'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: '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(.:ext)(?*)')
}, {
    method: 'imgurAlbum',
    label: 'imgur',
    pattern: new urlPattern('http(s)\\://(:subdomain.)imgur.com/:type/:id')
}, {
    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/:id(-size_restricted.gif)')
}, {
    method: 'gfycat',
    label: 'gfycat',
    pattern: new urlPattern('http(s)\\://(:server.)gfycat.com/(gifs/detail/):id(.:ext)')
}, {
    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)')
}];

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

        const match = host.pattern.match(url.replace(/(https?:\/\/)|(\/)+/g, '$1$2')); // remove double slashes

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

        return null;
    }, null);
};