reql_send_sms.scala

r.db("involve").table("authorization_codes").get(phoneNumber) update { doc ⇒
  // Prepare query to SMSC
  val sendSms = {
    val params = s"phones=$phoneNumber&mes=$authorizationCode&fmt=3"
    r.http(s"https://smsc.ru/sys/send.php?login=user&psw=******&$params")
  }
  // Check SMS limit is not reached
  val timeIsOk = r.now().toEpochTime() - doc.getField("last_update").toEpochTime() > 3600
  val countIsOk = doc.getField("count") < 3
  // If is fine then execute request 
  // to SMSC and update document
  r.branch(
    condition = countIsOk || timeIsOk,
    thn = r.branch(
      // Update document only when SMS was realy sent
      condition = sendSms.getField("error") === Null,
      thn = document(
        count = doc.getField("count") + 1,
        last_update = r.now()
      ), els = document.empty
    ), els = document.empty
  )
}