-- This is a basic/simple dzVents script that is intended to detect dead or timed-out devices.
-- It is based on the script written by Benp:
-- https://easydomoticz.com/forum/viewtopic.php?f=28&t=8251&start=80#p69239
-- You can find a more complete script from Deufo here :
-- https://github.com/pipiche38/Domoticz-Zigbee-Wiki/blob/master/Contrib/CheckDeadDevices.lua




local devicesToCheck = {
  { ['name'] = 'Door Sensor ENOCEAN', ['DeviceIdx'] = 5 },  			-- add you device list here. First line is an example from my Domoticz.
	{ ['name'] = 'Device name 2', ['DeviceIdx'] = Idx2 },				-- find you devices IDx in Domoticz/Setup/Devices
	{ ['name'] = 'Device name 3', ['DeviceIdx'] = Idx3 },
	{ ['name'] = 'Device name 4', ['DeviceIdx'] = Idx4 },
	{ ['name'] = 'Device name 5', ['DeviceIdx'] = Idx5 },
	{ ['name'] = 'Device name 6', ['DeviceIdx'] = Idx6 }				-- last line does not have a ","
}


return
{
	on = {
     timer = {'at 11:50'},				-- Choose how often you want to check if devices are alive. I check it once a day at 11:50
     httpResponses = {'lastUP' }
	},

    execute = function(domoticz, item)
        print('trigger:' .. tostring(item.isTimer) .. '/' .. tostring(item.isHTTPResponse))

		for i, deviceToCheck in pairs(devicesToCheck) do
			local name = deviceToCheck['name']
			local DeviceIdx = deviceToCheck['DeviceIdx']


            if (item.isTimer) then
                domoticz.openURL({
                    url = 'http://127.0.0.1:8080/json.htm?type=command&param=getdevices&rid='..DeviceIdx..'',
                    method = 'GET',
                    callback = 'lastUP'
                })
            end
        end

            if (item.isHTTPResponse and item.ok) then
                local Time = require('Time')
                local results = item.json.result

                 for i, node in pairs(results) do
                    -- convert the time stamp in the raw data into a
                    -- dzVents Time object
                    local lastUpdate = Time(node.LastUpdate)
                    print(node.Name)
                    print('Hours ago: ' .. lastUpdate.hoursAgo)

                    if(lastUpdate.hoursAgo > 4) then  	-- Set the threshold to consider the device timed-out. Write here what you want to do if the device is timed-out.
                        local message = ""				-- I send a SMS to my phone using free-mobile SMS notifications feature.
                        message = message .. 'Device ' .. node.Name .. ' seems to be timed-out. Last seen: ' .. lastUpdate.hoursAgo ..' hours ago.'
                        domoticz.openURL('https://smsapi.free-mobile.fr/sendmsg?user=XXXXXXXX&pass=xxxxxxxxxxxxxx&msg= ' .. message .. ' ')
                    end
                end
            end
    end
}