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

namespace BankSystem
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a Bank object, add some accounts, do some operations, and then save the accounts.
            Bank theBank = new Bank();

            theBank[123] = new BankAccount("John");
            theBank[456] = new BankAccount("Mary");
            theBank[789] = new BankAccount("Sam");

            BankAccount acc1 = theBank[123];
            acc1.Deposit(100);
            acc1.Deposit(300);
            acc1.Withdraw(200);

            BankAccount acc2 = theBank[456];
            acc2.Deposit(1000);
            acc2.Deposit(3000);
            acc2.Withdraw(2000);

            BankAccount acc3 = theBank[789];
            acc3.Deposit(10000);
            acc3.Deposit(30000);
            acc3.Withdraw(20000);

            theBank.SaveAccounts();

            // Create a different Bank object, load in the accounts, and verify they've been loaded in correctly.
            Bank anotherBank = new Bank();
            anotherBank.LoadAccounts();

            if (anotherBank.ContainsAccountID(123))
            {
                Console.WriteLine("Account 123: {0}", anotherBank[123]);
            }

            if (anotherBank.ContainsAccountID(456))
            {
                Console.WriteLine("Account 456: {0}", anotherBank[456]);
            }

            if (anotherBank.ContainsAccountID(789))
            {
                Console.WriteLine("Account 789: {0}", anotherBank[789]);
            }
            Console.ReadLine();
        }
    }
}