<?php


class SimpleConfigHelper {

    private Memcached $memcached;
    private GenericDao $dao;

    private stdClass $config;

    public function __construct() {
        $this->memcached = new Memcached();
        $this->memcached->addServer('memcached', 11211);
        $this->dao = GlobalVariables::get("dao");

        $this->reload();
    }

    public function hasValue(string $name) : bool {
        return property_exists($this->config, $name);
    }

    public function getValue(string $name) {
        return $this->config->$name;
    }

    public function setValue(string $name, $val) {
        $model = $this->dao->getFirst(SimpleConfig::class);
        $model->details->$name = $val;
        $this->dao->save($model);
        $this->reload($model);
    }

    
    private function reload($model = null) {
        if (!is_null($model)) {
            $this->memcached->set($this->getCacheKey(), json_encode($model->details, JSON_FORCE_OBJECT));
        }
        else if ( !$this->isCached() ) {
            $model = $this->dao->getFirst(SimpleConfig::class);
            if (is_null($model)) {
                $model = new SimpleConfig();
                $this->dao->save($model);
            }
            $this->memcached->set($this->getCacheKey(), json_encode($model->details, JSON_FORCE_OBJECT));
        }
        
        $rval = $this->memcached->get(
            $this->getCacheKey()
        );
        $this->config = json_decode($rval, false);
    }

    private function getCacheKey() {
        return 'glob.fdn2.simpleConfig';
    }

    private function isCached(): bool {
        return $this->memcached->get( $this->getCacheKey() ) ? true : false;
    }

    private function flush() {
        $this->memcached->set( $this->getCacheKey(), false );
    }


}


?>