module RailsLiveReload
  ENV_FILE = Rails.root.join('.env').to_s
  ENV_SAMPLE_FILE = Rails.root.join('.env.sample').to_s
  CHECKSUMS = {}

  # MonkeyPath Watcher
  class Watcher
    def reload_all
      before_reload(files)
      data = { event: RailsLiveReload::INTERNAL[:socket_events][:reload], files: }.to_json
      @sockets.each { |socket, _| socket.puts data } # rubocop:disable Style/HashEachMethods
    end

    private

    def before_reload(files)
      if files.include?(ENV_SAMPLE_FILE)
        current_checksum = files[ENV_SAMPLE_FILE]
        if current_checksum != CHECKSUMS[ENV_SAMPLE_FILE]
          HotConstants.initialize
          CHECKSUMS[ENV_SAMPLE_FILE] = current_checksum
        end
      end
      return unless files.include?(ENV_FILE)

      current_checksum = files[ENV_FILE]
      return unless current_checksum != CHECKSUMS[ENV_FILE]

      HotConstants.reload!
      CHECKSUMS[ENV_FILE] = current_checksum
    end
  end
end