static void Main(string[] args)
{
//number of items which can be added in inventory, can be any number
var numberOfItems = 100;
var userInput = string.Empty;
//to indicate if adding items to inventory is finished
bool stageOneFinished = false;
var currentCart = new List <InventoryModel> {
};
//derived classed initialization
InventoryStore inventory = new InventoryStore();
Cart shoppingCart = new Cart(inventory.items);
//loop so console application doesn't get closed
for (int i = 0; i < numberOfItems; i++)
{
if (!stageOneFinished)
{
//display message just once, on opening app
if (i == 0)
{
Console.WriteLine("Add items to inventory in expected input format: \nADD sku(number) name(string) quantity(number) price(number i.e 3.5)");
}
//read user input
userInput = Console.ReadLine().ToUpper();
//check for user command ADD
if (userInput.Contains("ADD"))
{
//check number of elements in user input, splitted by space
if (userInput.Split(' ').Length == 5)
{
int sku, quantity;
float price;
//try parse array elements
bool convertSku = int.TryParse(userInput.Split(' ')[1], out sku);
string name = userInput.Split(' ')[2].ToLower();
bool convertQuantity = int.TryParse(userInput.Split(' ')[3], out quantity);
bool convertPrice = float.TryParse(userInput.Split(' ')[4].Replace('.', ','), out price);
//check if all elements are succesfully parsed, if yes call add method
if (convertSku && convertQuantity && convertPrice)
{
inventory.Add(sku, name, quantity, price);
}
else
{
Console.WriteLine("Add item in expected input format!");
}
}
else
{
Console.WriteLine("Some input parameters missing!");
}
}
//user END command
else if (userInput.Contains("END"))
{
inventory.End();
//set stage one to finished
stageOneFinished = true;
userInput = string.Empty;
}
}
else
{
//display message just once, on proceeding to stage two
if (inventory.items.Count == i - 1)
{
Console.WriteLine("Additem to the current shopping cart in expected input format: \nADD sku(number) quantity(number)");
}
userInput = Console.ReadLine().ToUpper();
if (userInput.Contains("ADD"))
{
if (userInput.Split(' ').Length == 3)
{
int sku, quantity;
bool convertSku = int.TryParse(userInput.Split(' ')[1], out sku);
bool convertQuantity = int.TryParse(userInput.Split(' ')[2], out quantity);
if (convertSku && convertQuantity)
{
currentCart = shoppingCart.Add(sku, quantity);
}
else
{
Console.WriteLine("Add item in expected input format!");
}
}
else
{
Console.WriteLine("Some input parameters missing!");
}
}
else if (userInput.Contains("REMOVE"))
{
if (userInput.Split(' ').Length == 3)
{
var sku = int.Parse(userInput.Split(' ')[1]);
var quantity = int.Parse(userInput.Split(' ')[2]);
currentCart = shoppingCart.Remove(sku, quantity);
}
}
//call cart checkout method
else if (userInput.Contains("CHECKOUT"))
{
shoppingCart.Checkout(currentCart);
}
//exist console app
else if (userInput.Contains("END"))
{
shoppingCart.End();
}
}
}
}