module Apitizer
  module Routing
    class Path
      attr_reader :steps, :node

      def initialize(steps: [], node: nil)
        @steps = steps
        @node = node
      end

      def address
        @steps.map(&:to_s).join('/')
      end

      def advance(step, node:, on: nil)
        @steps << step
        @node = node
        @on = on
      end

      def permit?(action)
        @node && @node.permit?(action, on: @on)
      end

      def on?(on)
        @on == on
      end

      def clone
        self.class.new(steps: @steps.clone, node: @node)
      end
    end
  end
end