woothemes/woocommerce

<?php
/**
 * WooCommerce product embed
 *
 * @version  2.4.11
 * @package  WooCommerce\Classes\Embed
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Embed Class which handles any WooCommerce Products that are embedded on this site or another site.
 */
class WC_Embed {

    /**
     * Init embed class.
     *
     * @since 2.4.11
     */
    public static function init() {

        // Filter all of the content that's going to be embedded.
        add_filter( 'the_excerpt_embed', array( __CLASS__, 'the_excerpt' ), 10 );

        // Make sure no comments display. Doesn't make sense for products.
        add_action( 'embed_content_meta', array( __CLASS__, 'remove_comments_button' ), 5 );

        // In the comments place let's display the product rating.
        add_action( 'embed_content_meta', array( __CLASS__, 'get_ratings' ), 5 );

        // Add some basic styles.
        add_action( 'embed_head', array( __CLASS__, 'print_embed_styles' ) );
    }

    /**
     * Remove comments button on product embeds.
     *
     * @since 2.6.0
     */
    public static function remove_comments_button() {
        if ( self::is_embedded_product() ) {
            remove_action( 'embed_content_meta', 'print_embed_comments_button' );
        }
    }

    /**
     * Check if this is an embedded product - to make sure we don't mess up regular posts.
     *
     * @since 2.4.11
     * @return bool
     */
    public static function is_embedded_product() {
        if ( function_exists( 'is_embed' ) && is_embed() && is_product() ) {
            return true;
        }
        return false;
    }

    /**
     * Create the excerpt for embedded products - we want to add the buy button to it.
     *
     * @since 2.4.11
     * @param string $excerpt Embed short description.
     * @return string
     */
    public static function the_excerpt( $excerpt ) {
        global $post;

        // Get product.
        $_product = wc_get_product( get_the_ID() );

        // Make sure we're only affecting embedded products.
        if ( self::is_embedded_product() ) {
            echo '<p><span class="wc-embed-price">' . $_product->get_price_html() . '</span></p>'; // WPCS: XSS ok.

            if ( ! empty( $post->post_excerpt ) ) {
                ob_start();
                woocommerce_template_single_excerpt();
                $excerpt = ob_get_clean();
            }

            // Add the button.
            $excerpt .= self::product_buttons();
        }
        return $excerpt;
    }

    /**
     * Create the button to go to the product page for embedded products.
     *
     * @since 2.4.11
     * @return string
     */
    public static function product_buttons() {
        $_product = wc_get_product( get_the_ID() );
        $buttons  = array();
        $button   = '<a href="%s" class="wp-embed-more wc-embed-button">%s</a>';

        if ( $_product->is_type( 'simple' ) && $_product->is_purchasable() && $_product->is_in_stock() ) {
            $buttons[] = sprintf( $button, esc_url( add_query_arg( 'add-to-cart', get_the_ID(), wc_get_cart_url() ) ), esc_html__( 'Buy now', 'woocommerce' ) );
        }

        $buttons[] = sprintf( $button, get_the_permalink(), esc_html__( 'Read more', 'woocommerce' ) );

        return '<p>' . implode( ' ', $buttons ) . '</p>';
    }

    /**
     * Prints the markup for the rating stars.
     *
     * @since 2.4.11
     */
    public static function get_ratings() {
        // Make sure we're only affecting embedded products.
        if ( ! self::is_embedded_product() ) {
            return;
        }

        $_product = wc_get_product( get_the_ID() );

        if ( $_product && $_product->get_average_rating() > 0 ) {
            ?>
            <div class="wc-embed-rating">
                <?php
                    printf(
                        /* translators: %s: average rating */
                        esc_html__( 'Rated %s out of 5', 'woocommerce' ),
                        esc_html( $_product->get_average_rating() )
                    );
                ?>
            </div>
            <?php
        }
    }

    /**
     * Basic styling.
     */
    public static function print_embed_styles() {
        if ( ! self::is_embedded_product() ) {
            return;
        }
        ?>
        <style type="text/css">
            a.wc-embed-button {
                border-radius: 4px;
                border: 1px solid #ddd;
                box-shadow: 0px 1px 0 0px rgba(0, 0, 0, 0.05);
                display:inline-block;
                padding: .5em;
            }
            a.wc-embed-button:hover, a.wc-embed-button:focus {
                border: 1px solid #ccc;
                box-shadow: 0px 1px 0 0px rgba(0, 0, 0, 0.1);
                color: #999;
                text-decoration: none;
            }
            .wp-embed-excerpt p {
                margin: 0 0 1em;
            }
            .wc-embed-price {
                display: block;
                opacity: .75;
                font-weight: 700;
                margin-top: -.75em;
            }
            .wc-embed-rating {
                display: inline-block;
            }
        </style>
        <?php
    }
}

WC_Embed::init();