/**

 * 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 <memory>

#include <libxml++-2.6/libxml++/libxml++.h>

#include "lib/BasicASN1Reader.h"

#include "lib/GenericASN1ContentHandler.h"

#include "lib/DOMBuildingXMLContentHandler.h"

#include "lib/TransactionalBuffer.h"

namespace relpipe {

namespace in {

namespace xmltable {

class XMLDocumentConstructor {

private:

	std::istream* input = nullptr;

	xmlpp::DomParser* parser = nullptr;

public:

	XMLDocumentConstructor(std::istream* input, xmlpp::DomParser* parser) : input(input), parser(parser) {

	}

	void setOption(const std::string& uri, const std::string& value) {

	}

	void process() {

		relpipe::in::asn1::lib::BasicASN1Reader reader;

		std::shared_ptr<relpipe::in::asn1::lib::GenericASN1ContentHandler> asn1handler = make_shared<relpipe::in::asn1::lib::GenericASN1ContentHandler>();

		std::shared_ptr<relpipe::in::asn1::lib::DOMBuildingXMLContentHandler> saxHandler = make_shared<relpipe::in::asn1::lib::DOMBuildingXMLContentHandler>(parser->get_document());

		asn1handler->addHandler(saxHandler);

		reader.addHandler(asn1handler);

		try {

			// TODO: buffering? (reader itself also buffers)

		} catch (const relpipe::in::asn1::lib::TransactionalBuffer::WriteBufferOverflowException& e) {

			// TODO: avoid leaky abstraction and use different exception

			throw relpipe::writer::RelpipeWriterException(L"Transactional buffer for ASN.1 input is too small");

		}

		reader.close();

		if (parser->get_document()->get_root_node() == nullptr) throw relpipe::writer::RelpipeWriterException(L"Empty ASN.1 input"); // TODO: move to common class

	}

};

}

}

}