<?php

namespace CorpusParole\Models;

use EasyRdf\Resource;

/**

 */

class WebResourceManager {

    public static function getResource(...$args) {

        list($url,$graph) = $args;

        $webResource = new Resource($url, $graph);

        $formatLit = $webResource->getLiteral("dc11:format");

        $format = is_null($formatLit)?null:$formatLit->getValue();

        if(is_null($format)) {

            throw new ModelsException("WebResourceManager: No dc:11 format on web resource");

        }

        if(0 === strpos($format, 'audio/') ||

           0 === strpos($format, 'video/') ||

           0 === strpos($format, 'Sampling:') ) {

            return new MediaResource(...$args);

        } else if(

            0 === strpos($format, 'application/xml') ||

            0 === strpos($format, 'application/pdf') ) {

            return new TranscriptResource(...$args);

        }

        else {

            throw new ModelsException("WebResourceManager: unknown format");

        }

    }

}