<?php
class Ladestation extends IPSModule
{
    private const EASEE_GATEWAY_MODULE_ID = "{7A1F1D4B-3E7D-4A3B-9E54-61C8C3B7F201}";
    private const EASEE_GATEWAY_REQUEST_ID = "{BC4E9B83-9C9B-44C3-A902-5CEB45B0E5B1}";
    private const EASEE_GATEWAY_EVENT_ID = "{A8EF2E37-6B35-4E92-A7D1-4F8172790BA2}";

    public function Create()
    {
        parent::Create();
        // Ladestationspezifische Properties
        $this->RegisterPropertyString("IP_Adresse", "0.0.0.0");
        $this->RegisterPropertyInteger("Ladestation", 2);
        $this->RegisterPropertyString("ID", "");
        $this->RegisterPropertyString("Seriennummer", "");
        $this->RegisterPropertyString("Username", "");
        $this->RegisterPropertyString("Password", "");
        $this->RegisterPropertyInteger("Interval", 5); // Recheninterval
        $this->RegisterPropertyInteger("Max_Current_abs", 32); // Recheninterval
        $this->RegisterPropertyInteger("Zeit_Zwischen_Zustandswechseln", 1);
        $this->RegisterPropertyInteger("Ein_Zeit", 0); // Recheninterval
        $this->RegisterPropertyInteger("Aus_Zeit", 0); // Recheninterval
        $this->RegisterPropertyInteger("Token_Easee", 0); // Recheninterval
        $this->RegisterPropertyInteger("Token_ECarUp", 0);
        $this->RegisterPropertyInteger("EaseeGatewayID", 0); // Recheninterval
        // Ladestationspezifische Variabeln
        $this->RegisterVariableFloat("Max_Current", "Maximaler Ladestrom", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Max_Current") , true);
        $this->RegisterVariableBoolean("Is_1_ph", "Auto lädt 1-Phasig", "~Switch", false);
        $this->RegisterVariableBoolean("Car_detected", "Auto erkannt", "~Switch", false);
        $this->RegisterVariableInteger("Pending_Counter", "Pending_Counter", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Pending_Counter") , true);
        $this->RegisterVariableBoolean("Car_is_full", "Auto fertig geladen", "~Switch", false);
        $this->RegisterVariableBoolean("Ladebereit", "Ladestation ein", "~Switch", true);
        $this->EnableAction("Ladebereit");
        $this->RegisterVariableBoolean("Solarladen", "Solarladen ein", "~Switch", false);
        $this->EnableAction("Solarladen");
        $this->RegisterVariableInteger("Fahrzeugstatus", "Fahrzeugstatus", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Fahrzeugstatus") , true);
        $this->RegisterVariableFloat("Ladeleistung_Effektiv", "Aktuelle Ladeleistung", "", 0);
        $this->RegisterVariableBoolean("Peak", "Peak", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Peak") , true);
        $this->RegisterVariableBoolean("IsTimerActive", "IsTimerActive", "", false);
        IPS_SetHidden($this->GetIDForIdent("IsTimerActive") , true);
        $this->RegisterTimer("ZustandswechselTimer", 0, "IPS_RequestAction(" . $this->InstanceID . ', "ResetTimer", "");');
        $this->RegisterVariableBoolean("IsTimerActive_Null_Timer", "IsTimerActive_Null_Timer", "", false);
        IPS_SetHidden($this->GetIDForIdent("IsTimerActive_Null_Timer") , true);
        $this->RegisterTimer("Null_Timer", 0, "IPS_RequestAction(" . $this->InstanceID . ', "ResetNullTimer", "");');
        $this->RegisterVariableString("Letzer_User", "Letzter registrierter Benutzer");
        IPS_SetHidden($this->GetIDForIdent("Letzer_User") , true);
        // Variabeln für Kommunkation mit Manager
        $this->RegisterVariableInteger("Sperre_Prio", "Priorität Sperre", "", 0);
        $this->EnableAction("Sperre_Prio");
        IPS_SetHidden($this->GetIDForIdent("Sperre_Prio") , true);
        $this->RegisterVariableInteger("PV_Prio", "Priorität Solarladen", "", 0);
        $this->EnableAction("PV_Prio");
        IPS_SetHidden($this->GetIDForIdent("PV_Prio") , true);
        $this->RegisterVariableBoolean("Idle", "Idle", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Idle") , true);
        $this->RegisterVariableInteger("Aktuelle_Leistung", "Aktuelle_Leistung", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Aktuelle_Leistung") , true);
        $this->RegisterVariableFloat("Bezogene_Energie", "Gesamter Energiebezug", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Bezogene_Energie") , true);
        $this->RegisterVariableString("PowerSteps", "Leistungsschritte");
        IPS_SetHidden($this->GetIDForIdent("PowerSteps") , true);
        $this->RegisterVariableInteger("Power", "Power");
        IPS_SetHidden($this->GetIDForIdent("Power") , true);
        $this->RegisterVariableBoolean("Is_Peak_Shaving", "Is_Peak_Shaving");
        IPS_SetHidden($this->GetIDForIdent("Is_Peak_Shaving") , true);
        $this->RegisterVariableInteger("Leistung_Delta", "Leistung_Delta", "", 0);
        IPS_SetHidden($this->GetIDForIdent("Leistung_Delta") , true);
$this->RegisterVariableString("Token_Intern", "Internes Token Easee");
        IPS_SetHidden($this->GetIDForIdent("Token_Intern") , true);
        // Hilfsvariabeln für Idle zustand
        $this->RegisterPropertyInteger("IdleCounterMax", 2);
        $this->RegisterVariableInteger("IdleCounter", "IdleCounter", "", 0);
        IPS_SetHidden($this->GetIDForIdent("IdleCounter") , true);
        $this->SetValue("IdleCounter", 0);
        // Initialisiere Idle
        $this->SetValue("Idle", true);
        $this->RegisterTimer("Timer_Do_UserCalc_EVC", $this->ReadPropertyInteger("Interval") * 1000, "IPS_RequestAction(" . $this->InstanceID . ', "Do_UserCalc", "");');
        $this->RegisterTimer("Timer_Refresh_Token", 0, "IPS_RequestAction(" . $this->InstanceID . ', "Refresh_Token", "");');
        $this->RegisterVariableInteger("Mindestaldestrom", "Mindestaldestrom", "", 0);
        $this->EnableAction("Mindestaldestrom");
    }
    public function ApplyChanges()
    {
        parent::ApplyChanges();
        $this->SetTimerInterval(
            "Timer_Do_UserCalc_EVC",
            $this->ReadPropertyInteger("Interval") * 1000
        );

        $stationType = $this->ReadPropertyInteger("Ladestation");
        if (!$this->UsesEaseeGateway($stationType)) {
            return;
        }

        $this->SetTimerInterval("Timer_Refresh_Token", 0);
        if ($this->GetConfiguredEaseeGatewayID() <= 0) {
            return;
        }

        try {
            $this->SubscribeToEaseeGateway();
            $this->GetEaseeStateFromGateway();
        } catch (Throwable $exception) {
            return;
        }
    }

    public function GetConfigurationForm()
    {
        $form = json_decode(
            file_get_contents(__DIR__ . "/form.json"),
            true
        );
        $fieldConfiguration = $this->GetStationFormConfiguration(
            $this->ReadPropertyInteger("Ladestation")
        );

        foreach ($form["elements"] as &$element) {
            $name = (string)($element["name"] ?? "");
            if (!isset($fieldConfiguration[$name])) {
                continue;
            }
            foreach ($fieldConfiguration[$name] as $parameter => $value) {
                $element[$parameter] = $value;
            }
        }
        unset($element);

        return json_encode($form);
    }

    private function UpdateStationForm(int $stationType)
    {
        foreach (
            $this->GetStationFormConfiguration($stationType)
            as $field => $parameters
        ) {
            foreach ($parameters as $parameter => $value) {
                $this->UpdateFormField($field, $parameter, $value);
            }
        }
    }

    private function GetStationFormConfiguration(int $stationType): array
    {
        $configuration = [
            "IP_Adresse" => [
                "visible" => false,
                "caption" => "IP-Adresse",
            ],
            "ID" => [
                "visible" => false,
                "caption" => "Geräte-ID",
            ],
            "Seriennummer" => [
                "visible" => false,
                "caption" => "Seriennummer",
            ],
            "Username" => [
                "visible" => false,
                "caption" => "Benutzername",
            ],
            "Password" => [
                "visible" => false,
                "caption" => "Passwort",
            ],
            "Token_ECarUp" => [
                "visible" => false,
                "caption" => "Variable mit eCarUp API-Token",
            ],
            "EaseeGatewayID" => [
                "visible" => false,
            ],
            "EaseeGatewayHint" => [
                "visible" => false,
            ],
        ];

        switch ($stationType) {
            case 1:
                $configuration["IP_Adresse"] = [
                    "visible" => true,
                    "caption" => "IP-Adresse der Go-E Wallbox",
                ];
                break;

            case 2:
                $configuration["IP_Adresse"] = [
                    "visible" => true,
                    "caption" => "IP-Adresse der Go-E Gemini / Gemini Flex",
                ];
                break;

            case 3:
                $configuration["ID"] = [
                    "visible" => true,
                    "caption" => "Smart-Me Geräte-ID",
                ];
                $configuration["Seriennummer"] = [
                    "visible" => true,
                    "caption" => "Smart-Me Seriennummer",
                ];
                $configuration["Username"] = [
                    "visible" => true,
                    "caption" => "Smart-Me Benutzername",
                ];
                $configuration["Password"] = [
                    "visible" => true,
                    "caption" => "Smart-Me Passwort",
                ];
                break;

            case 5:
                $configuration["ID"] = [
                    "visible" => true,
                    "caption" => "eCarUp Stations-/Connector-ID",
                ];
                $configuration["Seriennummer"] = [
                    "visible" => true,
                    "caption" => "Easee Seriennummer",
                ];
                $configuration["Username"] = [
                    "visible" => true,
                    "caption" =>
                        "eCarUp Benutzerkennung für Solarladen",
                ];
                $configuration["Token_ECarUp"]["visible"] = true;
                $configuration["EaseeGatewayID"]["visible"] = true;
                $configuration["EaseeGatewayHint"]["visible"] = true;
                break;

            case 6:
                $configuration["Seriennummer"] = [
                    "visible" => true,
                    "caption" => "Easee Seriennummer",
                ];
                $configuration["EaseeGatewayID"]["visible"] = true;
                $configuration["EaseeGatewayHint"]["visible"] = true;
                break;
        }

        return $configuration;
    }

    public function RequestAction($Ident, $Value)
    {
        switch ($Ident)
        {
            case "UpdateStationForm":
                $this->UpdateStationForm((int)$Value);
                break;

            case "SetAktuelle_Leistung":
                $this->SetValue("Power", (int)$Value);
            break;
            case "GetCurrentData":
                $this->SetValue("Is_Peak_Shaving", (bool)$Value);
            break;
            case "Do_UserCalc": // Auto und ladestrom erkennen.
                if ($this->Detect_Car($this->ReadPropertyInteger("Ladestation")))
                {
                    $this->SetAktuelle_Leistung($this->GetValue("Power"));
                    $this->GetCurrentData($this->GetValue("Is_Peak_Shaving"));
                }
                else
                {
                    SetValue($this->GetIDForIdent("PowerSteps") , json_encode([0]));
                    $this->SetValue("PowerSteps", json_encode([0]));
                }
            break;
            case "Sperre_Prio":
                $this->SetValue("Sperre_Prio", (bool)$Value);
            break;
            case "PV_Prio":
                $this->SetValue("PV_Prio", (bool)$Value);
            break;
            case "Solarladen":
                $this->SetValue("Solarladen", (bool)$Value);
            break;
            case "Ladebereit":
                $this->SetValue("Ladebereit", (bool)$Value);
            break;
            case "ResetTimer":
                $this->ResetTimer();
            break;
            case "ResetNullTimer":
                $this->ResetNullTimer();
            break;
            case "Refresh_Token":
                $this->Refresh_Token();
            break;
            case "Mindestaldestrom":
                $this->SetValue("Mindestaldestrom", (int)$Value);
            break;
            default:
            break;
        }
    }
    // Erkenne, ob ein auto angeschlossen ist und mit welchem strom es lädt, setzte Statusvariabeln zur Ladestation
    public function Detect_Car(int $carType)
    {
        if ($this->GetValue("Car_detected") == true)
        { // Wenn schon auto angeschlossen, schaue ob es noch lädt
            if ($this->Get_Car_Status($carType) == true)
            {
                $this->SetValue("Car_detected", true);
                if ($this->GetValue("Max_Current") < 6)
                {
                    $this->SetValue("Car_is_full", true);
                    $this->ResetTimer();
                    $this->ResetNullTimer();
                }
            }
            else
            {
                $this->SetValue("Car_detected", false);
                $this->SetValue("Pending_Counter", 0);
                $this->SetValue("Leistung_Delta", 0);
                $this->SetValue("Car_is_full", false);
                $this->ResetTimer();
                $this->ResetNullTimer();
                $this->SetValue("Is_1_ph", false);
                $this->SetValue("Aktuelle_Leistung", 0);
                $this->SetValue("IdleCounter", 0);
                $this->SetValue("Idle", true);
            }
        }
        else
        { // wenn kein auto angeschlossen schaue ob eines angesteckt wurde
            if ($this->Get_Car_Status($carType) == true)
            {
                $this->sendPowerToStation($this->ReadPropertyInteger("Max_Current_abs"));
                $counter = $this->GetValue("Pending_Counter");
                if ($counter > (60 / ($this->ReadPropertyInteger("Interval"))))
                {
                    $this->SetValue("Pending_Counter", 0);
                    if ($this->GetValue("Ladeleistung_Effektiv") > 7500)
                    {
                        $this->SetValue("Is_1_ph", false);
                        $this->Calc_Max_Current(false);
                    }
                    else
                    {
                        $this->SetValue("Is_1_ph", true);
                        $this->Calc_Max_Current(true);
                    }
                    $this->SetValue("Car_detected", true);
                    if ($this->GetValue("Is_1_ph"))
                    {
                        $power = $this->GetValue("Mindestaldestrom") * 230;
                    }
                    else
                    {
                        $power = $this->GetValue("Mindestaldestrom") * 400 * 1.71;
                    }
                    $this->SetValue("Power", $power);
                }
                else
                {
                    $this->SetValue("Pending_Counter", $counter + 1);
                    $this->SetValue("Car_detected", false);
                }
            }
            else
            {
                $this->SetValue("Car_detected", false);
                $this->SetValue("Leistung_Delta", 0);
                $this->sendPowerToStation($this->ReadPropertyInteger("Max_Current_abs"));
            }
        }
        return $this->GetValue("Car_detected");
    }
    public function SetTimerOn()
    {
        // Timer setzen, der nach "Zeit_Zwischen_Zustandswechseln" abläuft, verhindert schnelles Takten
        $zeitZwischenZustandswechseln = $this->ReadPropertyInteger("Zeit_Zwischen_Zustandswechseln");
        if ($zeitZwischenZustandswechseln > 0)
        {
            $this->SetTimerInterval("ZustandswechselTimer", $zeitZwischenZustandswechseln * 60000); // Timer in Millisekunden
            // Timer-Status auf true setzen
            $this->SetValue("IsTimerActive", true);
        }
        else
        {
            $this->SetValue("IsTimerActive", false);
        }
    }
    // Methode zum Setzen eines mindeststromes beim laden, über einen timer
    public function SetTimerNullMindestlast($time)
    {
        if ($time > 0)
        {
            $this->SetTimerInterval("Null_Timer", $time * 60000); // Timer in Millisekunden
            // Timer-Status auf true setzen
            $this->SetValue("IsTimerActive_Null_Timer", true);
        }
        else
        {
            $this->SetValue("IsTimerActive_Null_Timer", false);
        }
    }
    // Methode zum Zurücksetzen nach Ablauf des Timers
    public function ResetTimer()
    {
        // Timer stoppen
        $this->SetTimerInterval("ZustandswechselTimer", 0);
        // Timer-Status auf false setzen
        $this->SetValue("IsTimerActive", false);
    }
    // Methode zum Zurücksetzen nach Ablauf des Timers Mindeststroms
    public function ResetNullTimer()
    {
        // Timer stoppen
        $this->SetTimerInterval("Null_Timer", 0);
        // Timer-Status auf false setzen
        $this->SetValue("IsTimerActive_Null_Timer", false);
    }
    // Erkenne Autostatus (ladestrom, status) auf basis des Typs
    public function Get_Car_Status(int $carType)
    {
        $ch = curl_init();
        $car_on_station = $this->GetValue("Car_detected");
        switch ($carType)
        {
            case 1: // GO-E alt
                curl_setopt($ch, CURLOPT_URL, "http://" . $this->ReadPropertyString("IP_Adresse") . "/mqtt?payload=");
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                $response = curl_exec($ch);
                curl_close($ch);
                $data = json_decode($response, true);
                if (json_last_error() === JSON_ERROR_NONE && isset($data["car"]))
                {
                    if ($data["car"] != 1)
                    {
                        $car_on_station = true;
                    }
                    else
                    {
                        $car_on_station = false;
                    }
                    $this->SetValue("Ladeleistung_Effektiv", $data["nrg"][11] * 10);
                    $this->SetValue("Fahrzeugstatus", $data["car"]);
                }
            break;
            case 2: // Go-E Gemini
                curl_setopt($ch, CURLOPT_URL, "http://" . $this->ReadPropertyString("IP_Adresse") . "/api/status");
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                $response = curl_exec($ch);
                curl_close($ch);
                $data = json_decode($response, true);
                if (json_last_error() === JSON_ERROR_NONE && isset($data["car"]))
                {
                    if ($data["car"] != 1)
                    {
                        $car_on_station = true;
                    }
                    else
                    {
                        $car_on_station = false;
                    }
                    $this->SetValue("Ladeleistung_Effektiv", $data["nrg"][11]);
                    $this->SetValue("Fahrzeugstatus", $data["car"]);
                }
            break;
            case 3: // Smart-Me Pico
                curl_setopt($ch, CURLOPT_URL, "https://api.smart-me.com/pico/charging/" . $this->ReadPropertyString("ID"));
                curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
                curl_setopt($ch, CURLOPT_USERPWD, $this->ReadPropertyString("Username") . ":" . $this->ReadPropertyString("Password"));
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                $response = curl_exec($ch);
                curl_close($ch);
                $data = json_decode($response, true);
                if (json_last_error() === JSON_ERROR_NONE && isset($data["State"]))
                {
                    if ($data["State"] != 1)
                    {
                        $car_on_station = true;
                    }
                    else
                    {
                        $car_on_station = false;
                    }
                    $this->SetValue("Ladeleistung_Effektiv", round($data["ActiveChargingPower"] * 1000));
                    $this->SetValue("Fahrzeugstatus", $data["State"]);
                }
            break;
            case 4: // Herstellerunabh.
                $car_on_station = true;
            break;
            case 5: // Solarladen E-Car-Up
                $authToken = GetValue($this->ReadPropertyInteger("Token_ECarUp"));
                $ID = $this->ReadPropertyString("ID");
                $apiUrl = "https://public-api.ecarup.com/v1/station/" . $ID .
                    "/connectors/" . $ID . "/active-charging";
                $eCarUpHandle = curl_init();
                curl_setopt($eCarUpHandle, CURLOPT_URL, $apiUrl);
                curl_setopt($eCarUpHandle, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($eCarUpHandle, CURLOPT_HTTPHEADER, [
                    "accept: application/json",
                    "Authorization: Bearer " . $authToken,
                ]);
                $eCarUpResponse = curl_exec($eCarUpHandle);
                $eCarUpData = json_decode($eCarUpResponse, true);
                curl_close($eCarUpHandle);

                if (
                    json_last_error() === JSON_ERROR_NONE &&
                    isset($eCarUpData["driverIdentifier"])
                ) {
                    $this->SetValue(
                        "Letzer_User",
                        $eCarUpData["driverIdentifier"]
                    );
                    $this->SetValue(
                        "Solarladen",
                        $this->ReadPropertyString("Username") ===
                            $eCarUpData["driverIdentifier"]
                    );
                }

                $car_on_station =
                    $this->GetEaseeCarStatusFromGateway($car_on_station);
                break;

            case 6: // Easee
                $car_on_station =
                    $this->GetEaseeCarStatusFromGateway($car_on_station);
                break;

            default:
                $this->SetValue("Car_detected", false);
                $this->SetValue("Fahrzeugstatus", -1);
            break;
        }
        return $car_on_station;
    }
    // Methode zum Berechnen des Maximalen Stroms den eine Ladestation/Auto ziehen kann.

    public function Calc_Max_Current(bool $is_1_ph)
    {
        $maxCurrent = 32;
        if ($is_1_ph)
        {
            $maxCurrent = 2.5 + ($this->GetValue("Ladeleistung_Effektiv") / 230);
        }
        else
        {
            $maxCurrent = 2.5 + ($this->GetValue("Ladeleistung_Effektiv") / (1.71 * 400));
        }
        if ($maxCurrent > $this->ReadPropertyInteger("Max_Current_abs"))
        {
            $maxCurrent = $this->ReadPropertyInteger("Max_Current_abs");
        }
        $this->SetValue("Max_Current", $maxCurrent);
    }
    // Mehtohde zum Umrechnen Leistung/Strom
    public function Get_Current_From_Power(bool $is_1_ph, int $power)
    {
        if ($is_1_ph)
        {
            $current = round($power / 230);
        }
        else
        {
            $current = round($power / (400 * 1.71));
        }
        return $current;
    }
    // Methode zum ermitteln aller möglcihen leistungsschritte mit aktuellem Maximalstrom
    public function Get_Array_From_Current(bool $is_1_ph, float $current, int $power, bool $timer)
    {
        $resultArray = [];
        if ($timer)
        {
            // Timer an
            if ($power === 0)
            {
                // power == 0: nur eine 0 zurückgeben
                $resultArray[] = 0;
                return $resultArray;
            }
            else
            {
                for ($i = (max($this->GetValue("Mindestaldestrom") + 1, 6));$i <= $current;$i++)
                {
                    if ($is_1_ph)
                    {
                        $resultArray[] = $i * 230;
                    }
                    else
                    {
                        $resultArray[] = $i * 400 * 1.71;
                    }
                }
            }
            // power > 0: keine 0 am Anfang, Schleife normal durchlaufen
            
        }
        else
        {
            if ($is_1_ph)
            {
                $resultArray[] = $this->GetValue("Mindestaldestrom") * 230;
            }
            else
            {
                $resultArray[] = $this->GetValue("Mindestaldestrom") * 400 * 1.71;
            }
            // Schleife wie gehabt
            for ($i = (max($this->GetValue("Mindestaldestrom") + 1, 6));$i <= $current;$i++)
            {
                if ($is_1_ph)
                {
                    $resultArray[] = $i * 230;
                }
                else
                {
                    $resultArray[] = $i * 400 * 1.71;
                }
            }
        }
        return $resultArray;
    }
    public function SetAktuelle_Leistung(int $power)
    {
        // Hier eine Leistungsänderung detektieren für Idle und interne Mindestlaufzeiten
        $this->CheckIdle($power);
        if ($this->GetValue("Aktuelle_Leistung") != $power)
        {
            $this->SetTimerOn();
        }
        // Leistung nur ändern wenn aktuell kein Timer aktiv ist
        if (($this->GetValue("Aktuelle_Leistung") == 0) && ($power > 0))
        {
            $this->SetTimerNullMindestlast($this->ReadPropertyInteger("Ein_Zeit"));
        }
        elseif (($this->GetValue("Aktuelle_Leistung") > 0) && ($power == 0))
        {
            $this->SetTimerNullMindestlast($this->ReadPropertyInteger("Aus_Zeit"));
        }
        $internalPower = GetValue($this->GetIDForIdent("Aktuelle_Leistung"));
        // Aktuelle Leistungsvorgabe setzen
        SetValue($this->GetIDForIdent("Aktuelle_Leistung") , $power);
        if ($power <= 0)
        {
            $this->SetValue("Pending_Counter", 0);
        }
        // Bezogene Energie aufintegrieren
        $this->SetValue("Bezogene_Energie", ($this->GetValue("Bezogene_Energie") + ($this->GetValue("Aktuelle_Leistung") * ($this->ReadPropertyInteger("Interval") / 3600))));
        if ($power != $internalPower)
        {
            // Setze die interne Leistungsvorgabe
            // Idle für x Zyklen auf false setzen
            SetValue($this->GetIDForIdent("Idle") , false);
            SetValue($this->GetIDForIdent("IdleCounter") , $this->ReadPropertyInteger("IdleCounterMax"));
        }
        else
        {
            // IdleCallCounter herunterzählen, wenn power == interne Leistungsvorgabe
            $idleCounter = GetValue($this->GetIDForIdent("IdleCounter"));
            if ($idleCounter > 0)
            {
                $idleCounter--;
                $this->SetValue("Pending_Counter", 0);
                SetValue($this->GetIDForIdent("IdleCounter") , $idleCounter);
                if ($idleCounter == 0)
                {
                    SetValue($this->GetIDForIdent("Idle") , true);
                }
            }
        }
        // Ladeleistung setzen
        $peak = GetValue($this->GetIDForIdent("Peak"));
        $solarladen = GetValue($this->GetIDForIdent("Solarladen"));
        $Ladebereit = GetValue($this->GetIDForIdent("Ladebereit"));
        if (!$Ladebereit)
        {
            $this->sendPowerToStation(0);
        }
        elseif (!$peak && !$solarladen)
        {
            // Wenn weder Peak noch Solarladen aktiv sind, setze Ladeleistung auf MaxLeistung
            $this->sendPowerToStation($this->Get_Current_From_Power($this->GetValue("Is_1_ph") , $power));
        }
        else
        {
            // Ansonsten setze Ladeleistung auf die aktuelle Leistungsvorgabe (Aktuelle_Leistung)
            $this->sendPowerToStation($this->Get_Current_From_Power($this->GetValue("Is_1_ph") , $power));
        }
    }
    // Methode zum Abrufen der aktuellen Daten
    public function GetCurrentData(bool $Peak)
    {
        // Überprüfen, ob der Timer aktiv ist
        if ($this->GetValue("IsTimerActive"))
        {
            // Timer ist aktiv, PowerSteps setzen
            $this->SetValue("PowerSteps", json_encode([$this->GetValue("Aktuelle_Leistung") ]));
            $this->SetValue("Leistung_Delta", $this->GetValue("Aktuelle_Leistung") - $this->GetValue("Ladeleistung_Effektiv"));
            return;
        }
        else
        {
            $this->SetValue("Leistung_Delta", 0);
        }
        // Aktuelle Properties abrufen
        $ladebereit = GetValue($this->GetIDForIdent("Ladebereit"));
        $solarladen = GetValue($this->GetIDForIdent("Solarladen"));
        // Peak-Wert speichern
        $this->SetValue("Peak", $Peak);
        // Array für die Powersteps initialisieren
        $powerSteps = [];
        // Konfiguration des powerSteps-Arrays basierend auf den Properties
        if (!$ladebereit || $this->GetValue("Car_is_full"))
        {
            $powerSteps = [0];
        }
        elseif (!$Peak && !$solarladen)
        {
            $powerSteps = [max($this->Get_Array_From_Current($this->GetValue("Is_1_ph") , $this->GetValue("Max_Current") , $this->GetValue("Aktuelle_Leistung") , $this->GetValue("IsTimerActive_Null_Timer"))) ];
        }
        elseif (!$Peak && $solarladen)
        {
            $powerSteps = $this->Get_Array_From_Current($this->GetValue("Is_1_ph") , $this->GetValue("Max_Current") , $this->GetValue("Aktuelle_Leistung") , $this->GetValue("IsTimerActive_Null_Timer"));
        }
        elseif ($solarladen && $Peak)
        {
            if ($is_1_ph)
            {
                $powerSteps = [$this->GetValue("Mindestaldestrom") * 230];
            }
            else
            {
                $powerSteps = [$this->GetValue("Mindestaldestrom") * 400 * 1.71];
            }
        }
        else
        {
            $powerSteps = $this->Get_Array_From_Current($this->GetValue("Is_1_ph") , $this->GetValue("Max_Current") , $this->GetValue("Aktuelle_Leistung") , $this->GetValue("IsTimerActive_Null_Timer"));
        }
        // PowerSteps in der RegisterVariable speichern
        SetValue($this->GetIDForIdent("PowerSteps") , json_encode($powerSteps));
        // Rückgabe der Powersteps
        $counter = $this->GetValue("Pending_Counter");
        if ($this->GetValue("Aktuelle_Leistung") > (1.11 * $this->GetValue("Ladeleistung_Effektiv")))
        {
            $this->SetValue("Pending_Counter", $counter + 1);
        }
        elseif (max($this->Get_Array_From_Current($this->GetValue("Is_1_ph") , $this->GetValue("Max_Current") , $this->GetValue("Aktuelle_Leistung") , $this->GetValue("IsTimerActive_Null_Timer"))) < (1.11 * $this->GetValue("Ladeleistung_Effektiv")))
        { // diesen elseif ggf wieder rauslöschen
            $this->SetValue("Pending_Counter", $counter + 1);
        }
        else
        {
            $this->SetValue("Pending_Counter", 0);
        }
        if ($counter > (90 / ($this->ReadPropertyInteger("Interval"))))
        {
            $this->SetValue("Pending_Counter", 0);
            if ((max(json_decode($this->GetValue("PowerSteps")))) > 0)
            {
                if ($this->GetValue("Aktuelle_Leistung") > (1.11 * $this->GetValue("Ladeleistung_Effektiv")))
                {
                    $this->Calc_Max_Current($this->GetValue("Is_1_ph"));
                }
            }
        }
        return $powerSteps;
    }
    //
    public function sendPowerToStation(float $value)
    {
        $baseUrl = "";
        $stationType = $this->ReadPropertyInteger("Ladestation");

        if ($stationType === 5 || $stationType === 6) {
            if (
                $stationType === 5 &&
                $this->ReadPropertyString("Username") != $this->GetValue("Letzer_User")
            ) {
                return;
            }
            return $this->SendEaseeCurrentToGateway($value);
        }
    
        switch ($stationType) {
            case 1:
                $baseUrl = "http://" . $this->ReadPropertyString("IP_Adresse") . "/mqtt?payload=";
                break;
            case 2:
                $baseUrl = "http://" . $this->ReadPropertyString("IP_Adresse") . "/api/set?";
                break;
            case 3:
                $baseUrl = "https://api.smart-me.com/pico/loadmanagementgroup/current/" . $this->ReadPropertyString("Seriennummer") . "?current=";
                break;
            case 4:
                // Nichts zu tun für Dummy station
                return;
        }
    
        $ch = curl_init(); 
        if ($value == 0) {
            switch ($stationType) {
                case 1:
                    $url = $baseUrl . "alw=0";
                    break;
                case 2:
                    $url = $baseUrl . "frc=1&sua=false";
                    
                    break;
                case 3:
                    $url = $baseUrl . "0";
                    curl_setopt($ch, CURLOPT_POST, true);
                    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
                    curl_setopt($ch, CURLOPT_USERPWD, $this->ReadPropertyString("Username") . ":" . $this->ReadPropertyString("Password"));
                    break;
                case 4:
                    // Nichts zu tun für Dummy station
                    return;
                default:
                    return "Invalid station type.";
            }
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            $response = curl_exec($ch);
            curl_close($ch);
            return $response;
        } elseif ($value >= 1 && $value <= 32) {
            switch ($stationType) {
                case 1:
                    $url1 = $baseUrl . "alw=1";
                    $url2 = $baseUrl . "amp=$value";
                    break;
                case 2:
                    $url1 = $baseUrl . "frc=2";
                    $url2 = $baseUrl . "amp=$value";
                    break;
                case 3:
                    $url2 = $baseUrl . ($value * 1000);
                    curl_setopt($ch, CURLOPT_POST, true);
                    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
                    curl_setopt($ch, CURLOPT_USERPWD, $this->ReadPropertyString("Username") . ":" . $this->ReadPropertyString("Password"));
                    break;
                case 4:
                    // Nichts zu tun für Dummy station
                    return;
                default:
                    return "Invalid station type.";
            }
    
            if (isset($url1)) {
                curl_setopt($ch, CURLOPT_URL, $url1);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                $response1 = curl_exec($ch);
                if (curl_errno($ch)) {
                    curl_close($ch);
                    return "Error:" . curl_error($ch);
                }
            }
    
            curl_setopt($ch, CURLOPT_URL, $url2);
            $response2 = curl_exec($ch);
            if (curl_errno($ch)) {
                curl_close($ch);
                return "Error:" . curl_error($ch);
            }
            curl_close($ch);
            return;
        } else {
            return "Invalid value. Must be between 0 and 32.";
        }
    }

    public function Refresh_Token()
    {
        // Easee-Zugangsdaten und Token werden ausschliesslich
        // im SignalR-Gateway verwaltet.
        return;
    }

    private function UsesEaseeGateway(int $stationType): bool
    {
        return $stationType === 5 || $stationType === 6;
    }

    private function IsEaseeGatewayInstance(int $instanceID): bool
    {
        if ($instanceID <= 0 || !IPS_InstanceExists($instanceID)) {
            return false;
        }

        $instance = IPS_GetInstance($instanceID);
        return
            $instance["ModuleInfo"]["ModuleID"] ===
            self::EASEE_GATEWAY_MODULE_ID;
    }

    private function SubscribeToEaseeGateway()
    {
        $serialNumber = strtoupper(
            trim($this->ReadPropertyString("Seriennummer"))
        );
        if ($serialNumber === "") {
            return;
        }

        $response = $this->SendEaseeGatewayRequest([
            "action" => "Subscribe",
            "serialNumber" => $serialNumber,
        ]);
        $this->ApplyEaseeGatewayResponse($response);
    }

    private function GetEaseeStateFromGateway()
    {
        $serialNumber = strtoupper(
            trim($this->ReadPropertyString("Seriennummer"))
        );
        if ($serialNumber === "") {
            return;
        }

        $response = $this->SendEaseeGatewayRequest([
            "action" => "GetState",
            "serialNumber" => $serialNumber,
        ]);
        $this->ApplyEaseeGatewayResponse($response);
    }

    private function SendEaseeGatewayRequest(array $request)
    {
        $gatewayID = $this->GetConfiguredEaseeGatewayID();
        if (
            $gatewayID <= 0 ||
            !function_exists("EASEEGW_ProcessStationRequest")
        ) {
            return null;
        }

        $response = EASEEGW_ProcessStationRequest(
            $gatewayID,
            json_encode($request)
        );
        if (!is_string($response) || $response === "") {
            return null;
        }

        $decoded = json_decode($response, true);
        return is_array($decoded) ? $decoded : null;
    }

    private function GetConfiguredEaseeGatewayID(): int
    {
        $gatewayID = $this->ReadPropertyInteger("EaseeGatewayID");
        if (!$this->IsEaseeGatewayInstance($gatewayID)) {
            return 0;
        }
        return $gatewayID;
    }

    private function ApplyEaseeGatewayResponse($response)
    {
        if (!is_array($response)) {
            return;
        }

        if (!isset($response["state"]) || !is_array($response["state"])) {
            return;
        }

        $updated = (int)($response["state"]["updated"] ?? time());
        foreach (
            [47, 104, 109, 110, 120, 182, 183, 184, 185]
            as $observationID
        ) {
            $key = (string)$observationID;
            if (array_key_exists($key, $response["state"])) {
                $this->StoreEaseeObservation(
                    $observationID,
                    $response["state"][$key],
                    $updated
                );
            }
        }
    }

    private function StoreEaseeObservation(
        int $observationID,
        $value,
        int $timestamp
    ) {
        if (
            !in_array(
                $observationID,
                [47, 104, 109, 110, 120, 182, 183, 184, 185],
                true
            )
        ) {
            return;
        }

        $state = json_decode(
            $this->GetBuffer("EaseeGatewayState"),
            true
        );
        if (!is_array($state)) {
            $state = [];
        }

        if ($observationID === 109) {
            $previousMode = (int)($state["109"] ?? -1);
            if ((int)$value === 1 || $previousMode === 1) {
                foreach (
                    [110, 182, 183, 184, 185]
                    as $sessionObservationID
                ) {
                    $state[(string)$sessionObservationID] = 0;
                }
            }
        }

        $state[(string)$observationID] = $value;
        $state["updated"] = $timestamp;
        $this->SetBuffer(
            "EaseeGatewayState",
            json_encode($state)
        );

        if ($observationID === 109) {
            $this->SetValue("Fahrzeugstatus", (int)$value);
        } elseif ($observationID === 120) {
            $this->SetValue(
                "Ladeleistung_Effektiv",
                round((float)$value * 1000)
            );
        }
    }

    private function GetEaseeCarStatusFromGateway(bool $currentState): bool
    {
        $this->GetEaseeStateFromGateway();
        $state = json_decode($this->GetBuffer("EaseeGatewayState"), true);
        if (!is_array($state) || !array_key_exists("109", $state)) {
            return $currentState;
        }

        $chargerOpMode = (int)$state["109"];
        $currentState =
            $chargerOpMode != 1 &&
            ($chargerOpMode != 6 || $this->GetValue("Car_detected")) &&
            $chargerOpMode != 7;

        if (array_key_exists("120", $state)) {
            $this->SetValue(
                "Ladeleistung_Effektiv",
                round((float)$state["120"] * 1000)
            );
        }
        $this->SetValue("Fahrzeugstatus", $chargerOpMode);

        return $currentState;
    }

    private function SendEaseeCurrentToGateway(float $value)
    {
        $response = $this->SendEaseeGatewayRequest([
            "action" => "SetDynamicChargerCurrent",
            "serialNumber" => strtoupper(
                trim($this->ReadPropertyString("Seriennummer"))
            ),
            "amps" => $value,
        ]);

        if (!is_array($response) || !($response["success"] ?? false)) {
            return is_array($response)
                ? (string)(
                    $response["error"] ??
                    "Unbekannter Gateway-Fehler"
                )
                : "Easee Gateway nicht erreichbar";
        }

        return $response["body"] ?? null;
    }

    public function CheckIdle($power)
    {
        $lastpower = GetValue($this->GetIDForIdent("Aktuelle_Leistung"));
        if ($lastpower != $power)
        {
            $this->SetValue("Idle", false);
            $this->SetValue("IdleCounter", $this->ReadPropertyInteger("IdleCounterMax"));
        }
        // IdleCounter auslesen und verarbeiten
        $idleCounter = $this->GetValue("IdleCounter");
        if ($idleCounter > 0)
        {
            $this->SetValue("Idle", false);
            $this->SetValue("IdleCounter", $idleCounter - 1);
        }
        else
        {
            $this->SetValue("Idle", true);
        }
    }
}
?>