generate cupon code auto send

Is it possibile or will be to do that:

when client buys something lets say worth 100$, i want to give him option to chose in cart or checkout: to get 10% for cart total amout instatly on checkout, or get 10% worth coupon code, it would be 10$ to spend for 6 months, without getting 10% discout on checkout.
Option for client to chose.

Or if it is not possible, option 2:
still same order: 100$. 10% discout total – 5% checkout, 5$ in coupon
Let’s say client gets discout 5% on checkout, and instatly plugin generate 5$ worth cupun code and send it to client email on when place order, or when pays for it..