I'm trying to create a new shipping provider and a plugin via the Commerce documentation "Shipping gateways and providers" (link at the very bottom) and have some feedback and questions regarding the documentation:
1. First, it's unknown how to use these code snippets. Would be nice to have a whole method or even class included in the code example.2. "Remember to register the class with the service container as a service of IShippingPlugin." - It would be nice to have an example (interface for registration and suggested lifetime of the plugin).3. "ShippingManager.GetShippingMethodCases(methodId, shippingAddress.CountryCode ..." < where is the shippingAddress coming from? Now, I see it might be a shipment.ShippingAddress, but it's not explicitly said.4. "Accessing shipping provider information" > What should happen after retrieving "cases"? It's unclear to the reader. Also, it's unknown how this might be populated.5. "For information about using this DataTable, see the WeightJurisdictionGateway.cs GetRate() implementation." > Well, it's still unclear what to do now. Should readers google that class (cannot find the source code online) or decompile sources and see decompiled and rather hard-to-read code?6. "Copy the .dlls associated with the project where the shipping gateway is implemented to the bin folders of the Commerce Manager and public websites." > It's totally unknown what's that bin folder and where to find it (is it bin/[debug|release]?). I'm using .NET 6 (non-IIS) - where should this .dll copy to? It would be also nice to see if the app should be started if the DLL file has been added during a runtime.
My general feeling about that page is that it provides different code snippets, but the general overview is unknown. It's very difficult to follow these steps in order to create own shipping plugin.
Documentation URL: https://docs.developers.optimizely.com/commerce/v14.0.0-commerce-cloud/docs/shipping-gateways-and-providers
4,5 and 6. It seems to me based on your questions, you may not need to create a custom shipping provider. You simply need to create a shipping method via the admin interface. The documentation incorrectly refers to Commerce Manager which is Commerce 13 and below. In Commerce 14 everything as been moved to edit mode.
Apologies if I've misunderstood your post and you do need to write an external shipping provider with custom logic, let me know and I'll try to help you further.
Thank you for the answer, Surjit.
A.d. 1: Yes, but it has some flaws, ambiguities and missing pieces :)
A.d. 2: It's still not very clear to me how to register that plugin correctly. When dealing with, let's say, ShippingManager dependency, which lifetime would be more suitable for the shipping plugin? Or, how that should be registered via DI container for more than one plugin? My point is that has not been properly covered in the documentation.
A.d. 3: I see. However, that assumption has not been covered in the Documentation. shippingAddress comes from nowhere and it would be more convenient if a proper assignment (e.g. from shipment) would be included in that piece of code.
For 4-6: That's fine, I was able to find the panel and all the missing via trial and error. However, this should be included in the documentation.
Register it directly adding [ServiceConfiguration(ServiceType = typeof(IShippingPlugin))] to the top of your class.
Yes, this is what I'm talking about - that simple information about registration should be added to the Documentation. Plus, information about more complex scenarios would be nice to have as well.