After a successful payment, What hook is triggered in Woocommerce

Question

In Woocommerce, to send sms payment information to the customer, I need to activate a trigger after a successful payment.

But I didn\'t find any hook do it

This

Answer 1

 add_action('woocommerce_payment_complete','this_is_custom_function');
 function this_is_custom_function($order_id){
        $order = new WC_Order( $order_id );
 }

use "woocommerce_payment_complete" hook