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#include "DocumentManager.h"

using namespace std;

//****************************************************************************************//
//								DocumentManager Class									  //
//****************************************************************************************//
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::definitionDoc = NULL;
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::systemCharacteristicsDoc = NULL;
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::resultDoc = NULL;
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::externalVariableDoc = NULL;
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::evaluationIdDoc = NULL;
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::directivesConfigDoc = NULL;

// ***************************************************************************************	//
//								Public members												//
// ***************************************************************************************	//
XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetDefinitionDocument() {
	return DocumentManager::definitionDoc;
}

XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetResultDocument() {
	return DocumentManager::resultDoc;
}

XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetSystemCharacteristicsDocument() {
	return DocumentManager::systemCharacteristicsDoc;
}

XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetExternalVariableDocument() {

	if(DocumentManager::externalVariableDoc == NULL) {
		string varFile = Common::GetExternalVariableFile();
		if(Common::FileExists(varFile)) {
			try {
				XmlProcessor *processor = XmlProcessor::Instance();
				DocumentManager::externalVariableDoc = processor->ParseFile(Common::GetExternalVariableFile());
			} catch (Exception ex) {
				Log::Debug("Error while parsing external variable file: " + Common::GetExternalVariableFile() + " " + ex.GetErrorMessage());
				throw ex;
			} catch (...) {
				Log::Debug("An unknown error occured while parsing external variable file: " + Common::GetExternalVariableFile());
				throw Exception("An unknown error occured while parsing external variable file: " + Common::GetExternalVariableFile());
			}
		} else {
			Log::Debug("The external variable file does not exist! The definitions being evaluated rely on external variables for proper evaluation. Values for external variables must be specified in an external variables file. " + varFile);
			throw Exception("The external variable file does not exist! The definitions being evaluated rely on external variables for proper evaluation. Values for external variables must be specified in an external variables file. " + varFile);
		}
	}

	return DocumentManager::externalVariableDoc;
}

XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetEvaluationIdDocument() {

	if(DocumentManager::evaluationIdDoc == NULL) {
		string idFile = Common::GetDefinitionIdsFile();
		if(Common::FileExists(idFile)) {
			try {
				XmlProcessor *processor = XmlProcessor::Instance();
				DocumentManager::evaluationIdDoc = processor->ParseFile(Common::GetDefinitionIdsFile());
			} catch (Exception ex) {
				Log::Debug("Error while parsing evaluation id file: " + Common::GetDefinitionIdsFile() + " " + ex.GetErrorMessage());
				throw ex;
			} catch (...) {
				Log::Debug("An unknown error occured while parsing evaluation id file: " + Common::GetDefinitionIdsFile());
				throw Exception("An unknown error occured while parsing evaluation id file: " + Common::GetDefinitionIdsFile());
			}
		} else {
			Log::Debug("The evaluation id file does not exist! " + idFile);
			throw Exception("The evaluation id file does not exist! " + idFile);
		}
	}

	return DocumentManager::evaluationIdDoc;
}

XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* DocumentManager::GetDirectivesConfigDocument() {

	if(DocumentManager::directivesConfigDoc == NULL) {
		string varFile = Common::GetDirectivesConfigFile();
		if(Common::FileExists(varFile)) {
			try {
				XmlProcessor *processor = XmlProcessor::Instance();
				DocumentManager::directivesConfigDoc = processor->ParseFile(Common::GetDirectivesConfigFile());
			} catch (Exception ex) {
				string msg = "Error while parsing directives file: " + Common::GetDirectivesConfigFile() + " " + ex.GetErrorMessage();
				cout << msg << endl;
				Log::Message(msg);
				throw ex;
			} catch (...) {
				string msg = "An unknown error occured while parsing directives file: " + Common::GetDirectivesConfigFile();
				cout << msg << endl;
				Log::Message(msg);
				throw Exception(msg);
			}
		} else {
			Log::Debug("The directives file does not exist! " + varFile);
			throw Exception("The directives file does not exist! " + varFile);
		}
	}

	return DocumentManager::directivesConfigDoc;
}

void DocumentManager::SetSystemCharacteristicsDocument(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* sc) {
	DocumentManager::systemCharacteristicsDoc = sc;
}

void DocumentManager::SetResultDocument(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* r) {
	DocumentManager::resultDoc = r;
}

void DocumentManager::SetDefinitionDocument(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* d) {
	DocumentManager::definitionDoc = d;
}

void DocumentManager::SetExternalVariableDocument(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* d) {
	DocumentManager::externalVariableDoc = d;
}

void DocumentManager::SetDirectivesConfigDocument(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* d) {
	DocumentManager::directivesConfigDoc = d;
}
