<?php

declare(strict_types=1);

class Int_VGT extends IPSModule
{
    public function Create()
    {
        parent::Create();

        $this->RegisterPropertyString('DeviceID', '');

        // Speicherung empfangener Remote-Payloads
        $this->RegisterVariableString('RemoteControlPayload', 'Remote Control Payload', '', 1);

        // Direkte Verbindung zum MQTT-Server herstellen
        $this->ConnectParent("{C6D2AEB3-6E1F-4B2E-8E69-3A1A00246850}");
    }

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

        $device = $this->ReadPropertyString('DeviceID');
        if ($device === '') {
            return;
        }

        // Subscriptions einrichten — wie beim Shelly Modul
        $this->Subscribe("feedback-request/$device");
        $this->Subscribe("remote-control-response/$device");
    }

    private function Subscribe(string $topic)
    {
        $this->SendDebug("Subscribe", "Subscribing to Topic: $topic", 0);

        $this->SendDataToParent(json_encode([
            "DataID" => "{04346E0A-99B3-4D6C-8F00-7E7A5C32A54B}",   // MQTT_Subscribe
            "Topic"  => $topic
        ]));
    }

    private function Publish(string $topic, string $payload)
    {
        $this->SendDebug("Publish", "Topic: $topic Payload: $payload", 0);

        $this->SendDataToParent(json_encode([
            "DataID"  => "{04346E0A-99B3-4D6C-8F00-7E7A5C32A54B}", // MQTT_Publish
            "Topic"   => $topic,
            "Payload" => $payload
        ]));
    }

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

        $topic   = $data['Topic'] ?? '';
        $message = $data['Message'] ?? '';

        $device = $this->ReadPropertyString('DeviceID');

        $this->SendDebug("Receive", "Topic: $topic Message: $message", 0);

        /** 1️⃣ FEEDBACK REQUEST → Starre JSON Antwort senden */
        if ($topic === "feedback-request/$device") {

            $response = [
                "power_production" => 123,
                "is_ready"         => true,
                "is_running"       => true,
                "state_of_charge"  => 50,
                "min_soc"          => 10,
                "max_soc"          => 90
            ];

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

        /** 2️⃣ Remote-Control-Response empfangen */
        if ($topic === "remote-control-response/$device") {

            $this->SetValue('RemoteControlPayload', $message);

            $this->HandleRemoteControl($message);
        }
    }

    protected function HandleRemoteControl(string $payload)
    {
        $this->SendDebug("RemoteControl", "Payload received: $payload", 0);

        // → Hier kannst du später Custom Logic einbauen
    }
}