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/*
 * Logger.h
 *
 * Copyright (C) 2008 Johannes Thorn <dante@g4t3.de>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_CORE_LOGGER_H_
#define MAD_CORE_LOGGER_H_

#include "String.h"

#include <bitset>
#include <boost/date_time/posix_time/ptime.hpp>

namespace Mad {
namespace Core {

class LogManager;

class Logger {
  public:
    friend class LogManager;

    enum MessageLevel {
        LOG_CRITICAL = 1, LOG_ERROR, LOG_WARNING, LOG_DEFAULT, LOG_VERBOSE, LOG_DEBUG
    };

    enum MessageCategory {
        LOG_SYSTEM, LOG_NETWORK, LOG_DAEMON, LOG_USER, LOG_DISK, LOG_PROGRAM, LOG_GENERAL
    };

  private:
    std::bitset<16> categories;
    MessageLevel level;

    std::bitset<16> remoteCategories;
    MessageLevel remoteLevel;

    bool remote;

  protected:
    Logger() : level(LOG_DEFAULT), remoteLevel(LOG_DEFAULT) {setAllCategories(); setAllRemoteCategories(); remote = false;}
    virtual ~Logger() {}

    void log(MessageCategory category, MessageLevel level, boost::posix_time::ptime timestamp, const Core::String &message, const Core::String &source) {
      if((source.isEmpty() && getLevel() >= level && isCategorySet(category))
        || (!source.isEmpty() && remote && getRemoteLevel() >= level && isRemoteCategorySet(category)))
        logMessage(category, level, timestamp, message, source);
    }

    virtual void logMessage(MessageCategory category, MessageLevel level, boost::posix_time::ptime timestamp, const Core::String &message, const Core::String &source) = 0;

  public:
    void setCategory(MessageCategory newCategory) {
      categories.set(newCategory);
    }

    void unsetCategory(MessageCategory oldCategory) {
      categories.reset(oldCategory);
    }

    void setAllCategories() {
      categories.set();
    }

    void unsetAllCategories() {
      categories.reset();
    }

    bool isCategorySet(MessageCategory category) const {
      return categories.test(category);
    }


    void setRemoteCategory(MessageCategory newCategory) {
      remote = true;
      remoteCategories.set(newCategory);
    }

    void unsetRemoteCategory(MessageCategory oldCategory) {
      remote = true;
      remoteCategories.reset(oldCategory);
    }

    void setAllRemoteCategories() {
      remote = true;
      remoteCategories.set();
    }

    void unsetAllRemoteCategories() {
      remote = true;
      remoteCategories.reset();
    }

    bool isRemoteCategorySet(MessageCategory category) const {
      return remoteCategories.test(category);
    }


    MessageLevel getLevel() const {
      return level;
    }

    void setLevel(MessageLevel newLevel) {
      level = newLevel;
    }


    MessageLevel getRemoteLevel() const {
      return remoteLevel;
    }

    void setRemoteLevel(MessageLevel newLevel) {
      remote = true;
      remoteLevel = newLevel;
    }
};

}
}

#endif /* MAD_CORE_LOGGER_H_ */