // total - required
				'" . wpsc_currency_display( $total_tax ) . "',              // tax
				'" . wpsc_currency_display( $total_shipping ) . "',         // shipping
				'" . wp_specialchars_decode( $city ) . "',                  // city
				'" . wp_specialchars_decode( $state ) . "',                 // state or province
				'" . wp_specialchars_decode( $country ) . "'                // country
			]);\n\r";

}

remove_filter( 'wpsc_toggle_display_currency_code', array( $this, 'remove_currency_and_html' ) );

foreach( $cart_items as $item ) {
			/* For backwards compatibility, convert objects to arrays */
			$item = (array) $item;

$category = wp_get_object_terms(
				$item['prodid'],
				'wpsc_product_category',
				array( 'orderby' => 'count', 'order' => 'DESC', 'fields' => 'all_with_object_id' ) );

$item['sku'] = get_post_meta( $item['prodid'], '_wpsc_sku', true );

if ( empty( $item['sku'] ) ) {
				$item['sku'] = $item['prodid'];
			}

if ( $category ) {
				$item['category'] = $category[0]->name;
			} else {
				$item['category'] = '';
			}

$item = apply_filters( 'wpsc_google_analytics_pushed_product', array_map( 'wp_specialchars_decode', $item ), $item, $this );

if ( $this->use_universal_analytics() ) {

$output .= "ga('ecommerce:addItem', {"
					. "'id': '" . $purchase_id . "',"             // Transaction ID. Required.
					. "'name': '" . $item['name'] . "',"          // Product name. Required.
					. "'sku': '" . $item['sku'] . "',"            // SKU/code.
					. "'category': '" . $item['category'] . "',"  // Category or variation.
					. "'price': '" . $item['price'] . "',"        // Unit price.
					. "'quantity': '" . $item['quantity'] . "'"   // Quantity.
					. "});\n\r";

} else {

$output .= "_gaq.push(['_addItem',"
				. "'" . $purchase_id . "',"              // Order ID
				. "'" . $item['sku'] . "',"              // Item SKU
				. "'" . $item['name'] . "',"             // Item Name
				. "'" . $item['category'] . "',"         // Item Category
				. "'" . $item['price'] . "',"            // Item Price
				. "'" . $item['quantity'] . "']);\n\r";  // Item Quantity

}

if ( $this->use_universal_analytics() ) {

$output .= "ga('ecommerce:send');\n\r";

} else {

$output .= "_gaq.push(['_trackTrans']);\n\r";

}

if ( $this->is_theme_tracking || $this->advanced_code ) {
			$output .= "</script>\n\r";
		}

return $output;
	}

}

$GLOBALS['wpsc_google_analytics'] = new WPSC_Google_Analytics();

if ( ! function_exists( 'wpsc_get_total_shipping' ) ) :

/**
	 * New helper function for grabbing the total shipping of a purchase log
	 * @param int $purchase_id
	 * @return float shipping price
	 */
	function wpsc_get_total_shipping( $purchase_id ) {
		global $wpdb;

$per_item_shipping = $wpdb->get_col( $wpdb->prepare( 'SELECT pnp FROM ' . WPSC_TABLE_CART_CONTENTS . " WHERE purchaseid = %d", $purchase_id ) );
		$base_shipping     = $wpdb->get_var( $wpdb->prepare( 'SELECT base_shipping FROM ' . WPSC_TABLE_PURCHASE_LOGS . " WHERE id = %d", $purchase_id ) );

$total_shipping    = 0.00;

$per_item_shipping = array_sum( $per_item_shipping );

$total_shipping    = $base_shipping + $per_item_shipping;

return $total_shipping;
	}

endif;

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