#include "BaseEntity.h"
#include "ObjectManager.h"
#include "CStr.h"

// xerces XML stuff
#include <xercesc/dom/DOM.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/framework/LocalFileInputSource.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/util/PlatformUtils.hpp>

// Gee's custom error handler
#include <ps/XercesErrorHandler.h>

// automatically use namespace ..
XERCES_CPP_NAMESPACE_USE

bool CBaseEntity::loadXML( CStr filename )
{
	// I can only assume Rich knows what this does ;)

	bool parseOK = false;

	// Initialize XML library
	XMLPlatformUtils::Initialize();
	{
		// Create parser instance
		XercesDOMParser *parser = new XercesDOMParser();

		// Setup parser
		parser->setValidationScheme(XercesDOMParser::Val_Auto);
		parser->setDoNamespaces(false);
		parser->setDoSchema(false);
		parser->setCreateEntityReferenceNodes(false);

		// Set customized error handler
		CXercesErrorHandler *errorHandler = new CXercesErrorHandler();
		parser->setErrorHandler(errorHandler);

		// Get main node
		LocalFileInputSource source( XMLString::transcode(filename) );

		// Parse file
		parser->parse(source);

		// Check how many errors
		parseOK = parser->getErrorCount() == 0;

		if (parseOK) {
			// parsed successfully - grab our data
			DOMDocument *doc = parser->getDocument(); 
			DOMElement *element = doc->getDocumentElement(); 

			// root_name should be Object
			CStr root_name = XMLString::transcode( element->getNodeName() );

			// should have at least 3 children - Name, ModelName and TextureName
			DOMNodeList *children = element->getChildNodes();
			int numChildren=children->getLength();
			for (int i=0; i<numChildren; ++i) {
				// Get node
				DOMNode *child = children->item(i);

				// A child element
				if (child->getNodeType() == DOMNode::ELEMENT_NODE)
				{
					// First get element and not node
					DOMElement *child_element = (DOMElement*)child;

					CStr element_name = XMLString::transcode( child_element->getNodeName() );
					DOMNode *value_node= child_element->getChildNodes()->item(0);
					CStr element_value=value_node ? XMLString::transcode(value_node->getNodeValue()) : "";

					if (element_name==CStr("Name")) {
						m_name = element_value;
					} else if (element_name==CStr("Actor")) {
						m_actorObject = g_ObjMan.FindObject( element_value );
					} else if (element_name==CStr("Speed")) {
						m_speed = element_value.ToFloat();
					}
				}
			}

		}

		delete parser;
	}
	XMLPlatformUtils::Terminate();

	return parseOK;
}