<?php

/**
 * @file tools/parseCitations.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2003-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class CitationsParsingTool
 * @ingroup tools
 *
 * @brief CLI tool to parse existing citations
 */

require(dirname(dirname(dirname(dirname(__FILE__)))) . '/tools/bootstrap.inc.php');

class CitationsParsingTool extends CommandLineTool {

	/**
	 * Constructor.
	 * @param $argv array command-line arguments
	 */
	function __construct($argv = array()) {
		parent::__construct($argv);

		if (!sizeof($this->argv)) {
			$this->usage();
			exit(1);
		}

		$this->parameters = $this->argv;
	}

	/**
	 * Print command usage information.
	 */
	function usage() {
		echo "Parse and save submission(s) citations.\n"
			. "Usage:\n"
			. "{$this->scriptName} all\n"
			. "{$this->scriptName} context context_id [...]\n"
			. "{$this->scriptName} submission submission_id [...]\n";
	}

	/**
	 * Parse citations
	 */
	function execute() {
		$submissionDao = DAORegistry::getDAO('SubmissionDAO'); /* @var $submissionDao SubmissionDAO */
		$citationDao = DAORegistry::getDAO('CitationDAO');
		$contextDao = Application::getContextDAO();

		switch(array_shift($this->parameters)) {
			case 'all':
				$contexts = $contextDao->getAll();
				while ($context = $contexts->next()) {
					$submissions = $submissionDao->getByContextId($context->getId());
					while ($submission = $submissions->next()) {
						$this->_parseSubmission($submission);
					}
				}
				break;
			case 'context':
				foreach($this->parameters as $contextId) {
					$context = $contextDao->getById($contextId);
					if(!isset($context)) {
						printf("Error: Skipping $contextId. Unknown context.\n");
						continue;
					}
					$submissions = $submissionDao->getByContextId($contextId);
					while ($submission = $submissions->next()) {
						$this->_parseSubmission($submission);
					}
				}
				break;
			case 'submission':
				foreach($this->parameters as $submissionId) {
					$submission = $submissionDao->getById($submissionId);
					if(!isset($submission)) {
						printf("Error: Skipping $submissionId. Unknown submission.\n");
						continue;
					}
					$this->_parseSubmission($submission);
				}
				break;
			default:
				$this->usage();
				break;
		}
	}

	/**
	 * Parse the citations of one submission
	 * @param Submission $submission
	 */
	private function _parseSubmission($submission) {
		foreach ((array) $submission->getData('publications') as $publication) {
			if (!empty($publication->getData('citationsRaw'))) {
				DAORegistry::getDAO('CitationDAO')->importCitations($publication->getId(), $publication->getData('citationsRaw'));
			}
		}
	}
}

$tool = new CitationsParsingTool(isset($argv) ? $argv : array());
$tool->execute();