public Contract(string number, string phoneNumber, TariffPlan tariffPlan, string personalAccount, string dateOfConclusion)
{
Number = number;
PhoneNumber = new PhoneNumber { Value = phoneNumber };
TariffPlan = tariffPlan;
DateOfConclusion = DateTime.Parse(dateOfConclusion);
PersonalAccount = new PersonalAccount(personalAccount, DateOfConclusion + new TimeSpan(31, 0, 0));
}
public bool ChangeTariffPlan(TariffPlan tariffPlan)
{
DateTime nowDateTime = DateTime.Now, resultDareTime = DateOfConclusion + new TimeSpan(31, 0, 0, 0);
if (resultDareTime >= nowDateTime)
return false;
TariffPlan = tariffPlan;
DateOfConclusion = nowDateTime;
return true;
}