startup

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

--define functions
osScreenSizeX, osScreenSizeY = term.getSize()
function osFillBG(selColor)
  paintutils.drawFilledBox(1,1,osScreenSizeX,osScreenSizeY,selColor)
  term.setCursorPos(1,1)
  term.setBackgroundColor(selColor)
  if selColor == colors.white then
    term.setTextColor(colors.black)
  else
    term.setTextColor(colors.white)
  end
end

function osBSOD(message, cause, tips)
  osFillBG(colors.blue)
  print("Critical System Error!")
  print(message)
  print(cause)
  print(tips)
  print("")
  print("Press any key to continue.")
  sleep(2)
  local blank1, blank2 = os.pullEvent()
end

--check if on advanced
if term.isColor() then else
  print("Incompatible Computer!")
  print("Continuing into CraftOS...")
  return
end

--boot to craftos recovery
osFillBG(colors.cyan)
os.sleep(2)

--login script
if fs.exists("system/login") then
  osFillBG(colors.black)
  shell.run("system/login")
else
  if fs.exists("disk/system/login") then
    print("Found login file on disk.")
    print("Copying from disk...")
    fs.copy("disk/system/login","system/login")
    print("Copy complete! Shutting Down...")
    sleep(3)
  else
    osBSOD("Critical file missing.","/system/login is missing, and is needed to run.","Please re-install this file")
  end
end

--os shutdown
--os.shutdown()