<?php

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

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

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


    }

    public function ApplyChanges()
    {
        parent::ApplyChanges();
        // Hier ggf. weitere Aktionen bei Änderungen
    }

    /**
     * RequestAction wird aufgerufen, wenn die Variable "Trigger" im WebFront oder Script geändert wird
     */
    public function RequestAction($Ident, $Value)
    {
        switch ($Ident) {
            case "GetAction":
                $this->GetAction();
                break;
            default:
                throw new Exception("Invalid action");
        }
    }

    /**
     * Hauptfunktion: Liest Konfiguration, baut Payload, sendet MQTT Nachricht und loggt alles
     */
    public function GetAction()
    {
        IPS_LogMessage("ShellySwitchSender", "GetAction gestartet");

        $broker = $this->ReadPropertyString("broker_address");
        $port = $this->ReadPropertyInteger("broker_port");
        $user = $this->ReadPropertyString("username");
        $pass = $this->ReadPropertyString("password");
        $topic = $this->ReadPropertyString("Topic");
        $mqttInstanceID = $this->ReadPropertyInteger("mqtt_instance_id");
        $client_id = $this->ReadPropertyString("client_id");
        $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 Broker: $broker:$port");
        IPS_LogMessage("ShellySwitchSender", "Topic: $topic");
        IPS_LogMessage("ShellySwitchSender", "Source: $src");
        IPS_LogMessage("ShellySwitchSender", "Method: $method");
        IPS_LogMessage("ShellySwitchSender", "Message ID: $msg_id");
        IPS_LogMessage("ShellySwitchSender", "Bool-Variable ID: $boolVarID = " . ($onValue ? "true" : "false"));

        $payload = [
            "id" => 0,
            "src" => $src,
            "method" => $method,
            "params" => [
                "id" => $msg_id,
                "on" => $onValue
            ]
        ];

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

        $mqtt = new phpMQTT($broker, $port, $client_id);

        if ($mqtt->connect(true, NULL, $username, $password)) {
            IPS_LogMessage("ShellySwitchSender", "Verbunden mit dem MQTT-Broker");
            $mqtt->publish($topic, $payload, 0);
            IPS_LogMessage("ShellySwitchSender", "Nachricht gesende");
            $mqtt->close();
        } else {
            IPS_LogMessage("ShellySwitchSender", "Verbindung fehlgeschlagen");
        }
    }
}