Gift card

As shopper i would like to buy gift card for other person. Gift cart must be delivered via email ( additional option as printed cart, nice to have qr code for identification) to grantee with printed message. Also i would like to be notified, when cart is delivered and used. In case if shop owner runs several shops i want to select shops in what shops cart may be used. As shopper i want to be notified about cart expiration , it should be before one or two weeks.

As gift card grantee i would like to use in one of the availabe shop. Each cart has the limitition where it can be used. As gift grantee i want to have ability pay with several gift cards. In cart i want to see amount payed by cart(s) and rest to pay/payed. As gift card guarantee i would like to have ability pay with gift card several times, if amount of my cart less than amount of my bill and i want to see the rest amount on cart.

As shop owner / marketologist i want to:
configure gift certificates - theme, amount , shop(s), expiration.
know the history of each card - issued, used, etc
know all valid certificates on date
know how many certificates were bought on date
know the balance, debit and credit turnover for period.
In case if gift card was used only partially need to wire it with shopper, which used this card first time

NOTE 1: Some users will accept gift card in physical stores as well, so we need mechanism to update the balance for gift cards
NOTE 2: gift cards must be registered before they are used (this is how Amazon does it currently, so we can check the validity and assign it to the customer right then)