module MediamtxPlayback
  extend ActiveSupport::Concern

  private

  def mediamtx_paths_index
    mediamtx_paths_index_for_url(MatchLiveTv.mediamtx_api_url)
  end

  def mediamtx_paths_index_for(session)
    mediamtx_paths_index_for_url(session.mediamtx_api_base_url)
  end

  def mediamtx_paths_index_for_url(api_url)
    @mediamtx_paths_by_origin ||= {}
    @mediamtx_paths_by_origin[api_url] ||= Mediamtx::Client.new(base_url: api_url).list_paths.index_by { |i| i["name"] }
  end

  def mediamtx_path_info(session, path_name: mediamtx_playback_path_name(session))
    mediamtx_paths_index_for(session)[path_name]
  end

  def mediamtx_playback_path_name(session)
    session.effective_hls_path_name
  end

  # Player HLS: path grezzo MediaMTX (live/match_{uuid}).
  def mediamtx_stream_playable?(session)
    return false if session.terminal?

    mediamtx_path_has_output?(session)
  end

  def mediamtx_path_has_output?(session)
    info = mediamtx_path_info(session)
    info && (info["ready"] || info["available"] || info["online"])
  end

  def mediamtx_publisher_online?(session)
    info = mediamtx_paths_index_for(session)[session.mediamtx_path_name]
    info && info["online"]
  end
end