/// <summary>
/// get the next city to travel to from the user
/// </summary>
/// <returns>string City</returns>
public string DisplayGetNextCity()
{
string nextCity = "";
ConsoleUtil.DisplayReset();
ConsoleUtil.DisplayPromptMessage("Enter the name of the next city:");
nextCity = Console.ReadLine();
return(nextCity);
}
/// <summary>
/// A general method to get values from an enum from the user
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="maxAttempts"></param>
/// <param name="userPrompt"></param>
/// <param name="returnValue"></param>
/// <returns></returns>
public static bool GetEnumValueFromUser <T>(int maxAttempts, string userPrompt, out T returnValue, bool enterCancelsOut = false) where T : struct, IConvertible
{
//
// declare values
//
bool validInput = true;
int attempts = 0;
string userResponse;
returnValue = default(T);
do
{
if (validInput)
{
ConsoleUtil.DisplayPromptMessage(userPrompt);
}
else
{
//
// Show the user some valid values for the enum
//
ConsoleUtil.DisplayMessage("\nValid values are: ");
foreach (var item in Enum.GetValues(typeof(T)))
{
ConsoleUtil.DisplayMessage("(" + item + ")");
}
ConsoleUtil.DisplayPromptMessage("Please enter a valid value: ");
}
//
// get the user response
//
userResponse = ConsoleUtil.UppercaseFirst(Console.ReadLine());
if (enterCancelsOut && userResponse == "")
{
return(false);
}
validInput = Enum.TryParse <T>(userResponse, out returnValue);
attempts++;
}while (!validInput && attempts < maxAttempts);
return(validInput);
}
/// <summary>
/// Gets a company name from the user
/// </summary>
/// <param name="product"></param>
/// <returns></returns>
public string DisplayGetCompanyVisited()
{
//
// initialize variable
//
string companyName;
//
// set up the console
//
ConsoleUtil.HeaderText = "Visiting Company";
ConsoleUtil.DisplayReset();
//
// get the company name
//
ConsoleUtil.DisplayPromptMessage("What company did you visit? ");
companyName = Console.ReadLine();
DisplayContinuePrompt();
return(companyName);
}
/// <summary>
/// get the next city to travel to from the user
/// </summary>
/// <returns>string City</returns>
public string DisplayGetNextCity()
{
//
// initialize variables
//
string nextCity = "";
//
// set up the console
//
ConsoleUtil.HeaderText = "Input City";
ConsoleUtil.DisplayReset();
//
// get user input
//
ConsoleUtil.DisplayPromptMessage("City:");
nextCity = Console.ReadLine();
DisplayContinuePrompt();
return(nextCity);
}
/// <summary>
/// setup the new salesperson object with the initial 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 Salesperson DisplaySetupAccount()
{
//
// initialize variables
//
bool validResponse;
int userAge;
int productAmount;
Product.ProductType productType;
Salesperson salesperson = new Salesperson();
//
// set up the console
//
ConsoleUtil.HeaderText = "Account Setup";
ConsoleUtil.DisplayReset();
//
// get new account info
//
ConsoleUtil.DisplayPromptMessage("First name: ");
salesperson.FirstName = Console.ReadLine();
Console.WriteLine("");
ConsoleUtil.DisplayPromptMessage("Last name: ");
salesperson.LastName = Console.ReadLine();
Console.WriteLine("");
ConsoleUtil.DisplayMessage("Age");
validResponse = ConsoleValidator.TryGetIntegerFromUser(10, 90, MAXIMUM_ATTEMPTS, "years old", out userAge);
if (validResponse)
{
salesperson.Age = userAge;
}
ConsoleUtil.DisplayPromptMessage("Account ID: ");
salesperson.AccountID = Console.ReadLine();
Console.WriteLine("");
//
// validate user input
//
ConsoleUtil.DisplayMessage("Setting up inventory..");
ConsoleUtil.DisplayMessage("");
if (!ConsoleValidator.GetEnumValueFromUser <Product.ProductType>(MAXIMUM_ATTEMPTS, "Body Style:", out productType))
{
ConsoleUtil.DisplayMessage("Maximum attempts exceeded, returning to main menu.");
}
if (!ConsoleValidator.TryGetIntegerFromUser(MINIMUM_BUYSELL_AMOUNT, MAXIMUM_BUYSELL_AMOUNT, MAXIMUM_ATTEMPTS, $"{productType.ToString()}s", out productAmount))
{
ConsoleUtil.DisplayMessage("Max attempts exceeded, returning to main menu with default value of 0 vehicles.");
}
//
// set salesman product object
//
salesperson.CurrentStock[productType].NumberOfUnits = productAmount;
salesperson.Rank = Salesperson.Ranks.Beginner;
DisplayContinuePrompt();
return(salesperson);
}
/// <summary>
/// helper method to get a valid integer from the user within a range
/// </summary>
/// <param name="minValue">inclusive minimum value</param>
/// <param name="maxValue">inclusive maximum value</param>
/// <param name="maxAttempts">maximum number of attempts</param>
/// <param name="pluralName">plural name of item</param>
/// <param name="validInput">indicates valid user input</param>
/// <returns></returns>
public static bool TryGetIntegerFromUser(int minValue, int maxValue, int maxAttempts, string pluralName, out int userInteger, bool enterCancelsOut = false)
{
bool validInput = false;
bool maxAttemptsExceeded = false;
string userResponse;
string feedbackMessage = "";
int attempts = 1;
userInteger = 0;
while (!validInput && !maxAttemptsExceeded)
{
//
// more attempts available
//
if (attempts <= maxAttempts)
{
ConsoleUtil.DisplayPromptMessage($"Enter the number, between {minValue} and {maxValue}, of {pluralName}:");
userResponse = Console.ReadLine();
if (enterCancelsOut && userResponse == "")
{
return(false);
}
ConsoleUtil.DisplayMessage("");
//
// input is an Integer
//
if (int.TryParse(userResponse, out userInteger))
{
//
// input is in range
//
if (userInteger >= minValue && userInteger <= maxValue)
{
validInput = true;
}
//
// input is not in range
//
else
{
feedbackMessage = $"The number {userInteger} is not in the specified range.";
}
}
//
// input is not an Integer
//
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();
}
ConsoleUtil.DisplayReset();
}
else
{
ConsoleUtil.DisplayMessage("");
}
attempts++;
}
else
{
maxAttemptsExceeded = true;
}
}
return(validInput);
}
/// <summary>
/// setup the new salesperson object with the initial 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 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.DisplayPromptMessage("Product Types: ");
ConsoleUtil.DisplayMessage("");
foreach (string productTypeName in Enum.GetNames(typeof(ProductType)))
{
if (productTypeName != ProductType.None.ToString())
{
ConsoleUtil.DisplayMessage(productTypeName);
}
}
ConsoleUtil.DisplayMessage("");
ConsoleUtil.DisplayPromptMessage("Enter the product type: ");
ProductType productType;
if (Enum.TryParse <ProductType>(UppercaseFirst(Console.ReadLine()), out productType))
{
salesperson.CurrentStock.Type = productType;
}
else
{
salesperson.CurrentStock.Type = 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.DisplayReset();
ConsoleUtil.DisplayMessage("Your account is setup");
DisplayContinuePrompt();
return(salesperson);
}
