/**

 * Relational pipes

 * Copyright © 2020 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.

 *

 * 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 <vector>

#include <map>

#include <codecvt>

#include <locale>

#include <relpipe/reader/typedefs.h>

#include "SqlException.h"

#include "Connection.h"

namespace relpipe {

namespace tr {

namespace sql {

/**

 * Common principles in this SQL layer:

 *  - Numbering starts with 1, not 0. First parameter or column = 1.

 *  - If you got a pointer returned from a method or function, you are then responsible for given object.

 *    Wrapping it immediatelly in a smart pointer is a convenient way to manage its lifecycle.

 *    Statements should be destroyed before the Connection. And Connection should be destroyed before DriverManager.

 */

class DriverManager {

private:

	void* environment;

	std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings

public:

	class DataSource {

	public:

		relpipe::reader::string_t name;

		relpipe::reader::string_t description;

	};

	DriverManager();

	virtual ~DriverManager();

	std::vector<DataSource> getDataSources();

	Connection* getConnectionByDSN(relpipe::reader::string_t dataSourceName, relpipe::reader::string_t userName = L"", relpipe::reader::string_t password = L"");

	Connection* getConnectionByString(relpipe::reader::string_t connectionString);

};

}

}

}