`ExperimentUserBuilder` doesn't seem to parse user properties correctly

[glenngijsberts]

When fetching the feature flags/experiments in our Swift app we use the ExperimentUserBuilder function from the SDK to build up the experiment user, passing user properties like so:

func createUserContext(_ userInfo: AnalyticsUserProfile) async -> ExperimentUser? {

  ...
  
  return ExperimentUserBuilder()
      .userId(userInfo?.id)
      .deviceId(analytics.anonymousId)
      .userProperties([
          "userId": userInfo?.id as Any,
          "isEmployee": userInfo?.isEmployee ?? false,
          "platform": deviceContext.os,
          "mobileAppOsVersion": deviceContext.osVersion,
          "mobileAppVersion": deviceContext.appVersion,
          "mobileAppBuildNumber": deviceContext.buildNumber,
          "countryCode": Locale.current.language.languageCode?.identifier as Any,
      ])
      .build()

...

and then pass this experiment user to the SDK to start Amplitude like so:

    public func start(_ user: AnalyticsUserProfile?) async throws {
        let experimentUser = await createUserContext(user)

        try await withCheckedThrowingContinuation { continuation in
            amplitude.start(experimentUser) { error in
                continuation.resume(with: .init {
                    if let error { throw error }
                })
            }
        }
    }

Pretty straight forward I would say so far, but I was running into issues where my feature flags didn't work based on for example the isEmployee property, which is a simple true/false value.

Looking into what I pass, and then looking into the ExperimentUser I get I found some issues with the userProperties on this user and the ones that are probably used to determine which flags are enabled?

For example, values that I pass from the analytics user:

...
    - isNewProfile : false
    - isEmployee : true
    ▿ city : Optional<String>
      - some : ""
    ▿ countryCode : Optional<String>
      - some : "NL"
    ▿ isPhoneVerified : Optional<Bool>
      - some : true
...

Values I get from the experiment user' user properties:

([String : String]?) 7 key/value pairs {
  [0] = (key = "countryCode", value = <uninitialized>)
  [1] = (key = "isEmployee", value = <uninitialized>)
  [2] = (key = "mobileAppVersion", value = unable to read data)
  [3] = (key = "mobileAppBuildNumber", value = <uninitialized>)
  [4] = (key = "mobileAppOsVersion", value = Swift.String @ 0x00006000435a6850)
  [5] = (key = "platform", value = <uninitialized>)
  [6] = (key = "userId", value = <uninitialized>)
}

This doesn't seems correct to me. FWIW, it does work when I use local evaluation for my feature flags, but that doesn't seem right to me?

[tyiuhc]

@glenngijsberts, thanks for raising this issue. To clarify, are you checking properties via user.userProperties or user.getUserProperties()?

For context:

• user.userProperties is deprecated and only stores String values.
• user.getUserProperties() returns the actual typed values used for feature flag evaluation, where isEmployee: true should appear a Boolean.

[bgiori]

Closing due to inactivity.