/*
   Copyright (C) 2006, Stefan Greven.
   All Rights Reserved.

   This file is part of GtkRadiant.

   GtkRadiant 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 2 of the License, or
   (at your option) any later version.

   GtkRadiant 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 GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if !defined( INCLUDED_XMLTEXTAGS_H )
#define INCLUDED_XMLTEXTAGS_H

#include <set>
#include <string/string.h>
#include <vector>

#include "iscriplib.h"

#include <libxml/xpath.h>
#include <libxml/xmlwriter.h>

enum NodeTagType
{
	TAG,
	EMPTY
};

enum NodeShaderType
{
	SHADER,
	TEXTURE
};

enum TextureType
{
	STOCK,
	CUSTOM
};

class XmlTagBuilder
{
private:
CopiedString m_savefilename;
xmlDocPtr doc;
xmlXPathContextPtr context;
xmlNodeSetPtr nodePtr;

xmlXPathObjectPtr XpathEval( const char* queryString ){
	xmlChar* expression = (xmlChar*)queryString;
	xmlXPathObjectPtr result = xmlXPathEvalExpression( expression, context );
	return result;
};

char* GetTagsXpathExpression( char* buffer, const char* shader, NodeTagType nodeTagType ){
	strcpy( buffer, "/root/*/*[@path='" );
	strcat( buffer, shader );

	switch ( nodeTagType )
	{
	case TAG:
		strcat( buffer, "']/tag" );
		break;
	case EMPTY:
		strcat( buffer, "']" );
	};

	return buffer;
}

public:
XmlTagBuilder();
~XmlTagBuilder();

bool CreateXmlDocument();
bool OpenXmlDoc( const char* file, const char* savefile = 0 );
bool SaveXmlDoc( const char* file );
bool SaveXmlDoc( void );
bool AddShaderNode( const char* shader, TextureType textureType, NodeShaderType nodeShaderType );
bool DeleteShaderNode( const char* shader );
bool CheckShaderTag( const char* shader );
bool CheckShaderTag( const char* shader, const char* content );
bool AddShaderTag( const char* shader, const char* content, NodeTagType nodeTagType );
bool DeleteTag( const char* tag );
int RenameShaderTag( const char* oldtag, CopiedString newtag );
bool DeleteShaderTag( const char* shader, const char* tag );
void GetShaderTags( const char* shader, std::vector<CopiedString>& tags );
void GetUntagged( std::set<CopiedString>& shaders );
void GetAllTags( std::set<CopiedString>& tags );
void TagSearch( const char* expression, std::set<CopiedString>& paths );
};

#endif