if type(record)~="table" then record={} end
local function prompt(q,y,n) --a function we will be using to get a yes or no answer for anything, very usefull
while true do
  term.clear()
  term.setCursorPos(1,1)
  print(q.." ["..y.." | "..n.."]")
  local prompt=read()
  if prompt==y then
   return y
  elseif prompt==n then
   return n
  end
end
end
local function load(file) --a function to load the usernames from the file we saved last session
if fs.exists(file) then
  record["users"]=textutils.unserialize(io.open(file):read) -- I will explain this later
else
  print("user file not found")
  record["users"]={}
end
end
local function createuser(user, file) --add users to the list and save them to the file
if user==nil then
  print("Enter new username")
  local user=read()
end
term.clear()
term.setCursorPos(1,1)
print("enter password for "..user)
local pass=read("*")
record["users"][user]={}
record["users"][user]["password"]=pass
io.open(file,"w+"):write(textutils.serialize(record["users"]))
print("Username created")
end
local function login() --the actual login function
term.clear()
term.setCursorPos(1,1)
print("Enter your username")
record["username"]=read()
if record["users"][record["username"]]~=nil then
  term.clear()
  term.setCursorPos(1,1)
  print("Enter password for "..record["username"])
  local password=read("*")
  if record["users"][record["username"]]["password"]==password then
   print("LOGGED IN")
   return true
  else
   print("Incorrect password, restarting")
   sleep(2)
   reboot()
  end
else --if record["users"][record["username"]] is nil (not already in the database)
  local answer=prompt("username: "..record["username"].." not found, would you like to add it?","y","n")
  if answer=="y" then
   createuser(record["username"], "userfile")
   sleep(2)
   reboot()
  elseif answer=="n" then
   reboot()
  end
end
end