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PHP 8.1.34
Preview: ProductGalleryUtils.php Size: 10.82 KB
/home2/astrociv/www/rudraraksham.com/wp-content/plugins/woocommerce/src/Blocks/Utils/ProductGalleryUtils.php
<?php
namespace Automattic\WooCommerce\Blocks\Utils;

use Automattic\WooCommerce\Internal\VariationGallery\Package as VariationGalleryPackage;

/**
 * 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, $product->get_title() );
	}

	/**
	 * 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.
	 * @param string $product_title The title of the product used for alt fallback.
	 * @return array An array of image source data.
	 */
	public static function get_image_src_data( $image_ids, $size, $product_title = '' ) {
		$image_src_data = array();

		foreach ( $image_ids as $index => $image_id ) {
			if ( 0 === $image_id ) {
				// Handle placeholder image.
				$image_src_data[] = array(
					'id'     => 0,
					'src'    => wc_placeholder_img_src(),
					'srcset' => '',
					'sizes'  => '',
					'alt'    => '',
				);
				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 );
			$alt    = get_post_meta( $image_id, '_wp_attachment_image_alt', true );

			$image_src_data[] = array(
				'id'     => $image_id,
				'src'    => $full_src ? $full_src[0] : '',
				'srcset' => $srcset ? $srcset : '',
				'sizes'  => $sizes ? $sizes : '',
				'alt'    => $alt ? $alt : sprintf(
					/* translators: 1: Product title 2: Image number */
					__( '%1$s - Image %2$d', 'woocommerce' ),
					$product_title,
					$index + 1
				),
			);
		}

		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' ) ) {
				$variation_gallery_data = self::get_product_variation_gallery_data( $product );

				foreach ( $variation_gallery_data as $variation_data ) {
					$variation_image_ids = array_merge( $variation_image_ids, $variation_data['image_ids'] );
				}
			}
		} catch ( \Exception $e ) {
			// Log the error but continue execution.
			error_log( 'Error getting product variation image IDs: ' . $e->getMessage() );
		}

		$unique_int_ids = array_unique( array_map( 'intval', $variation_image_ids ) );

		return array_values( array_map( 'strval', $unique_int_ids ) );
	}

	/**
	 * Get variation gallery data keyed by variation ID.
	 *
	 * @param \WC_Product $product The product object to retrieve variation gallery data for.
	 * @return array<int, array<string, mixed>> Variation gallery data.
	 */
	public static function get_product_variation_gallery_data( $product ) {
		$variation_gallery_data = array();

		if ( ! $product instanceof \WC_Product ) {
			wc_doing_it_wrong( __FUNCTION__, __( 'Invalid product object.', 'woocommerce' ), '10.8.0' );
			return $variation_gallery_data;
		}

		if ( ! $product->is_type( 'variable' ) ) {
			return $variation_gallery_data;
		}

		$variations = $product->get_children();
		if ( ! empty( $variations ) ) {
			// Bulk-load posts + postmeta into WP's object cache.
			_prime_post_caches( $variations );
		}

		// 0 is placeholder image ID.
		$parent_featured_id = 0;
		$product_image_id   = (int) $product->get_image_id();
		if ( $product_image_id && wp_attachment_is_image( $product_image_id ) ) {
			$parent_featured_id = $product_image_id;
		}

		$parent_gallery_ids    = array_map( 'intval', $product->get_gallery_image_ids() );
		$parent_gallery_ids    = array_filter( $parent_gallery_ids, 'wp_attachment_is_image' );
		$parent_gallery_extras = array_values( array_diff( $parent_gallery_ids, array( $parent_featured_id ) ) );

		foreach ( $variations as $variation_id ) {
			$variation_id = (int) $variation_id;
			$entry        = self::build_variation_gallery_entry( $variation_id, $parent_featured_id, $parent_gallery_extras );

			if ( null !== $entry ) {
				$variation_gallery_data[ $variation_id ] = $entry;
			}
		}

		return $variation_gallery_data;
	}

	/**
	 * Build the gallery payload for a single variation, or null when the
	 * post isn't a real variation.
	 *
	 * Decision tree (variation chosen):
	 * - no variation images → parent featured + parent gallery
	 * - own featured only → variation featured + parent gallery extras
	 * - own featured + gallery (flag on) → variation images only
	 * - gallery only, no own featured (potential AVI shape) → parent featured + variation gallery
	 *
	 * @param int   $variation_id          Variation post ID.
	 * @param int   $parent_featured_id    Parent product's featured image ID (0 if missing/invalid).
	 * @param int[] $parent_gallery_extras Parent gallery image IDs, with the featured filtered out.
	 * @return array<string, mixed>|null
	 */
	private static function build_variation_gallery_entry( int $variation_id, int $parent_featured_id, array $parent_gallery_extras ): ?array {
		$variation = wc_get_product( $variation_id );

		if ( ! $variation instanceof \WC_Product_Variation ) {
			return null;
		}

		$featured_id    = (int) $variation->get_image_id();
		$featured_valid = $featured_id && wp_attachment_is_image( $featured_id );

		$variation_gallery_ids = array();
		if ( VariationGalleryPackage::is_enabled() ) {
			$variation_gallery_ids = array_map( 'intval', $variation->get_gallery_image_ids() );
			$variation_gallery_ids = array_filter( $variation_gallery_ids, 'wp_attachment_is_image' );
			$variation_gallery_ids = array_values( $variation_gallery_ids );
		}

		// No images from variation - full parent fallback.
		if ( ! $featured_valid && empty( $variation_gallery_ids ) ) {
			$parent_image_ids = array_values(
				array_filter( array_merge( array( $parent_featured_id ), $parent_gallery_extras ) )
			);

			if ( empty( $parent_image_ids ) ) {
				return array(
					'image_id'  => 0,
					'image_ids' => array( 0 ),
				);
			}

			return array(
				'image_id'  => $parent_image_ids[0],
				'image_ids' => $parent_image_ids,
			);
		}

		// Variation has featured image and gallery - full variation gallery.
		if ( ! empty( $variation_gallery_ids ) ) {
			$featured  = $featured_valid ? $featured_id : $variation_gallery_ids[0];
			$image_ids = array_values(
				array_unique( array_merge( array( $featured ), $variation_gallery_ids ) )
			);

			return array(
				'image_id'  => $featured,
				'image_ids' => $image_ids,
			);
		}

		// Variation has only featured image - variation featured and parent gallery.
		$image_ids = array_values(
			array_unique( array_merge( array( $featured_id ), $parent_gallery_extras ) )
		);

		return array(
			'image_id'  => $featured_id,
			'image_ids' => $image_ids,
		);
	}

	/**
	 * Get all image IDs relevant to a variation gallery.
	 *
	 * @param \WC_Product_Variation $variation The variation object.
	 * @return array<int> Variation image IDs.
	 */
	public static function get_variation_gallery_image_ids( \WC_Product_Variation $variation ) {
		$image_ids          = array();
		$variation_image_id = (int) $variation->get_image_id();
		$gallery_image_ids  = array_map( 'intval', $variation->get_gallery_image_ids() );

		if ( $variation_image_id ) {
			$image_ids[] = $variation_image_id;
		}

		if ( ! empty( $gallery_image_ids ) ) {
			$image_ids = array_merge( $image_ids, $gallery_image_ids );
		}

		// Filter out missing/invalid attachments to avoid rendering phantom
		// empty `<li>` wrappers that the visibility watch can't manage.
		$image_ids = array_filter(
			$image_ids,
			function ( $id ) {
				return $id > 0 && wp_attachment_is_image( $id );
			}
		);

		return array_values( array_unique( $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;
	}
}

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