modified init and some debugging

hooks/scripts/availability.php

@@ -0,0 +1,62 @@
+<?php
+
+class availability
+{
+	// by default all devices are listening for availability
+
+	function __construct()
+	{
+		global $devices;
+		$this->iterate($devices);
+	}
+
+	private function iterate(& $device)
+	{
+		foreach ($device as $key => $value)
+		{
+			if (gettype($value) == "array")
+			{
+				$this->iterate($value);
+			}elseif (is_a($value, "device"))
+			{
+
+				$value->availability["functions"][] = array($this,"callback");
+			}
+		}
+	}
+	// callback fonction. Is called with these 3 parameters
+	// $device 	-> calling device
+	// $property 	-> parameter passed by mqtt
+	// $value 	-> value of the parameter
+	public function callBack($device, $property, $value)
+	{
+		switch($property)
+		{
+			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"), $device->topic, $device->friendlyName, $value));
+				}
+			break;
+		}
+		//echo sprintf(_("notification received from MQTT -> device %s is %s"), $device->friendlyName , $value). EOL;
+		//echo $property . "=> " . $value . EOL;
+	}
+	/*
+	public function getHook()
+	{
+		return array($this,"callback");
+	}*/
+}
+
+$hooks["availability"] = new availability();
+?>