public bool ChangeTarrif(ITarif newTarrif)
{
if (Tarif == newTarrif)
{
return(true);
}
var curDate = DateTime.Now;
if (Statistics.LastDatePayment + PaymentPeriod >= curDate)
{
Tarif = newTarrif;
Statistics.LastChangePlan = curDate;
return(true);
}
return(false);
}
public Account(IContract contract, ITarif tarif, TimeSpan tarifChangePeriod, TimeSpan paymentPeriod)
{
if (contract == null)
{
throw new ArgumentNullException(nameof(contract));
}
if (tarif == null)
{
throw new ArgumentNullException(nameof(tarif));
}
Contract = contract;
Client = Contract.Client;
Statistics = new Statistics()
{
LastDatePayment = Contract.AcceptedDate,
LastChangePlan = Contract.AcceptedDate
};
Tarif = tarif;
TarifChangePeriod = tarifChangePeriod;
PaymentPeriod = paymentPeriod;
}
