public async Task <double> GetSaleListingScore(int id)
{
SaleListingModel saleListing = await _context.Set <SaleListingModel>()
.Where(s => s.Id == id)
.Include(s => s.Vehicle)
.FirstOrDefaultAsync();
VehicleModel vehicle = await _context.Set <VehicleModel>()
.Where(v => v.Vin == saleListing.Vehicle.Vin)
.Include(v => v.VehicleSpecification)
.Include(v => v.Services)
.Include(v => v.Accidents)
.FirstOrDefaultAsync();
float averageAskingPriceForModel = _context.Set <SaleListingModel>().Where(s => s.Vehicle.Make == vehicle.Make).Where(s => s.Vehicle.Model == vehicle.Model).Average(s => s.Price);
int numberOfServices = vehicle.Services.Count;
int numberOfAccidents = vehicle.Accidents.Count;
int numberOfAuthorizedServices = _context.Set <VehicleServiceModel>().Where(s => s.Vehicle.Vin == vehicle.Vin).Where(s => s.ServicedBy.ServiceType == Enums.UserEnums.ServiceType.AUTHORIZED).Count();
DateTime today = DateTime.Now;
double priceScore = (-((averageAskingPriceForModel - saleListing.Price) / averageAskingPriceForModel) + 0.5) * 30;
int yearDifference = today.Year - vehicle.VehicleSpecification.MakeDate.Year;
int servicesDifference = numberOfServices - numberOfAuthorizedServices;
double serviceScore = (numberOfServices / (RECOMMENDED_SERVICE_COUNT_PER_YEAR * (yearDifference > 0 ? yearDifference : 1))) * 40 * (numberOfServices / (servicesDifference > 0 ? servicesDifference : 1));
double accidentScore = (MAXIMUM_ACCIDENT_COUNT - numberOfAccidents) / MAXIMUM_ACCIDENT_COUNT;
return(priceScore + serviceScore + accidentScore);
}
public async Task DeleteSaleListing(SaleListingModel saleListing)
{
SaleListingModel res = await _context.Set <SaleListingModel>().FindAsync(saleListing.Id);
_context.Set <SaleListingModel>().Remove(res);
await _context.SaveChangesAsync();
}
public async Task <SaleListingModel> CreateSaleListing(SaleListingModel saleListing)
{
var res = _context.Set <SaleListingModel>().Add(saleListing);
await _context.SaveChangesAsync();
return(res);
}
public async Task <SaleListingModel> UpdateSaleListing(SaleListingModel saleListingModel)
{
_context.Set <SaleListingModel>().AddOrUpdate(saleListingModel);
await _context.SaveChangesAsync();
return(saleListingModel);
}
public SaleListingViewModel(
IEventAggregator eventAggregator,
SaleListingModel saleListing,
PersonUserService personUserService,
VehicleService vehicleService)
{
_eventAggregator = eventAggregator;
_saleListing = saleListing;
_personUserService = personUserService;
_vehicleService = vehicleService;
}
public void SetVehicleSaleListing(SaleListingModel saleListing)
{
_vehicle.SaleListing = saleListing;
NotifyOfPropertyChange(SaleListingActionLabel);
Refresh();
}
