feat: Deprecate Firebase Dynamic Links / Remove Unnecessary actionCodeSettings

[kitayoshi]

Plugin(s)

• Analytics
• App
• App Check
• Authentication
• Crashlytics
• Cloud Firestore
• Cloud Functions
• Cloud Messaging
• Cloud Storage
• Performance
• Remote Config

Current problem

First of all, thank you for your great effort!

I am integrating verifyBeforeUpdateEmail() where I found that actionCodeSettings is needed. I don't need the dynamic link feature that to be opened in the application, so I just filled in the url and set handleCodeInApp: false.

However, I still get the DYNAMIC_LINK_NOT_ACTIVATED: FDL domain is not configured error.

After searching, I found that the Firebase Dynamic Links feature is deprecated and the native SDK provides new interface support without dynamic links, specifically for email verification and similar use cases.

Reference: https://firebase.google.com/docs/auth/ios/email-link-migration

Preferred solution

• Maybe make actionCodeSettings optional like sendEmailVerification() since it may not be necessary before dynamic links are deprecated.
• Upgrade Firebase native SDK for iOS to 11.8.0+

Alternative options

No response

Additional context

No response

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• I have attached links to possibly related issues and discussions.

[robingenz]

Feel free to create a PR for this. Just make sure that it's not breaking change.

[kitayoshi]

@robingenz Sorry I am not familiar with the native part, so I am afraid of working on that.

But from my point of view, the easier solution is to make the actionCodeSettings parameter optional. Only two methods, sendSignInLinkToEmail() and verifyBeforeUpdateEmail(), mark it as required, which I think is not needed. I will dig into it a little.

[kitayoshi]

@robingenz I have created a PR #832 making the actionCodeSettings optional.