Unity pay module

It is to use unity to realize the function similar to pc shareware, request to read fields (uuid,type,time,orderid,gameid) from URL json, verify whether user purchase and purchase type, if user did not purchase, directly call the purchase function, after successful purchase report fields (uuid,type,time, orderid,gameid), the user starts the game when timing, after the time arrives pop-up window to choose the purchase time (month, quarter, year), pay to continue the game, at the same time verify that the purchase type expires also pop-up window to choose the purchase time.
uuid is the mobile hardware id, type is the purchase type (month, quarter, year), orderid is the order id, gameid is the game type id

The purchase function can just return true for the demo state