Melee XP Turtle Auto-Enchanter

if not fs.exists("startup") then
 fs.copy("disk/startup", "startup")
end
m = peripheral.wrap("right")
m.setAutoCollect(true)
while true do
 turtle.attack()
 local xp = m.getLevels()
 local rawXP = m.getXP()
 local kills = rawXP/5
 term.clear()
 term.setCursorPos(14,5)
 print("Level: "..xp.."/30")
 local x = 2
 if xp <= 15 then
  local nextLevel = 17 * (xp+1)
  term.setCursorPos(9,6)
  print("Current RawXP: "..rawXP.."/"..nextLevel)
  term.setCursorPos(9,7)
  print("Estimated Kills: "..kills)
  repeat
   turtle.select(x)
   turtle.dropDown()
   x = x + 1
  until x == 16
 elseif xp <= 29 then
  local level = xp + 1
  local nextLevel = 1.5 * level * level - 29.5 * level + 360
  term.setCursorPos(9,6)
  print("Current RawXP: "..rawXP.."/"..nextLevel)
  term.setCursorPos(9,7)
  print("Estimated Kills: "..kills)
  repeat
   turtle.select(x)
   turtle.dropDown()
   x = x + 1
  until x == 16
 elseif xp >= 30 then
  turtle.select(1)
  m.enchant(30)
  local x = 1
  repeat
   local nonBook = turtle.getItemSpace(x)
   turtle.select(x)
   turtle.dropDown()
   turtle.select(16)
   local compare = turtle.compareTo(1)
   if not compare then
    turtle.transferTo(1,1)
   end
   x = x + 1
  until x == 16
 end
end