rednet.open("left")

function requestName()
  rednet.send(24, "newName")
  id, name = rednet.receive()
  return name
end

function getNewBooks()
  while turtle.suckUp() do
    name = requestName()
    turtle.dropDown()
    books = fs.open("books","a")
    books.writeLine(name)
    books.flush()
    books.close()
  end
end


function giveBookNames()
  getNewBooks()
  books = fs.open("books","r")
  bookNames = {}
  i = 1
  l = books.readLine()
  while (l ~= nil) do
    if (l ~= "") then bookNames[i]= l
    i = i+1
    l = books.readLine()
  end
  return bookNames
end

while true do
	senderID, data = rednet.receive()
	if data == "refreshAll" then
		bookNames = getNewBooks()
	else if data == "refreshNew" then
		bookNames = getNewBooks()
	end
	rednet.send(24, bookNames)
end