Add rake task

Author: michael-misshore

lib/generators/critical_path_css/install_generator.rb

@@ -4,13 +4,10 @@ module CriticalPathCss
   class InstallGenerator < Rails::Generators::Base
     source_root File.expand_path('..', __FILE__)
 
-    # Copy all needed stylesheets in the asset directory of the application
-    def copy_stylesheets
-      FileUtils.mkdir_p "app/assets/stylesheets/bootstrap_overrides"
-
-      copy_file "../../../app/assets/stylesheets/twitter/bootstrap.css.scss",        "app/assets/stylesheets/bootstrap_overrides/base.css.scss"
-      copy_file "../../../app/assets/stylesheets/twitter/bootstrap/_variables.scss", "app/assets/stylesheets/bootstrap_overrides/variables.css.scss"
-      copy_file "templates/bootstrap_overrides.css.scss",                            "app/assets/stylesheets/bootstrap_overrides/bootstrap_overrides.css.scss"
+    # Copy the needed rake task for generating critical CSS
+    def copy_rake_task
+      task_filename = 'critical_path_css.rake'
+      copy_file "../../tasks/#{task_filename}", "lib/tasks/#{task_filename}"
     end
   end
 end

lib/tasks/critical_path_css.rake

@@ -0,0 +1,15 @@
+require 'critical-path-css'
+
+namespace :critical_path_css do
+  @base_url = Rails.env.production? ? 'http://example.com' : 'http://localhost:3000'
+  @routes = %w{
+    /
+  }
+
+  desc "Generate critical CSS for the routes defined"
+  task :generate => :environment do
+    @main_css_path = ActionController::Base.helpers.stylesheet_path('application.css').to_s
+
+    CriticalPathCss.generate(@main_css_path, @base_url, @routes)
+  end
+end