class Lecture < ApplicationRecord
  belongs_to :course

  enum :status, [
    :undetermined,
    :future,
    :happening_now,
    :attended_in_person,
    :watched_recording,
    :missed,
  ], default: :undetermined

  def week_number
    ((start_time.beginning_of_week - Time.new('2023-10-02')) / 1.week).floor
  end

  def live_video_url
    nil
  end

  def recording_url
    return nil if recording_id.nil?

    "https://uniofbath.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=#{recording_id}"
  end

  def nice_title
    if course.title == "General Relativity"
      regex = /.+L(\d+).*/
      lecture_number = self.title.match(regex)[1].to_i
      return "Lecture #{lecture_number}"
    end

    title
  end
end