module Evergreen
  class InstallGenerator < Rails::Generators::Base
    source_root File.expand_path("../templates", __FILE__)

    def copy_templates
      copy_file "home.html.erb", "app/views/pages/home.html.erb"
      @model_name = 'Page'

      template "evergreen.rb.erb",
               "config/initializers/evergreen.rb"

      template "page.rb.erb",
               "app/models/page.rb"

      template "show.html.erb",
               "app/views/pages/show.html.erb"

      template "page_spec.rb.erb",
               "spec/models/page_spec.rb"

      template "pages_controller.rb.erb",
               "app/controllers/pages_controller.rb"
    end

    def setup_routes
      ["root :to => 'pages#home'",
       "get '*path' => 'pages#show', :as => :page"].each do |routing_code|
        log :route, routing_code
        sentinel = %r(^end$)

        in_root do
          inject_into_file 'config/routes.rb',
                           "\n  #{routing_code}\n",
                           { :before => sentinel, :verbose => false }
        end
      end
    end

    def add_rescues
      rescues = %q{  rescue_from 'StandardError', with: :server_error
  rescue_from 'ActionView::MissingTemplate', with: :not_found
  rescue_from 'ActiveRecord::RecordNotFound', with: :not_found}
      sentinel = %r(^end$)

      in_root do
        inject_into_file 'app/controllers/application_controller.rb',
                         "\n#{rescues}\n",
                         { :before => sentinel, :verbose => false }
      end
    end

    def create_migrations
      rake "evergreen:install:migrations"
    end
  end
end