<?php

class availability
{
	// by default all devices are listening for availability

	// callback fonction. Is called with these 3 parameters
	// $device 	-> calling device
	// $param 	-> parameter passed by mqtt
	// $value 	-> value of the parameter
	public function callBack($device, $param, $value)
	{
		switch($param)
		{
			case "availability":			// theorically can't be other, but ....
				if ($device->availability != $value)
				{
					//echo "==========>>>>>> Availability $value" . EOL;
					if (!empty($device->availability))
					{
						$log = WARNING;
					}else
					{
						$log = INFO;
					}
					$device->availability = $value;
					logger($log, sprintf(_("Device: %s/%s is %s"), $topic, $fn , $value));
				}
			break;
		}
		echo _("notification received from MQTT") . EOL;
		//echo $param . "=> " . $value . EOL;
	}
	public function getHook()
	{
		return array($this,"callback");
	}
}

$hooks["availability"] = new availability;
?>