os.loadAPI("ocs/apis/sensor")
local sensor = sensor.wrap("left")
local targets = sensor.getTargets()

while true do
  local details = sensor.getTargetDetails("-1,0,0")
  local item = targets.getStackInInternalSlot(1)
  if item then
	print("Item name: ", item.name)
	print("Item count: ", item.size)
	print("Item damage: ", item.damage)
  else
	print("Slot " .. slot .. " is empty")
  end
end