public PaymentMediator(IPaymentProvider paymentProvider, ICashPaymentService cashService, IEcommerceServices ecommerceServices)
{
_paymentProvider = paymentProvider;
_cashService = cashService;
_ecommerceServices = ecommerceServices;
_paymentProvider.OnFetchMoneyCommand += (sender, e) =>
{
IEcommerceService ecomService = ecommerceServices[e.Source];
if (ecomService != null)
{
ecomService.FetchMoney(e.Order);
}
else
{
switch (e.Source)
{
case PaymentSource.Cash:
foreach (ICashDeviceAdapter cashDevide in _cashService.CashDevices)
{
cashDevide.Start();
}
break;
default:
throw new NotImplementedException($"Unknown payment source {e.Source.GetCode()}");
}
}
};
_paymentProvider.OnTotalAmountSpecified += (sender, e) => {
// Notify all cash devices about duty (a remaining part of payment) was changed
foreach (var cashDevice in _cashService.CashDevices)
{
cashDevice.ReduceOrSetDutyTo(e.Value);
}
};
_paymentProvider.OnGiveChangeSpecified += (sender, e) => {
_cashService.IssueChange(e.ChangeAmount);
};
foreach (var cashDevice in _cashService.CashDevices)
{
cashDevice.OnMoneyReceived += (sender, e) => {
_paymentProvider.SomeMoneyIncome(PaymentSource.Cash, e.Money);
// Notify all cash devices about duty (a remaining part of payment) was changed
foreach (var device in _cashService.CashDevices)
{
device.ReduceOrSetDutyTo(_paymentProvider.Duty);
}
}
}
;
foreach (var cashDevice in _cashService.CashDevices)
{
cashDevice.OnSomeChangeIssued += (sender, e) => {
_paymentProvider.SomeChangeExtracted(e.Money);
}
}
;
foreach (var ecomService in _ecommerceServices.Services)
{
ecomService.OnReceived += (sender, e) => {
_paymentProvider.SomeMoneyIncome(ecomService.Source, e.Income);
};
}
}