/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2009 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"

#include "OgreArchiveManager.h"

#include "OgreArchiveFactory.h"
#include "OgreArchive.h"
#include "OgreException.h"
#include "OgreLogManager.h"

namespace Ogre {
    typedef void (*createFunc)( Archive**, const String& );

    //-----------------------------------------------------------------------
    template<> ArchiveManager* Singleton<ArchiveManager>::ms_Singleton = 0;
    ArchiveManager* ArchiveManager::getSingletonPtr(void)
    {
        return ms_Singleton;
    }
    ArchiveManager& ArchiveManager::getSingleton(void)
    {  
        assert( ms_Singleton );  return ( *ms_Singleton );  
    }
    //-----------------------------------------------------------------------
	ArchiveManager::ArchiveManager()
	{
	}
    //-----------------------------------------------------------------------
    Archive* ArchiveManager::load( const String& filename, const String& archiveType)
    {
        ArchiveMap::iterator i = mArchives.find(filename);
        Archive* pArch = 0;

        if (i == mArchives.end())
        {
            // Search factories
            ArchiveFactoryMap::iterator it = mArchFactories.find(archiveType);
            if (it == mArchFactories.end())
                // Factory not found
                OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Cannot find an archive factory "
                    "to deal with archive of type " + archiveType, "ArchiveManager::load");

            pArch = it->second->createInstance(filename);
            pArch->load();
            mArchives[filename] = pArch;

        }
        else
        {
            pArch = i->second;
        }
        return pArch;
    }
	//-----------------------------------------------------------------------
	void ArchiveManager::unload(Archive* arch)
	{
		unload(arch->getName());
	}
	//-----------------------------------------------------------------------
	void ArchiveManager::unload(const String& filename)
	{
		ArchiveMap::iterator i = mArchives.find(filename);

		if (i != mArchives.end())
		{
			i->second->unload();
			// Find factory to destroy
			ArchiveFactoryMap::iterator fit = mArchFactories.find(i->second->getType());
			if (fit == mArchFactories.end())
			{
				// Factory not found
				OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Cannot find an archive factory "
					"to deal with archive of type " + i->second->getType(), "ArchiveManager::~ArchiveManager");
			}
			fit->second->destroyInstance(i->second);
			mArchives.erase(i);
		}
	}
	//-----------------------------------------------------------------------
	ArchiveManager::ArchiveMapIterator ArchiveManager::getArchiveIterator(void)
	{
		return ArchiveMapIterator(mArchives.begin(), mArchives.end());
	}
    //-----------------------------------------------------------------------
    ArchiveManager::~ArchiveManager()
    {
        // Unload & delete resources in turn
        for( ArchiveMap::iterator it = mArchives.begin(); it != mArchives.end(); ++it )
        {
            Archive* arch = it->second;
            // Unload
            arch->unload();
            // Find factory to destroy
            ArchiveFactoryMap::iterator fit = mArchFactories.find(arch->getType());
            if (fit == mArchFactories.end())
            {
                // Factory not found
                OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Cannot find an archive factory "
                "to deal with archive of type " + arch->getType(), "ArchiveManager::~ArchiveManager");
            }
            fit->second->destroyInstance(arch);
            
        }
        // Empty the list
        mArchives.clear();
    }
    //-----------------------------------------------------------------------
    void ArchiveManager::addArchiveFactory(ArchiveFactory* factory)
    {        
        mArchFactories.insert( ArchiveFactoryMap::value_type( factory->getType(), factory ) );
        LogManager::getSingleton().logMessage("ArchiveFactory for archive type " +     factory->getType() + " registered.");
    }

}

