public OperationResult Create(CreateInventory command)
{
var operationResult = new OperationResult();
if (_inventoryRepo.Exists(c => c.ProductId == command.ProductId))
{
return(operationResult.Failed(ApplicationMessage.duplicated));
}
var inventory = new Inventory(command.ProductId, command.UnitPrice);
_inventoryRepo.Create(inventory);
_inventoryRepo.Save();
return(operationResult.Succeeded());
}