Domoticz

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,     performPlayStream = function (domoticz, loadIndicator)
         local mapName        = "/opt/domoticz/userdata/apps/AudioPlayerv3/"                                           -- in what folder are the bash scripts stored.
         local curStreamId    = domoticz.variables('CurrentStreamId').value                                            -- retrieve currently played stream from user variable.
         local newStreamId    = math.modf(domoticz.devices(domoticz.variables('ReceiverStream').value).level/10) - 1   -- represents the selector choice: 0 is selector 10, 1 is 20, etc.
         local numberStreams  = #domoticz.devices(domoticz.variables('ReceiverStream').value).levelNames - 1           -- number of entries of playlist according to Domoticz.
         local player         = "Denon AVR-X2200W (AirPlay)"                                                           -- name of the player in Audio Station.
         local playlist       = "Internet Radio"                                                                       -- name of the playlist in Audio Station.
         local volumeLevel    = domoticz.devices(domoticz.variables('ReceiverVolumeDevice').value).level               -- retrieve current volume level receiver.
         local debugIndicator = ""                                                                                     -- show debugmessages in logfile, value should be -D otherwise leave empty.
         local RunCommand     = "bash "                                                                                -- the commandline to be executed.

         if loadIndicator == "Load" then                                                                               -- clear streams from receiver and load again. Value Load will be translated into -L
            loadIndicator = "-L"
         else
            loadIndicator = ""
         end

         RunCommand = RunCommand..mapName.."play_audio_station.sh "
         RunCommand = RunCommand..curStreamId.." "..newStreamId.." "..numberStreams
         RunCommand = RunCommand.." '"..player.."' '"..playlist.."' "..volumeLevel
         RunCommand = RunCommand.." "..loadIndicator.." "..debugIndicator
         RunCommand = RunCommand.." >"..mapName.."audio.log &"
         domoticz.helpers.printMessage (domoticz, "PlayStream command = "..RunCommand, "high")
         domoticz.helpers.executeCommandOS(domoticz, RunCommand)
         if curStreamId ~= newStreamId then
            domoticz.variables('CurrentStreamId').set(newStreamId)                                                     -- set the new selected stream as the current stream (user variable)
         end
      end

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--
-- ** execute OS commandline
--
,     executeCommandOS = function (domoticz, RunCommand)
         domoticz.executeShellCommand(RunCommand)
      end
--
-- ** print message in Domoticz log depending on logType (low, medium, high, always) of the message and the internal setting of the logType to apply.
--
--
,     printMessage = function (domoticz, messageToPrint, logType)
         print (messageToPrint)
      end

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--
-- last change 1-Sep-23
--
return
{  active  = true
,  on      = {devices      = {'Denon AVR-2200W'
                             ,'Denon Streaming'
                             ,'Denon Volume'
                             }
             ,customEvents = {'activateDenonAfterReceiverSwitchedOn',
                             }
             ,timer        = {'at *:50'
                             }
             }
,  execute = function(domoticz, item)
      if item.isTimer then
-- Start the stream again to clear the buffer of the receiver (every hour).
         domoticz.helpers.printMessage (domoticz, "Reload Receiver.", "low")
         domoticz.helpers.performPlayStream(domoticz, "Load")
      end
      if item.isDevice then
         if item.name == domoticz.variables('ReceiverVolumeDevice').value then
--
--          Overview volume level and dB values
--
--           Volume | Decibel
--                0       -80 (sound is off)
--               10       -70
--               20       -60
--               30       -50
--               40       -40
--               50       -30
--
            ReceiverMaxVolume    = 50
            ReceiverValue        = 0
            ReceiverPercToVolume = 80
            ReceiverValue        = tonumber(item.level)
            if ReceiverValue > ReceiverMaxVolume then
               ReceiverValue = ReceiverMaxVolume
               domoticz.helpers.printMessage (domoticz, "Volume receiver maximized on " ..ReceiverMaxVolume, "always")
            end
            ReceiverCalcValue = ReceiverValue - ReceiverPercToVolume
            domoticz.helpers.performCommandReceiver(domoticz, "VOL", ReceiverCalcValue)
         end
         if item.name == domoticz.variables('ReceiverStream').value then                                                    -- Selector Stream is changed, start that stream to the receiver.
            if (domoticz.devices(domoticz.variables('ReceiverName').value).state   == "Off"                             -- Check if receiver is Off, so first switch on, wait for one minute and then start stream.
               ) then
               domoticz.helpers.printMessage (domoticz, "Receiver (Denon) set On on selector choice, delay 60 secs.", "medium")
               domoticz.devices(domoticz.variables('ReceiverName').value).switchOn().checkFirst()                           -- switch on Receiver
               domoticz.emitEvent('activateDenonAfterReceiverSwitchedOn').afterSec(60)
            else
               domoticz.helpers.performPlayStream(domoticz, "NoLoad")                                                       -- Just load the new stream that is selected.
            end
         end  
         if (item.name == domoticz.variables('ReceiverName').value                        and
             item.state == "On"                                                                                          -- When receiver is set to On wait for one minute and then start stream.
            ) then
            domoticz.helpers.printMessage (domoticz, "Receiver (Denon) set On initially, delay 60 secs.", "medium")
            domoticz.emitEvent('activateDenonAfterReceiverSwitchedOn').afterSec(60)
         end
      end
      if item.isCustomEvent then
         domoticz.helpers.printMessage (domoticz, "Receiver (Denon) set On, delayed for 60 secs. Now start the stream.", "high")
         domoticz.helpers.performPlayStream(domoticz, "Load")                                                               -- Receiver is set to On and waited for one minute, now start stream.
      end
   end
}