discount in item price and tax amount

Our client needs to implement excise tax when creating Sale order , which will be 100% and discount on it

 Example: 

Item Price = 5000

Excise tax = 5000 

Total Amount : 10000

Discount 2% : 200

After discount : 9800

15% vat on 9800 = 1470

and the journal will be as below: 

debit / receivables 11270

Credit / Revenue 5000 

Credit /Excise Tax 5000

Debit / Discount : 200

Credit / VAT 1470

How it can be implemented?