<?php

declare(strict_types=1);
namespace Belevo\EnelixEMS;

require_once __DIR__.'/NetzfahrplanV4Rueckmeldung.php';

/** Shared physical reading used by receiver and battery immediately before a trial command. */
trait BatterieNetzfahrplanV4RueckmeldungTrait
{
    private function registriereV4Rueckmeldung(): void
    {
        $this->RegisterPropertyString('NetzfahrplanV4RueckmeldungKonfiguration', '{}');
    }

    private function v4BatterieRueckmeldung(): array
    {
        $json=$this->ReadPropertyString('NetzfahrplanV4RueckmeldungKonfiguration');
        if (strlen($json)>65536) throw new \RuntimeException('feedback_configuration_too_large');
        $c=json_decode($json,true,32,JSON_THROW_ON_ERROR);
        if (!is_array($c) || ($c['batteryInstanceId']??null)!==$this->InstanceID) throw new \RuntimeException('feedback_battery_binding_invalid');
        if (!in_array($c['managerId']??0,$this->zugeordneteManagerIDs(),true)) throw new \RuntimeException('feedback_manager_binding_invalid');
        return NetzfahrplanV4Rueckmeldung::read($c,static function(int $id):array {
            if (!IPS_VariableExists($id)) throw new \RuntimeException('feedback_variable_missing');
            $v=IPS_GetVariable($id);$o=IPS_GetObject($id);$value=GetValue($id);
            return ['value'=>$value,'updated'=>$v['VariableUpdated'],'changed'=>$v['VariableChanged'],'parentID'=>$o['ParentID'],'ident'=>$o['ObjectIdent']];
        },time());
    }

    /** Read only. A returned current value is NOT actuator permission. */
    public function GetV4BatterieRueckmeldung(): string
    {
        try { $r=$this->v4BatterieRueckmeldung(); }
        catch (\Throwable $e) { $r=['kind'=>'local_physical_feedback','status'=>'unavailable','reason'=>substr($e->getMessage(),0,200),
            'batteryW'=>null,'gridW'=>null,'usableForTrial'=>false,'canDispatch'=>false]; }
        return json_encode($r,JSON_THROW_ON_ERROR);
    }
}