'use strict';

const UrlPattern = require('url-pattern');

const hosts = [
    {
        method: 'self',
        label: 'self',
        pattern: new UrlPattern('http(s)\\://(www.)reddit.com/r/:subreddit/comments/:id/:uri/'),
    },
    {
        method: 'redditImage',
        label: 'reddit',
        pattern: new UrlPattern('http(s)\\://i.redd.it/:id.:ext(?*)'),
    },
    {
        method: 'redditImage',
        label: 'reddit',
        pattern: new UrlPattern('http(s)\\://i.reddituploads.com/:id(?*)'),
    },
    {
        method: 'redditAlbum',
        label: 'reddit',
        pattern: new UrlPattern('http(s)\\://(www.)reddit.com/gallery/:id'),
    },
    {
        method: 'redditVideo',
        label: 'reddit',
        pattern: new UrlPattern('http(s)\\://v.redd.it/:id(?*)'),
    },
    {
        method: 'imgurImage',
        label: 'imgur',
        pattern: new UrlPattern('http(s)\\://(:subdomain.)imgur.com/(:id_d)(:id)(.:ext)(?*)'),
    },
    {
        method: 'imgurAlbum',
        label: 'imgur',
        pattern: new UrlPattern('http(s)\\://(:subdomain.)imgur.com/:type/:id(#:focus)(?*)'),
    },
    {
        method: 'vidbleImage',
        label: 'vidble',
        pattern: new UrlPattern('http(s)\\://(www.)vidble.com/(show/):id(.:ext)(?*)'),
    },
    {
        method: 'vidbleVideo',
        label: 'vidble',
        pattern: new UrlPattern('http(s)\\://(www.)vidble.com/watch?v=:id(?*)'),
    },
    {
        method: 'vidbleAlbum',
        label: 'vidble',
        pattern: new UrlPattern('http(s)\\://(www.)vidble.com/album/:id(?*)'),
    },
    {
        method: 'gfycat',
        label: 'gfycat',
        pattern: new UrlPattern('http(s)\\://(:server.)gfycat.com/(gifs/detail/)(:id-mobile)(:id-size_restricted)(:id)(.:ext)(?*)'),
    },
    {
        method: 'redgifs',
        label: 'redgifs',
        pattern: new UrlPattern('http(s)\\://(:subdomain.)redgifs.com(/watch)(/i)/(:id-mobile)(:id)(.:ext)(?*)'),
    },
    {
        method: 'erome',
        label: 'erome',
        pattern: new UrlPattern('http(s)\\://(www.)erome.com/a/:id(?*)'),
    },
    {
        method: 'eroshareAlbum',
        label: 'eroshare',
        pattern: new UrlPattern('http(s)\\://eroshare.com/:id(#)(:query)'),
    },
    {
        method: 'eroshareItem',
        label: 'eroshare',
        pattern: new UrlPattern('http(s)\\://eroshare.com/i/:id(#)(:query)'),
    },
];

const fallbacks = new Set([
    'bbc',
    'biqle',
    'buzzfeed',
    'chaturbate',
    'dailymotion',
    'eporner',
    'instagram',
    'keezmovies',
    'liveleak',
    'mixcloud',
    'pornhd',
    'pornhub',
    'redtube',
    'soundcloud',
    'soundgasm',
    'spankbang',
    'spankwire',
    'streamable',
    'tiktok',
    'tube8',
    'tweakers',
    'twitch',
    'twitter',
    'vimeo',
    'xhamster',
    'xnxx',
    'youjizz',
    'youporn',
    'youtube',
]);

module.exports = function dissectLink(url) {
    const hostMethod = hosts.reduce((acc, host) => {
        if (acc) {
            return acc;
        }

        // const match = host.pattern.match(url.replace(/(https?:\/\/)|(\/)+/g, '$1$2')); // remove double slashes
        const { origin, pathname } = new URL(url);
        const match = host.pattern.match(`${origin}${pathname}`); // remove double slashes

        if (match) {
            return Object.assign(match, {
                url,
                method: host.method,
                label: host.label,
            });
        }

        return null;
    }, null);

    if (hostMethod) {
        return hostMethod;
    }

    const match = new UrlPattern('http(s)\\://(www.):hostname(*)').match(url);

    if (match) {
        const { hostname } = match;

        if (hostname && fallbacks.has(hostname)) {
            return {
                url,
                method: 'tube',
                label: hostname,
            };
        }
    }

    return null;
};