#!/usr/bin/env ruby
# frozen_string_literal: true

require 'json'

# This list of legacy fact was obtained from the facter source code:
# grep --no-filename -r ALIASES' =' lib | sed -Ee "s/^ *ALIASES = ('|%w\\[)//" -e "s/('|].freeze)\$//" | tr ' ' '\n' | sort | uniq
LEGACY_FACTS = %w[
  architecture
  augeasversion
  bios_release_date
  bios_vendor
  bios_version
  blockdevice_.*_model
  blockdevice_.*_size
  blockdevice_.*_vendor
  blockdevices
  boardassettag
  boardmanufacturer
  boardproductname
  boardserialnumber
  chassisassettag
  chassistype
  dhcp_servers
  domain
  fqdn
  gid
  hardwareisa
  hardwaremodel
  hostname
  id
  interfaces
  ipaddress_.*
  ipaddress6_.*
  lsbdistcodename
  lsbdistdescription
  lsbdistid
  lsbdistrelease
  lsbmajdistrelease
  lsbminordistrelease
  lsbrelease
  macaddress_.*
  macosx_buildversion
  macosx_productname
  macosx_productversion
  macosx_productversion_major
  macosx_productversion_minor
  manufacturer
  memoryfree
  memoryfree_mb
  memorysize
  memorysize_mb
  mtu_.*
  netmask6_.*
  netmask_.*
  network6_.*
  network_.*
  operatingsystem
  operatingsystemmajrelease
  operatingsystemrelease
  osfamily
  physicalprocessorcount
  processor\d+
  processorcount
  productname
  rubyplatform
  rubysitedir
  rubyversion
  sshdsakey
  sshecdsakey
  sshed25519key
  sshfp_dsa
  sshfp_ecdsa
  sshfp_ed25519
  sshfp_rsa
  sshrsakey
  scope6
  selinux
  selinux_config_mode
  selinux_config_policy
  selinux_current_mode
  selinux_enforced
  selinux_policyversion
  serialnumber
  sp_boot_mode
  sp_boot_rom_version
  sp_boot_volume
  sp_cpu_type
  sp_current_processor_speed
  sp_kernel_version
  sp_l2_cache_core
  sp_l3_cache
  sp_local_host_name
  sp_machine_model
  sp_machine_name
  sp_number_processors
  sp_os_version
  sp_packages
  sp_physical_memory
  sp_platform_uuid
  sp_secure_vm
  sp_serial_number
  sp_smc_version_system
  sp_uptime
  sp_user_name
  swapencrypted
  swapfree
  swapfree_mb
  swapsize
  swapsize_mb
  system32
  uptime
  uptime_days
  uptime_hours
  uptime_seconds
  uuid
  windows_display_version
  windows_edition_id
  windows_installation_type
  windows_product_name
  windows_release_id
  xendomains
  zonename
].map { |re| Regexp.new("\\A#{re}\\z") }

if ARGV.empty?
  warn "usage: #{$PROGRAM_NAME} facts..."
  exit(1)
end

ARGV.each do |filename|
  puts filename
  facts = JSON.parse(File.read(filename))
  facts.delete_if do |key|
    LEGACY_FACTS.any? { |legacy_fact| key.match(legacy_fact) }
  end
  File.write(filename, "#{JSON.pretty_generate(facts)}\n")
end