tos

local shell = _G.shell
os.loadAPI("uap")
local sx,sy = term.getSize()
local function mainButton()
  while true do
  if uap.getU() == true then
  term.setTextColor(colors.white)
  term.setBackgroundColor(colors.black)
  for i=1,sx do
    term.setCursorPos(i,1)
    term.write(" ")
  end
  term.setCursorPos(1,1)
  local time = os.time()
  local formattedTime = textutils.formatTime(time, false)
  write(formattedTime)
  local isRO = false
  for k,v in pairs(redstone.getSides()) do
    if (rednet.isOpen(v)) then
      isRO = true
    end
  end
  local texxt = nil
  if (isRO) then
    texxt = "Rednet: OK"
  else
    texxt = "Rednet: OFF"
  end
  term.setCursorPos(sx-string.len(texxt),1)
  term.write(texxt)
  for i=1,sx do
    term.setCursorPos(i,sy)
    term.write(" ")
  end
  term.setCursorPos(sx/2+1,sy)
  write("O")
  uap.setU(false)
  end
  os.sleep(0.1)
  end
end
local function click()
  while true do
    local event, button, x, y = os.pullEvent( "mouse_click")
    if (y == sy and uap.getU() ~= "terminate") then
      os.reboot()
    end
  end
end
local namev = nil
function sopen(name)
    local file = fs.open(name, "r")
    if file then
      local env = setmetatable({},{__index=_G})
      print(name)
      local ok, msg = pcall(loadfile(name,env))
      if not ok then
        term.setBackgroundColor(colors.red)
        term.clear()
        term.setCursorPos(2,2)
        term.write("CODE ERROR OCCURED!")
        term.setCursorPos(3,5)
        term.write(name.." crashed! Message: ")
        term.setCursorPos(2,7)
        msg = msg:gsub("tos:56:", name..":")
        print(msg)
        term.setCursorPos(2,15)
        term.write("Any key to restart...")
        os.pullEvent("char")
        os.reboot()
      end
    else
      term.clear()
        term.setBackgroundColor(colors.blue)
        term.clear()
        term.setCursorPos(2,2)
        term.write("FILE ERROR OCCURED!")
        term.setCursorPos(3,5)
        term.write("There is no such app!")
        term.setCursorPos(2,7)
        print("Fix solution: Use Updater to download it!")
        term.setCursorPos(2,15)
        term.write("Any key to go back...")
        os.pullEvent("char")
        os.reboot()
    end
end
local function open()
  sopen(namev)
end
function openFile(name,safe)
  namev = name
  if safe then open() else
  parallel.waitForAny(click,open,mainButton)
  end
end
function writePersistentVariable(variable,value)
  local f = fs.open(".variables/"..variable,"w")
  f.write(value)
  f.close()
end
function getPersistentVariable(variable)
  local f = fs.open(".variables/"..variable,"r")
  if f then
  value = f.readAll()
  f.close()
  return value
  else return nil end
end