module SpreeCmd

  class Extension < Thor::Group
    include Thor::Actions

    desc "builds a spree extension"
    argument :file_name, :type => :string, :desc => 'rails app_path', :default => '.'

    source_root File.expand_path('../templates/extension', __FILE__)

    def generate
      use_prefix "spree_"

      empty_directory file_name

      directory "app", "#{file_name}/app"
      directory "lib", "#{file_name}/lib"
      directory "script", "#{file_name}/script"

      template "extension.gemspec", "#{file_name}/#{file_name}.gemspec"
      template "Gemfile", "#{file_name}/Gemfile"
      template "gitignore", "#{file_name}/.gitignore"
      template "LICENSE", "#{file_name}/LICENSE"
      template "Rakefile", "#{file_name}/Rakefile"
      template "README.md", "#{file_name}/README.md"
      template "config/routes.rb", "#{file_name}/config/routes.rb"
      template "config/locales/en.yml", "#{file_name}/config/locales/en.yml"
      template "rspec", "#{file_name}/.rspec"
      template "spec/spec_helper.rb.tt", "#{file_name}/spec/spec_helper.rb"
      template "Versionfile", "#{file_name}/Versionfile"
    end

    def final_banner
      say %Q{
        #{'*' * 80}

        Your extension has been generated with a gemspec dependency on Spree #{spree_version}.

        Please update the Versionfile to designate compatibilty with different versions of Spree.
        See http://spreecommerce.com/documentation/extensions.html#versionfile

        Consider listing your extension in the official extension registry http://spreecommerce.com/extensions"

        #{'*' * 80}
      }
    end

    no_tasks do
      def class_name
        Thor::Util.camel_case file_name
      end

      def spree_version
        '1.0.0'
      end

      def use_prefix(prefix)
        unless file_name =~ /^#{prefix}/
          @file_name = prefix + file_name
        end
      end
    end

  end
end
