ZHOPA

GoogleFitAnthropometricGateway.kt

override fun getAntropometricData(): Single<AnthropometricModel> = Single.create { emitter ->
        val weightDataType = DataType.TYPE_WEIGHT
        val heightDataType = DataType.TYPE_HEIGHT


        val weightSubscription = Fitness.getRecordingClient(context, account)
            .subscribe(weightDataType)
        Tasks.await(weightSubscription)

        val heightSubscription = Fitness.getRecordingClient(context, account)
            .subscribe(heightDataType)
        Tasks.await(heightSubscription)

        val heightRequest = DataReadRequest.Builder()
            .read(heightDataType)
            .setTimeRange(1, Calendar.getInstance().timeInMillis, TimeUnit.MILLISECONDS)
            .setLimit(1)
            .build()

        val weightRequest = DataReadRequest.Builder()
            .read(weightDataType)
            .setTimeRange(1, Calendar.getInstance().timeInMillis, TimeUnit.MILLISECONDS)
            .setLimit(1)
            .build()

        val historyClient = Fitness.getHistoryClient(context, account)

        val heightRequestTask = historyClient.readData(heightRequest)
        val heightDataSets = Tasks.await(heightRequestTask).dataSets

        val weightRequestTask = historyClient.readData(weightRequest)
        val weightDataSets = Tasks.await(weightRequestTask).dataSets

        val lastHeightDataSet = heightDataSets?.lastOrNull()
        val lastWeightDataSet = weightDataSets?.lastOrNull()

        val lastHeightDataPoint = lastHeightDataSet?.dataPoints?.lastOrNull()
        val lastWeightDataPoint = lastWeightDataSet?.dataPoints?.lastOrNull()

        val height = lastHeightDataPoint?.getValue(Field.FIELD_HEIGHT)?.asFloat()
        val weight = lastWeightDataPoint?.getValue(Field.FIELD_WEIGHT)?.asFloat()


        val person = getPeopleService(account).people()
            .get("people/me")
            .setPersonFields("genders")
            .execute()

        val genderString = person?.genders?.firstOrNull()?.value
        val gender = when (genderString) {
            "male" -> Gender.MALE
            "female" -> Gender.FEMALE
            "other" -> Gender.OTHER
            else -> Gender.UNKNOWN
        }

        val result = AnthropometricModel(weight, height, gender)
        emitter.onSuccess(result)
    }

    private fun getPeopleService(googleAccount: GoogleSignInAccount): PeopleService {
        val account = Account(googleAccount.email, "com.google")

        val credential = GoogleAccountCredential.usingOAuth2(context, listOf("https://www.googleapis.com/auth/user.birthday.read"))
        credential.selectedAccount = account

        val httpTransport = AndroidHttp.newCompatibleTransport()
        val jsonFactory = GsonFactory.getDefaultInstance()

        return PeopleService.Builder(httpTransport, jsonFactory, credential) // TODO Dependency injection
            .setApplicationName("Google Sign In") // TODO Application name
            .build()
    }