bank

using System;
using System.Collections.Generic;

namespace BankAccountDemo
{
    public class Program
    {
        static void Main(string[] args)
        {
            var bank = new Bank();
            bank.Run();
        }
    }

    public class Bank
    {
        private List<Account> accounts = new List<Account>();
        private bool running = true;

        public void Run()
        {
            Console.WriteLine("Welcome to the Simple Bank System!");

            while (running)
            {
                Console.WriteLine("\nPlease choose an option:");
                Console.WriteLine("1. Create a new account");
                Console.WriteLine("2. Deposit");
                Console.WriteLine("3. Withdraw");
                Console.WriteLine("4. Print all accounts");
                Console.WriteLine("5. Exit");

                switch (Console.ReadLine())
                {
                    case "1":
                        CreateAccount();
                        break;
                    case "2":
                        MakeDeposit();
                        break;
                    case "3":
                        MakeWithdrawal();
                        break;
                    case "4":
                        PrintAccounts();
                        break;
                    case "5":
                        running = false;
                        break;
                    default:
                        Console.WriteLine("Invalid option, try again.");
                        break;
                }
            }

            Console.WriteLine("Thank you for using the Simple Bank System. Goodbye!");
        }

        private void CreateAccount()
        {
            Console.Write("Enter the account holder's name: ");
            string name = Console.ReadLine();
            Console.Write("Enter the initial balance: ");
            decimal initialBalance = decimal.Parse(Console.ReadLine());

            var account = new Account(name, initialBalance);
            accounts.Add(account);

            Console.WriteLine($"Account for {name} created with account number {account.Number} and balance {account.Balance:C}.");
        }

        private void MakeDeposit()
        {
            var account = FindAccount();
            if (account == null) return;

            Console.Write("Enter the amount to deposit: ");
            decimal amount = decimal.Parse(Console.ReadLine());
            account.Deposit(amount);

            Console.WriteLine($"Deposit successful. New balance is {account.Balance:C}.");
        }

        private void MakeWithdrawal()
        {
            var account = FindAccount();
            if (account == null) return;

            Console.Write("Enter the amount to withdraw: ");
            decimal amount = decimal.Parse(Console.ReadLine());
            bool success = account.Withdraw(amount);

            if (success)
            {
                Console.WriteLine($"Withdrawal successful. New balance is {account.Balance:C}.");
            }
            else
            {
                Console.WriteLine("Withdrawal failed. Insufficient funds.");
            }
        }

        private void PrintAccounts()
        {
            Console.WriteLine("Account List:");
            foreach (var account in accounts)
            {
                Console.WriteLine(account);
            }
        }

        private Account FindAccount()
        {
            Console.Write("Enter the account number: ");
            int accountNumber = int.Parse(Console.ReadLine());
            var account = accounts.Find(a => a.Number == accountNumber);

            if (account == null)
            {
                Console.WriteLine("Account not found.");
            }

            return account;
        }
    }

    public class Account
    {
        private static int accountNumberSeed = 1234567890;
        public string Name { get; }
        public decimal Balance { get; private set; }
        public int Number { get; }

        public Account(string name, decimal initialBalance)
        {
            Name = name;
            Balance = initialBalance;
            Number = accountNumberSeed++;
        }

        public void Deposit(decimal amount)
        {
            Balance += amount;
        }

        public bool Withdraw(decimal amount)
        {
            if (amount <= Balance)
            {
                Balance -= amount;
                return true;
            }

            return false;
        }

        public override string ToString()
        {
            return $"Account {Number} - {Name}, Balance: {Balance:C}";
        }
    }
}