public void ExecuteThisCommand(string[] commandParameters)
{
this.coreValidator.EitherOrParameterLength(commandParameters, 5, 7);
var employeeFirstName = commandParameters[1];
var clientUniqueName = commandParameters[2];
var vehicleRegistrationNumber = commandParameters[3];
var stockUniqueNumber = commandParameters[4];
var employeeLastName = "";
string employeeDepartmentName = "";
IEmployee employee;
if (commandParameters.Length == 7)
{
employeeLastName = commandParameters[5];
employeeDepartmentName = commandParameters[6];
employee = this.coreValidator.EmployeeUnique(database.Employees, employeeFirstName, employeeLastName, employeeDepartmentName);
}
else
{
employee = this.coreValidator.EmployeeUnique(database.Employees, employeeFirstName, null, null);
}
this.coreValidator.CounterpartyNotRegistered(database.Clients, clientUniqueName, "client");
var client = database.Clients.FirstOrDefault(x => x.Name == clientUniqueName);
//stock we sell must be present in the warehouse
bool stockExists = stockManager.ConfirmStockExists(stockUniqueNumber, employee);
if (stockExists == false)
{
throw new ArgumentException(
$"Trying to sell the stock with unique ID {stockUniqueNumber} that is not present in the Warehouse");
}
var stock = this.database.AvailableStocks.FirstOrDefault(x => x.UniqueNumber == stockUniqueNumber);
//there is no need to check vehicle for null because we create a default vehicle with every client registration
var vehicle = ((IClient)client).Vehicles.FirstOrDefault(x =>
x.RegistrationNumber == vehicleRegistrationNumber);
this.SellStockToClient(stock, (IClient)client, vehicle);
}
