'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: 'reddit',
    label: 'reddit',
    pattern: new urlPattern('http(s)\\://i.redd.it/:id.:ext')
}, {
    method: 'imgurImage',
    label: 'imgur',
    pattern: new urlPattern('http(s)\\://(i.)imgur.com/:id(.:ext)(?:num)')
}, {
    method: 'imgurAlbum',
    label: 'imgur',
    pattern: new urlPattern('http(s)\\://(m.)imgur.com/:type/:id')
}, {
    method: 'gfycat',
    label: 'gfycat',
    pattern: new urlPattern('http(s)\\://(:server.)gfycat.com/:id(.:ext)')
}, {
    method: 'eroshare',
    label: 'eroshare',
    pattern: new urlPattern('http(s)\\://eroshare.com/:id')
}];

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

        const match = host.pattern.match(url);

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

        return null;
    }, null);
};