Move locale files under api/runtime components

red/api/locales.js

@@ -13,20 +13,52 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
+var fs = require('fs');
+var path = require('path');
 var i18n;
+var supportedLangs = [];
+
+var apiLocalDir = path.resolve(path.join(__dirname,"locales"));
+
+var initSupportedLangs = function() {
+    fs.readdir(apiLocalDir, function(err,files) {
+        if(!err) {
+            supportedLangs = files;
+        }
+    });
+}
+
+function determineLangFromHeaders(acceptedLanguages){
+    var lang = i18n.defaultLang;
+    acceptedLanguages = acceptedLanguages || [];
+    for (var i=0;i<acceptedLanguages.length;i++){
+        if (supportedLangs.indexOf(acceptedLanguages[i]) !== -1){
+            lang = acceptedLanguages[i];
+            break;
+        // check the language without the country code
+        } else if (supportedLangs.indexOf(acceptedLanguages[i].split("-")[0]) !== -1) {
+            lang = acceptedLanguages[i].split("-")[0];
+            break;
+        }
+    }
+    return lang;
+}
+
 module.exports = {
     init: function(runtime) {
         i18n = runtime.i18n;
+        initSupportedLangs();
     },
     get: function(req,res) {
         var namespace = req.params[0];
         namespace = namespace.replace(/\.json$/,"");
-        var lang = i18n.determineLangFromHeaders(req.acceptsLanguages() || []);
+        var lang = determineLangFromHeaders(req.acceptsLanguages() || []);
         var prevLang = i18n.i.lng();
         i18n.i.setLng(lang, function(){
             var catalog = i18n.catalog(namespace,lang);
             res.json(catalog||{});
         });
         i18n.i.setLng(prevLang);
-    }
+    },
+    determineLangFromHeaders: determineLangFromHeaders
 }