<?php

namespace Shikiryu\WebGobbler\Collector;

use Shikiryu\WebGobbler\Collector;

class ImgurCollector extends Collector
{

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

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

    /**
     * @param int $number
     *
     * @return int
     * @throws \JsonException
     */
    public function getRandomImages(int $number)
    {
        $word_to_search = $this->getConfig()->get('collector.keywords.keywords', false);
        $url = sprintf('https://api.imgur.com/3/gallery/search?q=%s', $word_to_search);
        $curl = curl_init();

        curl_setopt_array($curl, array(
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_ENCODING => "",
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_TIMEOUT => 0,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => "GET",
            CURLOPT_HTTPHEADER => [
                sprintf('Authorization: Client-ID %s', $this->getConfig()->get('collector.imgur.client_id'))
            ],
        ));

        $response = curl_exec($curl);

        curl_close($curl);
        $response = json_decode($response, true, 512, JSON_THROW_ON_ERROR);
        $images = array_map(static function($image) {
            return $image['images'][0]['link'];
        }, $response['data']);

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

        foreach ($index_to_download as $image_index) {
            $photo = $images[$image_index];
            file_put_contents($this->getPoolDirectory() . '/' . basename(parse_url($photo, PHP_URL_PATH)), file_get_contents($photo));
        }

        return $number;
    }
}