chexpire/app/models/check.rb

# == Schema Information
#
# Table name: checks
#
#  id                :bigint(8)        not null, primary key
#  active            :boolean          default(TRUE), not null
#  comment           :string(255)
#  domain            :string(255)      not null
#  domain_created_at :datetime
#  domain_expires_at :datetime
#  domain_updated_at :datetime
#  kind              :integer          not null
#  last_run_at       :datetime
#  last_success_at   :datetime
#  vendor            :string(255)
#  created_at        :datetime         not null
#  updated_at        :datetime         not null
#  user_id           :bigint(8)
#
# Indexes
#
#  index_checks_on_user_id  (user_id)
#
# Foreign Keys
#
#  fk_rails_...  (user_id => users.id)
#

class Check < ApplicationRecord
  ERROR_DELAY_DAYS = 3

  belongs_to :user
  has_many :logs, class_name: "CheckLog", dependent: :destroy
  has_many :notifications, validate: true, dependent: :destroy
  accepts_nested_attributes_for :notifications,
    allow_destroy: true,
    reject_if: lambda { |at| at["recipient"].blank? && at["interval"].blank? }

  enum kind: [:domain, :ssl]

  self.skip_time_zone_conversion_for_attributes = [
    :domain_created_at,
    :domain_updated_at,
    :domain_expires_at,
  ]

  validates :kind, presence: true
  validates :domain, presence: true
  validate :domain_created_at_past
  validate :domain_updated_at_past
  validates :comment, length: { maximum: 255 }
  validates :vendor, length: { maximum: 255 }

  after_update :reset_notifications
  after_save :enqueue_sync

  scope :active, -> { where(active: true) }
  scope :last_run_failed, -> {
    where("(last_success_at IS NULL AND last_run_at IS NOT NULL)
      OR (last_success_at <= DATE_SUB(last_run_at, INTERVAL 5 MINUTE))")
  }

  scope :kind, ->(kind) { where(kind: kind) }
  scope :by_domain, ->(domain) { where("domain LIKE ?", "%#{domain}%") }
  scope :recurrent_failures, -> {
    interval = "INTERVAL #{ERROR_DELAY_DAYS} DAY"
    where("last_run_at IS NOT NULL AND created_at <= DATE_SUB(NOW(), #{interval})")
      .where("last_success_at IS NULL OR last_success_at <= DATE_SUB(last_run_at, #{interval})")
  }

  def self.default_sort
    [:domain_expires_at, :asc]
  end

  def in_error?
    return false if created_at > ERROR_DELAY_DAYS.days.ago
    return false if last_run_at.nil?
    return true if last_success_at.nil?

    last_success_at < ERROR_DELAY_DAYS.days.ago
  end

  def days_from_last_success
    return unless last_success_at.present?

    (Date.today - last_success_at.to_date).to_i
  end

  private

  def domain_created_at_past
    errors.add(:domain_created_at, :past) if domain_created_at.present? && domain_created_at.future?
  end

  def domain_updated_at_past
    errors.add(:domain_updated_at, :past) if domain_updated_at.present? && domain_updated_at.future?
  end

  def enqueue_sync
    return unless active?
    return unless saved_changes.key?("domain")

    WhoisSyncJob.perform_later(id) if domain?
    SSLSyncJob.perform_later(id) if ssl?
  end

  def reset_notifications
    return unless (saved_changes.keys & %w[domain domain_expires_at]).present?

    notifications.each(&:reset!)
  end
end