Replace [Buy product] button with [More details] button for WooCommerce External/Affiliate links

replace-buy-button-with-details-button.php

add_action( 'woocommerce_before_shop_loop_item', function () {

	global $product;

	if ( 'external' == $product->get_type() ) {
		add_action( 'woocommerce_after_shop_loop_item', 'mycode_more_details_button' );
	}

} );

add_action( 'woocommerce_before_shop_loop_item', function () {

	global $product;

	if ( 'external' == $product->get_type() ) {
		remove_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart' );
	}

} );

add_action( 'woocommerce_after_shop_loop_item', function () {
	add_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart' );
	remove_action( 'woocommerce_after_shop_loop_item', 'mycode_more_details_button' );
}, 20 );

function mycode_more_details_button() {

	global $product;

	$url   = $product->get_permalink();
	$text  = __( 'More details', 'mycode' );
	$title = sprintf( __( 'View more details about %s', 'mycode' ), $product->get_name() );
	$class = sprintf( 'button add_to_cart_button product_type_%s', $product->get_type() );

	$format = '<a href="%1$s" title="%2$s" class="%3$s">%4$s</a>';

	printf( $format, esc_url( $url ), esc_attr( $title ), esc_attr( $class ), esc_html( $text ) );
}