refactor and improve app generator

- change name: matestack_app => matestack:app
- simplify the generation of an app
- change structure of templates

Author: marcoroth

lib/generators/matestack/app/USAGE

@@ -0,0 +1,21 @@
+Description:
+  Stubs out a new matestack app. Pass the app name under_scored.
+
+  If you want so, pass the option '--all_inclusive' to also create
+  a corresponding matestack example_page, a controller, its action
+  and the route in 'config/routes.rb'.
+
+Example 1:
+  `rails generate matestack:app example_app`
+
+  This will create:
+    app/matestack/apps/example_app.rb
+
+Example 2:
+  `rails generate matestack:app example_app --all_inclusive`
+
+  This will create:
+    app/matestack/apps/example_app.rb
+    app/matestack/pages/example_app/example_page.rb
+    app/controllers/example_app_controller.rb
+    route  get 'example_app/example_page', to: 'example_app#example_page'

lib/generators/matestack/app/app_generator.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Matestack
+  module Generators
+    class AppGenerator < Rails::Generators::NamedBase
+      source_root File.expand_path('templates', __dir__)
+
+      class_option :all_inclusive, type: :boolean, default: false
+
+      def create_app
+        template 'app/matestack/apps/%file_name%.rb.tt'
+
+        if options[:all_inclusive] == true
+          template 'app/controllers/%file_name%_controller.rb'
+
+          route %{get '#{file_name}/example_page', to: '#{file_name}\#example_page'}
+
+          generate "matestack:page example_page --app_name #{file_name} --called_by_app_generator=true"
+
+          puts "You can visit your new matestack apps' example page under http://localhost:3000/#{file_name}/example_page"
+        end
+      end
+    end
+  end
+end

lib/generators/matestack_app/templates/matestack_app_controller.erb renamed to lib/generators/matestack/app/templates/app/controllers/%file_name%_controller.rb.tt

@@ -1,7 +1,5 @@
 class <%= class_name %>Controller < ApplicationController
-
   def example_page
     responder_for(Pages::<%= class_name %>::ExamplePage)
   end
-
 end

lib/generators/matestack_app/templates/matestack_app.erb renamed to lib/generators/matestack/app/templates/app/matestack/apps/%file_name%.rb.tt

@@ -1,5 +1,4 @@
 class Apps::<%= class_name %> < Matestack::Ui::App
-
   # OPTIONAL: Prepare data that gets used on every page of this app
   # def prepare
   #   API calls and db queries go here
@@ -26,5 +25,4 @@ class Apps::<%= class_name %> < Matestack::Ui::App
   #     # your components go here
   #   }
   # end
-
 end

lib/generators/matestack_app/USAGE

@@ -1,9 +1,9 @@
 require 'generator_spec'
-require 'generators/matestack_app/matestack_app_generator'
+require 'generators/matestack/app/app_generator'
 
-describe MatestackAppGenerator, type: :generator do
-  let(:dummy) {File.expand_path(File.join(__FILE__, '..', '..', '..', 'dummy'))}
-  let(:dummy_copy) {File.expand_path(File.join(__FILE__, '..', '..', '..', 'dummy_copy'))}
+describe Matestack::Generators::AppGenerator, type: :generator do
+  let(:dummy) { File.expand_path(File.join(__FILE__, '..', '..', '..', '..', '..', 'dummy')) }
+  let(:dummy_copy) { File.expand_path(File.join(__FILE__, '..', '..', '..', '..', '..', 'dummy_copy')) }
 
   before :each do
     FileUtils.cp_r dummy, dummy_copy
@@ -27,9 +27,9 @@
     run_generator %w(my_example_app --all_inclusive)
 
     assert_file "app/matestack/apps/my_example_app.rb", /class Apps::MyExampleApp < Matestack::Ui::App\b/
-    assert_file "app/matestack/pages/my_example_app/example_page.rb", /class Pages::MyExampleApp::ExamplePage < Matestack::Ui::Page\b/
     assert_file "app/controllers/my_example_app_controller.rb", /class MyExampleAppController < ApplicationController\b/
     assert_file "config/routes.rb", /my_example_app\b/
+    assert_file "app/matestack/pages/my_example_app/example_page.rb", /class Pages::MyExampleApp::ExamplePage < Matestack::Ui::Page\b/
   end
 
 end