// Display more info to user and allow them to buy the power and / or go back to the main menu
public static void Purchase(Power power, List <Power> powers, List <Power> BoughtPowers)
{
Console.Clear();
Console.WriteLine($"Power name: {power.Name}" +
$"\nCategory: {power.Category}" +
$"\nDescription: {power.Description}" +
$"\nPrice: {Math.Round(power.Price, 2)}");
Console.WriteLine("\nPlease select an action:" +
"\n1) Buy" +
"\n2) Main Menu");
int index = 0;
Validator.IsInRangeIndex(Console.ReadLine(), 1, 2, out index);
if (index == 0) // user selects "1"
{
while (true)
{
Console.WriteLine("How many would you like to buy?" +
"\n\nEnter quantity or enter 'M' for main menu:");
int quantity = 0;
string uChoice = Console.ReadLine().ToUpper();
if (uChoice == "M")
{
Console.Clear();
// If user changes their mind, they can return to Main Menu without buying the power.
MenuView.DisplayMenu(powers, BoughtPowers);
break;
}
else
{
if (int.TryParse(uChoice, out quantity))
{
if (quantity == 0)
{
Console.WriteLine("Back to Main Menu.");
MenuView.DisplayMenu(powers, BoughtPowers);
break;
}
else if (quantity > 0)
{
// If the user buys something, update the SubTotal and add the bought power to the list BoughtPowers
// and return to Main Menu.
double total = VendingMachine.CalculateSubTotal(quantity, power);
for (int i = 0; i < quantity; i++)
{
BoughtPowers.Add(power);
}
Console.WriteLine($"Total purchase comes to ${total}. Press any key to return to main menu...");
Console.ReadKey();
Console.Clear();
MenuView.DisplayMenu(powers, BoughtPowers);
break;
}
else
{
Console.WriteLine("Please enter a positive whole number");
continue;
}
}
}
}
}
// If the user doesn't want to buy the power after getting more info, they can go back to the Main Menu
else if (index == 1) // user selects "2"
{
Console.Clear();
MenuView.DisplayMenu(powers, BoughtPowers);
}
else // Should never get here...
{
Console.WriteLine("Error");
}
}