os.loadAPI("button")
local m = peripheral.wrap("back")
local mx, my = m.getSize()
function getClick()
  local event, side, x, y = os.pullEvent()
  if event == "monitor_touch" then
    button.checkxy(x, y)
  end
end
function schutz()
  addText()
  --button.toggleButton("Schutz")
  if button.active("Schutz") then
   -- print("now on")
    rs.setOutput("left", false)
    button.standby()
    button.setName("Schutz", "Tuer Oeffnen")
  else
   -- print("now off")
    rs.setOutput("left", true)
    button.standby()
    button.setName("Schutz", "Tuer Geschlossen")
  end
  button.toggleButton("Schutz")
  button.save()
  addText()
end
function fillMainTable()
  m.clear()
  addText()
  button.clearTable()
  button.setTable("Schutz", schutz, "", 2, mx-1, 2, my-1, "Tuer Oeffnen")
  button.screen()
end
function addText()
  local text = "Letopia.Net System"
  local mx, my = m.getSize()
  m.setBackgroundColor(colors.black)
  m.setCursorPos((mx/2-#text/2)+1 , 1)
  m.write(text)
end
addText()
fillMainTable()
button.load()
while true do
  getClick()
end