module Berkshelf
  module Vagrant
    # @author Jamie Winsor <jamie@vialstudios.com>
    # @author Andrew Garson <andrew.garson@gmail.com>
    class Config < ::Vagrant::Config::Base
      # @return [String]
      #   path to a knife configuration file
      attr_reader :config_path

      # @return [String]
      #   path to the Berksfile to use with Vagrant
      attr_reader :berksfile_path

      # @return [String]
      #   A path to a client key on disk to use with the Chef Client provisioner to
      #   upload cookbooks installed by Berkshelf.
      attr_reader :client_key

      # @return [String]
      #   A client name (node_name) to use with the Chef Client provisioner to upload
      #   cookbooks installed by Berkshelf.
      attr_accessor :node_name

      # @return [Array<Symbol>]
      #   only cookbooks in these groups will be installed and copied to
      #   Vagrant's shelf
      attr_accessor :only

      # @return [Array<Symbol>]
      #   cookbooks in all other groups except for these will be installed
      #   and copied to Vagrant's shelf
      attr_accessor :except
      attr_accessor :ssl_verify

      def initialize
        @berksfile_path = File.join(Dir.pwd, Berkshelf::DEFAULT_FILENAME)
        @config_path    = Berkshelf::DEFAULT_CONFIG
        @node_name      = nil
        @client_key     = nil
        @except         = Array.new
        @only           = Array.new
        @ssl_verify     = true
      end

      # @param [String] value
      def berksfile_path=(value)
        @berksfile_path = File.expand_path(value)
      end

      # @param [String] value
      def config_path=(value)
        @config_path = File.expand_path(value)
      end

      # @param [String] value
      def client_key=(value)
        @client_key = File.expand_path(value)
      end

      def validate(env, errors)
        if !except.empty? && !only.empty?
          errors.add("A value for berkshelf.empty and berkshelf.only cannot both be defined.")
        end

        if Berkshelf::Vagrant.chef_client?(env.config.global)
          if node_name.nil?
            errors.add("A value for berkshelf.node_name is required when using the chef_client provisioner.")
          end

          if client_key.nil?
            errors.add("A value for berkshelf.client_key is required when using the chef_client provisioner.")
          end
        end
      end
    end
  end
end