Openwrt captive portal

I want openwrt captive portal
The following features must have
- User and password login
- voucher system
- Time limit each users / voucher
- Data limit each users /voucher
- Speed limit each users/voucher
- Tariff internet time price and data
- Multiple login allows/ disallows each user/voucher
- expire date set for each user/voucher
- Bulk voucher generator by time/data set expire date after login or last logout or specific time.
- Voucher generate number/symbols or both
This is all done openwrt device with external web server hosted cloud
I know few application and cloud service but i want give similar service.
For understanding you can check wiwiz.com, tanaza, etc and mypublic hotspot application worked on pc. I’m looking similar service but must be openwrt cloud based wifi management service.