text: #pragma once
  
  #include <Access/SettingsProfileElement.h>
  #include <Core/UUID.h>
  #include <boost/container/flat_set.hpp>
  #include <mutex>
  
  
  namespace DB
  {
  struct SettingsProfilesInfo;
  
  /// Watches settings profiles for a specific user and roles.
  class EnabledSettings
  {
  public:
      struct Params
      {
          UUID user_id;
          boost::container::flat_set<UUID> enabled_roles;
          SettingsProfileElements settings_from_enabled_roles;
          SettingsProfileElements settings_from_user;
  
          auto toTuple() const { return std::tie(user_id, enabled_roles, settings_from_enabled_roles, settings_from_user); }
          friend bool operator ==(const Params & lhs, const Params & rhs) { return lhs.toTuple() == rhs.toTuple(); }
          friend bool operator !=(const Params & lhs, const Params & rhs) { return !(lhs == rhs); }
          friend bool operator <(const Params & lhs, const Params & rhs) { return lhs.toTuple() < rhs.toTuple(); }
          friend bool operator >(const Params & lhs, const Params & rhs) { return rhs < lhs; }
          friend bool operator <=(const Params & lhs, const Params & rhs) { return !(rhs < lhs); }
          friend bool operator >=(const Params & lhs, const Params & rhs) { return !(lhs < rhs); }
      };
  
      /// Returns the default settings come from settings profiles defined for the user
      /// and the roles passed in the constructor.
      std::shared_ptr<const SettingsProfilesInfo> getInfo() const;
  
      ~EnabledSettings();
  
  private:
      friend class SettingsProfilesCache;
      EnabledSettings(const Params & params_);
      void setInfo(const std::shared_ptr<const SettingsProfilesInfo> & info_);
  
      const Params params;
      std::shared_ptr<const SettingsProfilesInfo> info;
      mutable std::mutex mutex;
  };
  }
  