local comp = require("component")
local thread = require("thread")

local modem = comp.modem
local port = 1

local PING = "ping"
local devices = {}

local commands = {
  collect = function()

    local collect_thread = thread.create(function()
      print("Collecting devices...")
      modem.broadcast(port, PING)
      while true do
        local _, _, remoteAddress, _, _, payload = event.pull("modem_message")
        table.insert(devices, remoteAddress)
      end
    end)

    os.sleep(5)
    collect_thread:kill()
  end
}

while true do
  local input = io.read()

  if input == "quit" or input == "q" then os.exit(0) end

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