From 8f3ebda3af68707d6d4a8d37e9ec6b6bb1133c15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20H=C3=A4fliger?= <dh@belevo.ch>
Date: Thu, 13 Nov 2025 08:16:38 +0100
Subject: [PATCH] no message

---
 Int_VGT/module.php | 79 +++++++++++++++++++++++++++++++++-------------
 1 file changed, 57 insertions(+), 22 deletions(-)

diff --git a/Int_VGT/module.php b/Int_VGT/module.php
index adad506..40cf740 100644
--- a/Int_VGT/module.php
+++ b/Int_VGT/module.php
@@ -7,73 +7,108 @@ class Int_VGT extends IPSModule
     public function Create()
     {
         parent::Create();
+
         $this->RegisterPropertyString("DeviceID", "");
     }
 
     public function ApplyChanges()
     {
         parent::ApplyChanges();
-        // Verbindung zur ausgewählten Gateway-Instanz
-        $this->ConnectParent("{7F8A48DD-F8AD-4F9C-8E6B-9E4D92DDB8F9}");
-        $deviceID = $this->ReadPropertyString("DeviceID");
 
-        if ($deviceID === "") {
-            $this->SetStatus(104);
+        // MQTT Server als Parent verbinden
+        $this->ConnectParent("{7F8A48DD-F8AD-4F9C-8E6B-9E4D92DDB8F9}");
+
+        if ($this->ReadPropertyString("DeviceID") == "") {
+            $this->SetStatus(104); // config error
         } else {
-            $this->SetStatus(102);
+            $this->SetStatus(102); // OK
         }
     }
 
+    /**
+     * Required when using RequestAction
+     */
+    public function RequestAction($Ident, $Value)
+    {
+        // Im Moment haben wir keine Action-Variablen
+        // Wird aber von Symcon benötigt → also leer implementiert
+        return;
+    }
+
+    /**
+     * Wird vom MQTT Server aufgerufen wenn Daten ankommen
+     */
     public function ReceiveData(string $JSONString)
     {
-        $data = json_decode($JSONString, true);
-        if ($data === null) {
-            return;
-        }
-        if (!isset($data["Topic"]) || !isset($data["Payload"])) {
+        $buffer = json_decode($JSONString, true);
+        if ($buffer === null) {
+            IPS_LogMessage("Int_VGT", "Invalid JSON received.");
             return;
         }
 
-        $topic = $data["Topic"];
-        $payload = $data["Payload"];
+        if (!isset($buffer['Topic']) || !isset($buffer['Payload'])) {
+            IPS_LogMessage("Int_VGT", "Missing keys in buffer.");
+            return;
+        }
+
+        $topic = $buffer['Topic'];
+        $payload = $buffer['Payload'];
+
+        IPS_LogMessage("Int_VGT", "MQTT RX: {$topic} → {$payload}");
 
-        IPS_LogMessage("Int_VGT", "Received topic: {$topic}, payload: {$payload}");
         $this->HandleIncoming($topic, $payload);
     }
 
+    /**
+     * Verarbeitet eingehende MQTT-Nachrichten
+     */
     private function HandleIncoming(string $topic, string $payload)
     {
         $deviceID = $this->ReadPropertyString("DeviceID");
 
+        if ($deviceID == "") {
+            return; // no config
+        }
+
+        // 1) Feedback Request
         if ($topic === "feedback-request/{$deviceID}") {
+
             $response = json_encode([
                 "status" => "ok",
                 "timestamp" => time()
             ]);
+
             $this->Publish("feedback-response/{$deviceID}", $response);
             return;
         }
 
+        // 2) Remote Control Echo
         if ($topic === "remote-control-response/{$deviceID}") {
-            // Echo same payload
+
             $this->Publish("remote-control-feedback/{$deviceID}", $payload);
             return;
         }
     }
 
+    /**
+     * Publisht MQTT-Daten über das Gateway
+     */
     private function Publish(string $topic, string $payload)
     {
-        $message = [
-            "Topic"   => $topic,
-            "Payload" => $payload,
-            "Retain"  => false,
-            "QoS"     => 0
-        ];
         $data = [
             "DataID" => "{7F8A48DD-F8AD-4F9C-8E6B-9E4D92DDB8F9}",
-            "Packet" => $message
+            "Packet" => [
+                "Topic"   => $topic,
+                "Payload" => $payload,
+                "QoS"     => 0,
+                "Retain"  => false
+            ]
         ];
+
+        IPS_LogMessage("Int_VGT", "MQTT TX: $topic → $payload");
+
         $this->SendDataToParent(json_encode($data));
     }
 }
+
 ?>