# frozen_string_literal: true

module Facts
  module Debian
    module Os
      class Release
        FACT_NAME = 'os.release'
        ALIASES = %w[operatingsystemmajrelease operatingsystemrelease].freeze

        def call_the_resolver
          fact_value = determine_release_for_os

          return Facter::ResolvedFact.new(FACT_NAME, fact_value) unless fact_value

          [Facter::ResolvedFact.new(FACT_NAME, fact_value),
           Facter::ResolvedFact.new(ALIASES.first, fact_value['major'], :legacy),
           Facter::ResolvedFact.new(ALIASES.last, fact_value['full'], :legacy)]
        end

        private

        def determine_release_for_os
          release = Facter::Resolvers::DebianVersion.resolve(:version)
          return unless release

          versions = release.split('.')
          fact_value = {}
          fact_value['full'] = release
          fact_value['major'] = versions[0]
          fact_value['minor'] = versions[1].gsub(/^0([1-9])/, '\1') if versions[1]
          fact_value
        end
      end
    end
  end
end