/*=========================================================================
                                                                                
  Program:   bbtk
  Module:    $RCSfile: bbtkMessageManager.cxx,v $
  Language:  C++
  Date:      $Date: 2008/01/22 15:02:00 $
  Version:   $Revision: 1.1 $
                                                                                
  Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
  l'Image). All rights reserved. See Doc/License.txt or
  http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
                                                                                
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.
                                                                                
=========================================================================*/
/**
 * \file
 * \brief class MessageManager : Manages the messages displayed by bbtk (code)
 */
#include "bbtkMessageManager.h"

namespace bbtk 
{

  MessageManager::MessageManager() 
    : mMaxMessageLength(8), mAllLevel(0) 
    
  {
    std::string key;
    key ="Core";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Messages generated by the core classes of the lib";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key ="Process";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Messages related to box processing";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Help";
    mMessageLevel[key] = 1;
    mMessageHelp[key] = "Help messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Error";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Error messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Warning";
    mMessageLevel[key] = 1;
    mMessageHelp[key] = "Warning messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Output";
    mMessageLevel[key] = 1;
    mMessageHelp[key] = "Output messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Debug";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Debug messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Config";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Configuration related messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Data";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Data related messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
    key = "Wx";
    mMessageLevel[key] = 0;
    mMessageHelp[key] = "Widgets related messages";
    if (mMaxMessageLength<key.length()) mMaxMessageLength = key.length();
  }




  MessageManager::~MessageManager() 
  {
    //      std::cout << "~MessageManager"<<std::endl;
  }
  


  MessageManager* MessageManager::GetInstance() 
  { 
    static MessageManager* m = 0;
    if (!m) m = new MessageManager();
    return m; 
  }

  void MessageManager::RegisterMessageType(std::string key, 
						  std::string help,
						  unsigned char default_level) 
  {
    GetInstance()->mMessageLevel[key] = default_level;
    GetInstance()->mMessageHelp[key] = help;
    if (GetInstance()->mMaxMessageLength<key.length()) 
      GetInstance()->mMaxMessageLength = key.length();
  }



  void MessageManager::SetMessageLevel(std::string key, 
					      unsigned char level) 
  {
    std::map<std::string,int>::iterator i;
    if (key==std::string("All")) {
      GetInstance()->mAllLevel = level;
      
      for (i=GetInstance()->mMessageLevel.begin();
	   i!=GetInstance()->mMessageLevel.end();
	   ++i) 
        (*i).second = level;
      
    }
    else {
      i = GetInstance()->mMessageLevel.find(key);
      if (i!=GetInstance()->mMessageLevel.end()) {
	(*i).second = level;
      }
      else {
	bbtkWarning("MessageManager::SetMessageLevel : message type=<"
		    <<key<<"> unregistered");
      }
    }
  }



  int MessageManager::GetMessageLevel(std::string key) 
  {
    int l = GetInstance()->mAllLevel;
    std::map<std::string,int>::iterator i = 
      GetInstance()->mMessageLevel.find(key);
    if (i!=GetInstance()->mMessageLevel.end()) {
      if ( (*i).second > l ) l = (*i).second;      
    }
    return l;
  }



  void MessageManager::PrintInfo() 
  {
    bbtkMessage("Help",1,"================ Messages =================" 
		<< bbtkendl);
    bbtkMessage("Help",1, "Category");
    for (int k=0;
	 k<(int)(GetInstance()->mMaxMessageLength-8);
	 k++) {
      bbtkMessageCont("Help",1," "); 
    }
    bbtkMessageCont("Help",1,"Level  Nature" << bbtkendl);
    std::map<std::string,int>::iterator i;
    std::map<std::string,std::string>::iterator j;  
    for (i=GetInstance()->mMessageLevel.begin(),
	   j=GetInstance()->mMessageHelp.begin();
	 i!=GetInstance()->mMessageLevel.end();++i,++j) {
      bbtkMessage("Help",1, (*i).first);
      for (int k=0;
	   k<(int)(GetInstance()->mMaxMessageLength+2-(*i).first.length());
	   k++) {
	bbtkMessageCont("Help",1," ");
      }
      bbtkMessageCont("Help",1, (*i).second << "\t" 
		      << (*j).second << bbtkendl);
    }
    bbtkMessage("Help",1,"===========================================" 
		<< bbtkendl);
  }
  

}