woothemes/woocommerce

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includes/data-stores/class-wc-product-variation-data-store-cpt.php

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<?php
/**
 * Class WC_Product_Variation_Data_Store_CPT file.
 *
 * @package WooCommerce\DataStores
 */

use Automattic\Jetpack\Constants;

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

/**
 * WC Variation Product Data Store: Stored in CPT.
 *
 * @version  3.0.0
 */
class WC_Product_Variation_Data_Store_CPT extends WC_Product_Data_Store_CPT implements WC_Object_Data_Store_Interface {

    /**
     * Callback to remove unwanted meta data.
     *
     * @param object $meta Meta object.
     * @return bool false if excluded.
     */
    protected function exclude_internal_meta_keys( $meta ) {
        return ! in_array( $meta->meta_key, $this->internal_meta_keys, true ) && 0 !== stripos( $meta->meta_key, 'attribute_' ) && 0 !== stripos( $meta->meta_key, 'wp_' );
    }

    /*
    |--------------------------------------------------------------------------
    | CRUD Methods
    |--------------------------------------------------------------------------
    */

    /**
     * Reads a product from the database and sets its data to the class.
     *
     * @since 3.0.0
     * @param WC_Product_Variation $product Product object.
     * @throws WC_Data_Exception If WC_Product::set_tax_status() is called with an invalid tax status (via read_product_data), or when passing an invalid ID.
     */
    public function read( &$product ) {
        $product->set_defaults();

        if ( ! $product->get_id() ) {
            return;
        }

        $post_object = get_post( $product->get_id() );

        if ( ! $post_object ) {
            return;
        }

        if ( 'product_variation' !== $post_object->post_type ) {
            throw new WC_Data_Exception( 'variation_invalid_id', __( 'Invalid product type: passed ID does not correspond to a product variation.', 'woocommerce' ) );
        }

        $product->set_props(
            array(
                'name'              => $post_object->post_title,
                'slug'              => $post_object->post_name,
                'date_created'      => $this->string_to_timestamp( $post_object->post_date_gmt ),
                'date_modified'     => $this->string_to_timestamp( $post_object->post_modified_gmt ),
                'status'            => $post_object->post_status,
                'menu_order'        => $post_object->menu_order,
                'reviews_allowed'   => 'open' === $post_object->comment_status,
                'parent_id'         => $post_object->post_parent,
                'attribute_summary' => $post_object->post_excerpt,
            )
        );

        // The post parent is not a valid variable product so we should prevent this.
        if ( $product->get_parent_id( 'edit' ) && 'product' !== get_post_type( $product->get_parent_id( 'edit' ) ) ) {
            $product->set_parent_id( 0 );
        }

        $this->read_downloads( $product );
        $this->read_product_data( $product );
        $this->read_extra_data( $product );
        $product->set_attributes( wc_get_product_variation_attributes( $product->get_id() ) );

        $updates = array();
        /**
         * If a variation title is not in sync with the parent e.g. saved prior to 3.0, or if the parent title has changed, detect here and update.
         */
        $new_title = $this->generate_product_title( $product );

        if ( $post_object->post_title !== $new_title ) {
            $product->set_name( $new_title );
            $updates = array_merge( $updates, array( 'post_title' => $new_title ) );
        }

        /**
         * If the attribute summary is not in sync, update here. Used when searching for variations by attribute values.
         * This is meant to also cover the case when global attribute name or value is updated, then the attribute summary is updated
         * for respective products when they're read.
         */
        $new_attribute_summary = $this->generate_attribute_summary( $product );

        if ( $new_attribute_summary !== $post_object->post_excerpt ) {
            $product->set_attribute_summary( $new_attribute_summary );
            $updates = array_merge( $updates, array( 'post_excerpt' => $new_attribute_summary ) );
        }

        if ( ! empty( $updates ) ) {
            $GLOBALS['wpdb']->update( $GLOBALS['wpdb']->posts, $updates, array( 'ID' => $product->get_id() ) );
            clean_post_cache( $product->get_id() );
        }

        // Set object_read true once all data is read.
        $product->set_object_read( true );
    }

    /**
     * Create a new product.
     *
     * @since 3.0.0
     * @param WC_Product_Variation $product Product object.
     */
    public function create( &$product ) {
        if ( ! $product->get_date_created() ) {
            $product->set_date_created( time() );
        }

        $new_title = $this->generate_product_title( $product );

        if ( $product->get_name( 'edit' ) !== $new_title ) {
            $product->set_name( $new_title );
        }

        $attribute_summary = $this->generate_attribute_summary( $product );
        $product->set_attribute_summary( $attribute_summary );

        // The post parent is not a valid variable product so we should prevent this.
        if ( $product->get_parent_id( 'edit' ) && 'product' !== get_post_type( $product->get_parent_id( 'edit' ) ) ) {
            $product->set_parent_id( 0 );
        }

        $id = wp_insert_post(
            apply_filters(
                'woocommerce_new_product_variation_data',
                array(
                    'post_type'      => 'product_variation',
                    'post_status'    => $product->get_status() ? $product->get_status() : 'publish',
                    'post_author'    => get_current_user_id(),
                    'post_title'     => $product->get_name( 'edit' ),
                    'post_excerpt'   => $product->get_attribute_summary( 'edit' ),
                    'post_content'   => '',
                    'post_parent'    => $product->get_parent_id(),
                    'comment_status' => 'closed',
                    'ping_status'    => 'closed',
                    'menu_order'     => $product->get_menu_order(),
                    'post_date'      => gmdate( 'Y-m-d H:i:s', $product->get_date_created( 'edit' )->getOffsetTimestamp() ),
                    'post_date_gmt'  => gmdate( 'Y-m-d H:i:s', $product->get_date_created( 'edit' )->getTimestamp() ),
                    'post_name'      => $product->get_slug( 'edit' ),
                )
            ),
            true
        );

        if ( $id && ! is_wp_error( $id ) ) {
            $product->set_id( $id );

            $this->update_post_meta( $product, true );
            $this->update_terms( $product, true );
            $this->update_visibility( $product, true );
            $this->update_attributes( $product, true );
            $this->handle_updated_props( $product );

            $product->save_meta_data();
            $product->apply_changes();

            $this->update_version_and_type( $product );
            $this->update_guid( $product );

            $this->clear_caches( $product );

            do_action( 'woocommerce_new_product_variation', $id, $product );
        }
    }

    /**
     * Updates an existing product.
     *
     * @since 3.0.0
     * @param WC_Product_Variation $product Product object.
     */
    public function update( &$product ) {
        $product->save_meta_data();

        if ( ! $product->get_date_created() ) {
            $product->set_date_created( time() );
        }

        $new_title = $this->generate_product_title( $product );

        if ( $product->get_name( 'edit' ) !== $new_title ) {
            $product->set_name( $new_title );
        }

        // The post parent is not a valid variable product so we should prevent this.
        if ( $product->get_parent_id( 'edit' ) && 'product' !== get_post_type( $product->get_parent_id( 'edit' ) ) ) {
            $product->set_parent_id( 0 );
        }

        $changes = $product->get_changes();

        if ( array_intersect( array( 'attributes' ), array_keys( $changes ) ) ) {
            $product->set_attribute_summary( $this->generate_attribute_summary( $product ) );
        }

        // Only update the post when the post data changes.
        if ( array_intersect( array( 'name', 'parent_id', 'status', 'menu_order', 'date_created', 'date_modified', 'attributes' ), array_keys( $changes ) ) ) {
            $post_data = array(
                'post_title'        => $product->get_name( 'edit' ),
                'post_excerpt'      => $product->get_attribute_summary( 'edit' ),
                'post_parent'       => $product->get_parent_id( 'edit' ),
                'comment_status'    => 'closed',
                'post_status'       => $product->get_status( 'edit' ) ? $product->get_status( 'edit' ) : 'publish',
                'menu_order'        => $product->get_menu_order( 'edit' ),
                'post_date'         => gmdate( 'Y-m-d H:i:s', $product->get_date_created( 'edit' )->getOffsetTimestamp() ),
                'post_date_gmt'     => gmdate( 'Y-m-d H:i:s', $product->get_date_created( 'edit' )->getTimestamp() ),
                'post_modified'     => isset( $changes['date_modified'] ) ? gmdate( 'Y-m-d H:i:s', $product->get_date_modified( 'edit' )->getOffsetTimestamp() ) : current_time( 'mysql' ),
                'post_modified_gmt' => isset( $changes['date_modified'] ) ? gmdate( 'Y-m-d H:i:s', $product->get_date_modified( 'edit' )->getTimestamp() ) : current_time( 'mysql', 1 ),
                'post_type'         => 'product_variation',
                'post_name'         => $product->get_slug( 'edit' ),
            );

            /**
             * When updating this object, to prevent infinite loops, use $wpdb
             * to update data, since wp_update_post spawns more calls to the
             * save_post action.
             *
             * This ensures hooks are fired by either WP itself (admin screen save),
             * or an update purely from CRUD.
             */
            if ( doing_action( 'save_post' ) ) {
                $GLOBALS['wpdb']->update( $GLOBALS['wpdb']->posts, $post_data, array( 'ID' => $product->get_id() ) );
                clean_post_cache( $product->get_id() );
            } else {
                wp_update_post( array_merge( array( 'ID' => $product->get_id() ), $post_data ) );
            }
            $product->read_meta_data( true ); // Refresh internal meta data, in case things were hooked into `save_post` or another WP hook.

        } else { // Only update post modified time to record this save event.
            $GLOBALS['wpdb']->update(
                $GLOBALS['wpdb']->posts,
                array(
                    'post_modified'     => current_time( 'mysql' ),
                    'post_modified_gmt' => current_time( 'mysql', 1 ),
                ),
                array(
                    'ID' => $product->get_id(),
                )
            );
            clean_post_cache( $product->get_id() );
        }

        $this->update_post_meta( $product );
        $this->update_terms( $product );
        $this->update_visibility( $product, true );
        $this->update_attributes( $product );
        $this->handle_updated_props( $product );

        $product->apply_changes();

        $this->update_version_and_type( $product );

        $this->clear_caches( $product );

        do_action( 'woocommerce_update_product_variation', $product->get_id(), $product );
    }

    /*
    |--------------------------------------------------------------------------
    | Additional Methods
    |--------------------------------------------------------------------------
    */

    /**
     * Generates a title with attribute information for a variation.
     * Products will get a title of the form "Name - Value, Value" or just "Name".
     *
     * @since 3.0.0
     * @param WC_Product $product Product object.
     * @return string
     */
    protected function generate_product_title( $product ) {
        $attributes = (array) $product->get_attributes();

        // Do not include attributes if the product has 3+ attributes.
        $should_include_attributes = count( $attributes ) < 3;

        // Do not include attributes if an attribute name has 2+ words and the
        // product has multiple attributes.
        if ( $should_include_attributes && 1 < count( $attributes ) ) {
            foreach ( $attributes as $name => $value ) {
                if ( false !== strpos( $name, '-' ) ) {
                    $should_include_attributes = false;
                    break;
                }
            }
        }

        $should_include_attributes = apply_filters( 'woocommerce_product_variation_title_include_attributes', $should_include_attributes, $product );
        $separator                 = apply_filters( 'woocommerce_product_variation_title_attributes_separator', ' - ', $product );
        $title_base                = get_post_field( 'post_title', $product->get_parent_id() );
        $title_suffix              = $should_include_attributes ? wc_get_formatted_variation( $product, true, false ) : '';

        return apply_filters( 'woocommerce_product_variation_title', $title_suffix ? $title_base . $separator . $title_suffix : $title_base, $product, $title_base, $title_suffix );
    }

    /**
     * Generates attribute summary for the variation.
     *
     * Attribute summary contains comma-delimited 'attribute_name: attribute_value' pairs for all attributes.
     *
     * @since 3.6.0
     * @param WC_Product_Variation $product Product variation to generate the attribute summary for.
     *
     * @return string
     */
    protected function generate_attribute_summary( $product ) {
        return wc_get_formatted_variation( $product, true, true );
    }

    /**
     * Make sure we store the product version (to track data changes).
     *
     * @param WC_Product $product Product object.
     * @since 3.0.0
     */
    protected function update_version_and_type( &$product ) {
        wp_set_object_terms( $product->get_id(), '', 'product_type' );
        update_post_meta( $product->get_id(), '_product_version', Constants::get_constant( 'WC_VERSION' ) );
    }

    /**
     * Read post data.
     *
     * @since 3.0.0
     * @param WC_Product_Variation $product Product object.
     * @throws WC_Data_Exception If WC_Product::set_tax_status() is called with an invalid tax status.
     */
    protected function read_product_data( &$product ) {
        $id = $product->get_id();

        $product->set_props(
            array(
                'description'       => get_post_meta( $id, '_variation_description', true ),
                'regular_price'     => get_post_meta( $id, '_regular_price', true ),
                'sale_price'        => get_post_meta( $id, '_sale_price', true ),
                'date_on_sale_from' => get_post_meta( $id, '_sale_price_dates_from', true ),
                'date_on_sale_to'   => get_post_meta( $id, '_sale_price_dates_to', true ),
                'manage_stock'      => get_post_meta( $id, '_manage_stock', true ),
                'stock_status'      => get_post_meta( $id, '_stock_status', true ),
                'shipping_class_id' => current( $this->get_term_ids( $id, 'product_shipping_class' ) ),
                'virtual'           => get_post_meta( $id, '_virtual', true ),
                'downloadable'      => get_post_meta( $id, '_downloadable', true ),
                'gallery_image_ids' => array_filter( explode( ',', get_post_meta( $id, '_product_image_gallery', true ) ) ),
                'download_limit'    => get_post_meta( $id, '_download_limit', true ),
                'download_expiry'   => get_post_meta( $id, '_download_expiry', true ),
                'image_id'          => get_post_thumbnail_id( $id ),
                'backorders'        => get_post_meta( $id, '_backorders', true ),
                'sku'               => get_post_meta( $id, '_sku', true ),
                'stock_quantity'    => get_post_meta( $id, '_stock', true ),
                'weight'            => get_post_meta( $id, '_weight', true ),
                'length'            => get_post_meta( $id, '_length', true ),
                'width'             => get_post_meta( $id, '_width', true ),
                'height'            => get_post_meta( $id, '_height', true ),
                'tax_class'         => ! metadata_exists( 'post', $id, '_tax_class' ) ? 'parent' : get_post_meta( $id, '_tax_class', true ),
            )
        );

        if ( $product->is_on_sale( 'edit' ) ) {
            $product->set_price( $product->get_sale_price( 'edit' ) );
        } else {
            $product->set_price( $product->get_regular_price( 'edit' ) );
        }

        $parent_object   = get_post( $product->get_parent_id() );
        $terms           = get_the_terms( $product->get_parent_id(), 'product_visibility' );
        $term_names      = is_array( $terms ) ? wp_list_pluck( $terms, 'name' ) : array();
        $exclude_search  = in_array( 'exclude-from-search', $term_names, true );
        $exclude_catalog = in_array( 'exclude-from-catalog', $term_names, true );

        if ( $exclude_search && $exclude_catalog ) {
            $catalog_visibility = 'hidden';
        } elseif ( $exclude_search ) {
            $catalog_visibility = 'catalog';
        } elseif ( $exclude_catalog ) {
            $catalog_visibility = 'search';
        } else {
            $catalog_visibility = 'visible';
        }

        $product->set_parent_data(
            array(
                'title'              => $parent_object ? $parent_object->post_title : '',
                'status'             => $parent_object ? $parent_object->post_status : '',
                'sku'                => get_post_meta( $product->get_parent_id(), '_sku', true ),
                'manage_stock'       => get_post_meta( $product->get_parent_id(), '_manage_stock', true ),
                'backorders'         => get_post_meta( $product->get_parent_id(), '_backorders', true ),
                'low_stock_amount'   => get_post_meta( $product->get_parent_id(), '_low_stock_amount', true ),
                'stock_quantity'     => wc_stock_amount( get_post_meta( $product->get_parent_id(), '_stock', true ) ),
                'weight'             => get_post_meta( $product->get_parent_id(), '_weight', true ),
                'length'             => get_post_meta( $product->get_parent_id(), '_length', true ),
                'width'              => get_post_meta( $product->get_parent_id(), '_width', true ),
                'height'             => get_post_meta( $product->get_parent_id(), '_height', true ),
                'tax_class'          => get_post_meta( $product->get_parent_id(), '_tax_class', true ),
                'shipping_class_id'  => absint( current( $this->get_term_ids( $product->get_parent_id(), 'product_shipping_class' ) ) ),
                'image_id'           => get_post_thumbnail_id( $product->get_parent_id() ),
                'purchase_note'      => get_post_meta( $product->get_parent_id(), '_purchase_note', true ),
                'catalog_visibility' => $catalog_visibility,
            )
        );

        // Pull data from the parent when there is no user-facing way to set props.
        $product->set_sold_individually( get_post_meta( $product->get_parent_id(), '_sold_individually', true ) );
        $product->set_tax_status( get_post_meta( $product->get_parent_id(), '_tax_status', true ) );
        $product->set_cross_sell_ids( get_post_meta( $product->get_parent_id(), '_crosssell_ids', true ) );
    }

    /**
     * For all stored terms in all taxonomies, save them to the DB.
     *
     * @since 3.0.0
     * @param WC_Product $product Product object.
     * @param bool       $force Force update. Used during create.
     */
    protected function update_terms( &$product, $force = false ) {
        $changes = $product->get_changes();

        if ( $force || array_key_exists( 'shipping_class_id', $changes ) ) {
            wp_set_post_terms( $product->get_id(), array( $product->get_shipping_class_id( 'edit' ) ), 'product_shipping_class', false );
        }
    }

    /**
     * Update visibility terms based on props.
     *
     * @since 3.0.0
     *
     * @param WC_Product $product Product object.
     * @param bool       $force Force update. Used during create.
     */
    protected function update_visibility( &$product, $force = false ) {
        $changes = $product->get_changes();

        if ( $force || array_intersect( array( 'stock_status' ), array_keys( $changes ) ) ) {
            $terms = array();

            if ( 'outofstock' === $product->get_stock_status() ) {
                $terms[] = 'outofstock';
            }

            wp_set_post_terms( $product->get_id(), $terms, 'product_visibility', false );
        }
    }

    /**
     * Update attribute meta values.
     *
     * @since 3.0.0
     * @param WC_Product $product Product object.
     * @param bool       $force Force update. Used during create.
     */
    protected function update_attributes( &$product, $force = false ) {
        $changes = $product->get_changes();

        if ( $force || array_key_exists( 'attributes', $changes ) ) {
            global $wpdb;

            $product_id             = $product->get_id();
            $attributes             = $product->get_attributes();
            $updated_attribute_keys = array();
            foreach ( $attributes as $key => $value ) {
                update_post_meta( $product_id, 'attribute_' . $key, wp_slash( $value ) );
                $updated_attribute_keys[] = 'attribute_' . $key;
            }

            // Remove old taxonomies attributes so data is kept up to date - first get attribute key names.
            $delete_attribute_keys = $wpdb->get_col(
                $wpdb->prepare(
                    // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared, WordPress.DB.PreparedSQLPlaceholders.QuotedDynamicPlaceholderGeneration
                    "SELECT meta_key FROM {$wpdb->postmeta} WHERE meta_key LIKE %s AND meta_key NOT IN ( '" . implode( "','", array_map( 'esc_sql', $updated_attribute_keys ) ) . "' ) AND post_id = %d",
                    $wpdb->esc_like( 'attribute_' ) . '%',
                    $product_id
                )
            );

            foreach ( $delete_attribute_keys as $key ) {
                delete_post_meta( $product_id, $key );
            }
        }
    }

    /**
     * Helper method that updates all the post meta for a product based on it's settings in the WC_Product class.
     *
     * @since 3.0.0
     * @param WC_Product $product Product object.
     * @param bool       $force Force update. Used during create.
     */
    public function update_post_meta( &$product, $force = false ) {
        $meta_key_to_props = array(
            '_variation_description' => 'description',
        );

        $props_to_update = $force ? $meta_key_to_props : $this->get_props_to_update( $product, $meta_key_to_props );

        foreach ( $props_to_update as $meta_key => $prop ) {
            $value   = $product->{"get_$prop"}( 'edit' );
            $updated = update_post_meta( $product->get_id(), $meta_key, $value );
            if ( $updated ) {
                $this->updated_props[] = $prop;
            }
        }

        parent::update_post_meta( $product, $force );
    }

    /**
     * Update product variation guid.
     *
     * @param WC_Product_Variation $product Product variation object.
     *
     * @since 3.6.0
     */
    protected function update_guid( $product ) {
        global $wpdb;

        $guid = home_url(
            add_query_arg(
                array(
                    'post_type' => 'product_variation',
                    'p'         => $product->get_id(),
                ),
                ''
            )
        );
        $wpdb->update( $wpdb->posts, array( 'guid' => $guid ), array( 'ID' => $product->get_id() ) );
    }
}