fossasia/loklak_webclient

var urlLib = require('url');

module.exports = {

    provides: '__promoUri',

    getData: function(oembedLinks, whitelistRecord) {

        if (whitelistRecord.isAllowed && whitelistRecord.isAllowed('html-meta.promo')) {        

            var href = oembedLinks[0].href;
            var self_endpoint = false;

            if (CONFIG.SELF_OEMBED_POINT_RE_LIST) {
                var i;
                for(i = 0; i < CONFIG.SELF_OEMBED_POINT_RE_LIST.length && !self_endpoint; i++) {
                    self_endpoint = href.match(CONFIG.SELF_OEMBED_POINT_RE_LIST[i]);
                }
            }

            if (self_endpoint) {

                var urlObj = urlLib.parse(href, true);
                var promo = urlObj.query.promo;

                if (promo && promo.match(/https?:\/\/.+/i)) {

                    return {
                        __promoUri: promo
                    };
                }
            }

        }
    }
};