#include "XmlTestReporter.h"
#include "Config.h"

#include <iostream>
#include <sstream>
#include <string>

using std::string;
using std::ostringstream;
using std::ostream;

namespace {

void ReplaceChar ( string& str, char c, string const& replacement ) {
	for ( size_t pos = str.find ( c ); pos != string::npos; pos = str.find ( c, pos + 1 ) )
		str.replace ( pos, 1, replacement );
}

string XmlEscape ( string const& value ) {
	string escaped = value;

	ReplaceChar ( escaped, '&', "&amp;" );
	ReplaceChar ( escaped, '<', "&lt;" );
	ReplaceChar ( escaped, '>', "&gt;" );
	ReplaceChar ( escaped, '\'', "&apos;" );
	ReplaceChar ( escaped, '\"', "&quot;" );

	return escaped;
}

string BuildFailureMessage ( string const& file, int line, string const& message ) {
	ostringstream failureMessage;
	failureMessage << file << "(" << line << ") : " << message;
	return failureMessage.str();
}

}

namespace UnitTest {

XmlTestReporter::XmlTestReporter ( ostream& ostream )
		: m_ostream ( ostream ) {
}

void XmlTestReporter::ReportSummary ( int totalTestCount, int failedTestCount,
                                      int failureCount, float secondsElapsed ) {
	AddXmlElement ( m_ostream, NULL );

	BeginResults ( m_ostream, totalTestCount, failedTestCount, failureCount, secondsElapsed );

	DeferredTestResultList const& results = GetResults();
	for ( DeferredTestResultList::const_iterator i = results.begin(); i != results.end(); ++i ) {
		BeginTest ( m_ostream, *i );

		if ( i->failed )
			AddFailure ( m_ostream, *i );

		EndTest ( m_ostream, *i );
	}

	EndResults ( m_ostream );
}

void XmlTestReporter::AddXmlElement ( ostream& os, char const* encoding ) {
	os << "<?xml version=\"1.0\"";

	if ( encoding != NULL )
		os << " encoding=\"" << encoding << "\"";

	os << "?>";
}

void XmlTestReporter::BeginResults ( std::ostream& os, int totalTestCount, int failedTestCount,
                                     int failureCount, float secondsElapsed ) {
	os << "<unittest-results"
	<< " tests=\"" << totalTestCount << "\""
	<< " failedtests=\"" << failedTestCount << "\""
	<< " failures=\"" << failureCount << "\""
	<< " time=\"" << secondsElapsed << "\""
	<< ">";
}

void XmlTestReporter::EndResults ( std::ostream& os ) {
	os << "</unittest-results>";
}

void XmlTestReporter::BeginTest ( std::ostream& os, DeferredTestResult const& result ) {
	os << "<test"
	<< " suite=\"" << result.suiteName << "\""
	<< " name=\"" << result.testName << "\""
	<< " time=\"" << result.timeElapsed << "\"";
}

void XmlTestReporter::EndTest ( std::ostream& os, DeferredTestResult const& result ) {
	if ( result.failed )
		os << "</test>";
	else
		os << "/>";
}

void XmlTestReporter::AddFailure ( std::ostream& os, DeferredTestResult const& result ) {
	os << ">"; // close <test> element

	for ( DeferredTestResult::FailureVec::const_iterator it = result.failures.begin();
	        it != result.failures.end();
	        ++it ) {
		string const escapedMessage = XmlEscape ( it->second );
		string const message = BuildFailureMessage ( result.failureFile, it->first, escapedMessage );

		os << "<failure" << " message=\"" << message << "\"" << "/>";
	}
}

}