const crypto = global.yoho.crypto;
const _ = require('lodash');

const decode = _.memoize(function(r) {
    return crypto.decrypt(null, r);
});

module.exports = function(r) {
    try {
        let s = decode(r);

        s = s.replace(/[^\w\/\^\(\)\[\]+-\.\*:]/g, '');
        return s;
    } catch (e) {
        return r;
    }
};