require 'rails/generators/base'
require 'thor'

module AmpHtml
    module Generators

        class ComponentsGenerator < Rails::Generators::Base

            source_root File.expand_path '../../templates/components', __FILE__
            desc 'Install AMP-HTML components.'


            class_option :split, desc: 'Keep an application layout without AMP', type: :boolean, default: false, aliases: '-s'
            class_option :format, desc: 'Set the views format. Defaults to `html`', type: :string, aliases: '-f'


            # COMPONENTS
            class_option :all, desc: 'Install all AMP-HTML components', type: :boolean, default: false, aliases: '-a'

            class_option :analytics, desc: 'Install the AMP-HTML Analytics Component', type: :boolean, default: false
            class_option :iframe, desc: 'Install the AMP-HTML Iframe Component', type: :boolean, default: false
            class_option :notifications, desc: 'Install the AMP-HTML Notifications Component', type: :boolean, default: false
            class_option :anim, desc: 'Install the AMP-HTML Animated Images Component', type: :boolean, default: false
            class_option :ad, desc: 'Install the AMP-HTML Advertisements Component', type: :boolean, default: false
            class_option :social, desc: 'Install the AMP-HTML Social Component', type: :boolean, default: false
            class_option :javascript, desc: 'Install the AMP-HTML Javascript Component', type: :boolean, default: false
            class_option :service_worker, desc: 'Install the AMP-HTML Service Worker Component', type: :boolean, default: false
            class_option :lists, desc: 'Install the AMP-HTML Lists Component', type: :boolean, default: false




            def create_views
                template 'views/_components.html.erb', "app/views/application/amp/_components.#{pick_format}.erb"

                FileUtils.rm_rf 'app/views/application/amp/components'
                template 'views/_google_analytics.html.erb', "app/views/application/amp/components/_google_analytics.#{pick_format}.erb" if options[:all] || options[:analytics] || options[:notifications]
            end

            def create_helpers
                FileUtils.rm_rf 'app/helpers/amp/components'
                template 'helpers/analytics_tag_helper.rb', "app/helpers/amp/components/analytics_tag_helper.rb" if options[:all] || options[:analytics] || options[:notifications]
                template 'helpers/iframe_tag_helper.rb', "app/helpers/amp/components/iframe_tag_helper.rb" if options[:all] || options[:iframe] || options[:javascript] || options[:service_worker]
                template 'helpers/notification_tag_helper.rb', "app/helpers/amp/components/notification_tag_helper.rb" if options[:all] || options[:notifications]
                template 'helpers/anim_tag_helper.rb', "app/helpers/amp/components/anim_tag_helper.rb" if options[:all] || options[:anim]
                template 'helpers/ad_tag_helper.rb', "app/helpers/amp/components/ad_tag_helper.rb" if options[:all] || options[:ad]
                template 'helpers/social_tag_helper.rb', "app/helpers/amp/components/social_tag_helper.rb" if options[:all] || options[:social]
                template 'helpers/javascript_tag_helper.rb', "app/helpers/amp/components/javascript_tag_helper.rb" if options[:all] || options[:javascript]
                template 'helpers/serviceworker_tag_helper.rb', "app/helpers/amp/components/serviceworker_tag_helper.rb" if options[:all] || options[:service_worker]
                template 'helpers/lists_tag_helper.rb', "app/helpers/amp/components/lists_tag_helper.rb" if options[:all] || options[:lists]
            end

            def create_assets
                template 'assets/javascripts/application.js', 'app/assets/javascripts/amp/application.js' if options[:all] || options[:javascript]
            end

            def create_files
                template 'public/remote.html', 'public/remote.html' if options[:all] || options[:ad]
            end

            def show_readme
                readme 'README.md'
            end


            private


            def pick_format
                if options[:format]
                    options[:format]
                else
                    if options[:split]
                        'amp'
                    else
                        'html'
                    end
                end
            end

        end

    end
end