ActionCodeOperation mapping fails due to incorrect requestType casing in `ActionCodeInfo`

[stefangerard]

Description

In FirebaseAuth/Sources/Swift/ActionCode/ActionCodeInfo.swift, the method actionCodeOperation(forRequestType:) uses all-uppercase string literals (e.g. "PASSWORD_RESET", "VERIFY_EMAIL") to match against the request type string received from the server.

However, Firebase uses camelCase for the mode parameter in action links, as documented here:
https://firebase.google.com/docs/auth/custom-email-handler#create_the_email_action_handler_page

Because of this mismatch, the method always returns .unknown.

Code Reference

https://github.com/firebase/firebase-ios-sdk/blob/HEAD/FirebaseAuth/Sources/Swift/ActionCode/ActionCodeInfo.swift#L43-L53

class func actionCodeOperation(forRequestType requestType: String?) -> ActionCodeOperation {
  switch requestType {
  case "PASSWORD_RESET": return .passwordReset
  case "VERIFY_EMAIL": return .verifyEmail
  case "RECOVER_EMAIL": return .recoverEmail
  case "EMAIL_SIGNIN": return .emailLink
  case "VERIFY_AND_CHANGE_EMAIL": return .verifyAndChangeEmail
  case "REVERT_SECOND_FACTOR_ADDITION": return .revertSecondFactorAddition
  default: return .unknown
  }
}

Suggested Fix

Update the switch statement to use camelCase keys to match the values provided by Firebase in the mode parameter.

switch requestType {
case "resetPassword": return .passwordReset
case "verifyEmail": return .verifyEmail
case "recoverEmail": return .recoverEmail
case "signIn": return .emailLink
case "verifyAndChangeEmail": return .verifyAndChangeEmail
case "revertSecondFactorAddition": return .revertSecondFactorAddition
default: return .unknown
}

Reproducing the issue

1. Trigger any Firebase action that sends an email with an action link (e.g., password reset).
2. Open the link and inspect the mode parameter – it will be camelCase (e.g., mode=resetPassword).
3. When passed to ActionCodeURL, the internal mapping in ActionCodeInfo returns .unknown.

Expected behavior:
ActionCodeOperation should correctly reflect the action specified in the mode parameter.

Actual behavior:
ActionCodeOperation == .unknown

Firebase SDK Version

11.11.0

Xcode Version

16.3

Installation Method

Swift Package Manager

Firebase Product(s)

Authentication

Targeted Platforms

All

Relevant Log Output

If using Swift Package Manager, the project's Package.resolved

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If using CocoaPods, the project's Podfile.lock

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[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[rizafran]

Thanks for the report, @stefangerard. The fix has been merged and will be included in the next release.