ama-team / cookbook-linux-user-management

require 'set'

require_relative '../mixin/entity'

require_relative 'policy'

require_relative 'privilege'

module AMA

  module Chef

    module User

      module Model

        # Represents Linux user group

        class Group

          include Mixin::Entity

          attribute :id, Symbol

          attribute :members, [Set, T: Symbol], default: Set.new

          attribute :privileges, [Hash, K: Symbol, V: Privilege], default: {}

          attribute :policy, Policy, default: Policy::NONE

          denormalizer_block do |input, type, context, &block|

            if input.is_a?(Hash) && [:id, 'id'].none? { |key| input.key?(key) }

              input[:id] = context.path.current.name

            end

            block.call(input, type, context)

          end

          def initialize(id = nil)

            @id = id

            @members = Set.new

            @privileges = {}

            @policy = Policy::NONE

          end

          def policy=(policy)

            @policy = Policy.wrap(policy)

          end

          # @param [Group] other

          def merge(other)

            raise 'Different ids' unless id == other.id

            members.merge(other.members)

            privileges.merge!(other.privileges)

            self.policy = [policy, other.policy].max

            self

          end

      end

    end

  end

end