/**

 * 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 <vector>

#include "ASN1Reader.h"

namespace relpipe {

namespace in {

namespace asn1 {

namespace lib {

/**

 * Reads ASN.1 data encoded as BER (DER, CER).

 */

class BasicASN1Reader : public ASN1Reader {

private:

	enum class State {

		A,

		B,

		C

	};

	State state = State::A;

	bool started = false;

	void readNext() {

		commit();

		if (!started) {

			handlers.writeStreamStart();

			started = true;

		}

		handlers.writeCollectionStart(ASN1ContentHandler::CollectionType::Sequence);

		handlers.writeNull();

		handlers.writeBoolean(true);

		handlers.writeString(ASN1ContentHandler::StringType::UTF8String, "relational pipes");

		handlers.writeCollectionEnd();

		if (state == State::A) {

		} else if (state == State::B) {

		} else if (state == State::C) {

		}

	}

protected:

	void update() override {

		while (true) readNext();

	}

public:

	void close() override {

		if (started) handlers.writeStreamEnd();

	}

};

}

}

}

}