Telldus Lua program for power cycling

PowerCycle.lua

-- File: PowerCycle.lua
-- Call with (e.g.): curl -s -X GET 'http://<ip_address>/api/lua/call?script=PowerCycle&function=powerCycle&deviceName=<device_name>&initialDelaySec=<seconds>&delaySec=<seconds>' -H 'Authorization: Bearer <access_token>'

-- File: PowerCycle.lua

local ON = 1
local OFF = 2
local deviceManager = require "telldus.DeviceManager"
local nRetries = 3
local retryDelayMs = 1000
local deviceToPowerCycle = nil
local nameOfDeviceToPowerCycle = nil
local defaultPowerCycleInitialDelaySec = 0
local defaultPowerCycleDelaySec = 10
local powerCycleInitialDelayMs = defaultPowerCycleDelaySec * 1000
local powerCycleDelayMs = defaultPowerCycleDelaySec * 1000

function powerCycle(args)
	nameOfDeviceToPowerCycle = args["deviceName"]
	if (nameOfDeviceToPowerCycle == nil) then
		return
	end
	deviceToPowerCycle = deviceManager:findByName(nameOfDeviceToPowerCycle)
	if (deviceToPowerCycle == nil) then
		return
	end
	local powerCycleInitialDelaySec = args["initialDelaySec"]
	if (powerCycleInitialDelaySec ~= nil) then
		powerCycleInitialDelayMs = (powerCycleInitialDelaySec * 1000)
	end
	local powerCycleDelaySec = args["delaySec"]
	if (powerCycleDelaySec ~= nil) then
		powerCycleDelayMs = (powerCycleDelaySec * 1000) - (nRetries*retryDelayMs)
	end
	if (powerCycleDelayMs < 0) then
		powerCycleDelayMs = 2000;
	end
	if (powerCycleInitialDelayMs > 0) then
		sleep(powerCycleInitialDelayMs)
	end
	print("Power cycling device %s (id: %s)...", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
	if (deviceToPowerCycle:state() == OFF) then
		print(" Turning on device %s (id: %s)...", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
		for i=1,nRetries do
			deviceToPowerCycle:command("turnon", nil, "PowerCycle.lua")
			sleep(retryDelayMs)
		end
		print(" Sleeping for %d milliseconds...", powerCycleDelayMs)
		sleep(powerCycleDelayMs)
		print(" Turning off device %s (id: %s)...", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
		for i=1,nRetries do
			deviceToPowerCycle:command("turnoff", nil, "PowerCycle.lua")
			sleep(retryDelayMs)
		end
	elseif (deviceToPowerCycle:state() == ON) then
		print(" Turning off device %s (id: %s)...", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
		for i=1,nRetries do
			deviceToPowerCycle:command("turnoff", nil, "PowerCycle.lua")
			sleep(retryDelayMs)
		end
		print(" Sleeping for %d milliseconds...", powerCycleDelayMs)
		sleep(powerCycleDelayMs)
		print(" Turning on device %s (id: %s)...", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
		for i=1,nRetries do
			deviceToPowerCycle:command("turnon", nil, "PowerCycle.lua")
			sleep(retryDelayMs)
		end
	end
	print("Power cycling of device %s (id: %s) completed.", nameOfDeviceToPowerCycle, deviceToPowerCycle:id())
end