private async Task CheckServiceUseOverlap(UseServiceEvent serviceEvent, Contract contract, Contract secondContract = null)
{
var overlapCase = OverlapCase(serviceEvent.StartDate, serviceEvent.EndDate, contract.StartDate, contract.EndDate);
/*0: No overlap 1122 e1S2 > 0 or 2211 s1E2 < 0
* 1: Start overlat 1212
* 2: Middle overlap 2112
* 3: End overlap 2121
* 4: Complete overlap 1221
* */
switch (overlapCase)
{
case 0: break;
case 1:
serviceEvent.EndDate = (contract.StartDate);
await AddServiceUse(
serviceEvent.Customer,
contract,
contract.StartDate,
serviceEvent.EndDate);
break;
case 2:
serviceEvent.Contract = contract;
break;
case 3:
serviceEvent.StartDate = (contract.EndDate);
await AddServiceUse(serviceEvent.Customer,
contract,
serviceEvent.StartDate,
contract.EndDate
);
break;
case 4:
serviceEvent.EndDate = contract.StartDate;
await AddServiceUse(serviceEvent.Customer,
contract,
contract.StartDate,
contract.EndDate
);
if (secondContract != null)
{
await AddServiceUse(serviceEvent.Customer,
secondContract,
secondContract.StartDate,
secondContract.EndDate
);
}
break;
}
}
private async Task <UseServiceEvent> AddServiceUse(Customer customer, Contract contract, DateTime startDate, DateTime endDate)
{
var serviceUse = new UseServiceEvent
{
Id = Guid.NewGuid(),
Customer = customer,
Contract = contract,
StartDate = startDate,
EndDate = endDate
};
await _context.UseServiceEvents.AddAsync(serviceUse);
return(serviceUse);
}
private long CalcDays(UseServiceEvent use, CustomerCostsPeriodModel timeframe, Service service)
{
var endStartDiff = DaysDiff(use.EndDate, timeframe.StartDate);
var startEndDiff = DaysDiff(use.StartDate, timeframe.EndDate);
// No overlap
if (endStartDiff > 0 || startEndDiff < 0)
{
return(0);
}
var startDiff = DaysDiff(timeframe.StartDate, use.StartDate);
var endDiff = DaysDiff(use.EndDate, timeframe.EndDate);
var useDiff = DaysDiff(use.StartDate, use.EndDate);
var sDate = DateTime.MinValue;
var eDate = DateTime.MinValue;
if (startDiff >= 0 && endDiff >= 0)
{
sDate = use.StartDate;
eDate = use.EndDate;
}
else if (startDiff < 0 && endDiff < 0)
{
sDate = timeframe.StartDate;
eDate = timeframe.EndDate;
}
else if (startDiff < 0)
{
sDate = timeframe.StartDate;
eDate = use.EndDate;
}
else
{
sDate = use.StartDate;
eDate = timeframe.EndDate;
}
if (service.LastBillableDay > service.FirstBillableDay)
{
var daysStart = 0;
if (sDate.DayOfWeek != service.FirstBillableDay)
{
daysStart = service.LastBillableDay - sDate.DayOfWeek + 1;
}
var daysEnd = 0;
if (eDate.DayOfWeek != service.LastBillableDay)
{
daysEnd = eDate.DayOfWeek - service.FirstBillableDay;
}
var totalDays = DaysDiff(sDate, eDate);
var weeks = totalDays / 7 * (service.LastBillableDay - service.FirstBillableDay + 1);
return(weeks + daysStart + daysEnd);
}
else
{
return(DaysDiff(sDate, eDate));
}
}
