local commands = {
  collect = function()
    modem.broadcast(port, "ping")

    print("Collecting devices...")
    local function registerDevice(signal, _, remoteAddress, _, _, payload)
      print(remoteAddress)
      devices.insert(remoteAddress)
      print(devices)
    end

    event.listen("modem_message", registerDevice)
    event.timer(5, function()
      event.ignore("modem_message", registerDevice)
      event.push("command_executed")
      print(#devices .. " devices found!")
    end)
  end
}

while true do
  local input = io.read()

  if input == "quit" or input == "q" then quit() end

  if commands[input] == nil then
    print("Command not found!")
  else
    pcall(commands[input])
    event.pull("command_executed")
    print("")
  end
end