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Firebase auth + revenue cat - customer flow

  • 7 December 2023
  • 2 replies
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I’ve successfully, it seems, integrate revenue cat with my firebase auth backend. Now I’m wondering what is the recommended customer journey in terms of what they do first? 

Should I ensure that my users first authenticate with firebase, before allowing them to purchase an in-app subscription?

What would happen if they first purchased the subscription and then authenticated on firebase after?

Thanks for any help or suggestions.

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Best answer by cody 11 December 2023, 17:04

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Hey @grin_phi!

From RevenueCat’s perspective, we’ll always track purchases once our SDK is configured, either with your configured user ID or with a random anonymous ID. If you don’t want to have anonymous IDs, I’d recommend first authenticating with Firebase, and passing that identifier into RevenueCat’s SDK during configure or `login`.

Generally, it will be up to your personal preference, but you can read more about user identifiers here: https://www.revenuecat.com/docs/user-ids

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Thanks @cody - appreciate the reply!

So, I think I’m doing what you suggest as a result of integrating Firebase with Revenue Cat. In DidFinishLaunchingWithOptions I’ve got:
 

Purchases.configure(withAPIKey: "<my_api_key>")
Purchases.shared.delegate = self

FirebaseApp.configure()

Auth.auth().addStateDidChangeListener { (auth, user) in

if let uid = user?.uid {

// identify Purchases SDK with new Firebase user
Purchases.shared.logIn(uid, completion: { (info, created, error) in
if let error {
print("Sign in error: \(error.localizedDescription)")
} else {
print("User \(uid) signed in")
}
})
}
}

 

Which I feel is passing the firebase uid to revene cat. 

Does it look like its doing that to you? 

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