/**

 * 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/>.

 */

#include <cstdlib>

#include <vector>

#include <sstream>

#include <memory>

#include <relpipe/writer/RelationalWriter.h>

#include <relpipe/writer/RelpipeWriterException.h>

#include <relpipe/writer/AttributeMetadata.h>

#include <relpipe/common/type/typedefs.h>

#include <relpipe/cli/CLI.h>

#include "lib/ASN1ContentHandler.h"

#include "lib/BasicASN1Reader.h"

#include "lib/TransactionalBuffer.h"

#include "ASN1Command.h"

#include "RelpipeASN1ContentHandler.h"

#include "FreeformASN1ContentHandler.h"

using namespace std;

using namespace relpipe::writer;

using namespace relpipe::in::asn1::lib;

namespace relpipe {

namespace in {

namespace asn1 {

void ASN1Command::process(std::istream& input, std::shared_ptr<writer::RelationalWriter> writer, Configuration& configuration) {

	// TODO: parse ASN.1 and write relational data

	BasicASN1Reader reader;

	std::shared_ptr<ASN1ContentHandler> asn1handler;

	if (configuration.mode == Mode::Relpipe) asn1handler = std::make_shared<RelpipeASN1ContentHandler>(writer, configuration);

	else if (configuration.mode == Mode::Freeform) asn1handler = std::make_shared<FreeformASN1ContentHandler>(writer, configuration);

	else throw RelpipeWriterException(L"Unsupported mode in ASN1Command: " + std::to_wstring((int) configuration.mode));

	for (ParserOptionRecipe o : configuration.parserOptions) {

		int n = 0;

		n += reader.setOption(convertor.to_bytes(o.uri), convertor.to_bytes(o.value));

		n += asn1handler->setOption(convertor.to_bytes(o.uri), convertor.to_bytes(o.value));

		if (n == 0) throw RelpipeWriterException(L"Invalid parser option: „" + o.uri + L"“ with value: „" + o.value + L"“");

	}

	reader.addHandler(asn1handler);

	try {

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

		for (uint8_t b = input.get(); input.good(); b = input.get()) reader.write(&b, 1);

	} 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();

}

}

}

}