Revert "Deprecate API v2" (#7801)

website/server/middlewares/language.js

@@ -1,91 +0,0 @@
-import { model as User } from '../models/user';
-import accepts from 'accepts';
-import common from '../../../common';
-import _ from 'lodash';
-import {
-  translations,
-  defaultLangCodes,
-  multipleVersionsLanguages,
-} from '../libs/i18n';
-
-const i18n = common.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 function attachTranslateFunction (req, res, next) {
-  res.t = function reqTranslation () {
-    return i18n.t(...arguments, req.language);
-  };
-
-  next();
-}
-
-export 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
-    return User.findOne({
-      _id: req.session.userId,
-    }, 'preferences.language')
-    .lean()
-    .exec()
-    .then((user) => {
-      req.language = _getFromUser(user, req);
-      return next();
-    })
-    .catch(next);
-  } else { // Otherwise get from browser
-    req.language = _getFromUser(null, req);
-    return next();
-  }
-}