add upgrade cli command

Reviewed By: mkonicek

Differential Revision: D2559885

fb-gh-sync-id: 785bd6ad855da30c00b170e737a7dd0f3e756430

local-cli/cli.js

@@ -26,13 +26,16 @@ var runAndroid = require('../private-cli/src/runAndroid/runAndroid');
 var server = require('../private-cli/src/server/server');
 var TerminalAdapter = require('yeoman-environment/lib/adapter.js');
 var yeoman = require('yeoman-environment');
+var upgrade = require('../private-cli/src/upgrade/upgrade');
 
 var documentedCommands = {
   'start': [server, 'starts the webserver'],
   'bundle': [bundle, 'builds the javascript bundle for offline use'],
   'new-library': [library, 'generates a native library bridge'],
   'android': [generateWrapper, 'generates an Android project for your app'],
-  'run-android': [runAndroid, 'builds your app and starts it on a connected Android emulator or device']
+  'run-android': [runAndroid, 'builds your app and starts it on a connected Android emulator or device'],
+  'upgrade': [upgrade, 'upgrade your app\'s template files to the latest version; run this after ' +
+                       'updating the react-native version in your package.json and running npm install']
 };
 
 var undocumentedCommands = {

local-cli/generator-android/index.js

@@ -29,6 +29,11 @@ module.exports = yeoman.generators.NamedBase.extend({
       type: String,
       defaults: 'com.' + this.name.toLowerCase()
     });
+    this.option('upgrade', {
+      desc: 'Specify an upgrade',
+      type: Boolean,
+      defaults: false
+    });
   },
 
   initializing: function() {
@@ -42,15 +47,29 @@ module.exports = yeoman.generators.NamedBase.extend({
       package: this.options.package,
       name: this.name
     };
-    this.fs.copyTpl(
-      this.templatePath(path.join('src', '**')),
-      this.destinationPath('android'),
-      templateParams
-    );
-    this.fs.copy(
-      this.templatePath(path.join('bin', '**')),
-      this.destinationPath('android')
-    );
+    if (!this.options.upgrade) {
+      this.fs.copyTpl(
+        this.templatePath(path.join('src', '**')),
+        this.destinationPath('android'),
+        templateParams
+      );
+      this.fs.copy(
+        this.templatePath(path.join('bin', '**')),
+        this.destinationPath('android')
+      );
+    } else {
+      this.fs.copyTpl(
+        this.templatePath(path.join('src', '*')),
+        this.destinationPath('android'),
+        templateParams
+      );
+      this.fs.copyTpl(
+        this.templatePath(path.join('src', 'app', '*')),
+        this.destinationPath(path.join('android', 'app')),
+        templateParams
+      );
+    }
+
     var javaPath = path.join.apply(
       null,
       ['android', 'app', 'src', 'main', 'java'].concat(this.options.package.split('.'))

local-cli/generator/index.js

@@ -26,16 +26,21 @@ module.exports = yeoman.generators.NamedBase.extend({
       type: Boolean,
       defaults: false
     });
+    this.option('upgrade', {
+      desc: 'Specify an upgrade',
+      type: Boolean,
+      defaults: false
+    });
 
     // this passes command line arguments down to the composed generators
-    var args = arguments[0];
+    var args = {args: arguments[0], options: this.options};
     if (!this.options['skip-ios']) {
-      this.composeWith('react:ios', {args: args}, {
+      this.composeWith('react:ios', args, {
         local: require.resolve(path.resolve(__dirname, '..', 'generator-ios'))
       });
     }
     if (!this.options['skip-android']) {
-      this.composeWith('react:android', {args: args}, {
+      this.composeWith('react:android', args, {
         local: require.resolve(path.resolve(__dirname, '..', 'generator-android'))
       });
     }
@@ -59,6 +64,10 @@ module.exports = yeoman.generators.NamedBase.extend({
   },
 
   writing: function() {
+    if (this.options.upgrade) {
+      // never upgrade index.*.js files
+      return;
+    }
     if (!this.options['skip-ios']) {
       this.fs.copyTpl(
         this.templatePath('index.ios.js'),

private-cli/src/cli.js

@@ -13,11 +13,13 @@ const Config = require('./util/Config');
 const dependencies = require('./dependencies/dependencies');
 const Promise = require('promise');
 const server = require('./server/server');
+const upgrade = require('./upgrade/upgrade');
 
 const documentedCommands = {
   bundle: bundle,
   dependencies: dependencies,
   server: server,
+  upgrade,
 };
 
 const hiddenCommands = {

private-cli/src/upgrade/upgrade.js

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const Promise = require('promise');
+const yeoman = require('yeoman-environment');
+
+module.exports = function upgrade(args, config) {
+  args = args || process.argv;
+  let env = yeoman.createEnv();
+  let name = JSON.parse(fs.readFileSync('package.json', 'utf8')).name;
+  let generatorPath = path.join(__dirname, '..', '..', '..', 'local-cli', 'generator');
+  env.register(generatorPath, 'react:app');
+  let generatorArgs = ['react:app', name].concat(args);
+  return new Promise((resolve) => env.run(generatorArgs, {upgrade: true}, resolve));
+};