module RailsConnector
  module Generators
    class InstallGenerator < Rails::Generators::Base
      desc "Copy Infopark Rails Connector files to your application."

      # Normally, you'd just call 'source_root' as a class method from here,
      # but we need to glob the dir ourselves. Hence our own method.
      def self.source_root
        @source_root ||= File.expand_path("templates", __dir__)
      end

      def install_configuration
        copy_file "initializers/rails_connector.rb", "config/initializers/rails_connector.rb"
        template "app/models/obj.rb.erb", "app/models/obj.rb"
        copy_file "local/configuration.rb", "config/local/configuration.rb"
      end

      def append_asset_manifests
        append_file("app/assets/javascripts/application.js", "//= require infopark_rails_connector")
        gsub_file("app/assets/stylesheets/application.css", "*= require_tree .",
                  "*= require_tree .\n *= require infopark_rails_connector")
      end

      def remove_public_index_html
        remove_file "public/index.html"
        remove_file "app/assets/images/rails.png"
      end

      def patch_default_application_layout
        gsub_file("app/views/layouts/application.html.erb", %r{</head>},
                  "<%= rails_connector_header_tags %>\n</head>")
        gsub_file("app/views/layouts/application.html.erb", %r{</body>},
                  "<%= rails_connector_after_content_tags %>\n</body>")
      end
    end
  end
end