<?php

declare(strict_types=1);

class Int_VGT extends IPSModule
{
    public function Create()
    {
        parent::Create();
        $this->RegisterPropertyString("DeviceID", "");
    }

    public function ApplyChanges()
    {
        parent::ApplyChanges();

        // mit dem Parent verbinden (MQTT Server)
        $this->ConnectParent("{7F8A48DD-F8AD-4F9C-8E6B-9E4D92DDB8F9}");

        if ($this->ReadPropertyString("DeviceID") == "") {
            $this->SetStatus(104);
        } else {
            $this->SetStatus(102);
        }
    }

    public function ReceiveData(string $JSONString)
    {
        $data = json_decode($JSONString, true);

        $topic   = $data["Topic"] ?? "";
        $payload = $data["Payload"] ?? "";

        IPS_LogMessage("Int_VGT", "RX: $topic → $payload");

        $this->HandleIncoming($topic, $payload);
    }

    private function HandleIncoming(string $topic, string $payload)
    {
        $device = $this->ReadPropertyString("DeviceID");

        if ($topic === "feedback-request/$device") {

            $resp = json_encode([
                "status" => "ok",
                "ts"     => time()
            ]);

            $this->Publish("feedback-response/$device", $resp);
        }

        if ($topic === "remote-control-response/$device") {
            $this->Publish("remote-control-feedback/$device", $payload);
        }
    }

    private function Publish(string $topic, string $payload)
    {
        $msg = [
            "DataID"  => "{043EA491-84DA-4DFD-B9D4-44B4E63F23D1}",
            "Topic"   => $topic,
            "Payload" => $payload
        ];

        IPS_LogMessage("Int_VGT", "TX: $topic → $payload");

        $this->SendDataToParent(json_encode($msg));
    }

    public function RequestAction($Ident, $Value)
    {
        return; 
        // Erforderlich – auch wenn leer
    }
}

?>