class FileScannerService
  def initialize(storage_location)
    @storage_location = storage_location
  end

  def scan
    return failure_result("Storage location not accessible") unless @storage_location.accessible?

    video_files = find_video_files
    new_videos = process_files(video_files)

    success_result(new_videos)
  rescue => e
    failure_result(e.message)
  end

  private

  def find_video_files
    Dir.glob(File.join(@storage_location.path, "**", "*.{mp4,avi,mkv,mov,wmv,flv,webm,m4v}"))
  end

  def process_files(file_paths)
    new_videos = []

    file_paths.each do |file_path|
      filename = File.basename(file_path)

      next if Video.exists?(filename: filename, storage_location: @storage_location)

      video = Video.create!(
        filename: filename,
        storage_location: @storage_location,
        work: Work.find_or_create_by(title: extract_title(filename))
      )

      new_videos << video
      VideoProcessorJob.perform_later(video.id)
    end

    new_videos
  end

  def extract_title(filename)
    # Simple title extraction - can be enhanced
    File.basename(filename, ".*").gsub(/[\[\(].*?[\]\)]/, "").strip
  end

  def success_result(videos = [])
    { success: true, videos: videos, message: "Found #{videos.length} new videos" }
  end

  def failure_result(message)
    { success: false, message: message }
  end
end