public Guid?AddNewInventory(InventoryViewModel inventoryViewModel)
{
var car = _mapper.Map <Car>(inventoryViewModel);
car = NullifyDependantEntities(car);
car = ManageCarAttributes(inventoryViewModel, car);
Guid?newCarId = _carRepository.AddNewCar(car);
if (newCarId == null)
{
return(null);
}
inventoryViewModel.CarId = (Guid)newCarId;
var inventory = _mapper.Map <Inventory>(inventoryViewModel);
Guid?newInventoryId = _inventoryRepository.AddInventory(inventory);
inventoryViewModel.Id = (Guid)newInventoryId;
var repairDetails = _mapper.Map <Repair>(inventoryViewModel);
repairDetails.CarId = (Guid)newCarId;
_repairRepository.AddNewRepair(repairDetails);
return(newInventoryId);
}