module Producer
  module Core
    class Recipe
      attr_reader :code

      def self.from_file(filepath)
        new(File.read(filepath))
      end

      def initialize(code)
        @code = code
      end

      def evaluate
        dsl = DSL.new(@code)
        dsl.tasks.each.map(&:evaluate)
      end


      class DSL
        attr_reader :tasks

        def initialize(code = nil, &block)
          @tasks = []
          if code
            instance_eval code
          else
            instance_eval &block
          end
        end


        private

        def source(filepath)
          instance_eval File.read("./#{filepath}.rb")
        end

        def task(name, &block)
          @tasks << Task.new(name, &block)
        end
      end
    end
  end
end