module Bootsnap::LoadPathCache

def setup(cache_path:, development_mode:, ignore_directories:, readonly: false)
  unless supported?
    warn("[bootsnap/setup] Load path caching is not supported on this implementation of Ruby") if $VERBOSE
    return
  end
  store = Store.new(cache_path, readonly: readonly)
  @loaded_features_index = LoadedFeaturesIndex.new
  PathScanner.ignored_directories = ignore_directories if ignore_directories
  @load_path_cache = Cache.new(store, $LOAD_PATH, development_mode: development_mode)
  @enabled = true
  require_relative("load_path_cache/core_ext/kernel_require")
  require_relative("load_path_cache/core_ext/loaded_features")
end

def supported?
  if RUBY_PLATFORM.match?(/darwin|linux|bsd|mswin|mingw|cygwin/)
    case RUBY_ENGINE
    when "truffleruby"
      # https://github.com/oracle/truffleruby/issues/3131
      RUBY_ENGINE_VERSION >= "23.1.0"
    when "ruby"
      true
    else
      false
    end
  end
end

def unload!
  @enabled = false
  @loaded_features_index = nil
  @realpath_cache = nil
  @load_path_cache = nil
  ChangeObserver.unregister($LOAD_PATH) if supported?
end