I need the following modules to go on an ecomerce site underdevelopemt

1, Voucher
Module for acepting vouchers, the vouchers will be pre printed and sold, as each voucher used it will be deleted from the system, a log of where the voucher was sold to which store will also be created

2, Coupon
Module for acepting coupon codes, coupon codes module will also create and manage coupons in admin, valid from to, define rules, coupon for new customers, existing customers, mutiple sites etc