mconf/mconf-web

# -*- coding: utf-8 -*-
# This file is part of Mconf-Web, a web application that provides access
# to the Mconf webconferencing system. Copyright (C) 2010-2015 Mconf.
#
# This file is licensed under the Affero General Public License version
# 3 or later. See the LICENSE file.

# Validates the value of an attribute against BigbluebuttonRoom's slug. Used
# for models that have a room and use one of its attributes to generate the
# slug of this room.
# Invalidates the record if the value is already taken.
# Uses case-insensitive comparisons.
class RoomSlugUniquenessValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    unless value.blank?

      # all rooms with the same slug
      rooms = BigbluebuttonRoom.where("lower(slug) = ?", value.downcase)
      if record.is_a?(User) || record.is_a?(Space) || record.is_a?(BigbluebuttonRoom)
        my_room = record.try(:bigbluebutton_room) ? record.bigbluebutton_room : record
        rooms = rooms.where.not(id: my_room.id) if my_room.present?
      end

      # blacklisted names
      restricted_names = Mconf::Routes.reserved_names("/#{Rails.application.config.conf_scope_rooms}")

      if rooms.count > 0 || restricted_names.include?(value)
        record.errors[attribute] << (options[:message] || I18n.t('errors.messages.taken'))
      end
    end
  end
end