/**

 * Relational pipes

 * Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 3 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

#pragma once

#include <codecvt>

#include <memory>

#include <algorithm>

#include <iostream>

#include <stdexcept>

#include <Magick++.h>

#include <zbar.h>

#include "Configuration.h"

namespace relpipe {

namespace in {

namespace qr {

class QRCommand {

	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: use platform encoding as default / check zbar encoding

public:

	void process(Configuration& configuration, std::shared_ptr<writer::RelationalWriter> writer, std::function<void() > relationalWriterFlush) {

		Magick::Image magick("/dev/stdin");

		int width = magick.columns();

		int height = magick.rows();

		Magick::Blob blob;

		magick.modifyImage();

		magick.write(&blob, "GRAY", 8);

		const void *raw = blob.data();

		zbar::Image image(width, height, "Y800", raw, width * height);

		zbar::ImageScanner scanner;

		writer->startRelation(L"qr",{

			{L"type", relpipe::writer::TypeId::STRING},

			// {L"addon_name", relpipe::writer::TypeId::STRING},

			{L"value", relpipe::writer::TypeId::STRING},

			// {L"xml", relpipe::writer::TypeId::STRING},

		}, true);

		int n = scanner.scan(image);

		for (zbar::Image::SymbolIterator symbol = image.symbol_begin(); symbol != image.symbol_end(); ++symbol) {

			writer->writeAttribute(convertor.from_bytes(symbol->get_type_name()));

			// writer->writeAttribute(convertor.from_bytes(symbol->get_addon_name()));

			writer->writeAttribute(convertor.from_bytes(symbol->get_data()));

			// writer->writeAttribute(convertor.from_bytes(symbol->xml()));

			}

		}

		image.set_data(nullptr, 0);

	}

};

}

}

}