/**
 * 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 <memory>
#include <string>
#include <vector>
#include <locale>
#include <codecvt>

#include <sqlite3.h>

#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>

#include "Configuration.h"
#include "SqlException.h"

namespace relpipe {
namespace tr {
namespace sql {

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

class SqlHandler : public RelationalReaderStringHandler {
private:
	Configuration configuration;
	writer::RelationalWriter* relationalWriter;
	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings
	sqlite3* db;
	sqlite3_stmt* currentStatement;

public:

	SqlHandler(writer::RelationalWriter* relationalWriter, Configuration& configuration) : relationalWriter(relationalWriter), configuration(configuration) {
		int error = sqlite3_open(":memory:", &db);
		if (error) {
			sqlite3_close(db);
			throw SqlException(L"Unable to open sqlite database.");
		}
	}

	virtual ~SqlHandler() {
		sqlite3_close(db);
	}

	void startRelation(string_t name, vector<AttributeMetadata> attributes) override {

	}

	void attribute(const string_t& value) override {

	}

	void endOfPipe() {

	}

};

}
}
}