notification_manager.h

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/**************************************************************************
 *   Copyright (C) 2025 by David S. Register                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
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 **************************************************************************/
 
#ifndef _NOTIFICATION_MANAGER_H__
#define _NOTIFICATION_MANAGER_H__
 
#include <wx/timer.h>
#include "notification.h"
#include "observable_evtvar.h"
#include "comm_appmsg.h"
 
class NotificationMsg : public AppMsg {
public:
  NotificationMsg() : AppMsg(AppMsg::Type::CustomMsg) {}
 
  NotificationMsg(const std::string action,
                  std::shared_ptr<Notification> _notification)
      : AppMsg(AppMsg::Type::CustomMsg),
        action_verb(action),
        notification(_notification) {};
 
  virtual ~NotificationMsg() = default;
 
  const std::string action_verb;
  std::shared_ptr<Notification> notification;
};
 
class NotificationManager {
public:
  static NotificationManager& GetInstance();
 
  NotificationManager(const NotificationManager&) = delete;
  NotificationManager& operator=(const NotificationManager&) = delete;
 
  std::string AddNotification(std::shared_ptr<Notification> _notification);
 
  std::string AddNotification(NotificationSeverity _severity,
                              const std::string& _message,
                              int timeout_secs = -1);
  bool AcknowledgeNotification(const std::string& guid);
 
  bool AcknowledgeAllNotifications();
 
  NotificationSeverity GetMaxSeverity();
 
  const std::vector<std::shared_ptr<Notification>>& GetNotifications() const {
    return active_notifications;
  }
 
  size_t GetNotificationCount() const { return active_notifications.size(); }
  void ScrubNotificationDirectory(int days_to_retain);
 
  EventVar evt_notificationlist_change;
 
private:
  NotificationManager();
  void PersistNotificationAsFile(
      const std::shared_ptr<Notification> _notification);
 
  void OnTimer(wxTimerEvent& event);
 
  std::vector<std::shared_ptr<Notification>> active_notifications;
  wxTimer m_timeout_timer;
};
 
#endif