public void Display(VendingMachine vendingMachine, List <VendingMachineItem> customer, MainMenu mainmenu, PurchaseMenu purchaseMenu, VendingMachineLogger logger)
{
try
{
// variables for keeping track of various user inputs and interaction
string input;
ConsoleKeyInfo key;
int addedMoney = 0;
decimal startingBalance = 0.00m;
decimal moneyFed = 0.00m;
decimal price = 0.00m;
bool stayInSubMenu = true;
string item;
while (stayInSubMenu)
{
MenuMusic();
Console.WriteLine();
Console.WriteLine("Purchase Menu".PadLeft(18));
Console.WriteLine(" ________________________");
Console.WriteLine("1] >> Insert Money");
Console.WriteLine("2] >> Purchase Items");
Console.WriteLine("3] >> Return To Main Menu");
Console.WriteLine();
Console.WriteLine($"Current Balance: ${vendingMachine.Balance}");
Console.WriteLine();
Console.Write("Select Your Option: ");
// prompt user to select an option
key = Console.ReadKey();
ButtonClick();
if (key.KeyChar == '1')
{
Console.Clear();
Console.Write("Insert $1 Or $5 Bills: $ ");
// prompt user to insert bills of various denominations
key = Console.ReadKey();
int.TryParse(key.KeyChar.ToString(), out addedMoney);// storing users input to a variable to pass in to the purchasing methods
ButtonClick();
if (addedMoney <= 5 && addedMoney > 0)
{
stayInSubMenu = false;
Console.WriteLine();
// add the money to the balance and also pass the various information in to the logger
// TO DO - turn this in to a method to clean up clutter in the menu classes
startingBalance = vendingMachine.Balance;
moneyFed = addedMoney + 0.00m;
vendingMachine.FeedMoney(addedMoney);
logger.RecordTransaction("FEED MONEY : ", startingBalance, moneyFed, vendingMachine.Balance);
Console.Clear();
// return to purchase menu
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
break;
}
else
{
// error message to limit accepted bill denominations ,
// and make it a pain in the ass to add unrealistic amounts of money in to the machine
Console.WriteLine();
Console.WriteLine("Machine Only Accepts $1 And $5 Bills ");
Console.WriteLine();
}
}
else if (key.KeyChar == '2')
{
Console.Clear();
// display machine inventory
DisplayMachineItems(vendingMachine);
Console.WriteLine();
Console.Write("Which item would you like to purchase(press Q to leave)? ");
// prompt user to select an inventory item
input = Console.ReadLine();
ButtonClick();
if (input.ToLower() == "q")
{
// lets user quit menu without making a selection
Console.Clear();
Console.WriteLine("Returning To Purchase Menu");
}
else
{
// if balance is enough AND item is in stock, this will perform the necessary purchase functions
// and dispense items from the vending machine to the customers bin ( list )
Console.Clear();
price = vendingMachine.GetItemAtSlot(input).Price;
startingBalance = vendingMachine.Balance;
item = vendingMachine.GetItemAtSlot(input).ItemName;
MakePurchase(input, item, startingBalance, price, vendingMachine.Balance, vendingMachine, customer, logger, mainmenu);
}
}
else if (key.KeyChar == '3')
{
// return to main menu
stayInSubMenu = false;
Console.Clear();
Console.WriteLine();
Console.WriteLine("Returning To Main Menu");
mainmenu.Display(vendingMachine, customer, mainmenu, logger);
Console.Clear();
}
else
{
// prevents user from entering invalid inputs
Console.Clear();
Console.WriteLine();
Console.WriteLine("Please Select A Valid Menu Option");
ErrorBuzz();
Console.Clear();
}
}
}
catch (KeyNotFoundException)
{
// prevents user from selecting an invalid product code
Console.WriteLine();
Console.WriteLine("Invalid Product Code");
ErrorBuzz();
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
}
catch (IndexOutOfRangeException)
{
// prevents the unlikely case of an index out of bounds error being thrown
Console.Clear();
Console.WriteLine();
Console.WriteLine("Please Make Your Selection Again");
ErrorBuzz();
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
}
catch (NullReferenceException)
{
// prevents the unlikely case of a nullref being thrown
Console.WriteLine();
Console.WriteLine("Please Select Another Product");
ErrorBuzz();
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
}
catch (FormatException)
{
// prevents invalid input error in the feed money function
Console.Clear();
Console.WriteLine();
Console.WriteLine("Please Enter $1 Or $5 Dollar Bills");
ErrorBuzz();
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
}
}
public void Display(VendingMachine vendingMachine, List <VendingMachineItem> customer, MainMenu mainmenu, VendingMachineLogger logger)
{
try
{
// variables for keeping track of user inputs
bool stayInMenu = true;
ConsoleKeyInfo key;
while (stayInMenu)
{
MenuMusic();
// Main Menu
Console.WriteLine();
Console.WriteLine("Main Menu".PadLeft(15));
Console.WriteLine(" ________________________");
Console.WriteLine("1] >> Display Items");
Console.WriteLine("2] >> Purchase Menu");
Console.WriteLine("3] >> Complete Transaction");
Console.WriteLine("Q] >> Quit");
Console.WriteLine();
// prompt user to select an option
Console.Write("Select Your Option: ");
key = Console.ReadKey();
ButtonClick();
if (key.KeyChar == '1')
{
// displays all items in the inventory
Console.Clear();
DisplayMachineItems(vendingMachine);
}
else if (key.KeyChar == '2')
{
// display purchase menu
stayInMenu = false;
Console.Clear();
DisplaySubMenu(vendingMachine, customer, mainmenu, logger);
break;
}
else if (key.KeyChar == '3')
{
// return any due change and consume items, then terminate the program
Console.Clear();
stayInMenu = false;
CompleteTransaction(vendingMachine.Balance, vendingMachine, customer, logger, mainmenu);
break;
}
else if (key.KeyChar.ToString().ToLower() == "q" && customer.Count == 0 && vendingMachine.Balance == 0)
{
// quits the program IF the user isn't due any change AND no items to consume
stayInMenu = false;
Console.Clear();
Console.WriteLine();
Console.WriteLine("Thank You Come Again");
Console.WriteLine();
break;
}
else
{
// error catch to prevent invalid input or leaving without returning change and taking items
Console.Clear();
Console.WriteLine();
Console.WriteLine("Please Select A Valid Menu Option");
Console.WriteLine();
Console.WriteLine("Or".PadLeft(15));
Console.WriteLine();
Console.WriteLine("Select Complete Transaction To Return Your Money");
ErrorBuzz();
Delay();
Console.Clear();
}
}
}
catch (KeyNotFoundException)
{
Console.Clear();
Console.WriteLine();
Console.WriteLine("Please Make Another Selection");
ErrorBuzz();
Console.Clear();
}
}
public void MakePurchase(string slot, string item, decimal startBal, decimal price, decimal finalBal, VendingMachine vendingMachine, List <VendingMachineItem> customer, VendingMachineLogger logger, MainMenu mainmenu)
{
vendingMachine.Purchase(slot, vendingMachine, customer, mainmenu);
logger.RecordTransaction($"{item} {slot.ToUpper()}", startBal, price, finalBal);
}
public void CompleteTransaction(decimal startBal, VendingMachine vendingMachine, List <VendingMachineItem> customer, VendingMachineLogger logger, MainMenu mainmenu)
{
if (customer.Count > 0 || vendingMachine.Balance > 0)// if - customer has items to consume and change to be returned, perform appropriate actions
{
Console.WriteLine();
foreach (var item in customer)// loop through purchased items and 'cosume' them
{
Console.WriteLine(item.Consume());
}
customer.Clear(); // clear out consumed items
startBal = vendingMachine.Balance;
Console.WriteLine();
Console.WriteLine($"Total Change Due: {vendingMachine.Balance}");
Console.WriteLine();
Console.WriteLine(vendingMachine.Change().DueChange); // prints change in least amount of quarters, dimes and nickels
logger.RecordTransaction("GIVE CHANGE ", startBal, startBal, vendingMachine.Balance);
Console.WriteLine();
Console.WriteLine("Thank You Come Again");
Console.WriteLine();
Delay();
Console.Clear();
}
else
{
Console.Clear();
Console.WriteLine();
Console.WriteLine("There Is No Transaction To Complete");
ErrorBuzz();
Console.Clear();
mainmenu.Display(vendingMachine, customer, mainmenu, logger);
}
}
public void DisplaySubMenu(VendingMachine vendingMachine, List <VendingMachineItem> customer, MainMenu mainmenu, VendingMachineLogger logger)
{
PurchaseMenu purchaseMenu = new PurchaseMenu();
purchaseMenu.Display(vendingMachine, customer, mainmenu, purchaseMenu, logger);
}