/**

 * Relational pipes

 * Copyright © 2019 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, either version 3 of the License, or

 * (at your option) any later version.

 *

 * 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 <iostream>

#include <string>

#include <sstream>

#include <vector>

#include <relpipe/writer/typedefs.h>

namespace relpipe {

namespace in {

namespace recfile {

using namespace relpipe::writer;

class RecfileCommand {

private:

	enum class RecfileLineType {

		METADATA,

		DATA

	};

	class RecfileHandler {

	private:

		RelationalWriter* writer;

	public:

		RecfileHandler(RelationalWriter* writer) : writer(writer) {

		}

		virtual ~RecfileHandler() {

		}

		void logicalLine(const string_t& name, const string_t& value, RecfileLineType type) {

			std::wcerr << L"logicalLine(" << name << L", " << value << L", " << (int) type << L");" << std::endl; // TODO: remove debug

			// TODO: writer->startRelation()

			// TODO: writer->writeAttribute()

		}

	};

	class RecfileParser {

	private:

		RecfileHandler& handler;

	public:

		RecfileParser(RecfileHandler& handler) : handler(handler) {

		}

		virtual ~RecfileParser() {

		}

		void parse(std::istream& input) {

			// TODO: parse

			handler.logicalLine(L"nnn", L"vvv", RecfileLineType::METADATA); // TODO: remove debug

			handler.logicalLine(L"nnn", L"vvv", RecfileLineType::DATA); // TODO: remove debug

		}

	};

public:

	void process(std::istream& input, std::ostream& output) {

		unique_ptr<RelationalWriter> writer(Factory::create(output));

		RecfileHandler handler(writer.get());

		RecfileParser parser(handler);

		parser.parse(input);

	}

};

}

}

}