/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#include <cassert>

#include <QByteArray>
#include <QDataStream>
#include <QDomDocument>
#include <QFile>
#include <QFileInfo>
#include <QScopedPointer>

#include "paletteloader_swatchbook.h"
#include "sccolor.h"
#include "scribusdoc.h"
#include "sctextstream.h"
#include "third_party/zip/scribus_zip.h"
#include "util.h"
#include "util_formats.h"

PaletteLoader_Swatchbook::PaletteLoader_Swatchbook()
                 : PaletteLoader()
{

}

bool PaletteLoader_Swatchbook::isFileSupported(const QString & fileName) const
{
	QFileInfo fi = QFileInfo(fileName);
	QString ext = fi.suffix().toLower();
	if (ext != "sbz")
		return false;
	
	return true;
}

bool PaletteLoader_Swatchbook::importFile(const QString& fileName, bool /*merge*/)
{
	ScColor lf;
	int oldCount = m_colors->count();
	
	QScopedPointer<ScZipHandler> uz(new ScZipHandler());
	if (!uz->open(fileName))
		return false;
	if (!uz->contains("swatchbook.xml"))
		return false;
	
	QByteArray docBytes;
	if (!uz->read("swatchbook.xml", docBytes))
		return false;

	QString docText = QString::fromUtf8(docBytes);
	QDomDocument docu("scridoc");
	if (!docu.setContent(docText))
		return false;
	
	QDomElement docElem = docu.documentElement();
	for (QDomElement drawPag = docElem.firstChildElement(); !drawPag.isNull(); drawPag = drawPag.nextSiblingElement())
	{
		if (drawPag.tagName() == "materials")
		{
			for (QDomElement spf = drawPag.firstChildElement(); !spf.isNull(); spf = spf.nextSiblingElement() )
			{
				if (spf.tagName() == "color")
				{
					bool isSpot = spf.attribute("usage") == "spot";
					QString colorName = "";
					ScColor tmp;
					tmp.setRegistrationColor(false);
					for (QDomElement spp = spf.firstChildElement(); !spp.isNull(); spp = spp.nextSiblingElement() )
					{
						if (spp.tagName() == "metadata")
						{
							for (QDomElement spm = spp.firstChildElement(); !spm.isNull(); spm = spm.nextSiblingElement() )
							{
								if (spm.tagName() == "dc:identifier")
									colorName = spm.text();
							}
						}
						else if (spp.tagName() == "values")
						{
							QString colorVals = spp.text();
							ScTextStream CoE(&colorVals, QIODevice::ReadOnly);
							if (spp.attribute("model") == "Lab")
							{
								double inC[3];
								CoE >> inC[0];
								CoE >> inC[1];
								CoE >> inC[2];
								tmp.setLabColor(inC[0], inC[1], inC[2]);
								tmp.setSpotColor(isSpot);
							}
							else if (spp.attribute("model") == "CMYK")
							{
								double c, m, y, k;
								CoE >> c >> m >> y >> k;
								tmp.setColorF(c, m, y, k);
								tmp.setSpotColor(isSpot);
							}
							else if (spp.attribute("model") == "RGB")
							{
								double r, g, b;
								CoE >> r >> g >> b;
								tmp.setRgbColorF(r, g, b);
								tmp.setSpotColor(false);
							}
						}
					}
					if (!colorName.isEmpty())
						m_colors->tryAddColor(colorName, tmp);
				}
			}
		}
	}
	
	return (m_colors->count() != oldCount);
}
