<?php

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

        // MQTT-Verbindungsparameter
        $this->RegisterPropertyString("broker_address", "");
        $this->RegisterPropertyInteger("broker_port", 1883);
        $this->RegisterPropertyString("username", "");
        $this->RegisterPropertyString("password", "");
        $this->RegisterPropertyString("Topic", "");

        // Nachricht-Payload-Parameter
        $this->RegisterPropertyInteger("msg_id", 100);
        $this->RegisterPropertyString("src", "user1");
        $this->RegisterPropertyString("method", "Switch.Set");
        $this->RegisterPropertyInteger("switch_bool", 0);  // Variable-ID einer Bool-Variable
    }

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

    public function RequestAction($Ident, $Value)
    {
        IPS_LogMessage("ShellySwitchSender", "⚙️ RequestAction: $Ident = $Value");
        switch ($Ident) {
            case "GetAction":
                $this->GetAction();
                break;
            default:
                throw new Exception("Invalid action: $Ident");
        }
    }

    private function GetAction()
    {
        IPS_LogMessage("ShellySwitchSender", " Starte GetAction()...");

        // Eigenschaften lesen
        $broker = $this->ReadPropertyString("broker_address");
        $port = $this->ReadPropertyInteger("broker_port");
        $user = $this->ReadPropertyString("username");
        $pass = $this->ReadPropertyString("password");
        $topic = $this->ReadPropertyString("Topic");

        $msg_id = $this->ReadPropertyInteger("msg_id");
        $src = $this->ReadPropertyString("src");
        $method = $this->ReadPropertyString("method");
        $boolVarID = $this->ReadPropertyInteger("switch_bool");

        if (!IPS_VariableExists($boolVarID)) {
            IPS_LogMessage("ShellySwitchSender", " Fehler: Bool-Variable mit ID $boolVarID existiert nicht.");
            return;
        }

        $onValue = GetValueBoolean($boolVarID);

        IPS_LogMessage("ShellySwitchSender", " MQTT-Ziel: $broker:$port");
        IPS_LogMessage("ShellySwitchSender", " topic: $topic, src: $src, method: $method, msg_id: $msg_id");
        IPS_LogMessage("ShellySwitchSender", " Bool-Wert: " . ($onValue ? "true" : "false") . " (aus Variable $boolVarID)");

        // JSON-Payload erstellen
        $payload = [
            "id" => 0,
            "src" => $src,
            "method" => $method,
            "params" => [
                "id" => $msg_id,
                "on" => $onValue
            ]
        ];

        $json = json_encode($payload);
        IPS_LogMessage("ShellySwitchSender", "📦 MQTT Payload: $json");

        // Sende an MQTTClient
        $clientID = @IPS_GetInstanceIDByName("MQTTClient", 0);
        if ($clientID && IPS_InstanceExists($clientID)) {
            $moduleID = IPS_GetInstance($clientID)['ModuleInfo']['ModuleID'];
            IPS_LogMessage("ShellySwitchSender", "MQTTClient gefunden (ID: $clientID, ModuleID: $moduleID)");

            // Unterstützte Module
            if (
                $moduleID == "{C03937E3-5F86-EACA-B4A2-39A24ACF945A}" ||  // alter MQTTClient
                $moduleID == "{C8792760-65CF-4C53-B5C7-A30FCC84FEFE}"     // offizieller Symcon MQTTClient
            ) {
                MQTTClient_Publish($clientID, $topic, $json, 0, false);
                IPS_LogMessage("ShellySwitchSender", " Nachricht an Topic '$topic' gesendet.");
            } else {
                IPS_LogMessage("ShellySwitchSender", " Fehler: 'MQTTClient' Instanz ist kein gültiges MQTT-Modul.");
            }
        } else {
            IPS_LogMessage("ShellySwitchSender", " Fehler: MQTTClient nicht gefunden. Bitte sicherstellen, dass eine Instanz mit Namen 'MQTTClient' existiert.");
        }
    }
}