/**

 * 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

 *

 * 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 <tuple>

#include <relpipe/writer/AttributeMetadata.h>

#include <relpipe/writer/typedefs.h>

namespace relpipe {

namespace tr {

namespace guile {

class DefinitionRecipe {

public:

	virtual ~DefinitionRecipe() {

	}

	relpipe::writer::string_t name;

	relpipe::writer::string_t type;

	relpipe::writer::string_t value;

};

class RelationConfiguration {

public:

	virtual ~RelationConfiguration() {

	}

	relpipe::writer::string_t relation;

	relpipe::writer::string_t guileBeforeRecords;

	relpipe::writer::string_t guileAfterRecords;

	relpipe::writer::string_t guileForEach;

	relpipe::writer::string_t guileWhere;

	relpipe::writer::string_t guileHasMoreRecords;

	/**

	 * If true, additional relation will be generated: mapping between relpipe attribute names and Guile variable names

	 */

	bool debugVariableMapping = false;

	/**

	 * If true, Guile code will be executed, but no output will be generated.

	 */

	bool drop = false;

	/**

	 * Variable definitions for this relation.

	 * Can be used as a safe way for passing parameters from the outside environment.

	 * See also Configuration::definitions (can be overridden by relation's definitions)

	 */

	std::vector<DefinitionRecipe> definitions;

	/**

	 * If empty, output relation will have same metadata as the input relation.

	 */

	std::vector<relpipe::writer::AttributeMetadata> writerMetadata;

	/**

	 * Whether original attributes should be appended to those specified using --output-attribute

	 */

	bool inputAttributesAppend = false;

	/**

	 * Whether original attributes should be prepended to those specified using --output-attribute

	 */

	bool inputAttributesPrepend = false;

};

class Configuration {

public:

	vector<RelationConfiguration> relationConfigurations;

	/**

	 * Global definitions for all relations.

	 * Can be used as a safe way for passing parameters from the outside environment.

	 * See also RelationConfiguration::definitions

	 */

	std::vector<DefinitionRecipe> definitions;

	// TODO: --create t2 3 a integer b boolean '…guile…' – allow creating new relations? Or allow calling startRelation() and attribute() from Guile?

	// TODO: --has-more-relations '…guile…' – called after all relations … ?

	// TODO: --dynamic-output-attributes '…guile…' – used instead or together with --output-attribute

	virtual ~Configuration() {

	}

};

}

}

}