<?php

class NineGagBridge extends BridgeAbstract
{
    const NAME = '9gag Bridge';
    const URI = 'https://9gag.com/';
    const DESCRIPTION = 'Returns latest quotes from 9gag.';
    const MAINTAINER = 'ZeNairolf';
    const CACHE_TIMEOUT = 3600;
    const PARAMETERS = [
        'Popular' => [
            'd' => [
                'name' => 'Section',
                'type' => 'list',
                'values' => [
                    'Hot' => 'hot',
                    'Trending' => 'trending',
                    'Fresh' => 'fresh',
                ],
            ],
            'video' => [
                'name' => 'Filter Video',
                'type' => 'list',
                'values' => [
                    'NotFiltred' => 'none',
                    'VideoFiltred' => 'without',
                    'VideoOnly' => 'only',
                ],
            ],
            'p' => [
                'name' => 'Pages',
                'type' => 'number',
                'defaultValue' => 3,
            ],
        ],
        'Sections' => [
            'g' => [
                'name' => 'Section',
                'type' => 'list',
                'values' => [
                    'Among Us' => 'among-us',
                    'Animals' => 'animals',
                    'Anime & Manga' => 'anime-manga',
                    'Anime Waifu' => 'animewaifu',
                    'Anime Wallpaper' => 'animewallpaper',
                    'Apex Legends' => 'apexlegends',
                    'Ask 9GAG' => 'ask9gag',
                    'Awesome' => 'awesome',
                    'Car' => 'car',
                    'Comic & Webtoon' => 'comic-webtoon',
                    'Coronavirus ' => 'coronavirus',
                    'Cosplay' => 'cosplay',
                    'Countryballs' => 'countryballs',
                    'Cozy & Comfy' => 'home-living',
                    'Crappy Design' => 'crappydesign',
                    'Cryptocurrency ' => 'cryptocurrency',
                    'Cyberpunk 2077' => 'cyberpunk2077',
                    'Dark Humor' => 'darkhumor',
                    'Drawing, DIY & Crafts' => 'drawing-diy-crafts',
                    'Fashion & Beauty' => 'rate-my-outfit',
                    'Food & Drinks' => 'food-drinks',
                    'Football' => 'football',
                    'Fortnite' => 'fortnite',
                    'Funny' => 'funny',
                    'Game of Thrones' => 'got',
                    'Gaming' => 'gaming',
                    'GIF' => 'gif',
                    'Girl' => 'girl',
                    'Girl Celebrity' => 'girlcelebrity',
                    'Guy' => 'guy',
                    'History' => 'history',
                    'Horror' => 'horror',
                    'K-Pop' => 'kpop',
                    'Latest News' => 'timely',
                    'League of Legends' => 'leagueoflegends',
                    'LEGO' => 'lego',
                    'Marvel & DC' => 'superhero',
                    'Meme' => 'meme',
                    'Movie & TV' => 'movie-tv',
                    'Music' => 'music',
                    'NBA' => 'basketball',
                    'Overwatch' => 'overwatch',
                    'PC Master Race' => 'pcmr',
                    'Pokémon' => 'pokemon',
                    'Politics ' => 'politics',
                    'PUBG' => 'pubg',
                    'Random ' => 'random',
                    'Relationship' => 'relationship',
                    'Satisfying' => 'satisfying',
                    'Savage' => 'savage',
                    'Science & Tech' => 'science-tech',
                    'Sport ' => 'sport',
                    'Star Wars' => 'starwars',
                    'Teens Can Relate' => 'school',
                    'Travel & Photography' => 'travel-photography',
                    'Video' => 'video',
                    'Wallpaper' => 'wallpaper',
                    'Warhammer' => 'warhammer',
                    'Wholesome' => 'wholesome',
                    'WTF' => 'wtf',
                ],
            ],
            't' => [
                'name' => 'Type',
                'type' => 'list',
                'values' => [
                    'Hot' => 'hot',
                    'Fresh' => 'fresh',
                ],
            ],
            'video' => [
                'name' => 'Filter Video',
                'type' => 'list',
                'values' => [
                    'NotFiltred' => 'none',
                    'VideoFiltred' => 'without',
                    'VideoOnly' => 'only',
                ],
            ],
            'p' => [
                'name' => 'Pages',
                'type' => 'number',
                'defaultValue' => 3,
            ],
        ],
    ];

    const MIN_NBR_PAGE = 1;
    const MAX_NBR_PAGE = 6;

    protected $p = null;

    public function collectData()
    {
        $url = sprintf(
            '%sv1/group-posts/group/%s/type/%s?',
            self::URI,
            $this->getGroup(),
            $this->getType()
        );
        $cursor = 'c=10';
        $posts = [];
        for ($i = 0; $i < $this->getPages(); ++$i) {
            $content = getContents($url . $cursor);
            $json = json_decode($content, true);
            $posts = array_merge($posts, $json['data']['posts']);
            $cursor = $json['data']['nextCursor'];
        }

        foreach ($posts as $post) {
            $AvoidElement = false;
            switch ($this->getInput('video')) {
                case 'without':
                    if ($post['type'] === 'Animated') {
                        $AvoidElement = true;
                    }
                    break;
                case 'only':
                    echo $post['type'];
                    if ($post['type'] !== 'Animated') {
                        $AvoidElement = true;
                    }
                    break;
                case 'none':
                default:
                    break;
            }

            if (!$AvoidElement) {
                $item['uri'] = preg_replace('/^http:/i', 'https:', $post['url']);
                $item['title'] = $post['title'];
                $item['content'] = self::getContent($post);
                $item['categories'] = self::getCategories($post);
                $item['timestamp'] = self::getTimestamp($post);

                $this->items[] = $item;
            }
        }
    }

    public function getName()
    {
        if ($this->getInput('d')) {
            $name = sprintf('%s - %s', '9GAG', $this->getParameterKey('d'));
        } elseif ($this->getInput('g')) {
            $name = sprintf('%s - %s', '9GAG', $this->getParameterKey('g'));
            if ($this->getInput('t')) {
                $name = sprintf('%s [%s]', $name, $this->getParameterKey('t'));
            }
        }
        if (!empty($name)) {
            return $name;
        }

        return self::NAME;
    }

    public function getURI()
    {
        $uri = $this->getInput('g');
        if ($uri === 'default') {
            $uri = $this->getInput('t');
        }

        return self::URI . $uri;
    }

    protected function getGroup()
    {
        if ($this->getInput('d')) {
            return 'default';
        }

        return $this->getInput('g');
    }

    protected function getType()
    {
        if ($this->getInput('d')) {
            return $this->getInput('d');
        }

        return $this->getInput('t');
    }

    protected function getPages()
    {
        if ($this->p === null) {
            $value = (int) $this->getInput('p');
            $value = ($value < self::MIN_NBR_PAGE) ? self::MIN_NBR_PAGE : $value;
            $value = ($value > self::MAX_NBR_PAGE) ? self::MAX_NBR_PAGE : $value;

            $this->p = $value;
        }

        return $this->p;
    }

    protected function getParameterKey($input = '')
    {
        $params = $this->getParameters();
        $tab = 'Sections';
        if ($input === 'd') {
            $tab = 'Popular';
        }
        if (!isset($params[$tab][$input])) {
            return '';
        }

        return array_search(
            $this->getInput($input),
            $params[$tab][$input]['values']
        );
    }

    protected static function getContent($post)
    {
        if ($post['type'] === 'Animated') {
            $content = self::getAnimated($post);
        } elseif ($post['type'] === 'Article') {
            $content = self::getArticle($post);
        } else {
            $content = self::getPhoto($post);
        }

        return $content;
    }

    protected static function getPhoto($post)
    {
        $image = $post['images']['image460'];
        $photo = '<picture>';
        $photo .= sprintf(
            '<source srcset="%s" type="image/webp">',
            $image['webpUrl']
        );
        $photo .= sprintf(
            '<img src="%s" alt="%s" %s>',
            $image['url'],
            $post['title'],
            'width="500"'
        );
        $photo .= '</picture>';

        return $photo;
    }

    protected static function getAnimated($post)
    {
        $poster = $post['images']['image460']['url'];
        $sources = $post['images'];
        $video = sprintf(
            '<video poster="%s" %s>',
            $poster,
            'preload="auto" loop controls style="min-height: 300px" width="500"'
        );
        $video .= sprintf(
            '<source src="%s" type="video/webm">',
            $sources['image460sv']['vp9Url']
        );
        $video .= sprintf(
            '<source src="%s" type="video/mp4">',
            $sources['image460sv']['h265Url']
        );
        $video .= sprintf(
            '<source src="%s" type="video/mp4">',
            $sources['image460svwm']['url']
        );
        $video .= '</video>';

        return $video;
    }

    protected static function getArticle($post)
    {
        $blocks = $post['article']['blocks'];
        $medias = $post['article']['medias'];
        $contents = [];
        foreach ($blocks as $block) {
            if ('Media' === $block['type']) {
                $mediaId = $block['mediaId'];
                $contents[] = self::getContent($medias[$mediaId]);
            } elseif ('RichText' === $block['type']) {
                $contents[] = self::getRichText($block['content']);
            }
        }

        $content = join('</div><div>', $contents);
        $content = sprintf(
            '<%1$s>%2$s</%1$s>',
            'div',
            $content
        );

        return $content;
    }

    protected static function getRichText($text = '')
    {
        $text = trim($text);

        if (preg_match('/^>\s(?<text>.*)/', $text, $matches)) {
            $text = sprintf(
                '<%1$s>%2$s</%1$s>',
                'blockquote',
                $matches['text']
            );
        } else {
            $text = sprintf(
                '<%1$s>%2$s</%1$s>',
                'p',
                $text
            );
        }

        return $text;
    }

    protected static function getCategories($post)
    {
        $params = self::PARAMETERS;
        $sections = $params['Sections']['g']['values'];

        if (isset($post['sections'])) {
            $postSections = $post['sections'];
        } elseif (isset($post['postSection'])) {
            $postSections = [$post['postSection']];
        } else {
            $postSections = [];
        }

        foreach ($postSections as $key => $section) {
            $postSections[$key] = array_search($section, $sections);
        }

        return $postSections;
    }

    protected static function getTimestamp($post)
    {
        $url = $post['images']['image460']['url'];
        $headers = get_headers($url, true);
        $date = $headers['Date'];
        $time = strtotime($date);

        return $time;
    }
}