app/Sns/VideoExtractor/BiliBiliExtractor.php

BiliBiliExtractor.php

<?php

namespace App\Sns\VideoExtractor;

use Exception;
use GuzzleHttp\Cookie\CookieJar;

/**
 * Example:
 *   url: https://www.bilibili.com/video/av3643130/?from=search&seid=12348617167729948450
 *   result:
 *     "source" => "bilibili"
 *     "source_id" => "3643130"
 *     "play_url" => "http://upos-hz-mirrorks3.acgvideo.com/upgcxcode/30/78/5827830/5827830-1-16.mp4?um_deadline=1507517101&platform=html5&rate=109089&oi=3661773676&um_sign=c0736f75d6a35e8f1111119d75133b76&gen=playurl&os=ks3&hfb=M2Y2ZWYwZjM2YmRiYmY5MDljYTBiOWE2ZmEwYjJmYTM="
 *     "cover" => "https://i1.hdslb.com/bfs/archive/bc23ac6f17c82700d5c1941e0991bc8a6fcbd46c.png"
 *     "url_type" => "mp4"
 */

class BiliBiliExtractor extends BaseExtractor implements ExtractorInterface
{
    const URL_REGEX =
        '/https?:\/\/(?:www\.)?bilibili\.(?:tv|com)\/(?:video\/av)(\d+)/';

    const MEDIA_TYPE = 'mp4';

    const MEDIA_SOURCE = 'bilibili';

    /**
     * 根据视频 Url 获取视频信息
     *
     * @param $url
     *
     * @return array
     */
    public function extractVideo()
    {
        $fingerprint = $this->fingerprint();
        $sourceId = $fingerprint['source_id'];

        $html = $this->requestUrl(
            "https://m.bilibili.com/video/av{$sourceId}.html"
        );

        $title = $this->retrieveTitle($html);
        $cover = $this->retrieveOpenGraphImage($html);

        // `金坷垃原版_搞笑_生活_bilibili_哔哩哔哩` => `金坷垃原版`
        $title = head(explode('_', $title));

        return $fingerprint + [
            'play_url' => $this->fetchPlayUrl($sourceId),
            'cover' => $cover,
            'title' => $title,
            'url_type' => static::MEDIA_TYPE,
        ];
    }

    public function fetchPlayUrl($sourceId)
    {
        $cookies = new CookieJar;

        // Fetch the cookie `buvid3`.
        $this->requestUrl(
            'https://data.bilibili.com/v/web/web_page_view',
            [
                'cookies' => $cookies
            ]
        );

        $result = $this->requestUrl(
            "https://api.bilibili.com/playurl?aid={$sourceId}&page=1&platform=html5&quality=1&vtype=mp4",
            [
                'cookies' => $cookies
            ]
        );

        $info = json_decode($result, $ASSOC = true);

        return array_get($info, 'durl.0.url');
    }

    /**
     * 通过 url 获取 source 和 source_id, fingerprint = ['source', 'source_id']
     *
     * @param $url
     * @return array
     */
    public function fingerprint()
    {
        preg_match(static::URL_REGEX, $this->url, $matches);

        return [
            'source' => static::MEDIA_SOURCE,
            'source_id' => $matches[1],
        ];
    }
}