public Contract(Customer customer, TariffType type, DateTime contractDate)
{
Customer = customer;
ContractNumber = random.Next(10000, 99999);
Number = new PhoneNumber(random.Next(100, 999));
tariffPlan = new TariffPlan(type);
ContractDate = contractDate;
dateOfLastTariffChange = DateTime.Now;
}
public bool ChangeTariff(TariffType type)
{
if (DateTime.Now.AddMonths(-1) < dateOfLastTariffChange)
{
return(false);
}
else
{
dateOfLastTariffChange = DateTime.Now;
tariffPlan = new TariffPlan(type);
return(true);
}
}