# frozen_string_literal: true

module Facter
  module Resolvers
    class ZFS < BaseResolver
      init_resolver

      class << self
        private

        def post_resolve(fact_name, _options)
          @fact_list.fetch(fact_name) { zfs_fact(fact_name) }
        end

        def zfs_fact(fact_name)
          build_zfs_facts
          @fact_list[fact_name]
        end

        def build_zfs_facts
          output = Facter::Core::Execution.execute('zfs upgrade -v', logger: log)
          features_list = output.scan(/^\s+(\d+)/).flatten

          return if features_list.empty?

          @fact_list[:zfs_featurenumbers] = features_list.join(',')
          @fact_list[:zfs_version] = features_list.last
        end
      end
    end
  end
end