discourse/app/jobs/scheduled/pending_reviewables_reminder.rb

# frozen_string_literal: true

module Jobs
  class PendingReviewablesReminder < ::Jobs::Scheduled
    every 15.minutes

    attr_reader :sent_reminder

    def execute(args)
      @sent_reminder = false

      if SiteSetting.notify_about_flags_after > 0
        reviewable_ids =
          Reviewable
            .pending
            .default_visible
            .where("latest_score < ?", SiteSetting.notify_about_flags_after.to_f.hours.ago)
            .order("id DESC")
            .pluck(:id)

        if reviewable_ids.size > 0 && self.class.last_notified_id < reviewable_ids[0]
          usernames = active_moderator_usernames
          mentions = usernames.size > 0 ? "@#{usernames.join(", @")} " : ""

          message =
            GroupMessage.new(
              Group[:moderators].name,
              "reviewables_reminder",
              {
                limit_once_per: false,
                message_params: {
                  mentions: mentions,
                  count: SiteSetting.notify_about_flags_after,
                },
              },
            )

          Topic.transaction do
            message.delete_previous!(match_raw: false)
            @sent_reminder = message.create.present?
          end

          self.class.last_notified_id = reviewable_ids[0]
        end
      end
    end

    def self.last_notified_id
      Discourse.redis.get(last_notified_key).to_i
    end

    def self.last_notified_id=(arg)
      Discourse.redis.set(last_notified_key, arg)
    end

    def self.last_notified_key
      "last_notified_reviewable_id"
    end

    def self.clear_key
      Discourse.redis.del(last_notified_key)
    end

    def active_moderator_usernames
      User.where(moderator: true).human_users.order("last_seen_at DESC").limit(3).pluck(:username)
    end
  end
end