Setting up a store that uses authorize.net as the payment method and it looks like the solidus_gateway extension ported from spree supported this, but is deprecated. Per the recommendation there, I was attempting to build a gem by referencing some of the existing ones (solidus_affirm and solidus_braintree_paypal) but I am having a lot of trouble understanding the interactions between Solidus, ActiveMerchant, and the Authorize.net ruby SDK. For context, I am very new to Ruby and Rails, so still trying to grasp how all this works. Are there any recommendations or existing solutions already built for authorize.net that I may have missed? Would it be a terrible idea to try adding solidus_gateway to this store and trying to get that working with authorize.net?

There some information in the edge guides and you should be able to use the solidus_gateway extension as a reference as well, though you might consider integrating with it using the official SDK rather than ActiveMerchant.

Thank you for the reference docks. Any reason to go with the official SDK as opposed to ActiveMerchant?