hometown/app/models/subscription.rb

# frozen_string_literal: true
# == Schema Information
#
# Table name: subscriptions
#
#  id                          :integer          not null, primary key
#  callback_url                :string           default(""), not null
#  secret                      :string
#  expires_at                  :datetime
#  confirmed                   :boolean          default(FALSE), not null
#  account_id                  :integer          not null
#  created_at                  :datetime         not null
#  updated_at                  :datetime         not null
#  last_successful_delivery_at :datetime
#

class Subscription < ApplicationRecord
  MIN_EXPIRATION = 3600 * 24 * 7
  MAX_EXPIRATION = 3600 * 24 * 30

  belongs_to :account, required: true

  validates :callback_url, presence: true
  validates :callback_url, uniqueness: { scope: :account_id }

  scope :active, -> { where(confirmed: true).where('expires_at > ?', Time.now.utc) }

  def lease_seconds=(str)
    self.expires_at = Time.now.utc + [[MIN_EXPIRATION, str.to_i].max, MAX_EXPIRATION].min.seconds
  end

  def lease_seconds
    (expires_at - Time.now.utc).to_i
  end

  def expired?
    Time.now.utc > expires_at
  end

  before_validation :set_min_expiration

  private

  def set_min_expiration
    self.lease_seconds = 0 unless expires_at
  end
end