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/*
 * SystemManager.h
 *
 * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_COMMON_SYSTEMMANAGER_H_
#define MAD_COMMON_SYSTEMMANAGER_H_

#include <set>
#include <string>
#include <vector>

#include <sigc++/slot.h>

namespace Mad {
namespace Common {

class SystemBackend;

class SystemManager {
  private:
    struct Compare {
      bool operator() (const SystemBackend *b1, const SystemBackend *b2);
    };

    static SystemManager systemManager;

    std::set<SystemBackend*, Compare> backends;

  public:
    struct FSInfo {
      std::string fsName;
      std::string mountedOn;
      long long total;
      long long used;
      long long available;
    };

  private:
    SystemManager() {}

  public:
    void registerBackend(SystemBackend *backend) {
      backends.insert(backend);
    }

    void unregisterBackend(SystemBackend *backend) {
      backends.erase(backend);
    }

    bool getUptimeInfo(const sigc::slot<void, unsigned long, unsigned long> &callback);
    bool getMemoryInfo(const sigc::slot<void, unsigned long, unsigned long, unsigned long, unsigned long> &callback);
    bool getLoadInfo(const sigc::slot<void, unsigned long, unsigned long, float, float, float> &callback);

    bool getFSInfo(const sigc::slot<void, const std::vector<FSInfo>& > &callback);

    bool shutdown(const sigc::slot<void> &callback);
    bool reboot(const sigc::slot<void> &callback);

    static SystemManager *get() {
      return &systemManager;
    }
};

}
}

#endif /* MAD_COMMON_SYSTEMMANAGER_H_ */