/**
 * Relational pipes
 * Copyright © 2018 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 <memory>
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
#include <regex>

#include <relpipe/reader/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
#include <relpipe/reader/handlers/AttributeMetadata.h>

#include <relpipe/writer/Factory.h>

namespace relpipe {
namespace tr {
namespace validator {

using namespace relpipe;
using namespace relpipe::reader;
using namespace relpipe::reader::handlers;

// TODO: use rather RelationalReaderStringHadler
class PassthroughHandler : public RelationalReaderStringHadler {
private:
	writer::RelationalWriter* relationalWriter;
public:

	PassthroughHandler(std::ostream& output) : relationalWriter(writer::Factory::create(output)) {
	}

	virtual ~PassthroughHandler() {
		delete relationalWriter;
	}

	void startRelation(string_t name, std::vector<AttributeMetadata> attributes) override {
		// TODO: move to a reusable method (or use same metadata on both reader and writer side?)
		std::vector<writer::AttributeMetadata> writerMetadata;
		for (AttributeMetadata readerMetadata : attributes) {
			writerMetadata.push_back({readerMetadata.getAttributeName(), relationalWriter->toTypeId(readerMetadata.getTypeName())});
		}
		
		relationalWriter->startRelation(name, writerMetadata, true);
	}

	void attribute(const string_t& value) override {
		relationalWriter->writeAttribute(value);
	}

	void endOfPipe() {

	}

};

}
}
}