API/https based integration to multiple Wholesale portals

Integration to multiple wholesale/supplier portals at the same time/with the same store.
feature set:
- automated stock update
- automated product update
- automated product listing/delisting
- automated price updates
- automated picture download
potentially:
- automated payment
- automated order placement

Happy to provide more detail and suggestions as this can become quite complex when trying to compare multiple wholesalers and give priorities.