chest.lua

-- Chest tampering detection system
-- 620eb42a98a955e79717d0f12d009c94a790d5b7

local side = "left"

local chest = peripheral.wrap(side)

while true do
  local s = textutils.serialize(chest.list())
  local evt = os.pullEvent()
  if evt == "redstone" then
    if rs.getInput(side) then
      print("Chest opened")
      repeat sleep(0.5) until not rs.getInput(side)
      if s == textutils.serialize(chest.list()) then
        print("Chest closed, no items taken")
      else
        print("Chest tampered")
      end
    end
  end
end