<?php
/**
* Structured data's handler and generator using JSON-LD format.
*
* @package Kkart\Classes
* @since 3.0.0
* @version 3.0.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Structured data class.
*/
class KKART_Structured_Data {
/**
* Stores the structured data.
*
* @var array $_data Array of structured data.
*/
private $_data = array();
/**
* Constructor.
*/
public function __construct() {
// Generate structured data.
add_action( 'kkart_before_main_content', array( $this, 'generate_website_data' ), 30 );
add_action( 'kkart_breadcrumb', array( $this, 'generate_breadcrumblist_data' ), 10 );
add_action( 'kkart_single_product_summary', array( $this, 'generate_product_data' ), 60 );
add_action( 'kkart_email_order_details', array( $this, 'generate_order_data' ), 20, 3 );
// Output structured data.
add_action( 'kkart_email_order_details', array( $this, 'output_email_structured_data' ), 30, 3 );
add_action( 'wp_footer', array( $this, 'output_structured_data' ), 10 );
}
/**
* Sets data.
*
* @param array $data Structured data.
* @param bool $reset Unset data (default: false).
* @return bool
*/
public function set_data( $data, $reset = false ) {
if ( ! isset( $data['@type'] ) || ! preg_match( '|^[a-zA-Z]{1,20}$|', $data['@type'] ) ) {
return false;
}
if ( $reset && isset( $this->_data ) ) {
unset( $this->_data );
}
$this->_data[] = $data;
return true;
}
/**
* Gets data.
*
* @return array
*/
public function get_data() {
return $this->_data;
}
/**
* Structures and returns data.
*
* List of types available by default for specific request:
*
* 'product',
* 'review',
* 'breadcrumblist',
* 'website',
* 'order',
*
* @param array $types Structured data types.
* @return array
*/
public function get_structured_data( $types ) {
$data = array();
// Put together the values of same type of structured data.
foreach ( $this->get_data() as $value ) {
$data[ strtolower( $value['@type'] ) ][] = $value;
}
// Wrap the multiple values of each type inside a graph... Then add context to each type.
foreach ( $data as $type => $value ) {
$data[ $type ] = count( $value ) > 1 ? array( '@graph' => $value ) : $value[0];
$data[ $type ] = apply_filters( 'kkart_structured_data_context', array( '@context' => 'https://schema.org/' ), $data, $type, $value ) + $data[ $type ];
}
// If requested types, pick them up... Finally change the associative array to an indexed one.
$data = $types ? array_values( array_intersect_key( $data, array_flip( $types ) ) ) : array_values( $data );
if ( ! empty( $data ) ) {
if ( 1 < count( $data ) ) {
$data = apply_filters( 'kkart_structured_data_context', array( '@context' => 'https://schema.org/' ), $data, '', '' ) + array( '@graph' => $data );
} else {
$data = $data[0];
}
}
return $data;
}
/**
* Get data types for pages.
*
* @return array
*/
protected function get_data_type_for_page() {
$types = array();
$types[] = is_shop() || is_product_category() || is_product() ? 'product' : '';
$types[] = is_shop() && is_front_page() ? 'website' : '';
$types[] = is_product() ? 'review' : '';
$types[] = 'breadcrumblist';
$types[] = 'order';
return array_filter( apply_filters( 'kkart_structured_data_type_for_page', $types ) );
}
/**
* Makes sure email structured data only outputs on non-plain text versions.
*
* @param WP_Order $order Order data.
* @param bool $sent_to_admin Send to admin (default: false).
* @param bool $plain_text Plain text email (default: false).
*/
public function output_email_structured_data( $order, $sent_to_admin = false, $plain_text = false ) {
if ( $plain_text ) {
return;
}
echo '<div style="display: none; font-size: 0; max-height: 0; line-height: 0; padding: 0; mso-hide: all;">';
$this->output_structured_data();
echo '</div>';
}
/**
* Sanitizes, encodes and outputs structured data.
*
* Hooked into `wp_footer` action hook.
* Hooked into `kkart_email_order_details` action hook.
*/
public function output_structured_data() {
$types = $this->get_data_type_for_page();
$data = $this->get_structured_data( $types );
if ( $data ) {
echo '<script type="application/ld+json">' . kkart_esc_json( wp_json_encode( $data ), true ) . '</script>'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
}
/*
|--------------------------------------------------------------------------
| Generators
|--------------------------------------------------------------------------
|
| Methods for generating specific structured data types:
|
| - Product
| - Review
| - BreadcrumbList
| - WebSite
| - Order
|
| The generated data is stored into `$this->_data`.
| See the methods above for handling `$this->_data`.
|
*/
/**
* Generates Product structured data.
*
* Hooked into `kkart_single_product_summary` action hook.
*
* @param KKART_Product $product Product data (default: null).
*/
public function generate_product_data( $product = null ) {
if ( ! is_object( $product ) ) {
global $product;
}
if ( ! is_a( $product, 'KKART_Product' ) ) {
return;
}
$shop_name = get_bloginfo( 'name' );
$shop_url = home_url();
$currency = get_kkart_currency();
$permalink = get_permalink( $product->get_id() );
$image = wp_get_attachment_url( $product->get_image_id() );
$markup = array(
'@type' => 'Product',
'@id' => $permalink . '#product', // Append '#product' to differentiate between this @id and the @id generated for the Breadcrumblist.
'name' => $product->get_name(),
'url' => $permalink,
'description' => wp_strip_all_tags( do_shortcode( $product->get_short_description() ? $product->get_short_description() : $product->get_description() ) ),
);
if ( $image ) {
$markup['image'] = $image;
}
// Declare SKU or fallback to ID.
if ( $product->get_sku() ) {
$markup['sku'] = $product->get_sku();
} else {
$markup['sku'] = $product->get_id();
}
if ( '' !== $product->get_price() ) {
// Assume prices will be valid until the end of next year, unless on sale and there is an end date.
$price_valid_until = gmdate( 'Y-12-31', time() + YEAR_IN_SECONDS );
if ( $product->is_type( 'variable' ) ) {
$lowest = $product->get_variation_price( 'min', false );
$highest = $product->get_variation_price( 'max', false );
if ( $lowest === $highest ) {
$markup_offer = array(
'@type' => 'Offer',
'price' => kkart_format_decimal( $lowest, kkart_get_price_decimals() ),
'priceValidUntil' => $price_valid_until,
'priceSpecification' => array(
'price' => kkart_format_decimal( $lowest, kkart_get_price_decimals() ),
'priceCurrency' => $currency,
'valueAddedTaxIncluded' => kkart_prices_include_tax() ? 'true' : 'false',
),
);
} else {
$markup_offer = array(
'@type' => 'AggregateOffer',
'lowPrice' => kkart_format_decimal( $lowest, kkart_get_price_decimals() ),
'highPrice' => kkart_format_decimal( $highest, kkart_get_price_decimals() ),
'offerCount' => count( $product->get_children() ),
);
}
} else {
if ( $product->is_on_sale() && $product->get_date_on_sale_to() ) {
$price_valid_until = gmdate( 'Y-m-d', $product->get_date_on_sale_to()->getTimestamp() );
}
$markup_offer = array(
'@type' => 'Offer',
'price' => kkart_format_decimal( $product->get_price(), kkart_get_price_decimals() ),
'priceValidUntil' => $price_valid_until,
'priceSpecification' => array(
'price' => kkart_format_decimal( $product->get_price(), kkart_get_price_decimals() ),
'priceCurrency' => $currency,
'valueAddedTaxIncluded' => kkart_prices_include_tax() ? 'true' : 'false',
),
);
}
$markup_offer += array(
'priceCurrency' => $currency,
'availability' => 'http://schema.org/' . ( $product->is_in_stock() ? 'InStock' : 'OutOfStock' ),
'url' => $permalink,
'seller' => array(
'@type' => 'Organization',
'name' => $shop_name,
'url' => $shop_url,
),
);
$markup['offers'] = array( apply_filters( 'kkart_structured_data_product_offer', $markup_offer, $product ) );
}
if ( $product->get_rating_count() && kkart_review_ratings_enabled() ) {
$markup['aggregateRating'] = array(
'@type' => 'AggregateRating',
'ratingValue' => $product->get_average_rating(),
'reviewCount' => $product->get_review_count(),
);
// Markup 5 most recent rating/review.
$comments = get_comments(
array(
'number' => 5,
'post_id' => $product->get_id(),
'status' => 'approve',
'post_status' => 'publish',
'post_type' => 'product',
'parent' => 0,
'meta_query' => array( // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
array(
'key' => 'rating',
'type' => 'NUMERIC',
'compare' => '>',
'value' => 0,
),
),
)
);
if ( $comments ) {
$markup['review'] = array();
foreach ( $comments as $comment ) {
$markup['review'][] = array(
'@type' => 'Review',
'reviewRating' => array(
'@type' => 'Rating',
'bestRating' => '5',
'ratingValue' => get_comment_meta( $comment->comment_ID, 'rating', true ),
'worstRating' => '1',
),
'author' => array(
'@type' => 'Person',
'name' => get_comment_author( $comment ),
),
'reviewBody' => get_comment_text( $comment ),
'datePublished' => get_comment_date( 'c', $comment ),
);
}
}
}
// Check we have required data.
if ( empty( $markup['aggregateRating'] ) && empty( $markup['offers'] ) && empty( $markup['review'] ) ) {
return;
}
$this->set_data( apply_filters( 'kkart_structured_data_product', $markup, $product ) );
}
/**
* Generates Review structured data.
*
* Hooked into `kkart_review_meta` action hook.
*
* @param WP_Comment $comment Comment data.
*/
public function generate_review_data( $comment ) {
$markup = array();
$markup['@type'] = 'Review';
$markup['@id'] = get_comment_link( $comment->comment_ID );
$markup['datePublished'] = get_comment_date( 'c', $comment->comment_ID );
$markup['description'] = get_comment_text( $comment->comment_ID );
$markup['itemReviewed'] = array(
'@type' => 'Product',
'name' => get_the_title( $comment->comment_post_ID ),
);
// Skip replies unless they have a rating.
$rating = get_comment_meta( $comment->comment_ID, 'rating', true );
if ( $rating ) {
$markup['reviewRating'] = array(
'@type' => 'Rating',
'bestRating' => '5',
'ratingValue' => $rating,
'worstRating' => '1',
);
} elseif ( $comment->comment_parent ) {
return;
}
$markup['author'] = array(
'@type' => 'Person',
'name' => get_comment_author( $comment->comment_ID ),
);
$this->set_data( apply_filters( 'kkart_structured_data_review', $markup, $comment ) );
}
/**
* Generates BreadcrumbList structured data.
*
* Hooked into `kkart_breadcrumb` action hook.
*
* @param KKART_Breadcrumb $breadcrumbs Breadcrumb data.
*/
public function generate_breadcrumblist_data( $breadcrumbs ) {
$crumbs = $breadcrumbs->get_breadcrumb();
if ( empty( $crumbs ) || ! is_array( $crumbs ) ) {
return;
}
$markup = array();
$markup['@type'] = 'BreadcrumbList';
$markup['itemListElement'] = array();
foreach ( $crumbs as $key => $crumb ) {
$markup['itemListElement'][ $key ] = array(
'@type' => 'ListItem',
'position' => $key + 1,
'item' => array(
'name' => $crumb[0],
),
);
if ( ! empty( $crumb[1] ) ) {
$markup['itemListElement'][ $key ]['item'] += array( '@id' => $crumb[1] );
} elseif ( isset( $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'] ) ) {
$current_url = set_url_scheme( 'http://' . wp_unslash( $_SERVER['HTTP_HOST'] ) . wp_unslash( $_SERVER['REQUEST_URI'] ) ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$markup['itemListElement'][ $key ]['item'] += array( '@id' => $current_url );
}
}
$this->set_data( apply_filters( 'kkart_structured_data_breadcrumblist', $markup, $breadcrumbs ) );
}
/**
* Generates WebSite structured data.
*
* Hooked into `kkart_before_main_content` action hook.
*/
public function generate_website_data() {
$markup = array();
$markup['@type'] = 'WebSite';
$markup['name'] = get_bloginfo( 'name' );
$markup['url'] = home_url();
$markup['potentialAction'] = array(
'@type' => 'SearchAction',
'target' => home_url( '?s={search_term_string}&post_type=product' ),
'query-input' => 'required name=search_term_string',
);
$this->set_data( apply_filters( 'kkart_structured_data_website', $markup ) );
}
/**
* Generates Order structured data.
*
* Hooked into `kkart_email_order_details` action hook.
*
* @param WP_Order $order Order data.
* @param bool $sent_to_admin Send to admin (default: false).
* @param bool $plain_text Plain text email (default: false).
*/
public function generate_order_data( $order, $sent_to_admin = false, $plain_text = false ) {
if ( $plain_text || ! is_a( $order, 'KKART_Order' ) ) {
return;
}
$shop_name = get_bloginfo( 'name' );
$shop_url = home_url();
$order_url = $sent_to_admin ? $order->get_edit_order_url() : $order->get_view_order_url();
$order_statuses = array(
'pending' => 'https://schema.org/OrderPaymentDue',
'processing' => 'https://schema.org/OrderProcessing',
'on-hold' => 'https://schema.org/OrderProblem',
'completed' => 'https://schema.org/OrderDelivered',
'cancelled' => 'https://schema.org/OrderCancelled',
'refunded' => 'https://schema.org/OrderReturned',
'failed' => 'https://schema.org/OrderProblem',
);
$markup_offers = array();
foreach ( $order->get_items() as $item ) {
if ( ! apply_filters( 'kkart_order_item_visible', true, $item ) ) {
continue;
}
$product = $item->get_product();
$product_exists = is_object( $product );
$is_visible = $product_exists && $product->is_visible();
$markup_offers[] = array(
'@type' => 'Offer',
'price' => $order->get_line_subtotal( $item ),
'priceCurrency' => $order->get_currency(),
'priceSpecification' => array(
'price' => $order->get_line_subtotal( $item ),
'priceCurrency' => $order->get_currency(),
'eligibleQuantity' => array(
'@type' => 'QuantitativeValue',
'value' => apply_filters( 'kkart_email_order_item_quantity', $item->get_quantity(), $item ),
),
),
'itemOffered' => array(
'@type' => 'Product',
'name' => apply_filters( 'kkart_order_item_name', $item->get_name(), $item, $is_visible ),
'sku' => $product_exists ? $product->get_sku() : '',
'image' => $product_exists ? wp_get_attachment_image_url( $product->get_image_id() ) : '',
'url' => $is_visible ? get_permalink( $product->get_id() ) : get_home_url(),
),
'seller' => array(
'@type' => 'Organization',
'name' => $shop_name,
'url' => $shop_url,
),
);
}
$markup = array();
$markup['@type'] = 'Order';
$markup['url'] = $order_url;
$markup['orderStatus'] = isset( $order_statuses[ $order->get_status() ] ) ? $order_statuses[ $order->get_status() ] : '';
$markup['orderNumber'] = $order->get_order_number();
$markup['orderDate'] = $order->get_date_created()->format( 'c' );
$markup['acceptedOffer'] = $markup_offers;
$markup['discount'] = $order->get_total_discount();
$markup['discountCurrency'] = $order->get_currency();
$markup['price'] = $order->get_total();
$markup['priceCurrency'] = $order->get_currency();
$markup['priceSpecification'] = array(
'price' => $order->get_total(),
'priceCurrency' => $order->get_currency(),
'valueAddedTaxIncluded' => 'true',
);
$markup['billingAddress'] = array(
'@type' => 'PostalAddress',
'name' => $order->get_formatted_billing_full_name(),
'streetAddress' => $order->get_billing_address_1(),
'postalCode' => $order->get_billing_postcode(),
'addressLocality' => $order->get_billing_city(),
'addressRegion' => $order->get_billing_state(),
'addressCountry' => $order->get_billing_country(),
'email' => $order->get_billing_email(),
'telephone' => $order->get_billing_phone(),
);
$markup['customer'] = array(
'@type' => 'Person',
'name' => $order->get_formatted_billing_full_name(),
);
$markup['merchant'] = array(
'@type' => 'Organization',
'name' => $shop_name,
'url' => $shop_url,
);
$markup['potentialAction'] = array(
'@type' => 'ViewAction',
'name' => 'View Order',
'url' => $order_url,
'target' => $order_url,
);
$this->set_data( apply_filters( 'kkart_structured_data_order', $markup, $sent_to_admin, $order ), true );
}
}