i18n refactoring, locale loaders, custom strings, fix #231

server/api/controller/locale.js

@@ -0,0 +1,36 @@
+const merge = require('lodash/merge')
+const config = require('../../config')
+const path = require('path')
+const fs = require('fs')
+const log = require('../../log')
+
+const localeController = {
+  async get (req, res) {
+    const locale = req.params.locale
+    const locales = require('../../../locales/index')
+
+    // check if this locale exists
+    if (!locales[locale]) {
+      return res.sendStatus(404)
+    }
+
+    const defaultLocaleMessages = require(`../../../locales/${locale}.json`)
+
+    // check if we have a user custom messages
+    let customLocaleMessages = {}
+    const customLocalePath = path.resolve(config.user_locale, `${locale}.json`)
+    if (config.user_locale && fs.existsSync(customLocalePath)) {
+      try {
+        customLocaleMessages = require(customLocalePath)
+      } catch (e) {
+        log.error(`Error reading custom locale messages: ${e}`)
+      }
+    }
+
+    const ret = merge(defaultLocaleMessages, customLocaleMessages)
+    return res.json(ret)
+
+  }     
+}
+
+module.exports = localeController