class TestLab

  # Node Error Class
  class NodeError < TestLabError; end

  # Node Class
  #
  # @author Zachary Patten <zachary@jovelabs.net>
  class Node < ZTK::DSL::Base
    STATUS_KEYS   = %w(id instance_id state user ip port provider con net rtr).map(&:to_sym)

    belongs_to :labfile,    :class_name => 'TestLab::Lab'

    has_many   :routers,    :class_name => 'TestLab::Router'
    has_many   :containers, :class_name => 'TestLab::Container'
    has_many   :networks,   :class_name => 'TestLab::Network'

    attribute  :provider
    attribute  :config
    attribute  :components


    autoload :Bind,      'testlab/node/bind'
    autoload :Lifecycle, 'testlab/node/lifecycle'
    autoload :LXC,       'testlab/node/lxc'
    autoload :Resolv,    'testlab/node/resolv'
    autoload :SSH,       'testlab/node/ssh'
    autoload :Status,    'testlab/node/status'

    include TestLab::Node::Bind
    include TestLab::Node::Lifecycle
    include TestLab::Node::LXC
    include TestLab::Node::Resolv
    include TestLab::Node::SSH
    include TestLab::Node::Status


    def initialize(*args)
      super(*args)

      @ui       = TestLab.ui
      @provider = self.provider.new(self.config)
    end

################################################################################

    # Iterates an array of arrays calling the specified method on all the
    # collections of objects
    def call_collections(collections, method_name)
      collections.each do |collection|
        call_methods(collection, method_name)
      end
    end

    # Calls the specified method on all the objects supplied
    def call_methods(objects, method_name)
      objects.each do |object|
        if object.respond_to?(method_name)
          object.send(method_name)
        end
      end
    end

    # Method missing handler
    def method_missing(method_name, *method_args)
      @ui.logger.debug { "NODE METHOD MISSING: #{method_name.inspect}(#{method_args.inspect})" }

      if TestLab::Provider::PROXY_METHODS.include?(method_name)
        result = nil

        if @provider.respond_to?(method_name)
          @ui.logger.debug { "@provider.send(#{method_name.inspect}, #{method_args.inspect})" }
          result = @provider.send(method_name, *method_args)
        else
          raise TestLab::ProviderError, "Your provider does not respond to the method '#{method_name}'!"
        end

        result
      else
        super(method_name, *method_args)
      end
    end

    class << self

      # Returns the path to the gems provider templates
      def template_dir
        File.join(TestLab.gem_dir, "lib", "testlab", "node", "templates")
      end

    end

  end

end