Use interface to abstract all of kinds of parts about orchardcore.commerce

[infofromca]

maybe use ?

[bleroy]

Well, the design here was that this specific price provider was specialized for the price part. If you're using a different kind of part that implements its price differently, you'd build another price provider that goes with it. However, since nothing this provider does depends on anything else than IPrice, I think you're right that we could refactor this to look for any part that implements IPrice and get the price from that.

[bleroy]

Wait, no, we can't. There's no way in Orchard Core to get a part from an item without knowing their actual type. An interface won't work. So no, this is unfortunately not possible, and if you define your own implementation of IPrice, you'll have to also build a new implementation of IPriceProvider.
Please re-open if I missed something.