class Notification < ApplicationRecord
  belongs_to :member

  def self.send_scheduled_for_today
    Member
      .where('expires_on < ?', Date.today - self.templates.first[:to_be_sent_on])
      .filter_map(&:todays_notification)
      .each(&:deliver!)
  end

  def self.templates
    [
      { to_be_sent_on: -60.days, template: "expiration_in_60d" },
      { to_be_sent_on: -30.days, template: "expiration_in_30d" },
      { to_be_sent_on:  0.days, template: "expired" },
      { to_be_sent_on: 30.days, template: "expired_30d_ago" },
      { to_be_sent_on: 60.days, template: "expired_60d_ago" },
      { to_be_sent_on: Config.payment_pending_grace_period, template: "cancelled" },
    ]
  end

  def deliver!
    # TODO: do something about failures

    save!
    NotificationMailer.with(member: self.member).send(template).deliver_now!
    update(status: 'sent', sent_at: Time.current)
  end
end