Redirect Woocommerce Checkout Payment Page before login to Auth0

Known:

Payment Email had this link :

https://staging.a2fahmi.com/checkout/order-pay/286816/?pay_for_order=true&key=wc_order_PgmKQfGnVVzTu

Wanted:

I want when customer have buy some stuff then checkout and logout then he clicked payment email then he redirect to Auth0 login

Problem:

When customer clicked the payment email then he still redirected to Woocommerce login form

Question:

How to redirect the woocommerce checkout payment page login to Auth0 login … ?

Answer:

Add this code inside your themes function.php:

if(!is_user_logged_in()){
   if ( isset($_GET['pay_for_order'] ) ) {
      $current_url = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
				
      wp_redirect( wp_login_url( $current_url) ); 
      exit;
			  
     }
}