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

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', 'mycode_add_color_attribute', 20, 6 );
function mycode_add_color_attribute( $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;
}

/**
 * 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 = array();

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

	// Use "Red" as attribute name if product color is "cherry" or "rose" or "ruby" or "crimson" or "scarlet".
	$map["Red"] = array( "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"] = array( "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"] = array( "lime", "moss", "mint", "pine", "spring bud" );

	// Add "White" as attribute if product color is "pale stone".
	$map["White"] = array( "pale stone" );

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

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

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

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

	$terms = array();

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

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

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

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

	return $default;
}