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<?php
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/**
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* Jetpack_WooCommerce_Analytics_Universal
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*
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* @package Jetpack
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* @author Automattic
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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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/**
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* Class Jetpack_WooCommerce_Analytics_Universal
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* Filters and Actions added to Store pages to perform analytics
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*/
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class Jetpack_WooCommerce_Analytics_Universal {
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/**
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* Jetpack_WooCommerce_Analytics_Universal constructor.
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*/
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public function __construct() {
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// loading _wca
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add_action( 'wp_head', array( $this, 'wp_head_top' ), 1 );
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// add to carts from non-product pages or lists (search, store etc.)
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add_action( 'wp_head', array( $this, 'loop_session_events' ), 2 );
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// loading s.js
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add_action( 'wp_head', array( $this, 'wp_head_bottom' ), 999999 );
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// Capture cart events
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add_action( 'woocommerce_add_to_cart', array( $this, 'capture_add_to_cart' ), 10, 6 );
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// single product page view
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add_action( 'woocommerce_after_single_product', array( $this, 'capture_product_view' ) );
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add_action( 'woocommerce_after_cart', array( $this, 'remove_from_cart' ) );
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add_action( 'woocommerce_after_mini_cart', array( $this, 'remove_from_cart' ) );
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add_action( 'wcct_before_cart_widget', array( $this, 'remove_from_cart' ) );
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add_filter( 'woocommerce_cart_item_remove_link', array( $this, 'remove_from_cart_attributes' ), 10, 2 );
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// cart checkout
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add_action( 'woocommerce_after_checkout_form', array( $this, 'checkout_process' ) );
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// order confirmed
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add_action( 'woocommerce_thankyou', array( $this, 'order_process' ), 10, 1 );
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add_action( 'woocommerce_after_cart', array( $this, 'remove_from_cart_via_quantity' ), 10, 1 );
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}
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/**
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* Make _wca available to queue events
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*/
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public function wp_head_top() {
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if ( is_cart() || is_checkout() || is_checkout_pay_page() || is_order_received_page() || is_add_payment_method_page() ) {
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$prevent_referrer_code = '<script>window._wca_prevent_referrer = true;</script>';
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echo "$prevent_referrer_code\r\n";
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}
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$wca_code = '<script>window._wca = window._wca || [];</script>';
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echo "$wca_code\r\n";
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}
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/**
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* Place script to call s.js, Store Analytics
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*/
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public function wp_head_bottom() {
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$filename = 's-' . gmdate( 'YW' ) . '.js';
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$async_code = "<script async src='https://stats.wp.com/" . $filename . "'></script>";
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echo "$async_code\r\n";
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}
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/**
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* On product lists or other non-product pages, add an event listener to "Add to Cart" button click
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*/
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public function loop_session_events() {
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$blogid = Jetpack::get_option( 'id' );
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// check for previous add-to-cart cart events
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if ( is_object( WC()->session ) ) {
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$data = WC()->session->get( 'wca_session_data' );
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if ( ! empty( $data ) ) {
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foreach ( $data as $data_instance ) {
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$product = wc_get_product( $data_instance['product_id'] );
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if ( ! $product ) {
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continue;
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}
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$product_details = $this->get_product_details( $product );
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wc_enqueue_js(
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"_wca.push( {
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'_en': '" . esc_js( $data_instance['event'] ) . "',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': '" . esc_js( $data_instance['product_id'] ) . "',
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'pn': '" . esc_js( $product_details['name'] ) . "',
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'pc': '" . esc_js( $product_details['category'] ) . "',
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'pp': '" . esc_js( $product_details['price'] ) . "',
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'pq': '" . esc_js( $data_instance['quantity'] ) . "',
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'pt': '" . esc_js( $product_details['type'] ) . "',
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );"
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);
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}
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// clear data
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WC()->session->set( 'wca_session_data', '' );
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}
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}
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}
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/**
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* On the cart page, add an event listener for removal of product click
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*/
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public function remove_from_cart() {
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// We listen at div.woocommerce because the cart 'form' contents get forcibly
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// updated and subsequent removals from cart would then not have this click
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// handler attached.
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$blogid = Jetpack::get_option( 'id' );
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wc_enqueue_js(
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"jQuery( 'div.woocommerce' ).on( 'click', 'a.remove', function() {
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var productID = jQuery( this ).data( 'product_id' );
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var quantity = jQuery( this ).parent().parent().find( '.qty' ).val()
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var productDetails = {
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'id': productID,
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'quantity': quantity ? quantity : '1',
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};
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_wca.push( {
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'_en': 'woocommerceanalytics_remove_from_cart',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': productDetails.id,
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'pq': productDetails.quantity,
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );
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} );"
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);
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}
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/**
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* Adds the product ID to the remove product link (for use by remove_from_cart above) if not present
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*
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* @param string $url Full HTML a tag of the link to remove an item from the cart.
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* @param string $key Unique Key ID for a cart item.
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*
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* @return mixed.
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*/
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public function remove_from_cart_attributes( $url, $key ) {
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if ( false !== strpos( $url, 'data-product_id' ) ) {
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return $url;
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}
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$item = WC()->cart->get_cart_item( $key );
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$product = $item['data'];
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$new_attributes = sprintf(
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'" data-product_id="%s">',
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esc_attr( $product->get_id() )
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);
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$url = str_replace( '">', $new_attributes, $url );
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return $url;
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}
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/**
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* Gather relevant product information
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*
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* @param array $product product
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* @return array
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*/
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public function get_product_details( $product ) {
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return array(
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'id' => $product->get_id(),
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'name' => $product->get_title(),
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'category' => $this->get_product_categories_concatenated( $product ),
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'price' => $product->get_price(),
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'type' => $product->get_type(),
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);
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}
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/**
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* Track a product page view
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*/
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public function capture_product_view() {
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global $product;
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$blogid = Jetpack::get_option( 'id' );
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$product_details = $this->get_product_details( $product );
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wc_enqueue_js(
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"_wca.push( {
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'_en': 'woocommerceanalytics_product_view',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': '" . esc_js( $product_details['id'] ) . "',
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'pn': '" . esc_js( $product_details['name'] ) . "',
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'pc': '" . esc_js( $product_details['category'] ) . "',
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'pp': '" . esc_js( $product_details['price'] ) . "',
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'pt': '" . esc_js( $product_details['type'] ) . "',
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );"
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);
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}
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/**
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* On the Checkout page, trigger an event for each product in the cart
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*/
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public function checkout_process() {
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$universal_commands = array();
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$cart = WC()->cart->get_cart();
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$blogid = Jetpack::get_option( 'id' );
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foreach ( $cart as $cart_item_key => $cart_item ) {
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/**
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* This filter is already documented in woocommerce/templates/cart/cart.php
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*/
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$product = apply_filters( 'woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key );
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if ( ! $product ) {
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continue;
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}
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$product_details = $this->get_product_details( $product );
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$universal_commands[] = "_wca.push( {
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'_en': 'woocommerceanalytics_product_checkout',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': '" . esc_js( $product_details['id'] ) . "',
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'pn': '" . esc_js( $product_details['name'] ) . "',
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'pc': '" . esc_js( $product_details['category'] ) . "',
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'pp': '" . esc_js( $product_details['price'] ) . "',
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'pq': '" . esc_js( $cart_item['quantity'] ) . "',
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'pt': '" . esc_js( $product_details['type'] ) . "',
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );";
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}
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wc_enqueue_js( implode( "\r\n", $universal_commands ) );
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}
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/**
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* After the checkout process, fire an event for each item in the order
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*
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* @param string $order_id Order Id.
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*/
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public function order_process( $order_id ) {
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$order = wc_get_order( $order_id );
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$universal_commands = array();
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$blogid = Jetpack::get_option( 'id' );
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// loop through products in the order and queue a purchase event.
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foreach ( $order->get_items() as $order_item_id => $order_item ) {
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$product = $order->get_product_from_item( $order_item );
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$product_details = $this->get_product_details( $product );
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$universal_commands[] = "_wca.push( {
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'_en': 'woocommerceanalytics_product_purchase',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': '" . esc_js( $product_details['id'] ) . "',
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'pn': '" . esc_js( $product_details['name'] ) . "',
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'pc': '" . esc_js( $product_details['category'] ) . "',
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'pp': '" . esc_js( $product_details['price'] ) . "',
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'pq': '" . esc_js( $order_item->get_quantity() ) . "',
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'pt': '" . esc_js( $product_details['type'] ) . "',
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'oi': '" . esc_js( $order->get_order_number() ) . "',
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );";
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}
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wc_enqueue_js( implode( "\r\n", $universal_commands ) );
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}
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/**
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* Listen for clicks on the "Update Cart" button to know if an item has been removed by
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* updating its quantity to zero
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*/
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public function remove_from_cart_via_quantity() {
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$blogid = Jetpack::get_option( 'id' );
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wc_enqueue_js(
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"
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jQuery( 'button[name=update_cart]' ).on( 'click', function() {
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var cartItems = jQuery( '.cart_item' );
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cartItems.each( function( item ) {
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var qty = jQuery( this ).find( 'input.qty' );
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if ( qty && qty.val() === '0' ) {
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var productID = jQuery( this ).find( '.product-remove a' ).data( 'product_id' );
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_wca.push( {
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'_en': 'woocommerceanalytics_remove_from_cart',
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'blog_id': '" . esc_js( $blogid ) . "',
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'pi': productID,
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'ui': '" . esc_js( $this->get_user_id() ) . "',
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} );
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}
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} );
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} );
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"
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);
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}
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/**
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* Get the current user id
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*
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* @return int
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*/
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public function get_user_id() {
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if ( is_user_logged_in() ) {
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$blogid = Jetpack::get_option( 'id' );
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$userid = get_current_user_id();
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return $blogid . ':' . $userid;
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}
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return 'null';
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}
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/**
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* @param $cart_item_key
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* @param $product_id
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* @param $quantity
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* @param $variation_id
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* @param $variation
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* @param $cart_item_data
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*/
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public function capture_add_to_cart( $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data ) {
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$referer_postid = isset( $_SERVER['HTTP_REFERER'] ) ? url_to_postid( $_SERVER['HTTP_REFERER'] ) : 0;
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// if the referring post is not a product OR the product being added is not the same as post
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// (eg. related product list on single product page) then include a product view event
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if ( ! wc_get_product( $referer_postid ) || $product_id != $referer_postid ) {
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$this->capture_event_in_session_data( $product_id, $quantity, 'woocommerceanalytics_product_view' );
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}
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// add cart event to the session data
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$this->capture_event_in_session_data( $product_id, $quantity, 'woocommerceanalytics_add_to_cart' );
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}
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/**
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* @param $product_id
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* @param $quantity
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* @param $event
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*/
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public function capture_event_in_session_data( $product_id, $quantity, $event ) {
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$product = wc_get_product( $product_id );
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if ( ! $product ) {
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return;
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}
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$quantity = ( $quantity == 0 ) ? 1 : $quantity;
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// check for existing data
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if ( is_object( WC()->session ) ) {
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$data = WC()->session->get( 'wca_session_data' );
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if ( empty( $data ) || ! is_array( $data ) ) {
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$data = array();
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}
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} else {
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$data = array();
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}
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// extract new event data
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$new_data = array(
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'event' => $event,
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'product_id' => (string) $product_id,
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'quantity' => (string) $quantity,
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);
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// append new data
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$data[] = $new_data;
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WC()->session->set( 'wca_session_data', $data );
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}
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/**
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* Gets product categories or varation attributes as a formatted concatenated string
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*
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* @param object $product WC_Product.
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* @return string
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*/
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public function get_product_categories_concatenated( $product ) {
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if ( ! $product ) {
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return '';
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}
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$variation_data = $product->is_type( 'variation' ) ? wc_get_product_variation_attributes( $product->get_id() ) : '';
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if ( is_array( $variation_data ) && ! empty( $variation_data ) ) {
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$line = wc_get_formatted_variation( $variation_data, true );
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} else {
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$out = array();
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$categories = get_the_terms( $product->get_id(), 'product_cat' );
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if ( $categories ) {
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foreach ( $categories as $category ) {
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$out[] = $category->name;
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}
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}
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$line = join( '/', $out );
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}
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return $line;
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}
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}
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