Revert "Merge branch 'revert-a88abc7e' into 'develop'"

This reverts merge request !1526

1 files changed, 25 insertions, 2 deletions

diff --git a/src/services/locale/locale.service.js b/src/services/locale/locale.service.js
index 5be99d81..8cef2522 100644
--- a/src/services/locale/locale.service.js
+++ b/src/services/locale/locale.service.js
@@ -1,12 +1,35 @@
+import languagesObject from '../../i18n/messages'
+import ISO6391 from 'iso-639-1'
+import _ from 'lodash'
+
 const specialLanguageCodes = {
   'ja_easy': 'ja',
-  'zh_Hant': 'zh-HANT'
+  'zh_Hant': 'zh-HANT',
+  'zh': 'zh-Hans'
 }
 
 const internalToBrowserLocale = code => specialLanguageCodes[code] || code
 
+const internalToBackendLocale = code => internalToBrowserLocale(code).replace('_', '-')
+
+const getLanguageName = (code) => {
+  const specialLanguageNames = {
+    'ja_easy': 'やさしいにほんご',
+    'zh': '简体中文',
+    'zh_Hant': '繁體中文'
+  }
+  const languageName = specialLanguageNames[code] || ISO6391.getNativeName(code)
+  const browserLocale = internalToBrowserLocale(code)
+  return languageName.charAt(0).toLocaleUpperCase(browserLocale) + languageName.slice(1)
+}
+
+const languages = _.map(languagesObject.languages, (code) => ({ code: code, name: getLanguageName(code) })).sort((a, b) => a.name.localeCompare(b.name))
+
 const localeService = {
-  internalToBrowserLocale
+  internalToBrowserLocale,
+  internalToBackendLocale,
+  languages,
+  getLanguageName
 }
 
 export default localeService