translations.js

/* ./strings.js */

/* @flow */
'use strict'

import English from './translations/en'
import Hungarian from './translations/hu'

export const Languages = {
    EN: 'en',
    HU: 'hu'
}

export type Language = 'en' | 'hu'

var language: Language = Languages.EN
var translations = English

export const setLanguage = (newLng: Language = Languages.EN) => {
    language = newLng
    switch(language) {
        case Languages.EN:
        translations = English
        break
        case Languages.HU:
        translations = Hungarian
        break
    }
}

export function s(stringId: string, ...params: Array<string>): string {
    if(!translations.hasOwnProperty(stringId)) {
        console.error("No translation for " + stringId + " in language '" + language + "'!")
    }
    return template(translations[stringId])(params)
}

function template(strings, ...keys) {
  return (function(...values) {
    var dict = values[values.length - 1] || {};
    var result = [strings[0]];
    keys.forEach(function(key, i) {
      var value = Number.isInteger(key) ? values[key] : dict[key];
      result.push(value, strings[i + 1]);
    });
    return result.join('');
  });
}


/* ./en/index.js */

/* @flow */
export default {
    profile_title: "Profile",
    profile_subtitle: "Profile subtitle",
    profile_welcome: `Welcome dear ${0}!`
}