salix/services/mailer/application/locale.js

var fs = require('fs');
var config = require('./config.js');
var path = require('path');

module.exports = {
/**
 * Returns template locale
 * @param {String} template - Template name
 * @param {String} countryCode - Language code
 * @param {Object} cb - Callback
 */
    load: function(template, countryCode, cb) {
        var localeFile = path.join(__dirname, 'template', `${template}`, 'locale', `${countryCode}.json`);
        var defaultLocaleFile = path.join(__dirname, 'template', `${template}`, 'locale', `${config.app.defaultLanguage}.json`);

        fs.stat(localeFile, (error, stats) => {
            if (error) {
                fs.stat(defaultLocaleFile, (error, stats) => {
                    if (error)
                        return cb(new Error('Translation not found for template ' + template));

                    cb(null, {locale: require(defaultLocaleFile)});
                });
            } else {
                cb(null, {locale: require(localeFile)});
            }
        });
    },

/**
 * Parse locale text
 * @param {String} text - Locale text
 * @param {Object} params - Locale params
 * @return {String} - Returns parsed text
 */
    parseText: function(text, params) {
        for (var key in params) {
            text = text.replace(`%${key}%`, params[key]);
        }
        return text;
    }
};