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<?php
namespace Automattic\WooCommerce\Blocks\Utils;
/**
* Utility methods used for the Product Gallery block.
* {@internal This class and its methods are not intended for public use.}
*/
class ProductGalleryUtils {
/**
* Get all image IDs for the product.
*
* @param \WC_Product $product The product object.
* @return array An array of image IDs.
*/
public static function get_all_image_ids( $product ) {
if ( ! $product instanceof \WC_Product ) {
wc_doing_it_wrong( __FUNCTION__, __( 'Invalid product object.', 'woocommerce' ), '9.8.0' );
return array();
}
$gallery_image_ids = self::get_product_gallery_image_ids( $product );
$product_variation_image_ids = self::get_product_variation_image_ids( $product );
$all_image_ids = array_values( array_map( 'intval', array_unique( array_merge( $gallery_image_ids, $product_variation_image_ids ) ) ) );
if ( empty( $all_image_ids ) ) {
return array();
}
return $all_image_ids;
}
/**
* Get the product gallery image data.
*
* @param \WC_Product $product The product object to retrieve the gallery images for.
* @param string $size The size of the image to retrieve.
* @return array An array of image data for the product gallery.
*/
public static function get_product_gallery_image_data( $product, $size ) {
$all_image_ids = self::get_all_image_ids( $product );
return self::get_image_src_data( $all_image_ids, $size );
}
/**
* Get the product gallery image count.
*
* @param \WC_Product $product The product object to retrieve the gallery images for.
* @return int The number of images in the product gallery.
*/
public static function get_product_gallery_image_count( $product ) {
$all_image_ids = self::get_all_image_ids( $product );
return count( $all_image_ids );
}
/**
* Get the image source data.
*
* @param array $image_ids The image IDs to retrieve the source data for.
* @param string $size The size of the image to retrieve.
* @return array An array of image source data.
*/
public static function get_image_src_data( $image_ids, $size ) {
$image_src_data = array();
foreach ( $image_ids as $image_id ) {
if ( 0 === $image_id ) {
// Handle placeholder image.
$image_src_data[] = array(
'id' => 0,
'src' => wc_placeholder_img_src(),
'srcset' => '',
'sizes' => '',
);
continue;
}
// Get the image source.
$full_src = wp_get_attachment_image_src( $image_id, $size );
// Get srcset and sizes.
$srcset = wp_get_attachment_image_srcset( $image_id, $size );
$sizes = wp_get_attachment_image_sizes( $image_id, $size );
$image_src_data[] = array(
'id' => $image_id,
'src' => $full_src ? $full_src[0] : '',
'srcset' => $srcset ? $srcset : '',
'sizes' => $sizes ? $sizes : '',
);
}
return $image_src_data;
}
/**
* Get the product variation image data.
*
* @param \WC_Product $product The product object to retrieve the variation images for.
* @return array An array of image data for the product variation images.
*/
public static function get_product_variation_image_ids( $product ) {
$variation_image_ids = array();
if ( ! $product instanceof \WC_Product ) {
wc_doing_it_wrong( __FUNCTION__, __( 'Invalid product object.', 'woocommerce' ), '9.8.0' );
return $variation_image_ids;
}
try {
if ( $product->is_type( 'variable' ) ) {
$variations = $product->get_children();
foreach ( $variations as $variation_id ) {
$variation = wc_get_product( $variation_id );
if ( $variation ) {
$variation_image_id = $variation->get_image_id();
if ( ! empty( $variation_image_id ) && ! in_array( strval( $variation_image_id ), $variation_image_ids, true ) ) {
$variation_image_ids[] = strval( $variation_image_id );
}
}
}
}
} catch ( \Exception $e ) {
// Log the error but continue execution.
error_log( 'Error getting product variation image IDs: ' . $e->getMessage() );
}
return $variation_image_ids;
}
/**
* Get the product gallery image IDs.
*
* @param \WC_Product $product The product object to retrieve the gallery images for.
* @return array An array of unique image IDs for the product gallery.
*/
public static function get_product_gallery_image_ids( $product ) {
$product_image_ids = array();
// Main product featured image.
$featured_image_id = $product->get_image_id();
if ( $featured_image_id ) {
$product_image_ids[] = $featured_image_id;
}
// All other product gallery images.
$product_gallery_image_ids = $product->get_gallery_image_ids();
if ( ! empty( $product_gallery_image_ids ) ) {
// We don't want to show the same image twice, so we have to remove the featured image from the gallery if it's there.
$product_image_ids = array_unique( array_merge( $product_image_ids, $product_gallery_image_ids ) );
}
// If the Product image is not set and there are no gallery images, we need to set it to a placeholder image.
if ( ! $featured_image_id && empty( $product_gallery_image_ids ) ) {
$product_image_ids[] = '0';
}
foreach ( $product_image_ids as $key => $image_id ) {
$product_image_ids[ $key ] = strval( $image_id );
}
// Reindex array.
$product_image_ids = array_values( $product_image_ids );
return $product_image_ids;
}
}