module Padrino
  module Generators
    ##
    # Responsible for generating new task file for Padrino application.
    #
    class Task < Thor::Group
      include Thor::Actions
      include Padrino::Generators::Actions
      include Padrino::Generators::Components::Actions

      Padrino::Generators.add_generator(:task, self)

      class << self
        def source_root; __dir__; end
        def banner; 'padrino-gen task [name]'; end
      end

      desc "Description:\n\n\tpadrino-gen task generates a new task file."

      argument     :name,        desc: 'The name of your application task'
      class_option :root,        desc: 'The root destination',                     aliases: '-r', default: '.', type: :string
      class_option :description, desc: 'The description of your application task', aliases: '-d', default: nil, type: :string
      class_option :namespace,   desc: 'The namespace of your application task',   aliases: '-n', default: nil, type: :string

      # Show help if no ARGV given
      require_arguments!

      def create_task
        validate_namespace name
        self.destination_root = options[:root]
        if in_app_root?
          @task_name = name.to_s.underscore
          @namespace = options[:namespace].underscore if options[:namespace]
          @desc      = options[:description]
          filename   = "#{@task_name}.rake"
          filename   = "#{@namespace}_#{filename}" if @namespace

          template 'templates/task.rb.tt', destination_root('tasks', filename)
        else
          say 'You are not at the root of a Padrino application! (config/boot.rb not found)'
        end
      end
    end
  end
end
