<?php
class Verbraucher_extern extends IPSModule
{
    private $timerID;

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

        // Verbraucherspezifische Properties
        $this->RegisterPropertyString("Verbraucher_Liste", "[]");
        $this->RegisterPropertyInteger("Is_Peak", 0);
        $this->RegisterPropertyInteger("delta_power", 0);
        $this->RegisterPropertyInteger("Interval", 5); // Recheninterval

        // Variabeln für Kommunkation mit Manager
        $this->RegisterVariableInteger("Sperre_Prio", "Sperre_Prio");
        $this->RegisterVariableInteger("PV_Prio", "PV_Prio");
        $this->RegisterVariableBoolean("Idle", "Idle", "", 0);
        $this->RegisterVariableInteger("Aktuelle_Leistung", "Aktuelle_Leistung", "", 0);
        $this->RegisterVariableFloat("Bezogene_Energie", "Bezogene_Energie", "", 0);
        $this->RegisterVariableString("PowerSteps", "PowerSteps");
        $this->RegisterVariableInteger("Power", "Power");
        $this->RegisterVariableBoolean("Is_Peak_Shaving", "Is_Peak_Shaving");
        $this->RegisterVariableInteger("Leistung_Delta", "Leistung_Delta", "", 0);

        
        // Hilfsvariabeln für Idle zustand
        $this->RegisterPropertyInteger("IdleCounterMax", 2);
        $this->RegisterVariableInteger("IdleCounter", "IdleCounter", "", 0);
        $this->SetValue("IdleCounter", 0);

        // Initialisiere Idle
        $this->SetValue("Idle", true);

        $this->RegisterTimer("Timer_Do_UserCalc_Verb",$this->ReadPropertyInteger("Interval")*1000,"IPS_RequestAction(" .$this->InstanceID .', "Do_UserCalc", "");');

    }

    public function ApplyChanges()
    {
        parent::ApplyChanges();
        $this->SetTimerInterval("Timer_Do_UserCalc_Verb",$this->ReadPropertyInteger("Interval")*1000); 

    }

    public function RequestAction($Ident, $Value)
    {
        switch ($Ident) {
            
            case "SetAktuelle_Leistung":
                $this->SetValue("Power", (int)$Value);
                break;
    
            case "GetCurrentData":
                $this->SetValue("Is_Peak_Shaving", (bool)$Value);
                break;

            case "Do_UserCalc":
                $this->SetAktuelle_Leistung($this->GetValue("Power"));
                $this->GetCurrentData($this->GetValue("Is_Peak_Shaving"));
                break; 

            default:
                throw new Exception("Invalid Ident");
        }
    }


    private function berechneKombinationen(array $verbraucherListe)
    {

        $kombinationen = [0];
        IPS_LogMessage("externer verb 1", print_r($kombinationen));

             foreach ($verbraucherListe as $verbraucher) {
                
                if ($verbraucher['Read_Var'] == 1) {
                    IPS_LogMessage("externer verb 2", print_r($kombinationen));

                    $tempListe = $kombinationen;                    
                    foreach ($tempListe as &$wert) {
                        $wert += $verbraucher['P_Nenn'];
                        }     
                    unset($wert);                     
                    $kombinationen = array_merge($kombinationen, $tempListe);
                    IPS_LogMessage("externer verb 3", print_r($kombinationen));

                 
                }
            }
            IPS_LogMessage("externer verb 4", print_r($kombinationen));

            sort($kombinationen);
            IPS_LogMessage("externer verb 5", print_r($kombinationen));

            return array_unique($kombinationen); 
        }
    
   
    public function SetAktuelle_Leistung(float $power) {
        $this->CheckIdle($power);
    
        $verbraucherListe = json_decode($this->ReadPropertyString("Verbraucher_Liste"), true);
        $kombinationen = [];//$this->kombinationenRekursiv($verbraucherListe, $power);

        foreach ($verbraucherListe as $verbraucher) {
            $writeVarID = $verbraucher['Write_Var'];
            $pNenn = $verbraucher['P_Nenn'];
            $this->SetValue($writeVarID, 4);
        }
        $this->SetValue("Leistung_Delta", GetValue($this->ReadPropertyInteger("delta_power")));
    }
 
    public function GetCurrentData(bool $Peak)
    {
        $this->SetValue("Is_Peak_Shaving", $Peak);
        SetValue($this->ReadPropertyInteger("Is_Peak"), $Peak);

        $verbraucherListe = json_decode($this->ReadPropertyString("Verbraucher_Liste"), true);
        $kombinationen = $this->berechneKombinationen($verbraucherListe);
        $this->SetValue("PowerSteps", json_encode($kombinationen));
    }
    

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


}

?>