refactor and improve component generator

- change name: matestack_component => matestack:component
- simplify the genration of a component
- change structure of templates

Author: marcoroth

lib/generators/matestack/component/USAGE

@@ -0,0 +1,20 @@
+Description:
+  Stubs out a new matestack component. Pass the component name, under_scored.
+
+  To create a dynamic component, specify it using the --dynamic option.
+
+  To place this component within a namespace, specify the namespace name under_scored and it
+  will get generated into 'app/matestack/components/namespace/*'.
+
+Example 1:
+  `rails generate matestack:component NAME`
+
+  This will create:
+    app/matestack/components/NAME.rb
+
+Example 2:
+  `rails generate matestack:component NAME --dynamic --namespace sample_namespace`
+
+  This will create:
+    app/matestack/components/sample_namespace/NAME.rb
+    app/matestack/components/sample_namespace/NAME.js

lib/generators/matestack/component/component_generator.rb

@@ -0,0 +1,27 @@
+module Matestack
+  module Generators
+    class ComponentGenerator < Rails::Generators::NamedBase
+      source_root File.expand_path('templates', __dir__)
+
+      class_option :dynamic, type: :boolean, default: false
+      class_option :scss, type: :boolean, default: false
+      class_option :haml, type: :boolean, default: false
+      class_option :namespace, type: :string
+
+      def namespace
+        options[:namespace]
+      end
+
+      def create_component
+        @dynamic = options[:dynamic]
+
+        # Future: Check for matestack-compatible namespacing!
+
+        template 'app/matestack/components/%namespace%/%file_name%.rb.tt'
+        template 'app/matestack/components/%namespace%/%file_name%.js.tt' if options[:dynamic]
+        template 'app/matestack/components/%namespace%/%file_name%.scss.tt' if options[:scss]
+        template 'app/matestack/components/%namespace%/%file_name%.haml.tt' if options[:haml]
+      end
+    end
+  end
+end

lib/generators/matestack_component/templates/matestack_component.haml.erb renamed to lib/generators/matestack/component/templates/app/matestack/components/%namespace%/%file_name%.haml.tt

@@ -1,5 +1,4 @@
 class Components::<% unless @namespace.nil? %><%= @namespace.camelize %>::<% end %><%= class_name %> < Matestack::Ui::<% if @dynamic == true %>DynamicComponent<% else %>StaticComponent<% end %>
-
   def prepare
     # DB queries and API calls go here
   end
@@ -9,5 +8,4 @@ class Components::<% unless @namespace.nil? %><%= @namespace.camelize %>::<% end
       # orchestrate existing matestack components here
     }
   end
-
 end

lib/generators/matestack_component/templates/matestack_component.js.erb renamed to lib/generators/matestack/component/templates/app/matestack/components/%namespace%/%file_name%.js.tt

@@ -1,9 +1,9 @@
 require "generator_spec"
-require 'generators/matestack_component/matestack_component_generator'
+require 'generators/matestack/component/component_generator'
 
-describe MatestackComponentGenerator, 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::ComponentGenerator, 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