/**

 * 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>

namespace relpipe {

namespace in {

namespace asn1 {

namespace lib {

class ASN1ContentHandler {

public:

	enum class CollectionType : uint64_t {

		Constructed, // TODO: special event?

		Sequence = 16,

		Set = 17

	};

	enum class StringType : uint64_t {

		OctetString,

		UTF8String,

		NumericString,

		PrintableString,

		T61String,

		VideotexString,

		IA5String,

		GraphicString,

		VisibleString,

		GeneralString,

		UniversalString,

		CharacterString,

		BMPString,

	};

	virtual ~ASN1ContentHandler() = default;

	virtual void writeStreamStart() = 0;

	virtual void writeStreamEnd() = 0;

	virtual void writeCollectionStart(CollectionType type) = 0;

	virtual void writeCollectionEnd() = 0;

	virtual void writeBoolean(bool value) = 0;

	virtual void writeNull() = 0;

	virtual void writeInteger(int64_t value) = 0;

	virtual void writeString(StringType type, std::string value) = 0;

	// virtual void writeOID(std::string value) = 0;

	// Object descriptor

	// virtual void writeReal(float value) = 0;

	// Enumerated

	// Embedded PVD

	// Relative OID

	// TIME

	// UTC time

	// Generalized time

	// Date

	// Time of day

	// Date-time

	// Duration

	// OID-IRI

	// Relative OID-IRI

};

class ASN1ContentHandlerProxy : public ASN1ContentHandler {

private:

	std::vector<std::shared_ptr<ASN1ContentHandler>> handlers;

public:

	void addHandler(std::shared_ptr<ASN1ContentHandler> handler) {

		handlers.push_back(handler);

	}

#define handler for (auto ___h : handlers) ___h

	void writeStreamStart() override {

		handler->writeStreamStart();

	}

	void writeStreamEnd() override {

		handler->writeStreamEnd();

	}

	void writeCollectionStart(CollectionType type) override {

		handler->writeCollectionStart(type);

	}

	void writeCollectionEnd() override {

		handler->writeCollectionEnd();

	}

	void writeBoolean(bool value) override {

		handler->writeBoolean(value);

	}

	void writeNull() override {

		handler->writeNull();

	}

		handler->writeInteger(value);

	}

	void writeString(StringType type, std::string value) override {

		handler->writeString(type, value);

	}

#undef handler

};

}

}

}

}