<?php

namespace Shikiryu\WebGobbler\Collector;

use Goutte\Client;
use Shikiryu\WebGobbler\Collector;

class DeviantartCollector extends Collector
{
    /**
     *
     */
    public const RANDOM_URL = 'https://www.deviantart.com/popular/deviations';
    /**
     * Regular expression to extract the maximum deviantionID from homepage
     */
    public const RE_ALLDEVIATIONID = '/href="https:\/\/www.deviantart.com\/[^\/]+\/art\/([^"]+)"/m';

    /**
     * @return int
     */
    public function getRandomImage()
    {
        return $this->getRandomImages(1);
    }

    /**
     * @param int $number
     *
     * @return int
     */
    public function getRandomImages(int $number = 1)
    {
        $html = file_get_contents(self::RANDOM_URL);
        preg_match_all(self::RE_ALLDEVIATIONID, $html, $deviant_ids);
        $deviant_ids = array_map(static function ($deviant_id) {
            $array = explode('-', $deviant_id);

            return (int)end($array);
        }, $deviant_ids[1]);
        $deviant_ids = array_unique($deviant_ids);

        $index_to_download = array_rand($deviant_ids, $number);
        if (!is_array($index_to_download)) {
            $index_to_download = [$index_to_download];
        }

        foreach ($index_to_download as $deviant_id) {
            $client = new Client();
            $crawler = $client->request('GET', 'https://www.deviantart.com/deviation/'.$deviant_ids[$deviant_id]);
            $img_url = $crawler->filter('[data-hook="art_stage"] img')->eq(0)->attr('src');
            file_put_contents($this->getPoolDirectory() . '/' . basename(parse_url($img_url, PHP_URL_PATH)), file_get_contents($img_url));
        }

        return $number; // Fixme
    }

    /**
     * @return string
     */
    public function getName()
    {
        return 'collector_deviantart';
    }
}