learndost is coupon driven and so are any ideas if we have a third party resuable module like a cloud functions hosted on rewward.com

one for /create which takes as input percentOff, expires: once or some date, referredBy, along with that, a hidden applicable on domain which we get automatically from the user HTTP request, an optional string(taken from user, called worksFor) so it will be ?off=xx&expires=xx&referredBy=xx&worksFor=xx

one for /validate which takes the params userkey(optional) and code returns back %off if valid or return false if it doesnt exist. and if we pass &consume=1 it should be used up in DB

code generation if it generated ganga-kaveri-1234 it would be nice vs some random number as coupon code here is an example of it https://raw.githubusercontent.com/nguymin4/react-videocall/master/server/lib/haiku.js

STEPS TO BE FOLLOWED:

1. To understand the difference between Cloud firestore and Real-time-database.
2. How to import data to cloud firestore?
3. How to retrieve data from firestore by quering?
4. Cloud functions for firestore