startup

rednet.open("right")

term.clear()
term.setCursorPos(1,1)

local username, password

print("Withdraw Cash")
print("---------------------------------------------------")
print("")
io.write("Username: ")
username = io.read()
print("")
io.write("Password: ")
password = read("*")

rednet.send(0, username, "getAccount")

local senderId, message, protocol = rednet.receive()

term.clear()
term.setCursorPos(1,1)
if message == "dns" then
  print("User does not exist. Please create an account")
  sleep(2)
  os.reboot()
end

if password == message[3] then
   local done = false
   while not done do
      term.clear()
      term.setCursorPos(1,1)
      print("Current Balance: "..message[4].."$")
      print("---------------------------------------------------")
      print("")
      print("Please enter the amount you wish to withdraw")
      print("Enter 'exit' to exit")
      print("")
      io.write("Amount to withdraw: ")
      local amount = io.read()

      if amount == "exit" then
        os.reboot()
      end
      if tonumber(amount) == nil then
        term.clear()
        term.setCursorPos(1,1)
        print("Please enter a number...")
        sleep(2)
      else
        amount = tonumber(amount)
        if amount > message[4] then
          term.clear()
          term.setCursorPos(1,1)
          print("You have insufficient funds")
          sleep(2)
        else
          rednet.send(10, {message[2], amount}, "withdraw")

          local senderId, success, protocol = rednet.receive()

          term.clear()
          term.setCursorPos(1,1)
          if success == true then
            rednet.send(0, {username, message[4] - amount}, "editBalance")
            print("Withdrawal complete...")
            print("New balance: "..message[4] - amount.."$")
            print("")
            print("Press any key to continue...")

            os.pullEvent("key")
            os.reboot()
          else
            print("Withdrawal failed...")
            print("Perhaps you spelled your MC name wrong.")
            print("Press any key to continue...")
            os.pullEvent("key")
            os.reboot()
          end
        end
      end
   end
else
  print("Incorrect password. Please try again")
  sleep(2)
  os.reboot()
end