# frozen_string_literal: true

# Fact: redis_server_version
#
# Purpose: Retrieve redis-server version if installed
#
Facter.add(:redis_server_version) do
  setcode do
    if Facter::Util::Resolution.which('redis-server')
      redis_server_version_output = Facter::Util::Resolution.exec('redis-server -v')
      # Possible output:
      # Redis server v=2.8.17 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=4c1d5710660b9479
      # Redis server version 2.4.10 (00000000:0)
      match = redis_server_version_output.match(%r{Redis server (?:version|v=)(?<version>[\w.]+).+})
      match ? match[:version] : nil
    end
  end
end