Book Enchanter

xp = peripheral.wrap("left")
xp.setAutoCollect(true)
term.clear()
elvl = 30
turtle.select(1)
n = 1

function swrite(str,x,y)
	term.setCursorPos(x,y)
	term.write(str)
end

function swritecenter(str,y)
	term.setCursorPos(w/2 - #str/2,y)
	term.write(str)
end

function cline(y)
	term.setCursorPos(1,y)
	term.clearLine()
end

function getBook()
	first = true
	turtle.select(1)
	turtle.suckDown()
	while turtle.getItemCount(1) == 0 do
		if first then
			cline(2)
			swrite("Ran out of books.",1,2)
			first = false
		end
		os.sleep(3)
		turtle.suckDown()
	end
	if turtle.getItemCount(1) > 1 then
		turtle.transferTo(2,turtle.getItemCount(1)-1)
		turtle.select(2)
		turtle.dropDown()
		turtle.select(1)
	end
end

while true do
	os.sleep(3)
	if xp.getLevels() >= 30 then
		getBook()
		xp.enchant(elvl)
		turtle.drop()
		cline(2)
		swrite("Enchanted book #"..n,1,2)
		n = n + 1
	end
	cline(1)
	swrite("Enchanting lvl 30 books. CLvl: "..xp.getLevels(),1,1)
end