Creating System Gift

Adapting the current system, fixed to remove the counter to accept real discount codes.
Page that will write code and made off with the option of full value or%.
Number of times that this coupon can be used (this may be used for campaigns or just 1 customer vip)
This discount is taken off the total purchase price and not only for a specific product.
In order to be recorded which coupon was used, and discount applied.
Show off the cart, and order confirmation.
OBS include this in the email order confirmation.
To pay with PayPal, the discount amount will be divided into the items before sending the pagseguo because they do not have a specific field for this, and do not accept negative values.