using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Assingment2SalesProgram
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.Red;
            Console.BackgroundColor = ConsoleColor.White;
            Console.WriteLine("Hello! This is simple login system!");
            Console.Write("Write your username here: ");
            string strUsername = Console.ReadLine();
            string strTUsername = "mason";
            if (strUsername == strTUsername)
            {
                Console.Write("Write your password here: ");

                string strPassword = Console.ReadLine();
                string strTPassword = "123";
                if (strPassword == strTPassword)
                {
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("You are logged in! Press Enter To Continue");
                    Console.ReadLine();

                }
                else
                {
                    Console.ForegroundColor = ConsoleColor.Gray;
                    Console.WriteLine("Bad password for user: {0}", strUsername);
                    Console.ReadLine();
                }
            }
            else
            {
                Console.WriteLine("Bad username!");
                Console.ReadLine();
            }


            List<double> price = new List<double>() { 5.99, 2.99, 4.20, 1.99, 4.45, 3.30, 5.20 };  //Declearing variable as a list
            List<double> total = new List<double>() { 0, 0, 0, 0, 0, 0, 0 };
            List<double> profit = new List<double>() { 0, 0, 0, 0, 0, 0, 0 };
            int quantity = 0; // USER ENTER
            int userproductnum = 0; // USER ENTER


            Console.ForegroundColor = ConsoleColor.Red;
            Console.BackgroundColor = ConsoleColor.White;
            Console.WriteLine("Welcome to XYZ LTD\n");
            Console.WriteLine("=====================================\n");
            Console.WriteLine("\n");
            Console.WriteLine("==============Product Menu=============\n");
            Console.WriteLine("\n");
            Console.ForegroundColor = ConsoleColor.Black;
            Console.WriteLine("1.Product Retail Price 5.99\n");
            Console.WriteLine("2.Product Retail Price 2.99\n");
            Console.WriteLine("3.Product Retail Price 4.20\n");
            Console.WriteLine("4.Product Retail Price 1.99\n");
            Console.WriteLine("5.Product Retail Price 4.45\n");
            Console.WriteLine("6.Product Retail Price 3.30\n");
            Console.WriteLine("7.Product Retail Price 5.20\n");
            while (quantity != -1) // Stating while value does not equal -1 go to cases
            {




                Console.WriteLine("Please enter Quantity followed by Product Number ; OR Enter -1 to get totals oR Quit THE program");
                quantity = Convert.ToInt32(Console.ReadLine());





                if (quantity != -1) // Stating while value does not equal -1 go to cases
                {



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

                    switch (userproductnum)
                    {
                        case 1:
                            total[0] += price.ElementAt(0) * quantity;

                            break;

                        case 2:
                            total[1] += price.ElementAt(1) * quantity;

                            break;
                        case 3:
                            total[2] += price.ElementAt(2) * quantity;

                            break;
                        case 4:
                            total[3] += price.ElementAt(3) * quantity;

                            break;
                        case 5:
                            total[4] += price.ElementAt(4) * quantity;

                            break;
                        case 6:
                            total[5] += price.ElementAt(5) * quantity;

                            break;
                        case 7:
                            total[6] += price.ElementAt(6) * quantity;

                            break;// cases for each product
                        default:
                            Console.WriteLine("you have entered an incorrect product number.");// ERROR HANDELLING when product number is incorrect.
                            break;

                    }
                }

            }

            Console.WriteLine("total sales for product 1 are {0:C2}\n", total.ElementAt(0));

            Console.WriteLine("total profit for product 1 are {0:C2}\n", profit.ElementAt(0));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 2 are {0:C2}\n", total.ElementAt(1));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 3 are {0:C2}\n", total.ElementAt(2));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 4 are {0:C2}\n", total.ElementAt(3));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 5 are {0:C2}\n", total.ElementAt(4));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 6 are {0:C2}\n", total.ElementAt(5));

            Console.WriteLine("===========================\n");

            Console.WriteLine("total sales for product 7 are {0:C2}\n", total.ElementAt(6));

            Console.WriteLine("===========================\n");

            Console.ReadLine();


        }
    }
}