Automatically add the product's color as a color attribute from multiple fields with defaults and normalize the color name. [datafeedr][dfrpswc]

add_color_attribute-05.php

<?php

/**
 * Add the product's color as a color attribute for this product.
 *
 * The attribute "Color" with a slug of "color" must already exist here:
 * WordPress Admin Area > Products > Attributes.
 *
 * @param array|string $value The current value of the $attribute for this $post.
 * @param string $attribute The slug of the attribute. Examples: pa_color or pa_shoe-size
 * @param array $post An array of post data including ID, post_title, post_status, etc...
 * @param array $product An array of product data returned from the Datafeedr API.
 * @param array $set A post array for this Product Set with an array key of postmeta containing all post meta data.
 * @param string $action The action the Product Set is performing. Value are either "insert" or "update".
 *
 * @return array|string The updated attribute's value.
 */

add_filter( 'dfrpswc_filter_attribute_value', function ( $value, $attribute, $post, $product, $set, $action ) {

	if ( $attribute !== 'pa_color' ) {
		return $value;
	}

	if ( isset( $product['color'] ) ) {
		return mycode_get_color( $product['color'], $product['color'] );
	}

	if ( isset( $product['extratexttwo'] ) ) {
		return mycode_get_color( $product['extratexttwo'], $product['extratexttwo'] );
	}

	if ( isset( $product['name'] ) ) {
		return mycode_get_color( $product['name'] );
	}

	return $value;
}, 20, 6 );

/**
 * A function to normalize color attribute names.
 *
 * This returns a normalized value of a term based on a supplied
 * array of mappings of a key (desired word) mapped to an array of
 * keywords (undesired words).
 *
 * @param string $field The value to normalize.
 * @param string $default Optional. What to return if the $field value doesn't have a "normalized" value. Default: ''
 *
 * @return string Normalized attribute value.
 */
function mycode_get_color( $field, $default = '' ) {

	$map = [];

	// ++++++++++ Begin Editing Here ++++++++++

	// Use 'Red' as attribute name if product color is 'cherry' or 'rose' or 'ruby' or 'crimson' or 'scarlet'.
	$map['Red'] = [ 'cherry', 'rose', 'ruby', 'crimson', 'scarlet' ];

	// Use 'Blue' as attribute name if product color is 'navy' or 'indigo' or 'azure' or 'periwinkle' or 'lavender'.
	$map['Blue'] = [ 'navy', 'indigo', 'azure', 'periwinkle', 'lavender' ];

	// Use 'Green' as attribute name if product color is 'lime' or 'moss' or 'mint' or 'pine' or 'spring bud'.
	$map['Green'] = [ 'lime', 'moss', 'mint', 'pine', 'spring bud' ];

	// Add 'White' as attribute if product color is 'pale stone'.
	$map['White'] = [ 'pale stone' ];

	// Add 'Brown' as attribute if product color is 'khaki' or 'Caramel' or 'beige'.
	$map['Brown'] = [ 'khaki', 'Caramel', 'beige' ];

	// Add 'Grey' as attribute if product color is 'dark shadow' or 'gray' or 'silver' or 'silver/grey'.
	$map['Grey'] = [ 'dark shadow', 'gray', 'silver', 'silver/grey' ];

	// Add 'Purple' as attribute if product color is 'beetroot' or 'burgundy' or 'poisonberry' or 'mulberry'.
	$map['Purple'] = [ 'beetroot', 'burgundy', 'poisonberry', 'mulberry' ];

	// ++++++++++ Stop Editing Here ++++++++++

	$terms = [];

	foreach ( $map as $key => $keywords ) {

		if ( preg_match( '/\b' . preg_quote( $key, '/' ) . '\b/iu', $field ) ) {
			$terms[] = $key;
		}

		foreach ( $keywords as $keyword ) {
			if ( preg_match( '/\b' . preg_quote( $keyword, '/' ) . '\b/iu', $field ) ) {
				$terms[] = $key;
			}
		}
	}

	if ( ! empty( $terms ) ) {
		return implode( WC_DELIMITER, array_unique( $terms ) );
	}

	return $default;
}