51 lines
1.1 KiB
Ruby
51 lines
1.1 KiB
Ruby
class Lecture < ApplicationRecord
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belongs_to :course
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has_one :recording, dependent: :nullify
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has_many :tracked_time_entries, dependent: :destroy, as: :subject
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enum :kind, [
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:lecture,
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:problems_class,
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], default: :lecture
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include Trackable, CourseItem
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def prepared?
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tracked_time_entries.where(kind: [:preparation]).any?
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end
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def attended?
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tracked_time_entries.where(kind: [:concurrent, :catchup]).any?
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end
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def entirely_attended_in_person?
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!(tracked_time_entries.where(kind: [:catchup]).any?)
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end
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def reviewed?
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tracked_time_entries.where(kind: [:review]).any?
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end
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def total_preparation_time
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tracked_time_entries.preparation.sum(&:duration).seconds
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end
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def total_attendance_time
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tracked_time_entries.where(kind: [:concurrent, :catchup]).sum(&:duration).seconds
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end
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def total_review_time
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tracked_time_entries.review.sum(&:duration).seconds
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end
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# NAIVE: Assumes that lectures are 50 minutes long, this is true currently but not assured.
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def end_time
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start_time + 50.hour
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end
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def is_live?
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live_video_url.present? && start_time.past? && end_time.future?
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end
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end
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