/// <summary>
/// get the number of widget units to buy from the user
/// </summary>
/// <returns>int number of units to buy</returns>
public int DisplayGetNumberOfUnitsToBuy()
{
int numberOfUnitsToAdd = 0;
ConsoleUtil.HeaderText = "Buy Inventory";
ConsoleUtil.DisplayReset();
try
{
ConsoleUtil.DisplayPromptMessage("How many do you want to buy? ");
numberOfUnitsToAdd = int.Parse(Console.ReadLine());
}
catch (FormatException)
{
ConsoleUtil.DisplayMessage("You did not enter an integer.");
}
catch (OverflowException)
{
ConsoleUtil.DisplayMessage("Your integer was too large.");
}
catch (Exception)
{
ConsoleUtil.DisplayMessage("An error occurred.");
}
ConsoleUtil.DisplayPromptMessage($"{numberOfUnitsToAdd} units successfully purchased.");
DisplayContinuePrompt();
return numberOfUnitsToAdd;
}
public string DisplayGetNextCity()
{
string nextCity = "";
ConsoleUtil.DisplayReset();
ConsoleUtil.DisplayPromptMessage("Enter the name of the next city:");
nextCity = Console.ReadLine();
return(nextCity);
}
/// <summary>
/// get the next city to travel to from the user
/// </summary>
/// <returns>string City</returns>
public string DisplayGetNextCity()
{
ConsoleUtil.HeaderText = "Travel";
ConsoleUtil.DisplayReset();
string nextCity = "";
ConsoleUtil.DisplayPromptMessage("Next City of Travel: ");
nextCity = Console.ReadLine();
DisplayContinuePrompt();
return nextCity;
}
/// <summary>
/// get the number of widget units to sell from the user
/// </summary>
/// <returns></returns>
public int DisplayGetNumberOfUnitsToSell()
{
int numberOfUnitsToSell = 0;
ConsoleUtil.HeaderText = "Sell Inventory";
ConsoleUtil.DisplayReset();
try
{
ConsoleUtil.DisplayPromptMessage("How many do you want to sell? ");
numberOfUnitsToSell = int.Parse(Console.ReadLine());
}
catch (FormatException)
{
ConsoleUtil.DisplayMessage("You did not enter an integer.");
}
catch (OverflowException)
{
ConsoleUtil.DisplayMessage("Your integer was too large.");
}
catch (Exception)
{
ConsoleUtil.DisplayMessage("An error occurred.");
}
if (_salesperson.CurrentStock.ProductUnits - numberOfUnitsToSell < 0)
{
ConsoleUtil.DisplayMessage("You cannot sell more units than you have in inventory.");
numberOfUnitsToSell = 0;
DisplayContinuePrompt();
}
else
{
ConsoleUtil.DisplayPromptMessage($"{numberOfUnitsToSell} units successfully sold.");
DisplayContinuePrompt();
}
return numberOfUnitsToSell;
}
/// <summary>
/// setup the new salesperson object with the initial data and validate the data
/// Note: To maintain the pattern of only the Controller changing the data this method should
/// return a Salesperson object with the initial data to the controller. For simplicity in
/// this demo, the ConsoleView object is allowed to access the Salesperson object's properties.
/// </summary>
public void DisplaySetupAccount()
{
ConsoleUtil.HeaderText = "Account Setup";
ConsoleUtil.DisplayReset();
ConsoleUtil.DisplayMessage("Setup your account now.");
Console.WriteLine();
ConsoleUtil.DisplayPromptMessage("Enter your first name: ");
_salesperson.FirstName = Console.ReadLine();
Console.WriteLine();
ConsoleUtil.DisplayPromptMessage("Enter your last name: ");
_salesperson.LastName = Console.ReadLine();
Console.WriteLine();
//validating account number
bool validAccountNumber = false;
while (!validAccountNumber)
{
//indicates whether or not an exception was thrown
string exceptionMessage = "";
try
{
ConsoleUtil.DisplayPromptMessage("Enter your account number: ");
_salesperson.AccountNumber = int.Parse(Console.ReadLine());
}
catch (FormatException e)
{
ConsoleUtil.DisplayMessage("You did not enter an integer.");
exceptionMessage = e.Message;
}
catch (OverflowException e)
{
ConsoleUtil.DisplayMessage("Your number was too large.");
exceptionMessage = e.Message;
}
catch (Exception e)
{
ConsoleUtil.DisplayMessage("An error occurred.");
exceptionMessage = e.Message;
}
finally
{
Console.WriteLine();
}
if (exceptionMessage == "")
{
validAccountNumber = true;
}
}
//validating widget type
bool validWidgetType = false;
while (!validWidgetType)
{
//indicates whether or not an exception was thrown
string exceptionMessage = "";
try
{
ConsoleUtil.DisplayPromptMessage("Enter the type of widget you will be selling: ");
string userResponse = Console.ReadLine();
_salesperson.CurrentStock.Type = (WidgetItemStock.WidgetType)Enum.Parse(typeof(WidgetItemStock.WidgetType), userResponse, true);
int widgetAsInt = (int)_salesperson.CurrentStock.Type;
if (widgetAsInt < 1 || widgetAsInt > 3)
{
throw new IndexOutOfRangeException();
}
}
catch (ArgumentException e)
{
ConsoleUtil.DisplayMessage("You did not enter a valid widget type.");
exceptionMessage = e.Message;
}
catch (IndexOutOfRangeException)
{
ConsoleUtil.DisplayMessage("You did not enter a valid widget type.");
exceptionMessage = "Not within the enum or user selected type none.";
}
catch (Exception e)
{
ConsoleUtil.DisplayMessage("An error occurred.");
exceptionMessage = e.Message;
}
finally
{
Console.WriteLine();
}
if (exceptionMessage == "")
{
validWidgetType = true;
}
}
//validating number of widgets
bool validWidgetCount = false;
while (!validWidgetCount)
{
//indicates whether or not an exception was thrown
string exceptionMessage = "";
try
{
ConsoleUtil.DisplayPromptMessage("Enter the number of widgets: ");
_salesperson.CurrentStock.AddUnits(int.Parse(Console.ReadLine()));
}
catch (FormatException e)
{
ConsoleUtil.DisplayMessage("You did not enter an integer.");
exceptionMessage = e.Message;
}
catch (OverflowException e)
{
ConsoleUtil.DisplayMessage("Your number was too large.");
exceptionMessage = e.Message;
}
catch (Exception e)
{
ConsoleUtil.DisplayMessage("An error occurred.");
exceptionMessage = e.Message;
}
finally
{
Console.WriteLine();
}
if (exceptionMessage == "")
{
validWidgetCount = true;
}
}
DisplayContinuePrompt();
}
public void DisplayUpdateAccountInfo()
{
bool updatingAccountInfo = true;
while (updatingAccountInfo)
{
ConsoleUtil.HeaderText = "Update Account Info";
ConsoleUtil.DisplayReset();
Console.CursorVisible = false;
ConsoleUtil.DisplayMessage("Select the attribute you wish to update:");
Console.WriteLine();
Console.WriteLine(
"\t" + "1. First Name" + Environment.NewLine +
"\t" + "2. Last Name" + Environment.NewLine +
"\t" + "3. Account Number" + Environment.NewLine +
"\t" + "4. Widget Type" + Environment.NewLine +
"\t" + "E. Exit" + Environment.NewLine);
ConsoleKeyInfo userResponse = Console.ReadKey(true);
ConsoleUtil.DisplayReset();
switch (userResponse.KeyChar)
{
case '1':
ConsoleUtil.DisplayPromptMessage("Enter the new first name: ");
_salesperson.FirstName = Console.ReadLine();
DisplayContinuePrompt();
break;
case '2':
ConsoleUtil.DisplayPromptMessage("Enter the new last name: ");
_salesperson.LastName = Console.ReadLine();
DisplayContinuePrompt();
break;
case '3':
ConsoleUtil.DisplayPromptMessage("Enter the new account number: ");
try
{
_salesperson.AccountNumber = int.Parse(Console.ReadLine());
}
catch (FormatException)
{
ConsoleUtil.DisplayMessage("You did not enter an integer.");
}
catch (OverflowException)
{
ConsoleUtil.DisplayMessage("Your integer was too large.");
}
catch (Exception)
{
ConsoleUtil.DisplayMessage("An error occurred.");
}
DisplayContinuePrompt();
break;
case '4':
ConsoleUtil.DisplayPromptMessage("Enter the new widget type: ");
try
{
_salesperson.CurrentStock.Type = (WidgetItemStock.WidgetType)Enum.Parse(typeof(WidgetItemStock.WidgetType), Console.ReadLine(), true);
int widgetAsInt = (int)_salesperson.CurrentStock.Type;
if (widgetAsInt < 1 || widgetAsInt > 3)
{
throw new IndexOutOfRangeException();
}
}
catch (ArgumentException e)
{
ConsoleUtil.DisplayMessage("You did not enter a valid widget type.");
}
//using one of the predefined exception types for when the user enters a number, say '0' or '4' that does not correspond to a widget type
catch (IndexOutOfRangeException)
{
ConsoleUtil.DisplayMessage("You did not enter a valid widget type.");
}
catch (Exception e)
{
ConsoleUtil.DisplayMessage("An error occurred.");
}
DisplayContinuePrompt();
break;
case 'E':
case 'e':
updatingAccountInfo = false;
DisplayContinuePrompt();
break;
default:
ConsoleUtil.DisplayMessage("You did not enter a valid input.");
DisplayContinuePrompt();
break;
}
}
}
public static bool TryGetIntegerFromUser(int minValue, int maxValue, int maxAttempts, string pluralName, out int userInteger)
{
bool validInput = false;
bool maxAttemptsExceeded = false;
string userResponse;
string feedbackMessage = "";
int attempts = 1;
userInteger = 0;
while (!validInput && !maxAttemptsExceeded)
{
if (attempts <= maxAttempts)
{
ConsoleUtil.DisplayPromptMessage($"Please enter the number between {minValue} and {maxValue}, of {pluralName}:");
userResponse = Console.ReadLine();
ConsoleUtil.DisplayMessage("");
if (int.TryParse(userResponse, out userInteger))
{
if (userInteger >= minValue && userInteger <= maxValue)
{
validInput = true;
}
else
{
feedbackMessage = $"The number {userInteger} is not in the specified range.";
}
}
else
{
feedbackMessage = $"{userResponse} is not an integer.";
}
if (!validInput && attempts <= maxAttempts)
{
ConsoleUtil.DisplayMessage($"You entered: {userResponse}");
ConsoleUtil.DisplayMessage(feedbackMessage);
if (attempts < maxAttempts)
{
ConsoleUtil.DisplayMessage($"Please enter an integer between {minValue} and {maxValue}.");
ConsoleUtil.DisplayMessage("Press any key to try again.");
Console.ReadKey();
}
else
{
ConsoleUtil.DisplayMessage("It appears you have exceeded the maximum number of attempts allowed.");
ConsoleUtil.DisplayMessage("Press any key to continue.");
Console.ReadKey();
}
Console.Clear();
}
else
{
ConsoleUtil.DisplayMessage("");
}
attempts++;
}
else
{
maxAttemptsExceeded = true;
}
}
return(validInput);
}
public Salesperson DisplaySetupAccount()
{
Salesperson salesperson = new Salesperson();
ConsoleUtil.HeaderText = "Account Setup";
ConsoleUtil.DisplayReset();
ConsoleUtil.DisplayMessage("Setup your account now.");
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayPromptMessage("Enter your first name: ");
salesperson.FirstName = Console.ReadLine();
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayPromptMessage("Enter your last name: ");
salesperson.LastName = Console.ReadLine();
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayPromptMessage("Enter your account ID: ");
salesperson.AccountID = Console.ReadLine();
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayMessage("Product Types");
ConsoleUtil.DisplayMessage("");
foreach (string productTypeName in Enum.GetNames(typeof(Product.ProductType)))
{
if (productTypeName != Product.ProductType.None.ToString())
{
ConsoleUtil.DisplayMessage(productTypeName);
}
}
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayPromptMessage("Enter the product type: ");
Product.ProductType productType;
if (Enum.TryParse <Product.ProductType>(UppercaseFirst(Console.ReadLine()), out productType))
{
salesperson.CurrentStock.Type = productType;
}
else
{
salesperson.CurrentStock.Type = Product.ProductType.None;
}
if (ConsoleValidator.TryGetIntegerFromUser(0, 100, 3, "products", out int numberOfUnits))
{
salesperson.CurrentStock.AddProducts(numberOfUnits);
}
else
{
ConsoleUtil.DisplayMessage("It appears you are having difficulty setting the number of products in your stock.");
ConsoleUtil.DisplayMessage("By default, the number of products in your inventory are now set to zero.");
salesperson.CurrentStock.AddProducts(0);
DisplayContinuePrompt();
}
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayReset();
ConsoleUtil.DisplayMessage("Your account has been setup");
DisplayContinuePrompt();
return(salesperson);
}