Domoticz

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	data = {
		lightLevel = { history = true, maxItems = 20 }
	},

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			lightLevelData = domoticz.data['lightLevel']
			for i = 1, (lightLevelData.size == 0 and XXXXXXXXXXXXXXXXXXXX or 1) do
				lightLevelData.add((TEST_MODE_LIGHT_READING == 0
					and domoticz.devices[LIGHT_SENSOR].lux or TEST_MODE_LIGHT_READING))
			end

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	local maxItems = 20 --this var is available in the entire module scope
	
	return {
		active = true,
		on = {},
		data = {
			lightLevel = { history = true, maxItems = maxItems }
		},
		execute = function() 
			for i = 1, (lightLevelData.size == 0 and maxItems or 1) do
			end
		end
	}		 

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--[[
lightingMood.lua by BakSeeDaa
Version 0.0.1
--]]
local LIGHT_SENSOR = 'South-southwest Light Level'
local LIGHT_LEVEL_DARK = 60 -- At this level and below, outdoor illumination is lit and shades are closed
local LIGHT_LEVEL_BRIGHT = 860 -- No illumination needed above this value
local TEST_MODE_LIGHT_READING = 0 -- Set to a value between 1 and 55000. Set to 0 to disable test mode
-- Shady is between LIGHT_LEVEL_DARK and LIGHT_LEVEL_BRIGHT
local LIGHTLEVEL_READINGS = 20

return {
	active = true,
	on = {
		LIGHT_SENSOR,
		['timer'] = 'every minute'
	},
	data = {
		lightLevel = { history = true, maxItems = LIGHTLEVEL_READINGS }
	},
	execute = function(domoticz, windDevice, triggerInfo)
		local LOG_LEVEL = domoticz.LOG_INFO -- Script default log level. You may change this.

		if (triggerInfo.type == domoticz.EVENT_TYPE_TIMER) then
			-- Timer event occurred

			-- Store the current light level value in the persistant data
			lightLevelData = domoticz.data['lightLevel']
			for i = 1, (lightLevelData.size == 0 and LIGHTLEVEL_READINGS or 1) do
				lightLevelData.add((TEST_MODE_LIGHT_READING == 0
					and domoticz.devices[LIGHT_SENSOR].lux or TEST_MODE_LIGHT_READING))
			end

			--domoticz.log('The latest stored light level: '..lightLevelData.getLatest().data, LOG_LEVEL)

			local avg1 = lightLevelData.avg(1, lightLevelData.size/2)
			local avg2 = lightLevelData.avg(lightLevelData.size/2+1, lightLevelData.size)
			domoticz.log('I would like to believe that the light level trend is '..(avg1 >= avg2 and 'declining' or 'rising')..'. avg1: '.. avg1..'. avg2: '.. avg2, LOG_LEVEL)
		else
			-- Device event occurred
		end
	end
}