public static List <VendingMachineSlot> ReadIn()
{
string filePath = @"C:\VendingMachine\";
string fileName = "vendingmachine.csv";
string fullFilePath = Path.Combine(filePath, fileName);
List <VendingMachineSlot> slots = new List <VendingMachineSlot>();
//Possible exceptions while reading!
using (StreamReader sr = new StreamReader(fullFilePath))
{
while (!sr.EndOfStream)
{
//read in each line
string lineIn = sr.ReadLine();
// parse slot name | item name | item price
string[] parsedLine = lineIn.Split('|');
//Check for errors. Will throw exceptions if any errors are found
CheckReadInErrors(parsedLine, lineIn);
//Create slot name, item name and decimal price from parsed line
string slotName = parsedLine[0];
string itemName = parsedLine[1];
decimal.TryParse(parsedLine[2], out decimal itemPrice);
//Create a new slot containing the read in item and place it in the list of slots
VendingMachineSlot vms = new VendingMachineSlot(slotName);
vms.PlaceItemInSlot(new VendingMachineItem(itemName, itemPrice));
slots.Add(vms);
}
}
return(slots);
}
/// <summary>
/// Writes out list of products to console
/// </summary>
public void DisplayProducts()
{
// Display Header categories
Console.Clear();
Console.WriteLine();
Console.WriteLine("SlotID" + "Snack".PadLeft(10) + "Price".PadLeft(21) + "Quantity".PadLeft(11));
Console.WriteLine();
// FOREACH loop per product in Inventory
foreach (string key in this.VM.Inventory.Keys)
{
VendingMachineSlot vms = this.VM.Inventory[key];
Product product = vms.HeldProduct;
// IF this product is in stock
if (vms.Quantity > 0)
{
Console.WriteLine($"{key.ToUpper().PadLeft(4)} - {product.Name.PadRight(22)} - ${product.Price.ToString().PadRight(7):C2} - {vms.Quantity}");
}
// ELSE the product is SOLD OUT
else
{
Console.WriteLine($"{key.ToUpper().PadLeft(4)} - {product.Name.PadRight(22)} - ${product.Price.ToString().PadRight(7):C2}SOLD OUT");
}
}
// Wait for user to continue
Console.WriteLine();
Console.WriteLine("Press any key to return to Menu.");
Console.ReadKey();
}
/// <summary>
/// Sets selected product ready for purchase.
/// </summary>
/// <param name="slotID">Slot ID of product.</param>
public void GiveProduct(string slotID)
{
VendingMachineSlot vms = this.Inventory[slotID];
Product product = vms.HeldProduct;
if (this.CurrentBalance >= product.Price)
{
string logAction = product.Name + " " + slotID.ToUpper();
vms.Quantity--;
this.CurrentBalance -= product.Price;
this.RW.LogAction(logAction, this.CurrentBalance + product.Price, this.CurrentBalance);
this.ProductsPurchased.Add(product);
}
}
private void Initialize()
{
SelectedSlot = new VendingMachineSlot();
Slots = new List <VendingMachineSlot>();
}
/// <summary>
/// initiates menu to get product from user
/// </summary>
public void GetProduct()
{
while (true)
{
Console.Clear();
Console.WriteLine("Enter a slotID for the product you would like to purchase?");
Console.WriteLine("(1) Display Products");
Console.WriteLine("(Q) Quit to Purchase Menu");
Console.WriteLine();
Console.Write("> Slot ID: ");
string choice = Console.ReadLine();
// IF the user wants to return to purchase menu
if (choice.ToLower() == "q")
{
// BREAK out of GetProduct to return
break;
}
if (choice == "1")
{
this.MM.DisplayProducts();
continue;
}
// IF the product does not exist in inventory
if (!this.VM.Inventory.ContainsKey(choice))
{
// THEN prompt user invalid input
Console.WriteLine();
Console.WriteLine("Invalid slotID. Press any key to return to Purchase Menu.");
Console.ReadKey();
return;
}
// Set VendingMachineSlot and product from user input
VendingMachineSlot vms = this.VM.Inventory[choice];
Product product = vms.HeldProduct;
// IF product is SOLD OUT
if (vms.Quantity < 1)
{
// PROMPT user product SOLD OUT
Console.WriteLine();
Console.WriteLine("Item is SOLD OUT. Press any key to return to Purchase Menu.");
Console.ReadKey();
return;
}
// IF not enough money to purchase
if (this.VM.CurrentBalance < product.Price)
{
// PROMPT user not enough money
Console.WriteLine();
Console.WriteLine("Not enough money to purchase. Press any key to return to Purchase Menu.");
Console.ReadKey();
return;
}
// Purchase product successful
this.VM.GiveProduct(choice);
return;
}
}
