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YuruToot/app/lib/vacuum/preview_cards_vacuum.rb

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# frozen_string_literal: true
class Vacuum::PreviewCardsVacuum
TTL = 1.day.freeze
def initialize(retention_period)
@retention_period = retention_period
end
def perform
vacuum_cached_images! if retention_period?
vacuum_orphaned_records!
end
private
def vacuum_cached_images!
preview_cards_past_retention_period.find_each do |preview_card|
preview_card.image.destroy
preview_card.save
end
end
def vacuum_orphaned_records!
orphaned_preview_cards.in_batches.destroy_all
end
def preview_cards_past_retention_period
PreviewCard.cached.where(PreviewCard.arel_table[:updated_at].lt(@retention_period.ago))
end
def orphaned_preview_cards
PreviewCard.where('NOT EXISTS (SELECT 1 FROM preview_cards_statuses WHERE preview_cards_statuses.preview_card_id = preview_cards.id)').where(PreviewCard.arel_table[:created_at].lt(TTL.ago))
end
def retention_period?
@retention_period.present?
end
end