We have a custom app hosted in Firebase (Google’s Backend as a service). We would like to use Shopify’s authentication so the user doesn’t have to create an account in the app as well as the Shopify store (where we require accounts).
The key: I need to have some mechanism (like an API) that I can use to have Shopify authenticate a user. (Assume the customer has already created an account in the Shopify store. Account creation will be handled by the normal Shopify process.)
I can create a page in my app to ask for email / pass. Is there some way to send this info (perhaps along with some sort of token generated from a private app) to authenticate the customer? I just need Shopify to confirm whether the email / pass is correct, so I can then ‘login’ the user into my Firebase app.
Any direction / thoughts / suggestions are greatly appreciated.
PS. Firebase offers a ‘custom authentication’ option, along with email, Google+, Facebook. The custom auth option requires sending user / pass to the authentication server, which in this case, would be Shopify.
EDIT: Based on the responses, edited to clarify that I need some way to authenticate the user in Shopify. Handling the custom auth into Firebase seems like a fairly straightforward task, once I receive some sort of signal from Shopify telling me the users email / pass is valid.
3
Answers
This is a classic use case for custom Auth with Firebase. You send email/pass to your backend, authenticate with shopify, on success create a custom token with the user’s id (most likely using shopify’s user id), send it back to the client which would
signInWithCustomToken
signing in to Firebase.You should take a look to Shopify MultiPass. Although, you need Shopify Plus that is very expensive.
Why is that not a useful and simple pattern for you to use?