/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * This library 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
 * OpenSceneGraph Public License for more details.
*/

#include <osgDB/DatabaseRevisions>
#include <osgDB/FileUtils>
#include <osgDB/FileNameUtils>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>

using namespace osgDB;

////////////////////////////////////////////////////////////////////////////////////////////
//
// FilelList
//
FileList::FileList()
{
}

FileList::FileList(const FileList& fileList, const osg::CopyOp & copyop):
    osg::Object(fileList, copyop),
    _files(fileList._files)
{
}

FileList::~FileList()
{
}

bool FileList::removeFile(const std::string& filename)
{
    FileNames::iterator itr = _files.find(filename);
    if (itr==_files.end()) return false;

    _files.erase(itr);
    return true;
}

void FileList::append(FileList* fileList)
{
    for(FileNames::iterator itr = fileList->_files.begin();
        itr != fileList->_files.end();
        ++itr)
    {
        _files.insert(*itr);
    }
}


////////////////////////////////////////////////////////////////////////////////////////////
//
// DatabaseRevision
//
DatabaseRevision::DatabaseRevision()
{
}

DatabaseRevision::DatabaseRevision(const DatabaseRevision& revision, const osg::CopyOp & copyop):
    osg::Object(revision, copyop),
    _databasePath(revision._databasePath),
    _filesAdded(revision._filesAdded),
    _filesRemoved(revision._filesRemoved),
    _filesModified(revision._filesModified)
{
}

DatabaseRevision::~DatabaseRevision()
{
}

bool DatabaseRevision::isFileBlackListed(const std::string& filename) const
{
    OSG_INFO<<"DatabaseRevision("<<getName()<<")::isFileBlackListed("<<filename<<")"<<std::endl;

    if (_databasePath.length()>=filename.length()) return false;
    if (filename.compare(0,_databasePath.length(), _databasePath)!=0) return false;

    std::string localPath(filename,
                         _databasePath.empty() ? 0 : _databasePath.length()+1,
                         std::string::npos);

    return (_filesRemoved.valid() && _filesRemoved->containsFile(localPath)) ||
           (_filesModified.valid() && _filesModified->containsFile(localPath));
}


bool DatabaseRevision::removeFile(const std::string& filename)
{
    bool removed = false;
    if (_filesAdded.valid()) removed = _filesAdded->removeFile(filename) | removed;
    if (_filesRemoved.valid()) removed = _filesRemoved->removeFile(filename) | removed;
    if (_filesModified.valid()) removed = _filesModified->removeFile(filename) | removed;
    return removed;
}

////////////////////////////////////////////////////////////////////////////////////////////
//
// DatabaseRevisions
//
DatabaseRevisions::DatabaseRevisions()
{
}

DatabaseRevisions::DatabaseRevisions(const DatabaseRevisions& revisions, const osg::CopyOp & copyop):
    osg::Object(revisions, copyop),
    _databasePath(revisions._databasePath),
    _revisionList(revisions._revisionList)
{
}

DatabaseRevisions::~DatabaseRevisions()
{
}

void DatabaseRevisions::addRevision(DatabaseRevision* revision)
{
    if (!revision) return;

    for(DatabaseRevisionList::iterator itr = _revisionList.begin();
        itr != _revisionList.end();
        ++itr)
    {
        if (*itr == revision) return;
        if ((*itr)->getName()==revision->getName())
        {
            (*itr) = revision;
            return;
        }
    }

    _revisionList.push_back(revision);
}

void DatabaseRevisions::removeRevision(DatabaseRevision* revision)
{
    for(DatabaseRevisionList::iterator itr = _revisionList.begin();
        itr != _revisionList.end();
        ++itr)
    {
        if (*itr == revision)
        {
            _revisionList.erase(itr);
            return;
        }
    }
}

bool DatabaseRevisions::isFileBlackListed(const std::string& filename) const
{
    for(DatabaseRevisionList::const_iterator itr = _revisionList.begin();
        itr != _revisionList.end();
        ++itr)
    {
        if ((*itr)->isFileBlackListed(filename))
        {
            OSG_INFO<<"File is black listed "<<filename<<std::endl;
            return true;
        }
    }
    return false;
}

bool DatabaseRevisions::removeFile(const std::string& filename)
{
    OSG_INFO<<"Remove file "<<filename<<std::endl;

    bool removed = false;
    for(DatabaseRevisionList::iterator itr = _revisionList.begin();
        itr != _revisionList.end();
        ++itr)
    {
        removed = (*itr)->removeFile(filename) | removed;
    }
    return removed;
}