Variable products change button to add-to-cart in shop loops

Changes the Select Options buttons to Add to Cart for all variable products in a specific category.

add_filter( 'woocommerce_loop_add_to_cart_link', function( $link, $product ) {

	// Categories To Affect
	$categories = [
		'Category One',
		'Category Two',
		'Category Three',
	];

	// Limit To Variable Products In Category
	if(
		$product->product_type != 'variable'
		|| ! has_term( $categories, 'product_cat', $product->get_id() )
	) {
		return $link;
	}

	// Limit To Single Variations
	if( sizeof( $product->get_available_variations() ) > 1 ) {
		return $link;
	}

	// New Link
	return sprintf(
		'
			<a href="?add-to-cart=%d"
				data-quantity="1"
				data-product_id="%d"
				data-product_sku="%s"
				class="button product_type_simple add_to_cart_button ajax_add_to_cart add-to-cart"
				aria-label="Add “%s” to your cart"
				rel="nofollow">%s</a>
		',
		$product->get_id(),
		$product->get_id(),
		$product->get_sku(),
		$product->get_title(),
		__( 'Add to Cart', 'woocommerce' )
	);

}, 10, 2 );
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