move i18n and locales to its own folder; abstract it a bit; detect at initialization; add cmd line option

.gitignore

@@ -24,3 +24,4 @@ test_apps/contracts_app/chains.json
 .embark/
 NOTES
 npm-debug.log
+.tern-port

lib/cmd.js

@@ -2,18 +2,9 @@ const program = require('commander');
 const promptly = require('promptly');
 const utils = require('./utils/utils.js');
 const Embark = require('../lib/index');
-const i18n = require('i18n');
+const i18n = require('./i18n/i18n.js');
 let embark = new Embark;
 
-i18n.configure({
-  locales: ['en', 'pt'],
-  register: global,
-  //updateFiles: false,
-  directory: utils.joinPath(__dirname, '/../locales')
-});
-
-i18n.setLocale('pt');
-
 class Cmd {
   constructor() {
     program.version(embark.version);
@@ -118,8 +109,10 @@ class Cmd {
       .option('--no-color', __('no colors in case it\'s needed for compatbility purposes'))
       .option('--logfile [logfile]', __('filename to output logs (default: %s)', 'none'))
       .option('--loglevel [loglevel]', __('level of logging to display') + ' ["error", "warn", "info", "debug", "trace"]', /^(error|warn|info|debug|trace)$/i, 'debug')
+      .option('--locale [locale]', __('language to use (default: en)'))
       .description(__('run dapp (default: %s)', 'development'))
       .action(function (env, options) {
+        i18n.setOrDetectLocale(options.locale);
         embark.run({
           env: env || 'development',
           serverPort: options.port,
@@ -252,7 +245,6 @@ class Cmd {
       });
   }
 
-
 }
 
 module.exports = Cmd;

lib/i18n/i18n.js

@@ -0,0 +1,42 @@
+const i18n = require('i18n');
+const osLocale = require('os-locale');
+const path = require('path');
+
+const supported_languages = ['en', 'pt'];
+
+i18n.configure({
+  locales: supported_languages,
+  register: global,
+  //updateFiles: false,
+  directory: path.join(__dirname, 'locales')
+});
+
+function isSupported(locale) {
+  return (supported_languages.indexOf(locale.substr(0, 2)) >= 0);
+}
+
+function setLocale(locale) {
+  i18n.setLocale(locale.substr(0, 2));
+}
+
+function setDefaultLocale() {
+  osLocale().then(setLocale).catch();
+}
+
+function setOrDetectLocale(locale) {
+  if (locale && !isSupported(locale)) {
+    console.log("===== locale " + locale + " not supported =====");
+  }
+  if (locale) {
+    return i18n.setLocale(locale.substr(0, 2));
+  }
+  setDefaultLocale();
+}
+
+setDefaultLocale();
+
+module.exports = {
+  i18n: i18n,
+  setOrDetectLocale: setOrDetectLocale
+};
+

lib/i18n/locales/en.json

@@ -69,5 +69,11 @@
 	"instantiated web3.js object configured to the current environment": "instantiated web3.js object configured to the current environment",
 	"to immediatly exit (alias: exit)": "to immediatly exit (alias: exit)",
 	"The web3 object and the interfaces for the deployed contracts and their methods are also available": "The web3 object and the interfaces for the deployed contracts and their methods are also available",
-	"versions in use": "versions in use"
+	"versions in use": "versions in use",
+	"language to use (default: en)": "language to use (default: en)",
+	"executing": "executing",
+	"writing file": "writing file",
+	"errors found while generating": "errors found while generating",
+	"Looking for documentation? You can find it at": "Looking for documentation? You can find it at",
+	"Ready": "Ready"
 }

package.json

@@ -51,6 +51,7 @@
     "live-plugin-manager": "https://github.com/iurimatias/live-plugin-manager.git",
     "merge": "^1.2.0",
     "orbit-db": "^0.17.3",
+    "os-locale": "^2.1.0",
     "parse-json": "^4.0.0",
     "promptly": "^2.1.0",
     "propose": "0.0.5",