/**

 * 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 <regex>

#include <locale>

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

#include "Mode.h"

namespace relpipe {

namespace tr {

namespace infertypes {

class MetadataMode : public Mode {

private:

	static std::wregex pattern;

public:

	MetadataMode(shared_ptr<writer::RelationalWriter> relationalWriter) : Mode(relationalWriter) {

	}

	static bool willInfer(std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) {

		for (relpipe::reader::handlers::AttributeMetadata a : attributes) if (!std::regex_match(a.getAttributeName(), pattern)) return false;

		return true;

	}

	void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {

		// TODO: share this code through relpipe-lib-infertypes (when available)

	}

	void attribute(const relpipe::common::type::StringX& value) override {

		relationalWriter->writeAttribute(value);

	}

};

std::wregex MetadataMode::pattern = std::wregex(L"(.*)::(.*)");

}

}

}