class Lecture < ApplicationRecord
  belongs_to :course
  has_one :attendance
  belongs_to :recording, optional: true

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

  def week_number
    ((start_time.beginning_of_week - START_OF_YEAR_5_SEMESTER_1) / 1.week).floor
  end

  def live_video_url
    nil
  end
end