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/*
 * LogManager.cpp
 *
 * Copyright (C) 2008 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/>.
 */

#include "LogManager.h"
#include "ConfigEntry.h"
#include "ConfigManager.h"
#include "Backends/ConsoleLogger.h"
#include "Backends/FileLogger.h"

namespace Mad {
namespace Common {

SingletonPtr<LogManager> LogManager::logManager;


bool LogManager::handleConfigEntry(const ConfigEntry &entry, bool handled) {
  if(handled)
    return false;

  if(entry[0].getKey().matches("Logger")) {
    if(entry[0][0].matches("Console")) {
      if(entry[1].empty()) {
        registerLogger(SharedPtr<Logger>(new Backends::ConsoleLogger()));
        return true;
      }
    }
    else if(entry[1].empty()) {
      Logger::logf(Logger::WARNING, "Unknown logger '%s'.", entry[0][0].c_str());
      return true;
    }
  }

  return false;
}

void LogManager::configFinished() {
  SharedPtr<Backends::ConsoleLogger> consoleLogger;

  if(loggers.empty() || remoteLoggers.empty()) {
    consoleLogger = SharedPtr<Backends::ConsoleLogger>(new Backends::ConsoleLogger());

    if(loggers.empty())
      registerLogger(consoleLogger.cast<Logger>());

    if(remoteLoggers.empty())
      registerLogger(consoleLogger.cast<RemoteLogger>());
  }

  std::auto_ptr<std::queue<Message> > queue = messageQueue;

  while(!queue->empty()) {
    const Message &message = queue->front();
    log(message.category, message.level, message.timestamp, message.message);
    queue->pop();
  }

  std::auto_ptr<std::queue<RemoteMessage> > queue2 = remoteMessageQueue;

  while(!queue2->empty()) {
    const RemoteMessage &message = queue2->front();
    log(message.category, message.level, message.timestamp, message.message, message.source);
    queue2->pop();
  }
}

void LogManager::log(MessageCategory category, MessageLevel level, time_t timestamp, const std::string &message) {
  if(messageQueue.get()) { // Queue message if loggers aren't configured yet
    Message m = {category, level, timestamp, message};
    messageQueue->push(m);
    return;
  }

  for(std::set<SharedPtr<Logger> >::iterator it = loggers.begin(); it != loggers.end(); ++it) {
    SharedPtr<Logger> logger = *it;

    if(logger->getLevel() >= level && logger->isCategorySet(category))
      logger->logMessage(category, level, timestamp, message);
  }
}

void LogManager::log(MessageCategory category, MessageLevel level, time_t timestamp, const std::string &message, const std::string &source) {
  if(remoteMessageQueue.get()) { // Queue message if loggers aren't configured yet
    RemoteMessage m = {category, level, timestamp, message, source};
    remoteMessageQueue->push(m);
    return;
  }

  for(std::set<SharedPtr<RemoteLogger> >::iterator it = remoteLoggers.begin(); it != remoteLoggers.end(); ++it) {
    SharedPtr<RemoteLogger> logger = *it;

    if(logger->getLevel() >= level && logger->isCategorySet(category))
      logger->logMessage(category, level, timestamp, message, source);
  }
}

}
}