WooCommerce. applying an after-tax coupon on the total order amount?

Question

WordPress

How can I get attached to the calculation of the full amount, namely the tax after applying a discount coupon on Woo.
Actually, after version 2.3, this feature was removed, since it is prohibited in the USA
https://wp-kama.ru/function/WC_Legacy_Cart::get_di...
https://woocommerce.wordpress.com/2014/12/12/ upcom...
Woo experts, what's the best way to recalculate?
as I understand it, you need to make a function similar to get_discounts_before_tax(); and call it in checkout and cart through filters?
P.S.S. As a result, it should be so that if we allow 1000 rubles for the entire order, there is a 10% tax, and the coupon comes with a discount of 200 rubles, the result was (1000 + 10%) -200 = 900 The coupon subtracts from the most recent total amount, and not the pre-total ( not (1000-200) + 10% = 880...)
P.S.S. There was only one similar question, and that one is remote, but not suitable.
How to make the coupon discount in woocommerce add up with the product discount?