function panic(reason)
  print("PANIC: "..reason)
  -- This will trigger a restart, but not immediately
  node.restart()
  while true do
--    print("waiting for restart..")
--    tmr.delay(1 * 1000 * 1000)
  end
end

local function on_cmd(cmd, args)
  print("on_cmd: "..cmd)
  for k, v in pairs(args) do
    print(k.."="..tostring(v))
  end

  mq_publish("cmd", "cmd="..cmd)
end

local function read_cfg(name)
  local filename = "cfg-"..name
  if not file.open(filename, "r") then
    panic("Could not read configuration file: "..filename)
  end
  local value = file.readline()
  file.close()
  if value == nil or #value == 0 then
    panic("Empty configuration file: "..filename)
  end
  return string.sub(value, 1, -2)
end

function main()
  local timers = {
    inter = 0,
    mqtt = 1
  }
  local wlan_ssid = read_cfg("wlan-ssid")
  local wlan_password = read_cfg("wlan-password")

  require('wlan')
  wlan_init(wlan_ssid, wlan_password)

  local client_id = "esp8266-"..wifi.sta.getmac()
  require('mq')
  mq_init(timers.mqtt, client_id)

  require('inter')
  inter_init(on_cmd)

  print("init done")
end