// -*- mode: c++; c-basic-offset:4 -*-

// This file is part of libdap, A C++ implementation of the OPeNDAP Data

// Access Protocol.

// Copyright (c) 2017 OPeNDAP, Inc.

// Author: Nathan Potter <ndp@opendap.org>

//

// This library is free software; you can redistribute it and/or

// modify it under the terms of the GNU Lesser General Public

// License as published by the Free Software Foundation; either

// version 2.1 of the License, or (at your option) any later version.

//

// This library 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

// Lesser General Public License for more details.

//

// You should have received a copy of the GNU Lesser General Public

// License along with this library; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//

// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.

#ifndef DAPXMLNAMSPACES_H_

#define DAPXMLNAMSPACES_H_

#include <string>

namespace libdap {

enum DAPVersion { DAP_2_0, DAP_3_2, DAP_4_0 };

class DapXmlNamspaces {

public:

	virtual ~DapXmlNamspaces() {};

	/**

	 * Returns the XML Schema-instance namespace string.

	 */

	static std::string getXmlXsiNamespace(){

		return "http://www.w3.org/2001/XMLSchema-instance";

	}

	/**

	 * Returns the XML  namespace string.

	 */

	static std::string getXmlNamespace(){

		return "http://www.w3.org/XML/1998/namespace";

	}

	/**

	 * Returns the GRDDL transformation URL for the passed DAP version.

	 */

	static std::string getGrddlTransformation(DAPVersion version){

		switch(version) {

		case DAP_2_0:

			throw InternalErr(__FILE__, __LINE__, "DapXmlNamspaces::getDapXmlNamespaceString() - GRDDL Transformation undefined for DAP 2.0");

			break;

		case DAP_3_2:

			return "http://xml.opendap.org/transforms/ddxToRdfTriples.xsl";

			break;

		case DAP_4_0:

			throw InternalErr(__FILE__, __LINE__, "DapXmlNamspaces::getDapXmlNamespaceString() - GRDDL Transformation undefined for DAP 4.0");

			break;

		default:

			throw InternalErr(__FILE__, __LINE__, "DapXmlNamspaces::getDapXmlNamespaceString() - Unrecognized namespace version.");

			break;

		}

	}

	/**

	 * Returns the DAP XML namespace string for the passed DAP version.

	 */

	static std::string getDapNamespaceString(DAPVersion version){

		switch(version) {

		case DAP_2_0:

			return "http://xml.opendap.org/ns/DAP2";

			break;

		case DAP_3_2:

			return "http://xml.opendap.org/ns/DAP/3.2#";

			break;

		case DAP_4_0:

			return "http://xml.opendap.org/ns/DAP/4.0#";

			break;

		default:

			throw InternalErr(__FILE__, __LINE__, "DapXmlNamspaces::getDapXmlNamespaceString() - Unrecognized namespace version.");

			break;

		}

	}

	/**

	 * Returns the schema location URI string for the passed DAP version.

	 */

	static std::string getSchemaLocationString(DAPVersion version){

		switch(version) {

		case DAP_2_0:

			return "http://xml.opendap.org/dap/dap2.xsd";

			break;

		case DAP_3_2:

			return "http://xml.opendap.org/dap/dap3.2.xsd";

			break;

		case DAP_4_0:

			return "http://xml.opendap.org/dap/dap4.0.xsd";

			break;

		default:

			throw InternalErr(__FILE__, __LINE__, "DapXmlNamspaces::getSchemaLocationString() - Unrecognized namespace version.");

			break;

		}

	}

	/**

	 * Returns the schema location declaration (the namespace string followed by a

	 * space followed by the schema location string) for the passed DAP version.

	 */

	static std::string getSchemaLocationDeclarationString(DAPVersion version){

		return getDapNamespaceString(version).append(" ").append(getSchemaLocationString(version));

	}

};

} /* namespace libdap */

#endif /* DAPXMLNAMSPACES_H_ */