<?php

namespace CorpusParole\Models;

use CorpusParole\Libraries\RdfModel\RdfModelResource;

use CorpusParole\Libraries\Utils;

use JsonSerializable;

use Log;

/**

 */

class MediaResource extends WebResource  {

    private $master = false;

    private $extent = -1;

    private $extentMs = -1;

    public function __construct(...$args) {

        //print($graph->dump('html'));

        parent::__construct(...$args);

        list(,,$master) = $args;

        $this->master = $master;

    }

    public function isMaster() {

        return $this->master;

    }

    protected function doClearMemoizationCache() {

        $this->extent = -1;

        $this->extentMs = -1;

    }

    public function getExtent() {

        if($this->extent === -1) {

            $extent = $this->getLiteral("<http://purl.org/dc/terms/extent>");

            $this->extent = is_null($extent)?null:$extent->getValue();

        }

        return $this->extent;

    }

    public function getExtentMs() {

        if($this->extentMs === -1 ) {

            $this->extentMs = Utils::iso8601IntervalToMillis($this->getExtent());

        }

        return $this->extentMs;

    }

    protected function jsonSerializeExtra() {

        return [

            'extent' => $this->getExtent(),

            'extent_ms' => $this->getExtentMs(),

            'master' => $this->isMaster()

        ];

    }

}