#include <string.h>
#include <stdlib.h>
#include <time.h>

#include "Kml.hpp"


Kml::Kml(const char *pDocRoot)
: kml(nullptr)
, m_pPlanePlaceMark(nullptr)
, m_pPathPlaceMark(nullptr)
, m_docRoot(pDocRoot)
, m_altitudeModeString("absolute")
, m_pathColorString("0xff00ffff")
{
	memset(m_path, 0, sizeof(m_path));
}


Kml::~Kml(void)
{
	kml = nullptr;
}

const char* Kml::getPath()
{
	return m_path;
}

void Kml::create()
{
	time_t time_departure;
	struct tm *time_now;

	if (kml)
		destroy();

	kml = new XmlElement("kml");
	XmlElement *pDoc = kml->createNewChildElement("Document");
	XmlElement *pFile = kml->getChildByName("Document")->createNewChildElement("filename");
	XmlElement *pSnippet = kml->getChildByName("Document")->createNewChildElement("Snippet");

	time(&time_departure);
	time_now = localtime(&time_departure);
	char time_str[256];

	// Create an outer XML element..
	kml->setAttribute("xmlns", "http://www.opengis.net/kml/2.2");
	sprintf(m_path, "%s\\flight_%4.4d%2.2d%2.2d_%2.2d%2.2d%2.2d.kml", m_docRoot, 1900+time_now->tm_year, time_now->tm_mon+1, time_now->tm_mday, time_now->tm_hour, time_now->tm_min, time_now->tm_sec);
	pFile->addTextElement(m_path);
	pSnippet->setAttribute("maxLines", "2");

	sprintf(time_str, "Created on %4.4d-%2.2d-%2.2d at %2.2d:%2.2d:%2.2d", 1900+time_now->tm_year, time_now->tm_mon+1, time_now->tm_mday, time_now->tm_hour, time_now->tm_min, time_now->tm_sec);
	pSnippet->addTextElement(time_str);
	
}

void Kml::destroy()
{
	kml = nullptr;
	m_pPlanePlaceMark = nullptr;
	m_pPathPlaceMark = nullptr;
}

void Kml::setAltitudeMode(String const &modeString)
{
	m_altitudeModeString = modeString;

	if (m_pPlanePlaceMark)
	{
		m_pPlanePlaceMark->getChildByName("Point")->getChildByName("altitudeMode")->getFirstChildElement()->setText(modeString);
	}

	if (m_pPathPlaceMark)
	{
		m_pPathPlaceMark->getChildByName("LineString")->getChildByName("altitudeMode")->getFirstChildElement()->setText(modeString);
	}

}

void Kml::setPathColor(String const &colorString)
{
	const ScopedLock sl (m_lock);

	m_pathColorString = colorString;

	if (m_pPathPlaceMark)
	{
		m_pPathPlaceMark->getChildByName("Style")->getChildByName("LineStyle")->getChildByName("color")->getFirstChildElement()->setText(colorString);
	}

}

void Kml::update(FlightData const &flightData)
{
	const ScopedLock sl (m_lock);
	updatePlane(flightData);
	updatePath(flightData);
}

void Kml::updatePlane(FlightData const &flightData)
{
	char temp_str[1024];

	XmlElement *pDoc = kml->getChildByName("Document");

	XmlElement *pPlacemark = m_pPlanePlaceMark;
	XmlElement *pName;
	XmlElement *pStyle;
	XmlElement *pIconStyle;
	XmlElement *pIcon;

	XmlElement *pHref;
	XmlElement *pHeading;
	XmlElement *pY, *pW, *pH;
	XmlElement *pDescr;
	XmlElement *pPoint;
	XmlElement *pExtrude;
	XmlElement *pTesselate;
	XmlElement *pAltitudeMode;
	XmlElement *pCoords;

	if(pPlacemark == NULL)
	{
		// Placemark
		pPlacemark = pDoc->createNewChildElement("Placemark");

		// Name
		sprintf(temp_str, "Unknown flight");
		if (strlen(flightData.atcFlightIDStr))
		{
			if (strlen(flightData.atcFlightNumStr) == 0)
			{
				sprintf(temp_str, "%s", flightData.atcFlightIDStr);
			}
			else
			{
				sprintf(temp_str, "%s/%s", flightData.atcFlightIDStr, flightData.atcFlightNumStr);
			}
		}
		pName = pPlacemark->createNewChildElement("name");
		pName->addTextElement(temp_str);
		printf("%s\n", temp_str);

		// Description
		pDescr = pPlacemark->createNewChildElement("description");
		sprintf(temp_str, "%s\nAltitude: %d ft, Speed: %d kts", flightData.atcFlightIDStr, (int)(flightData.alt_feet+0.5), (int)(flightData.gs_knots+0.5));
		pDescr->addTextElement(temp_str);

		// Style
		pStyle = pPlacemark->createNewChildElement("Style");
		
		// IconStyle
		pIconStyle = pStyle->createNewChildElement("IconStyle");
		pHeading = pIconStyle->createNewChildElement("heading");
		sprintf(temp_str, "%d", (int)flightData.hdgTrue_deg);
		pHeading->addTextElement(temp_str);

		// Icon
		pIcon = pIconStyle->createNewChildElement("Icon");
		pHref = pIcon->createNewChildElement("href");
		pHref->addTextElement("root://icons/palette-2.png");
		pY = pIcon->createNewChildElement("y");
		pY->addTextElement("0");
		pW = pIcon->createNewChildElement("w");
		pW->addTextElement("32");
		pH = pIcon->createNewChildElement("h");
		pH->addTextElement("32");

		// Point
		pPoint = pPlacemark->createNewChildElement("Point");
		pExtrude = pPoint->createNewChildElement("extrude");
		pExtrude->addTextElement("1");
		pTesselate = pPoint->createNewChildElement("tesselate");
		pTesselate->addTextElement("1");
		pAltitudeMode = pPoint->createNewChildElement("altitudeMode");
		pAltitudeMode->addTextElement(m_altitudeModeString);
		pCoords = pPoint->createNewChildElement("coordinates");
		sprintf(temp_str, "%9.6f,%9.6f,%9.6f", flightData.lon,  flightData.lat,  flightData.alt_meter);
		pCoords->addTextElement(temp_str);

		m_pPlanePlaceMark = pPlacemark;
	}
	else
	{
		// Description
		sprintf(temp_str, "%s\nAltitude: %d ft, Speed: %d kts", flightData.atcFlightIDStr, (int)(flightData.alt_feet+0.5), (int)(flightData.gs_knots+0.5));
		pDescr = pPlacemark->getChildByName("description");
		pDescr->getFirstChildElement()->setText(temp_str);

		// Heading
		sprintf(temp_str, "%d", (int)flightData.hdgTrue_deg);
		pHeading = pPlacemark->getChildByName("Style")->getChildByName("IconStyle")->getChildByName("heading");
		pHeading->getFirstChildElement()->setText(temp_str);

		// Coordinates
		sprintf(temp_str, "%9.6f,%9.6f,%9.6f", flightData.lon,  flightData.lat,  flightData.alt_meter);
		pCoords = pPlacemark->getChildByName("Point")->getChildByName("coordinates");
		pCoords->getFirstChildElement()->setText(temp_str);
	}

}

void Kml::updatePath(FlightData const &flightData)
{
	char temp_str[1024];

	XmlElement *pDoc = kml->getChildByName("Document");

	XmlElement *pPlacemark = m_pPathPlaceMark;
	XmlElement *pName;
	XmlElement *pStyle;
	XmlElement *pLineStyle;
	XmlElement *pLineColor;
	XmlElement *pLineWidth;
	XmlElement *pPolyStyle;
	XmlElement *pPolyColor;

	XmlElement *pLineString;
	XmlElement *pExtrude;
	XmlElement *pTesselate;
	XmlElement *pAltitudeMode;
	XmlElement *pCoords;

	if(pPlacemark == NULL)
	{
		// Placemark
		pPlacemark = pDoc->createNewChildElement("Placemark");

		// Name
		pName = pPlacemark->createNewChildElement("name");
		pName->addTextElement("Track");

		// Style
		pStyle = pPlacemark->createNewChildElement("Style");
		
		// LineStyle
		pLineStyle = pStyle->createNewChildElement("LineStyle");
		pLineColor = pLineStyle->createNewChildElement("color");
		pLineColor->addTextElement(m_pathColorString);

		pLineWidth = pLineStyle->createNewChildElement("width");
		pLineWidth->addTextElement("4");

		// PolyStyle
		pPolyStyle = pStyle->createNewChildElement("PolyStyle");
		pPolyColor = pPolyStyle->createNewChildElement("color");
		sprintf(temp_str, "%4.4X", 0x7f00ff00);
		pPolyColor->addTextElement(temp_str);

		// LineString
		pLineString = pPlacemark->createNewChildElement("LineString");
		pExtrude = pLineString->createNewChildElement("extrude");
		pExtrude->addTextElement("1");
		pTesselate = pLineString->createNewChildElement("tesselate");
		pTesselate->addTextElement("1");
		pAltitudeMode = pLineString->createNewChildElement("altitudeMode");
		pAltitudeMode->addTextElement(m_altitudeModeString);
		pCoords = pLineString->createNewChildElement("coordinates");
		sprintf(temp_str, "%9.6f,%9.6f,%9.6f", flightData.lon,  flightData.lat,  flightData.alt_meter);
		pCoords->addTextElement(temp_str);

		m_pPathPlaceMark = pPlacemark;
	}
	else
	{
		// Coordinates
		sprintf(temp_str, "\n%9.6f,%9.6f,%9.6f", flightData.lon,  flightData.lat,  flightData.alt_meter);
		pCoords = pPlacemark->getChildByName("LineString")->getChildByName("coordinates");
		pCoords->addTextElement(temp_str);
	}
}

void Kml::exportKml(const char *pPath)
{
	const ScopedLock sl (m_lock);

	if (pPath && kml)
	{
		File file(pPath);
		kml->writeToFile(file, StringRef(""));
	}
}

void Kml::exportKmz(const char *pPath)
{
	// ToDo: add Compression if available in Juce
	const ScopedLock sl (m_lock);

	if (pPath && kml)
	{
		File file(pPath);

		file.deleteFile();
		ScopedPointer<OutputStream> pStream = file.createOutputStream();

		kml->writeToStream(*pStream, StringRef(""));
		pStream = nullptr;
	}
}

void Kml::onUpdate(const char *pPath)
{
	exportKmz(pPath);
}