function banner()
    print("Welcome to SwatDoge's chat program")
    print("")
end

function cls()
    term.clear()
    term.setCursorPos(1, 1)
end

function name()
    account_name = user
    cls()
    write("What would you like your name to be? ")
    account_name = read()
    password()
end

function password()
    account_password = admin
    cls()
    write("Welcome "..account_name..", Type a password you'd want to use: ")
    write("")
    account_password = read()
    cls()
    login()
end

function first_name()
    if account_name == nil then
      name()
    else
      print(name)
      cls()
      login()
    end
end

function login()
    local account_name_check
    local account_password_check
    print("Login with your information.")
    write("Username: ")
    account_name_check = read()
    write("Password: ")
    account_password_check = read()

    if (account_name_check == account_name) and (account_password_check == account_password) then
      cls()
      chat()
    else
      cls()
      print("wrong username or password")
      login()
    end
    end

    function chat()
      write("send your message: ")
      message = read()
    if message ~= nil then
      rednet.send(21, account_name .. ": " .. message)
    end
    end

    while true do
      id, reply = rednet.receive("swatdoge")
      print(reply)
    end

      message = nil
      chat()
    end
  end

if pocket then
  rednet.open("back")
else
  rednet.open("top")
end

local account_password
local account_name
banner()
first_name()