<?php

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

        // Ziel-Instanzen und Property-Namen
        $this->RegisterPropertyInteger('CapacityTargetInstance', 0);
        $this->RegisterPropertyString('CapacityTargetProperty', 'AufdasNachladen');

        $this->RegisterPropertyInteger('PowerTargetInstance', 0);
        $this->RegisterPropertyString('PowerTargetProperty', 'Peakleistung');

        // Monatswerte
        $this->RegisterPropertyFloat('CapacityJanuary', 11);
        $this->RegisterPropertyFloat('PowerJanuary', 42000);

        $this->RegisterPropertyFloat('CapacityFebruary', 11);
        $this->RegisterPropertyFloat('PowerFebruary', 42000);

        $this->RegisterPropertyFloat('CapacityMarch', 8);
        $this->RegisterPropertyFloat('PowerMarch', 43000);

        $this->RegisterPropertyFloat('CapacityApril', 8);
        $this->RegisterPropertyFloat('PowerApril', 44000);

        $this->RegisterPropertyFloat('CapacitySummer', 8);
        $this->RegisterPropertyFloat('PowerSummer', 44000);

        $this->RegisterPropertyFloat('CapacityOctober', 12);
        $this->RegisterPropertyFloat('PowerOctober', 43000);

        $this->RegisterPropertyFloat('CapacityNovember', 12);
        $this->RegisterPropertyFloat('PowerNovember', 43000);

        $this->RegisterPropertyFloat('CapacityDecember', 12);
        $this->RegisterPropertyFloat('PowerDecember', 43000);

        // Statusvariablen
        $this->RegisterVariableFloat('ActiveCapacity', 'Kapazität Peakshaving', '~Intensity.100', 10);
        $this->RegisterVariableFloat('ActivePower', 'Leistung Peakshaving', '~Watt', 20);

        $this->EnableAction('ActiveCapacity');
        $this->EnableAction('ActivePower');

        // Einmal täglich prüfen/übernehmen
        $this->RegisterTimer('DailyUpdate', 0, 'GEF_ApplyCurrentValues($_IPS[\'TARGET\']);');
    }

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

    $this->SetTimerInterval('DailyUpdate', 24 * 60 * 60 * 1000);

    if (IPS_GetName($this->InstanceID) == '') {
        IPS_SetName($this->InstanceID, 'Peakshaving');
    }
}
    public function RequestAction($Ident, $Value)
    {
        switch ($Ident) {
            case 'ActiveCapacity':
                SetValueFloat($this->GetIDForIdent('ActiveCapacity'), (float)$Value);
                $this->ApplyCapacityToTarget((float)$Value);
                break;

            case 'ActivePower':
                SetValueFloat($this->GetIDForIdent('ActivePower'), (float)$Value);
                $this->ApplyPowerToTarget((float)$Value);
                break;

            default:
                throw new Exception('Ungültiger Ident: ' . $Ident);
        }
    }

    public function ApplyCurrentValues()
    {
        $values = $this->GetValuesForCurrentMonth();

        SetValueFloat($this->GetIDForIdent('ActiveCapacity'), $values['capacity']);
        SetValueFloat($this->GetIDForIdent('ActivePower'), $values['power']);

        $this->ApplyCapacityToTarget($values['capacity']);
        $this->ApplyPowerToTarget($values['power']);

        return 'Peakshaving Werte wurden übernommen.';
    }

    private function GetValuesForCurrentMonth()
    {
        $month = (int)date('n');

        switch ($month) {
            case 1:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityJanuary'),
                    'power'    => $this->ReadPropertyFloat('PowerJanuary')
                ];

            case 2:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityFebruary'),
                    'power'    => $this->ReadPropertyFloat('PowerFebruary')
                ];

            case 3:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityMarch'),
                    'power'    => $this->ReadPropertyFloat('PowerMarch')
                ];

            case 4:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityApril'),
                    'power'    => $this->ReadPropertyFloat('PowerApril')
                ];

            case 5:
            case 6:
            case 7:
            case 8:
            case 9:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacitySummer'),
                    'power'    => $this->ReadPropertyFloat('PowerSummer')
                ];

            case 10:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityOctober'),
                    'power'    => $this->ReadPropertyFloat('PowerOctober')
                ];

            case 11:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityNovember'),
                    'power'    => $this->ReadPropertyFloat('PowerNovember')
                ];

            case 12:
                return [
                    'capacity' => $this->ReadPropertyFloat('CapacityDecember'),
                    'power'    => $this->ReadPropertyFloat('PowerDecember')
                ];
        }

        return [
            'capacity' => 0,
            'power'    => 0
        ];
    }

    private function ApplyCapacityToTarget(float $value)
    {
        $instanceID = $this->ReadPropertyInteger('CapacityTargetInstance');
        $property   = $this->ReadPropertyString('CapacityTargetProperty');

        $this->ApplyPropertyToInstance($instanceID, $property, $value);
    }

    private function ApplyPowerToTarget(float $value)
    {
        $instanceID = $this->ReadPropertyInteger('PowerTargetInstance');
        $property   = $this->ReadPropertyString('PowerTargetProperty');

        $this->ApplyPropertyToInstance($instanceID, $property, $value);
    }

    private function ApplyPropertyToInstance(int $instanceID, string $property, float $value)
    {
        if ($instanceID <= 0) {
            return;
        }

        if (!IPS_InstanceExists($instanceID)) {
            $this->SendDebug('Peakshaving', 'Ziel-Instanz existiert nicht: ' . $instanceID, 0);
            return;
        }

        if ($property === '') {
            $this->SendDebug('Peakshaving', 'Kein Property-Name gesetzt.', 0);
            return;
        }

        IPS_SetProperty($instanceID, $property, $value);

        if (!IPS_ApplyChanges($instanceID)) {
            $this->SendDebug(
                'Peakshaving',
                'IPS_ApplyChanges fehlgeschlagen für Instanz ' . $instanceID . ', Property ' . $property,
                0
            );
        }
    }
}
?>