using System;

using System.IO;

​

namespace project2

{

    public class Program

    {

        public static int MenuChoice()

        {

            bool Error = false;

            int menuChoice = 0;

            do

            {

                Console.WriteLine("Welcome to the World's Best Tea Shop");

​

                Console.WriteLine("\t 1. Process a Single Order ");

                Console.WriteLine("\t 2. Process Multiple Orders From a File");

                Console.WriteLine("\t 3. Quit");

                Console.WriteLine("\t Enter Menu Choice (1, 2, or 3): ");

​

                // ask the user to enter what type of spray is being used

                menuChoice = Convert.ToInt32(Console.ReadLine());

​

                if (menuChoice == 1 || menuChoice == 2 || menuChoice == 3)

                {

                    Error = false;

                }

                else

                {

                    Error = true;

                    Console.WriteLine("\nERROR: INVALID MENU OPTION CHOSEN. TRY AGAIN.");

                    Console.WriteLine();

                }

            }

            while (Error == true);

            return menuChoice;

        }

        public static int TeaChoice()

        {

            bool Error = false;

            int teaType = 0;

            do

            {

                // asking for type of tea

                Console.WriteLine("\t 1 - Plain Tea");

                Console.WriteLine("\t 2 - Black Tea");

                Console.WriteLine("\t 3 - Green Tea");

                Console.WriteLine("\t 4 - White Tea");

                Console.WriteLine("\t Enter Choice of Tea: ");

​

                teaType = Convert.ToInt32(Console.ReadLine());

​

                // validate the input of the tea type

                if (teaType == 1 || teaType == 2 || teaType == 3 || teaType == 4)

                {

                    Error = false;

                }

                else

                {

                    Error = true;

                    Console.WriteLine("\nERROR: INVALID MENU OPTION CHOSEN. TRY AGAIN.");

                    Console.WriteLine();

                }

            }

            while (Error == true);

            return teaType;

        }

        public static int TeaSize()

        {

            bool Error = false;

            int size = 0;

            do

            {

                // asking for size of tea

                Console.WriteLine("Select a Size: ");

                Console.WriteLine("\t 1 - Small (8 oz) ");

                Console.WriteLine("\t 2 - Medium (16 oz) ");

                Console.WriteLine("\t 3 - Large (24 oz) ");

                Console.WriteLine("\t Enter Choice of Size: ");

​

                // ask the user to enter what size of tea is being purchased

                Console.Write("\t Select a Size: ");

                size = Convert.ToInt32(Console.ReadLine());

                // validate the input of the tea size

                if (size == 1 || size == 2 || size == 3)

                {

                    Error = false;

                }

                else

                {

                    Error = true;

                    Console.WriteLine("\nERROR: INVALID MENU OPTION CHOSEN. TRY AGAIN.");

                    Console.WriteLine();

                }

            }

            while (Error == true);

            return size;

        }

        public static void Main()

        {

            // variables for the tea

            int menuChoice; // variables to hold the menu choice

            int teaType;

            int size;

            string custName;

            int small = 8; // variable to hold the oz for a size small

            int medium = 16; // variable to hold the oz for a size medium

            int large = 24; // variable to hold the oz for a size large

​

            // constants for the first part

            decimal price; // variable to hold the price of an item

            decimal salesTax; // variable to hold the tax of the purchase

            decimal total; // variable to hold the total amount of the purchase

            const double plain = 0.43; // named constant to hold the price for 7 inch records

            const double black = 0.53; // named constant to hold the price for more than three 7 inch records

            const double green = 0.65; // named constant to hold the price for 12 inch records

            const double white = 0.78; // named constant to hold the price for more than three 7 inch records

            const decimal tax = .045m; // named constant to hold the tax for each purchase

​

            // information for the file

            string fileName = "orders.txt";

            string names;

            int teaChoice;

            int teaSize;

            decimal prices;

            decimal saleTax;

            decimal orderTotal;

            // Start with the menu

            menuChoice = MenuChoice();

            if(menuChoice == 1) // Single Order

            {

                teaType = TeaChoice();

                size = TeaSize();

                            // asking for the customers name

            Console.WriteLine("Enter the name of the customer: ");

            string name = Console.ReadLine();

            Console.WriteLine("Name on order: " + name);

​

            // calculations based on tea type and size

            if (teaType == 1)

            {

                // plain tea

                if (size == 1)

                    price = (decimal)(plain * 8.0); // small

                else if (size == 2)

                    price = (decimal)(plain * 16.0); // medium

                else

                    price = (decimal)(plain * 24.0); // large

            }

            else if (teaType == 2)

            {

                // black tea

                if (size == 1)

                    price = (decimal)(black * 8.0); // small

                else if (size == 2)

                    price = (decimal)(black * 16.0); // medium

                else

                    price = (decimal)(black * 24.0); // large

            }

            else if (teaType == 3)

            {

                // green tea

                if (size == 1)

                    price = (decimal)(green * 8.0); // small

                else if (size == 2)

                    price = (decimal)(green * 16.0); // medium

                else

                    price = (decimal)(green * 24.0); // large

            }

            else

            {

                // white tea

                if (size == 1)

                    price = (decimal)(white * 8.0); // small

                else if (size == 2)

                    price = (decimal)(white * 16.0); // medium

                else

                    price = (decimal)(white * 24.0); // large

            }

​

            // calculate the sales tax

            salesTax = price * tax;

​

            // calculate the total

            total = price * salesTax;

​

            // output

            Console.WriteLine("\nName on order: {0}", name);

            Console.WriteLine("Price of Tea: {0}", price.ToString("c"));

            Console.WriteLine("Sales Tax: {0}", salesTax.ToString("c"));

            Console.WriteLine("Order Total: {0}", total.ToString("c"));

            }

            else if (menuChoice == 2) // Multiple Orders

            {

                            // file reader object

                StreamReader sr = new StreamReader(fileName);

​

                // process the file for necessary information

                while (!sr.EndOfStream)

                {

​

                    // read the name on the order

                    names = sr.ReadLine();

​

                    // read the tea choice

                    teaChoice = int.Parse(sr.ReadLine());

​

                    // read the size choice

                    teaSize = int.Parse(sr.ReadLine());

​

                    // calculate the prices

                    prices = teaChoice * teaSize;

​

                    // calculate the sale tax

                    // calculate the sales tax

                    saleTax = prices * tax;

​

                    // calculate the total

                    orderTotal = prices * saleTax;

​

                    // read the blank line

                    sr.ReadLine();

​

                    // display the order information

                    Console.WriteLine("\nName on order: {0}", names);

                    Console.WriteLine("Price of Tea: {0}", prices.ToString("c"));

                    Console.WriteLine("Sales Tax: {0}", saleTax.ToString("c"));

                    Console.WriteLine("Order Total: {0}", orderTotal.ToString("c"));

​

                }

​

            }

            else if (menuChoice == 3) // Quit

            {

            }

​

        }

    }

}