SmsRetrieverUserConsentBroadcast.kt

@Composable
fun SmsRetrieverUserConsentBroadcast(
    smsCodeLength: Int = SMS_CODE_LENGTH,
    onSmsReceived: (message: String, code: String) -> Unit,
) {
    val context = LocalContext.current

    var shouldRegisterReceiver by remember { mutableStateOf(false) }

    LaunchedEffect(Unit) {
        Timber.d("Initializing Sms Retriever client")
        SmsRetriever.getClient(context)
            .startSmsUserConsent(null)
            .addOnSuccessListener {
                Timber.d("SmsRetriever started successfully")
                shouldRegisterReceiver = true
            }
    }

    val launcher = rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult()) {
        if (it?.resultCode == Activity.RESULT_OK && it.data != null) {
            val message: String? = it.data!!.getStringExtra(SmsRetriever.EXTRA_SMS_MESSAGE)
            message?.let {
                Timber.d("Sms received: $message")
                val verificationCode = getVerificationCodeFromSms(message, smsCodeLength)
                Timber.d("Verification code parsed: $verificationCode")

                onSmsReceived(message, verificationCode)
            }
            shouldRegisterReceiver = false
        } else {
            Timber.d("Consent denied. User can type OTC manually.")
        }
    }

    if (shouldRegisterReceiver) {
        SystemBroadcastReceiver(
            systemAction = SmsRetriever.SMS_RETRIEVED_ACTION,
            broadCastPermission = SmsRetriever.SEND_PERMISSION,
        ) { intent ->
            if (intent != null && SmsRetriever.SMS_RETRIEVED_ACTION == intent.action) {
                val extras = intent.extras

                val smsRetrieverStatus = extras?.get(SmsRetriever.EXTRA_STATUS) as Status
                when (smsRetrieverStatus.statusCode) {
                    CommonStatusCodes.SUCCESS -> {
                        // Get consent intent
                        val consentIntent = extras.getParcelable<Intent>(SmsRetriever.EXTRA_CONSENT_INTENT)
                        try {
                            // Start activity to show consent dialog to user, activity must be started in
                            // 5 minutes, otherwise you'll receive another TIMEOUT intent
                            launcher.launch(consentIntent)
                        } catch (e: ActivityNotFoundException) {
                            Timber.e(e, "Activity Not found for SMS consent API")
                        }
                    }

                    CommonStatusCodes.TIMEOUT -> Timber.d("Timeout in sms verification receiver")
                }
            }
        }
    }