class ATM

 def start(config)
    customer = Customer.new("","","","")
	customer.account = customer.get_account
    if customer.existing_account?(config,customer.account)
       customer.password = customer.get_password
      if customer.verified_password?(config,customer.account,customer.password)
          customer.name = customer.get_name(config,customer.account)
          customer.balance = customer.get_balance(config,customer.account)
        puts "Hello, #{customer.name}!"
        #menu(config,account,customer)
      else puts "ERROR: ACCOUNT NUMBER AND PASSWORD DON'T MATCH"
        start(config)
      end
    else puts "ERROR: ACCOUNT NUMBER NOT FOUND"
        start(config)
    end
 end


end


class Customer

 attr_accessor :account, :password, :name, :balance

 def initialize(account,password,name,balance)
  @accont = account
  @password = password
  @name = name
  @balance = balance
 end

 def get_account
     print "Please Enter Your Account Number: "
     acc = gets
     account = acc.to_i
 end

 def existing_account?(config,account)
       return true if config['accounts'].has_key?(account)
       false
 end

 def get_password
     print "Please Enter Your Password: "
     pass = gets
     pasword = pass.chomp
 end

 def verified_password?(config,account,password)
     return true if config['accounts'][account]['password'] == password
     false
 end

 def get_name(config,account)
     name = config['accounts'][account]['name']
 end

 def get_balance(config,account)
    balance = config['accounts'][account]['balance']
 end

end

config = {"banknotes"=>{500=>0, 200=>0, 100=>2, 50=>1, 20=>2, 10=>4, 5=>1, 2=>0, 1=>2}, "accounts"=>{3321=>{"name"=>"Volodymyr", "password"=>"mypass", "balance"=>422}, 5922=>{"name"=>"Iryna", "password"=>"1111", "balance"=>5301}}}

atm = ATM.new
atm.start(config)