class VideoAnalysisService
  def presenter(video, video_analysis, audio_analysis)
    VideoAnalysisPresenter.new(
      video,
      video_analysis,
      MatchesPresenter.new(
        video,
        video_analysis,
        audio_analysis,
        all_edl_events(video),
        all_graphics_edl_events(video),
      )
    )
  end

  private

  def all_graphics_edl_events(video)
    if video.graphics_only_edl_file.attached?
      graphics_files_for_request = GraphicsFilesForRequest.new(video, edl_timecode_start(video))
      EdlEventGateway.new(
        graphics_files_for_request,
        "00:00:00:00",
        nil,
      ).edl_events
    else
      []
    end
  end

  def edl_timecode_start(video)
    if video.edl_timecode_start.blank?
      video.update(edl_timecode_start: start_timecode_offset(video))
    end

    video.edl_timecode_start
  end

  def all_edl_events(video)
    EdlEventGateway.new(
      FilesForRequest.new(video),
      "00:00:00:00",
      nil,
    ).edl_events
  end

  def start_timecode_offset(video)
    EdlEventGateway.new(
      FilesForRequest.new(video),
      "00:00:00:00",
      "00:00:00:00",
    ).edl_timecode_start
  end
end