Merge pull request #6224 from HabitRPG/api-v3-i18n

API v3 - i18n lib and getUserLanguage middleware

Gruntfile.js

@@ -129,7 +129,7 @@ module.exports = function(grunt) {
 
   grunt.registerTask('test:prepare:translations', function() {
     require('babel/register');
-    var i18n  = require('./website/src/libs/i18n'),
+    var i18n  = require('./website/src/libs/api-v3/i18n'),
         fs    = require('fs');
     fs.writeFileSync('test/spec/mocks/translations.js',
       "if(!window.env) window.env = {};\n" +

test/api/v3/unit/libs/i18n.test.js

@@ -0,0 +1,46 @@
+import {
+  translations,
+  localePath,
+  langCodes,
+} from '../../../../../website/src/libs/api-v3/i18n';
+import fs from 'fs';
+import path from 'path';
+
+describe('i18n', () => {
+  let listOfLocales = [];
+
+  before((done) => {
+    fs.readdir(localePath, (err, files) => {
+      if (err) return done(err);
+
+      files.forEach((file) => {
+        if (fs.statSync(path.join(localePath, file)).isDirectory() === false) return;
+        listOfLocales.push(file);
+      });
+
+      listOfLocales = listOfLocales.sort();
+      done();
+    });
+  });
+
+  describe('translations', () => {
+    it('includes a translation object for each locale', () => {
+      listOfLocales.forEach((locale) => {
+        expect(translations[locale]).to.be.an('object');
+      });
+    });
+  });
+
+  describe('localePath', () => {
+    it('is an absolute path to common/locales/', () => {
+      expect(localePath).to.match(/.*\/common\/locales\//);
+      expect(localePath)
+    });
+  });
+
+  describe('langCodes', () => {
+    it('is a list of all the language codes', () => {
+      expect(langCodes.sort()).to.eql(listOfLocales);
+    });
+  });
+});

test/api/v3/unit/middlewares/getUserLanguage.test.js

@@ -0,0 +1,241 @@
+import {
+  generateRes,
+  generateReq,
+  generateNext,
+} from '../../../../helpers/api-unit.helper';
+import getUserLanguage from '../../../../../website/src/middlewares/api-v3/getUserLanguage';
+import Q from 'q';
+import { model as User } from '../../../../../website/src/models/user';
+import { translations } from '../../../../../website/src/libs/api-v3/i18n';
+import accepts from 'accepts';
+
+describe('getUserLanguage', () => {
+  let res, req, next;
+
+  beforeEach(() => {
+    res = generateRes();
+    req = generateReq();
+    next = generateNext();
+  });
+
+  context('query parameter', () => {
+    it('uses the language in the query parameter if avalaible', () => {
+      req.query = {
+        lang: 'es',
+      };
+
+      getUserLanguage(req, res, next);
+      expect(req.language).to.equal('es');
+    });
+
+    it('falls back to english if the query parameter language does not exists', () => {
+      req.query = {
+        lang: 'bla',
+      };
+
+      getUserLanguage(req, res, next);
+      expect(req.language).to.equal('en');
+    });
+
+    it('uses query even if the request includes a user and session', () => {
+      req.query = {
+        lang: 'es',
+      };
+
+      req.locals = {
+        user: {
+          preferences: {
+            language: 'it',
+          },
+        },
+      };
+
+      req.session = {
+        userId: 123
+      };
+
+      getUserLanguage(req, res, next);
+      expect(req.language).to.equal('es');
+    });
+  });
+
+  context('authorized request', () => {
+    it('uses the user preferred language if avalaible', () => {
+      req.locals = {
+        user: {
+          preferences: {
+            language: 'it',
+          },
+        },
+      };
+
+      getUserLanguage(req, res, next);
+      expect(req.language).to.equal('it');
+    });
+
+    it('falls back to english if the user preferred language is not avalaible', (done) => {
+      req.locals = {
+        user: {
+          preferences: {
+            language: 'bla',
+          },
+        },
+      };
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('en');
+        done();
+      });
+    });
+
+    it('uses the user preferred language even if a session is included in request', () => {
+      req.locals = {
+        user: {
+          preferences: {
+            language: 'it',
+          },
+        },
+      };
+
+      req.session = {
+        userId: 123
+      };
+
+      getUserLanguage(req, res, next);
+      expect(req.language).to.equal('it');
+    });
+  });
+
+  context('request with session', () => {
+    it('uses the user preferred language if avalaible', (done) => {
+      sandbox.stub(User, 'findOne').returns({
+        exec() {
+          return Q.resolve({
+            preferences: {
+              language: 'it',
+            }
+          });
+        }
+      });
+
+      req.session = {
+        userId: 123
+      };
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('it');
+        done();
+      });
+    });
+  });
+
+  context('browser fallback', () => {
+    it('uses browser specificed language', (done) => {
+      req.headers['accept-language'] = 'pt';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('pt');
+        done();
+      });
+    });
+
+    it('uses first language in series if browser specifies multiple', (done) => {
+      req.headers['accept-language'] = 'he, pt, it';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('he');
+        done();
+      });
+    });
+
+    it('skips invalid lanaguages and uses first language in series if browser specifies multiple', (done) => {
+      req.headers['accept-language'] = 'blah, he, pt, it';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('he');
+        done();
+      });
+    });
+
+    it('uses normal version of language if specialized locale is passed in', (done) => {
+      req.headers['accept-language'] = 'fr-CA';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('fr');
+        done();
+      });
+    });
+
+    it('uses normal version of language if specialized locale is passed in', (done) => {
+      req.headers['accept-language'] = 'fr-CA';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('fr');
+        done();
+      });
+    });
+
+    it('uses es if es is passed in', (done) => {
+      req.headers['accept-language'] = 'es';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('es');
+        done();
+      });
+    });
+
+    it('uses es_419 if applicable es-languages are passed in', (done) => {
+      req.headers['accept-language'] = 'es-mx';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('es_419');
+        done();
+      });
+    });
+
+    it('uses es_419 if multiple es languages are passed in', (done) => {
+      req.headers['accept-language'] = 'es-GT, es-MX, es-CR';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('es_419');
+        done();
+      });
+    });
+
+    it('zh', (done) => {
+      req.headers['accept-language'] = 'zh-TW';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('zh_TW');
+        done();
+      });
+    });
+
+    it('uses english if browser specified language is not compatible', (done) => {
+      req.headers['accept-language'] = 'blah';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('en');
+        done();
+      });
+    });
+
+    it('uses english if browser does not specify', (done) => {
+      req.headers['accept-language'] = '';
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('en');
+        done();
+      });
+    });
+
+    it('uses english if browser does not supply an accept-language header', (done) => {
+      delete req.headers['accept-language'];
+
+      getUserLanguage(req, res, () => {
+        expect(req.language).to.equal('en');
+        done();
+      });
+    });
+  });
+});

test/common/algos.mocha.coffee

@@ -3,7 +3,7 @@ expect = require 'expect.js'
 sinon = require 'sinon'
 moment = require 'moment'
 shared = require '../../common/script/index.js'
-shared.i18n.translations = require('../../website/src/libs/i18n.js').translations
+shared.i18n.translations = require('../../website/src/libs/api-v2/i18n.js').translations
 test_helper = require './test_helper'
 test_helper.addCustomMatchers()
 $w = (s)->s.split(' ')

test/common/dailies.coffee

@@ -3,7 +3,7 @@ expect = require 'expect.js'
 sinon = require 'sinon'
 moment = require 'moment'
 shared = require '../../common/script/index.js'
-shared.i18n.translations = require('../../website/src/libs/i18n.js').translations
+shared.i18n.translations = require('../../website/src/libs/api-v2/i18n.js').translations
 
 repeatWithoutLastWeekday = ()->
   repeat = {su:true,m:true,t:true,w:true,th:true,f:true,s:true}

test/common/user.fns.ultimateGear.test.js

@@ -1,7 +1,7 @@
 'use strict';
 
 var shared = require('../../common/script/index.js');
-shared.i18n.translations = require('../../website/src/libs/i18n.js').translations
+shared.i18n.translations = require('../../website/src/libs/api-v2/i18n.js').translations
 
 require('./test_helper');
 

test/helpers/api-integration.helper.js

@@ -8,7 +8,7 @@ import {MongoClient as mongo} from 'mongodb';
 import {v4 as generateUUID} from 'uuid';
 import superagent from 'superagent';
 import i18n from '../../common/script/src/i18n';
-i18n.translations = require('../../website/src/libs/i18n.js').translations;
+i18n.translations = require('../../website/src/libs/api-v3/i18n').translations;
 
 const API_TEST_SERVER_PORT = 3003;
 

test/helpers/api-unit.helper.js

@@ -3,7 +3,7 @@ import { model as User } from '../../website/src/models/user'
 import { model as Group } from '../../website/src/models/group'
 import i18n from '../../common/script/src/i18n';
 require('coffee-script');
-i18n.translations = require('../../website/src/libs/i18n.js').translations;
+i18n.translations = require('../../website/src/libs/api-v3/i18n.js').translations;
 
 afterEach(() => {
   sandbox.restore();
@@ -35,6 +35,7 @@ export function generateReq(options={}) {
   let defaultReq = {
     body: {},
     query: {},
+    headers: {},
   };
 
   return defaults(options, defaultReq);

test/helpers/content.helper.js

@@ -2,7 +2,7 @@ require('./globals.helper');
 import {each} from 'lodash';
 
 import i18n from '../../common/script/src/i18n';
-i18n.translations = require('../../website/src/libs/i18n.js').translations;
+i18n.translations = require('../../website/src/libs/api-v3/i18n').translations;
 
 export const STRING_ERROR_MSG = 'Error processing the string. Please see Help > Report a Bug.';
 export const STRING_DOES_NOT_EXIST_MSG = /^String '.*' not found.$/;

website/src/controllers/api-v2/auth.js

@@ -10,7 +10,7 @@ var FirebaseTokenGenerator = require('firebase-token-generator');
 var User = require('../../models/user').model;
 var EmailUnsubscription = require('../../models/emailUnsubscription').model;
 var analytics = utils.analytics;
-var i18n = require('./../../libs/i18n');
+var i18n = require('./../../libs/api-v2/i18n');
 
 var isProd = nconf.get('NODE_ENV') === 'production';
 

website/src/libs/api-v2/analytics.js

@@ -1,4 +1,4 @@
-require('../i18n');
+require('./i18n');
 
 var _ = require('lodash');
 var Content = require('../../../../common').content;

website/src/libs/api-v2/i18n.js

@@ -1,12 +1,12 @@
 var fs = require('fs'),
     path = require('path'),
     _ = require('lodash'),
-    User = require('../models/user').model,
+    User = require('../../models/user').model,
     accepts = require('accepts'),
-    shared = require('../../../common'),
+    shared = require('../../../../common'),
     translations = {};
 
-var localePath = path.join(__dirname, "/../../../common/locales/")
+var localePath = path.join(__dirname, "/../../../../common/locales/")
 
 var loadTranslations = function(locale){
   var files = fs.readdirSync(path.join(localePath, locale));
@@ -60,18 +60,38 @@ _.each(langCodes, function(code){
   }catch (e){}
 });
 
-// Remove en_GB from langCodes checked by browser to avaoi it being 
+// Remove en_GB from langCodes checked by browser to avaoi it being
 // used in place of plain original 'en'
 var defaultLangCodes = _.without(langCodes, 'en_GB');
 
 // A list of languages that have different versions
 var multipleVersionsLanguages = ['es', 'zh'];
 
-var latinAmericanSpanishes = ['es-419', 'es-mx', 'es-gt', 'es-cr', 'es-pa', 'es-do', 'es-ve', 'es-co', 'es-pe',
-                            'es-ar', 'es-ec', 'es-cl', 'es-uy', 'es-py', 'es-bo', 'es-sv', 'es-hn',
-                            'es-ni', 'es-pr'];
+var latinAmericanSpanishes = {
+  'es-419': 'es_419',
+  'es-mx': 'es_419',
+  'es-gt': 'es_419',
+  'es-cr': 'es_419',
+  'es-pa': 'es_419',
+  'es-do': 'es_419',
+  'es-ve': 'es_419',
+  'es-co': 'es_419',
+  'es-pe': 'es_419',
+  'es-ar': 'es_419',
+  'es-ec': 'es_419',
+  'es-cl': 'es_419',
+  'es-uy': 'es_419',
+  'es-py': 'es_419',
+  'es-bo': 'es_419',
+  'es-sv': 'es_419',
+  'es-hn': 'es_419',
+  'es-ni': 'es_419',
+  'es-pr': 'es_419',
+};
 
-var chineseVersions = ['zh-tw'];
+var chineseVersions = {
+  'zh-tw': 'zh_TW',
+};
 
 var getUserLanguage = function(req, res, next){
   var getFromBrowser = function(){
@@ -97,10 +117,9 @@ var getUserLanguage = function(req, res, next){
       }
 
       if(matches[0] === 'es'){
-        return (latinAmericanSpanishes.indexOf(acceptedCompleteLang) !== -1) ? 'es_419' : 'es';
+        return latinAmericanSpanishes[acceptedCompleteLang] || 'es';
       }else if(matches[0] === 'zh'){
-        var iChinese = chineseVersions.indexOf(acceptedCompleteLang.toLowerCase());
-        return (iChinese !== -1) ? chineseVersions[iChinese] : 'zh';
+        return chineseVersions[acceptedCompleteLang] || 'zh';
       }else{
         return en;
       }
@@ -158,4 +177,4 @@ module.exports.enTranslations = function(){ // stringName and vars are the allow
   var args = Array.prototype.slice.call(arguments, 0);
   args.push(language.code);
   return shared.i18n.t.apply(null, args);
-};
+};

website/src/libs/api-v3/analyticsService.js

@@ -10,7 +10,6 @@ import {
 import { content as Content } from '../../../../common';
 
 require('coffee-script');
-require('../../libs/i18n');
 
 const AMPLIUDE_TOKEN = nconf.get('AMPLITUDE_KEY');
 const GA_TOKEN = nconf.get('GA_ID');

website/src/libs/api-v3/i18n.js

@@ -0,0 +1,118 @@
+import fs from 'fs';
+import path from 'path';
+import _ from 'lodash';
+import shared from '../../../../common';
+
+export const localePath = path.join(__dirname, '/../../../../common/locales/');
+
+// Store translations
+export let translations = {};
+// Store MomentJS localization files
+export let momentLangs = {};
+
+// Handle differencies in language codes between MomentJS and /locales
+let momentLangsMapping = {
+  en: 'en-gb',
+  en_GB: 'en-gb', // eslint-disable-line camelcase
+  no: 'nn',
+  zh: 'zh-cn',
+  es_419: 'es', // eslint-disable-line camelcase
+};
+
+function _loadTranslations (locale) {
+  let files = fs.readdirSync(path.join(localePath, locale));
+
+  translations[locale] = {};
+
+  files.forEach((file) => {
+    if (path.extname(file) !== '.json') return;
+
+    // We use require to load and parse a JSON file
+    _.merge(translations[locale], require(path.join(localePath, locale, file))); // eslint-disable-line global-require
+  });
+}
+
+// First fetch English strings so we can merge them with missing strings in other languages
+_loadTranslations('en');
+
+// Then load all other languages
+fs.readdirSync(localePath).forEach((file) => {
+  if (file === 'en' || fs.statSync(path.join(localePath, file)).isDirectory() === false) return;
+  _loadTranslations(file);
+
+  // Merge missing strings from english
+  _.defaults(translations[file], translations.en);
+});
+
+// Add translations to shared
+shared.i18n.translations = translations;
+
+export let langCodes = Object.keys(translations);
+
+export let avalaibleLanguages = langCodes.map((langCode) => {
+  return {
+    code: langCode,
+    name: translations[langCode].languageName,
+  };
+});
+
+langCodes.forEach((code) => {
+  let lang = _.find(avalaibleLanguages, {code});
+
+  lang.momentLangCode = momentLangsMapping[code] || code;
+
+  try {
+    // MomentJS lang files are JS files that has to be executed in the browser so we load them as plain text files
+    // We wrap everything in a try catch because the file might not exist
+    let f = fs.readFileSync(path.join(__dirname, `/../../../node_modules/moment/locale/${lang.momentLangCode}.js`), 'utf8');
+
+    momentLangs[code] = f;
+  } catch (e) { // eslint-disable-lint no-empty
+    // TODO implement some type of error loggin?
+    // The catch block is mandatory so can't be removed
+  }
+});
+
+// Remove en_GB from langCodes checked by browser to avoid it being
+// used in place of plain original 'en' (it's an optional language that can be enabled only in setting)
+export let defaultLangCodes = _.without(langCodes, 'en_GB');
+
+// A map of languages that have different versions and the relative versions
+export let multipleVersionsLanguages = {
+  es: {
+    'es-419': 'es_419',
+    'es-mx': 'es_419',
+    'es-gt': 'es_419',
+    'es-cr': 'es_419',
+    'es-pa': 'es_419',
+    'es-do': 'es_419',
+    'es-ve': 'es_419',
+    'es-co': 'es_419',
+    'es-pe': 'es_419',
+    'es-ar': 'es_419',
+    'es-ec': 'es_419',
+    'es-cl': 'es_419',
+    'es-uy': 'es_419',
+    'es-py': 'es_419',
+    'es-bo': 'es_419',
+    'es-sv': 'es_419',
+    'es-hn': 'es_419',
+    'es-ni': 'es_419',
+    'es-pr': 'es_419',
+  },
+  zh: {
+    'zh-tw': 'zh_TW',
+  },
+};
+
+// Export en strings only, temporary solution for mobile
+// This is copied from middlewares/locals#t()
+// TODO review if this can be removed since the old mobile app is no longer active
+// stringName and vars are the allowed parameters
+export function enTranslations (...args) {
+  let language = _.find(avalaibleLanguages, {code: 'en'});
+
+  // language.momentLang = ((!isStaticPage && i18n.momentLangs[language.code]) || undefined);
+  args.push(language.code);
+  return shared.i18n.t(...args);
+}

website/src/middlewares/api-v3/getUserLanguage.js

@@ -0,0 +1,79 @@
+import { model as User } from '../../models/user';
+import accepts from 'accepts';
+import _ from 'lodash';
+import {
+  translations,
+  defaultLangCodes,
+  multipleVersionsLanguages,
+} from '../../libs/api-v3/i18n';
+
+function _getUniqueListOfLanguages (languages) {
+  let acceptableLanguages = _(languages).map((lang) => {
+    return lang.slice(0, 2);
+  }).uniq().value();
+
+  let uniqueListOfLanguages = _.intersection(acceptableLanguages, defaultLangCodes);
+
+  return uniqueListOfLanguages;
+}
+
+function _checkForApplicableLanguageVariant (originalLanguageOptions) {
+  let languageVariant = _.find(originalLanguageOptions, (accepted) => {
+    let trimmedAccepted = accepted.slice(0, 2);
+
+    return multipleVersionsLanguages[trimmedAccepted];
+  });
+
+  return languageVariant;
+}
+
+function _getFromBrowser (req) {
+  let originalLanguageOptions = accepts(req).languages();
+  let uniqueListOfLanguages = _getUniqueListOfLanguages(originalLanguageOptions);
+  let baseLanguage = (uniqueListOfLanguages[0] || '').toLowerCase();
+  let languageMapping = multipleVersionsLanguages[baseLanguage];
+
+  if (languageMapping) {
+    let languageVariant = _checkForApplicableLanguageVariant(originalLanguageOptions);
+
+    if (languageVariant) {
+      languageVariant = languageVariant.toLowerCase();
+    } else {
+      return 'en';
+    }
+
+    return languageMapping[languageVariant] || baseLanguage;
+  } else {
+    return baseLanguage || 'en';
+  }
+}
+
+function _getFromUser (user, req) {
+  let preferredLang = user && user.preferences && user.preferences.language;
+  let lang = translations[preferredLang] ? preferredLang : _getFromBrowser(req);
+
+  return lang;
+}
+
+export default function getUserLanguage (req, res, next) {
+  if (req.query.lang) { // In case the language is specified in the request url, use it
+    req.language = translations[req.query.lang] ? req.query.lang : 'en';
+    return next();
+  } else if (req.locals && req.locals.user) { // If the request is authenticated, use the user's preferred language
+    req.language = _getFromUser(req.locals.user, req);
+    return next();
+  } else if (req.session && req.session.userId) { // Same thing if the user has a valid session
+    User.findOne({
+      _id: req.session.userId,
+    }, 'preferences.language')
+    .exec()
+    .then((user) => {
+      req.language = _getFromUser(user, req);
+      return next();
+    })
+    .catch(next);
+  } else { // Otherwise get from browser
+    req.language = _getFromUser(null, req);
+    return next();
+  }
+}

website/src/middlewares/locals.js

@@ -2,7 +2,7 @@ var nconf = require('nconf');
 var _ = require('lodash');
 var utils = require('../libs/utils');
 var shared = require('../../../common');
-var i18n = require('../libs/i18n');
+var i18n = require('../libs/api-v2/i18n');
 var buildManifest = require('../libs/buildManifest');
 var shared = require('../../../common');
 var forceRefresh = require('./forceRefresh');

website/src/routes/api-v2/auth.js

@@ -1,6 +1,6 @@
 var auth = require('../../controllers/api-v2/auth');
 var express = require('express');
-var i18n = require('../../libs/i18n');
+var i18n = require('../../libs/api-v2/i18n');
 var router = new express.Router();
 
 /* auth.auth*/

website/src/routes/api-v2/coupon.js

@@ -3,7 +3,7 @@ var express = require('express');
 var router = new express.Router();
 var auth = require('../../controllers/api-v2/auth');
 var coupon = require('../../controllers/api-v2/coupon');
-var i18n = require('../../libs/i18n');
+var i18n = require('../../libs/api-v2/i18n');
 
 router.get('/api/v2/coupons', auth.authWithUrl, i18n.getUserLanguage, coupon.ensureAdmin, coupon.getCoupons);
 router.post('/api/v2/coupons/generate/:event', auth.auth, i18n.getUserLanguage, coupon.ensureAdmin, coupon.generateCoupons);

website/src/routes/api-v2/swagger.js

@@ -18,7 +18,7 @@ var nconf = require("nconf");
 var cron = user.cron;
 var _ = require('lodash');
 var content = require('../../../../common').content;
-var i18n = require('../../libs/i18n');
+var i18n = require('../../libs/api-v2/i18n');
 var forceRefresh = require('../../middlewares/forceRefresh').middleware;
 
 module.exports = function(swagger, v2) {

website/src/routes/api-v2/unsubscription.js

@@ -1,6 +1,6 @@
 var express = require('express');
 var router = new express.Router();
-var i18n = require('../../libs/i18n');
+var i18n = require('../../libs/api-v2/i18n');
 var unsubscription = require('../../controllers/api-v2/unsubscription');
 
 router.get('/unsubscribe', i18n.getUserLanguage, unsubscription.unsubscribe);

website/src/routes/dataexport.js

@@ -3,7 +3,7 @@ var router = new express.Router();
 var dataexport = require('../controllers/dataexport');
 var auth = require('../controllers/api-v2/auth');
 var nconf = require('nconf');
-var i18n = require('../libs/i18n');
+var i18n = require('../libs/api-v2/i18n');
 var locals = require('../middlewares/locals');
 
 /* Data export */

website/src/routes/pages.js

@@ -3,7 +3,7 @@ var express = require('express');
 var router = new express.Router();
 var _ = require('lodash');
 var locals = require('../middlewares/locals');
-var i18n = require('../libs/i18n');
+var i18n = require('../libs/api-v2/i18n');
 
 // -------- App --------
 router.get('/', i18n.getUserLanguage, locals, function(req, res) {

website/src/routes/payments.js

@@ -3,7 +3,7 @@ var express = require('express');
 var router = new express.Router();
 var auth = require('../controllers/api-v2/auth');
 var payments = require('../controllers/payments');
-var i18n = require('../libs/i18n');
+var i18n = require('../libs/api-v2/i18n');
 
 router.get('/paypal/checkout', auth.authWithUrl, i18n.getUserLanguage, payments.paypalCheckout);
 router.get('/paypal/checkout/success', i18n.getUserLanguage, payments.paypalCheckoutSuccess);

website/src/server.js

@@ -17,7 +17,7 @@ import attachMiddlewares from './middlewares/api-v3/index';
 utils.setupConfig();
 
 // Setup translations
-// let i18n = require('./libs/i18n');
+// let i18n = require('./libs/api-v2/i18n');
 
 const IS_PROD = nconf.get('IS_PROD');
 // const IS_DEV = nconf.get('IS_DEV');