discourse/app/serializers/user_notification_total_serializer.rb

# frozen_string_literal: true

class UserNotificationTotalSerializer < ApplicationSerializer
  attributes :username,
             :unread_notifications,
             :unread_personal_messages,
             :unseen_reviewables,
             :topic_tracking,
             :group_inboxes

  def unread_notifications
    object.all_unread_notifications_count - new_personal_messages_notifications_count
  end

  def include_unread_personal_messages?
    object.in_any_groups?(SiteSetting.personal_message_enabled_groups_map)
  end

  def unread_personal_messages
    new_personal_messages_notifications_count
  end

  def include_unseen_reviewables?
    scope.user.staff?
  end

  def unseen_reviewables
    Reviewable.unseen_reviewable_count(object)
  end

  def topic_tracking
    TopicTrackingState.report_totals(object)
  end

  def group_inboxes
    group_inbox_data =
      Notification
        .unread
        .where(
          user_id: scope.user.id,
          notification_type: Notification.types[:group_message_summary],
        )
        .pluck(:data)

    results = []

    return results if group_inbox_data.blank?

    group_inbox_data.map do |json|
      data = JSON.parse(json, symbolize_names: true)

      results << {
        group_id: data[:group_id],
        group_name: data[:group_name],
        count: data[:inbox_count],
      }
    end

    results
  end

  def new_personal_messages_notifications_count
    @new_personal_messages_notifications_count ||= object.new_personal_messages_notifications_count
  end
end