This action runs when a payment is marked as complete.
do_action( 'rpress_complete_purchase', $payment_id );
Simple example
function pw_rpress_on_complete_purchase( $payment_id ) {
// Basic payment meta
$payment_meta = rpress_get_payment_meta( $payment_id );
// Cart details
$cart_items = rpress_get_payment_meta_cart_details( $payment_id );
// do something with payment data here
}
add_action( 'rpress_complete_purchase', 'pw_rpress_on_complete_purchase' );