Tekkit Classic Reactor

--[[

yellow = uranium
gray = empty
blue = ice
green = on/off

]]--

function tabRem(tab, item)
 for k,v in pairs(tab) do
  if v == item then
    table.remove(tab, k)
  end
 end
end

function notify(text, timeout)
 term.setCursorPos(2, 18)
 term.clearLine()
 term.write(text)
 if tonumber(timeout) then
  sleep(timeout)
 else
  sleep(0.8)
 end
end

local users = fs.list("security")

 menu = {"Login"}

 function tabAdd(n)
 tab = {}
 defined = {"Login", "Logout", "Reactor", "Refuel", "Turn  On", "Turn Off", "Back",}
 for i=1, #n do
   table.insert(tab, defined[n[i]])
 end
  if selected > 1 then
   selected = #tab
  end
 return tab
end

local menuFunc = {
 ["Login"] = function()
  term.clear()
  term.setCursorPos(2, 2)
  term.write("User: ")
   user = read()
  if fs.exists("security/"..user) then
   file = fs.open(("security/"..user), "r")
    data = file.readAll()
   file.close()
   notify("Welcome "..user..", please write your password.")
  else
   notify("This user doesn't exist!")
   os.reboot()
  end

  term.setCursorPos(2, 4)
  term.write("Password: ")
   pass = read("*")
  if pass == data then
   pass, data = nil, nil
   n = {2, 3}
   menu = tabAdd(n)
   notify("Password is correct! Nice to see you!")
  else
   notify("Wrong password, try again later.")
   os.reboot()
  end
 end,
 ["Logout"] = function()
  notify("Logged out!")
  n = {1}
  menu = tabAdd(n)
 end,
 ["Reactor"] = function()
  n = {4,5,6,7}
  menu = tabAdd(n)
  notify("Reactor menu shown!")
 end,
 ["Turn  On"] = function()
  rs.setBundledOutput("back", colors.combine(rs.getBundledOutput("back"), colors.green))
  notify("Reactor Turned On!")
 end,
 ["Turn Off"] = function()
  rs.setBundledOutput("back", colors.subtract(rs.getBundledOutput("back"), colors.green))
  notify("Reactor Turned Off!")
 end,
 ["Refuel"] = function()
   rs.setBundledOutput("back", 0)
   notify("Emptying Reactor!")
  for i=1, 54 do
   rs.setBundledOutput("back", colors.combine(rs.getBundledOutput("back"), colors.gray))
   sleep(0.3)
   rs.setBundledOutput("back", colors.subtract(rs.getBundledOutput("back"), colors.gray))
   sleep(0.3)
  end
  sleep(0.1)
  notify("Loading Uranium!")
  for i=1, 45 do
   rs.setBundledOutput("back", colors.combine(rs.getBundledOutput("back"), colors.yellow))
   sleep(0.3)
   rs.setBundledOutput("back", colors.subtract(rs.getBundledOutput("back"), colors.yellow))
   sleep(0.3)
  end
  notify("Waiting 20 sec for the rest of Uranium!")
  sleep(20)
  notify("Pushing antarctica to Reactor!")
  for i=1, 9 do
   rs.setBundledOutput("back", colors.combine(rs.getBundledOutput("back"), colors.blue))
   sleep(0.3)
   rs.setBundledOutput("back", colors.subtract(rs.getBundledOutput("back"), colors.blue))
   sleep(0.3)
  end
  notify("Reactor seems to be stable!")
 end,
 ["Back"] = function()
  notify("Going back!")
  n = {2,3}
  menu = tabAdd(n)
 end,
}


selected = 1

repeat

 term.clear()

 for k,v in pairs(menu) do
  term.setCursorPos(2, k+1)
  if selected == k then
   term.write(string.char(194,59).." "..v)
  else
   term.write("  "..v)
  end
 end

 e, p1 = os.pullEvent()

 if p1 == 200 then
  selected = selected - 1
   if selected < 1 then
    selected = #menu
   end
 end

 if p1 == 208 then
  selected = selected + 1
   if selected > #menu then
    selected = 1
   end
 end

 if p1 == 28 then
  menuFunc[menu[selected]]()
 end

 sleep(0)

 until nil