<?php

/**
 * @file EruditExportDom.inc.php
 *
 * Copyright (c) 2003-2012 John Willinsky
 * Distributed under the GNU GPL v2. For full terms see the file docs/COPYING.
 *
 * @class EruditExportDom
 * @ingroup plugins_importexport_erudit
 *
 * @brief Erudit plugin DOM functions for export
 */

// $Id$


import('lib.pkp.classes.xml.XMLCustomWriter');

class EruditExportDom {
	function &generateArticleDom(&$doc, &$journal, &$issue, &$article, &$galley) {
		$unavailableString = __('plugins.importexport.erudit.unavailable');

		$root =& XMLCustomWriter::createElement($doc, 'article');
		XMLCustomWriter::setAttribute($root, 'idprop', $journal->getId() . '-' . $issue->getId() . '-' . $article->getId() . '-' . $galley->getId(), false);
		XMLCustomWriter::setAttribute($root, 'arttype', 'article');

		$lang = $article->getLanguage();
		XMLCustomWriter::setAttribute($root, 'lang', isset($lang)?$lang:'en');
		XMLCustomWriter::setAttribute($root, 'processing', 'cart');

		/* --- admin --- */

		$adminNode =& XMLCustomWriter::createElement($doc, 'admin');
		XMLCustomWriter::appendChild($root, $adminNode);

		/* --- articleinfo --- */

		$articleInfoNode =& XMLCustomWriter::createElement($doc, 'articleinfo');
		XMLCustomWriter::appendChild($adminNode, $articleInfoNode);

		// The first public ID should be a full URL to the article.
		$urlIdNode =& XMLCustomWriter::createChildWithText($doc, $articleInfoNode, 'idpublic', Request::url($journal->getPath(), 'article', 'view', array($article->getId(), $galley->getId())));
		XMLCustomWriter::setAttribute($urlIdNode, 'scheme', 'sici');

		/* --- journal --- */

		$journalNode =& XMLCustomWriter::createElement($doc, 'journal');
		XMLCustomWriter::appendChild($adminNode, $journalNode);
		XMLCustomWriter::setAttribute($journalNode, 'id', 'ojs-' . $journal->getPath());
		XMLCustomWriter::createChildWithText($doc, $journalNode, 'jtitle', $journal->getLocalizedTitle());
		XMLCustomWriter::createChildWithText($doc, $journalNode, 'jshorttitle', $journal->getLocalizedSetting('initials'), false);

		if (!($printIssn = $journal->getSetting('printIssn'))) {
			$printIssn = $unavailableString;
		}
		XMLCustomWriter::createChildWithText($doc, $journalNode, 'idissn', $printIssn);
		if (!($onlineIssn = $journal->getSetting('onlineIssn'))) {
			$onlineIssn = $unavailableString;
		}
		XMLCustomWriter::createChildWithText($doc, $journalNode, 'iddigissn', $onlineIssn);

		/* --- issue --- */

		$issueNode =& XMLCustomWriter::createElement($doc, 'issue');
		XMLCustomWriter::appendChild($adminNode, $issueNode);
		XMLCustomWriter::setAttribute($issueNode, 'id', 'ojs-' . $issue->getBestIssueId());
		XMLCustomWriter::createChildWithText($doc, $issueNode, 'volume', $issue->getVolume(), false);
		XMLCustomWriter::createChildWithText($doc, $issueNode, 'issueno', $issue->getNumber(), false);

		$pubNode =& XMLCustomWriter::createElement($doc, 'pub');
		XMLCustomWriter::appendChild($issueNode, $pubNode);
		XMLCustomWriter::createChildWithText($doc, $pubNode, 'year', $issue->getYear());

		$digPubNode =& XMLCustomWriter::createElement($doc, 'digpub');
		XMLCustomWriter::appendChild($issueNode, $digPubNode);
		if ($issue->getDatePublished()) XMLCustomWriter::createChildWithText($doc, $digPubNode, 'date', EruditExportDom::formatDate($issue->getDatePublished()));

		/* --- Publisher & DTD --- */

		$publisherInstitution =& $journal->getSetting('publisherInstitution');
		$publisherNode =& XMLCustomWriter::createElement($doc, 'publisher');
		XMLCustomWriter::setAttribute($publisherNode, 'id', 'ojs-' . $journal->getId() . '-' . $issue->getId() . '-' . $article->getId());
		XMLCustomWriter::appendChild($adminNode, $publisherNode);
		$publisherInstitution = $unavailableString;
		if (empty($publisherInstitution)) $publisherInstitution = $unavailableString;
		XMLCustomWriter::createChildWithText($doc, $publisherNode, 'orgname', $publisherInstitution);

		$digprodNode =& XMLCustomWriter::createElement($doc, 'digprod');
		XMLCustomWriter::createChildWithText($doc, $digprodNode, 'orgname', $publisherInstitution);
		XMLCustomWriter::setAttribute($digprodNode, 'id', 'ojs-prod-' . $journal->getId() . '-' . $issue->getId() . '-' . $article->getId());
		XMLCustomWriter::appendChild($adminNode, $digprodNode);

		$digdistNode =& XMLCustomWriter::createElement($doc, 'digdist');
		XMLCustomWriter::createChildWithText($doc, $digdistNode, 'orgname', $publisherInstitution);
		XMLCustomWriter::setAttribute($digdistNode, 'id', 'ojs-dist-' . $journal->getId() . '-' . $issue->getId() . '-' . $article->getId());
		XMLCustomWriter::appendChild($adminNode, $digdistNode);


		$dtdNode =& XMLCustomWriter::createElement($doc, 'dtd');
		XMLCustomWriter::appendChild($adminNode, $dtdNode);
		XMLCustomWriter::setAttribute($dtdNode, 'name', 'Erudit Article');
		XMLCustomWriter::setAttribute($dtdNode, 'version', '3.0.0');

		/* --- copyright --- */
		$copyright = $journal->getLocalizedSetting('copyrightNotice');
		XMLCustomWriter::createChildWithText($doc, $adminNode, 'copyright', empty($copyright)?$unavailableString:$copyright);

		/* --- frontmatter --- */

		$frontMatterNode =& XMLCustomWriter::createElement($doc, 'frontmatter');
		XMLCustomWriter::appendChild($root, $frontMatterNode);

		$titleGroupNode =& XMLCustomWriter::createElement($doc, 'titlegr');
		XMLCustomWriter::appendChild($frontMatterNode, $titleGroupNode);

		XMLCustomWriter::createChildWithText($doc, $titleGroupNode, 'title', strip_tags($article->getLocalizedTitle()));


		/* --- authorgr --- */

		$authorGroupNode =& XMLCustomWriter::createElement($doc, 'authorgr');
		XMLCustomWriter::appendChild($frontMatterNode, $authorGroupNode);
		$authorNum = 1;
		foreach ($article->getAuthors() as $author) {
			$authorNode =& XMLCustomWriter::createElement($doc, 'author');
			XMLCustomWriter::appendChild($authorGroupNode, $authorNode);
			XMLCustomWriter::setAttribute($authorNode, 'id', 'ojs-' . $journal->getId() . '-' . $issue->getId() . '-' . $article->getId() . '-' . $galley->getId() . '-' . $authorNum);

			$persNameNode =& XMLCustomWriter::createElement($doc, 'persname');
			XMLCustomWriter::appendChild($authorNode, $persNameNode);

			XMLCustomWriter::createChildWithText($doc, $persNameNode, 'firstname', $author->getFirstName());
			XMLCustomWriter::createChildWithText($doc, $persNameNode, 'middlename', $author->getMiddleName(), false);
			XMLCustomWriter::createChildWithText($doc, $persNameNode, 'familyname', $author->getLastName());

			if ($author->getLocalizedAffiliation() != '') {
				$affiliationNode =& XMLCustomWriter::createElement($doc, 'affiliation');
				XMLCustomWriter::appendChild($authorNode, $affiliationNode);
				XMLCustomWriter::createChildWithText($doc, $affiliationNode, 'blocktext', $author->getLocalizedAffiliation(), false);
			}

			$authorNum++;
		}


		/* --- abstract and keywords --- */
		foreach((array) $article->getAbstract(null) as $locale => $abstract) {
			$abstract = strip_tags($abstract);
			$abstractNode =& XMLCustomWriter::createElement($doc, 'abstract');
			XMLCustomWriter::setAttribute ($abstractNode, 'lang', $locale);
			XMLCustomWriter::appendChild($frontMatterNode, $abstractNode);
			XMLCustomWriter::createChildWithText($doc, $abstractNode, 'blocktext', $abstract);
			unset($abstractNode);
		}

		if ($keywords = $article->getLocalizedSubject()) {
			$keywordGroupNode =& XMLCustomWriter::createElement($doc, 'keywordgr');
			XMLCustomWriter::setAttribute ($keywordGroupNode, 'lang', ($language = $article->getLanguage())?$language:'en');
			foreach (explode(';', $keywords) as $keyword) {
				XMLCustomWriter::createChildWithText($doc, $keywordGroupNode, 'keyword', trim($keyword), false);
			}
			XMLCustomWriter::appendChild($frontMatterNode, $keywordGroupNode);
		}

		/* --- body --- */

		$bodyNode =& XMLCustomWriter::createElement($doc, 'body');
		XMLCustomWriter::appendChild($root, $bodyNode);

		import('classes.file.ArticleFileManager');
		$articleFileManager = new ArticleFileManager($article->getId());
		$file =& $articleFileManager->getFile($galley->getFileId());

		$parser =& SearchFileParser::fromFile($file);
		if (isset($parser)) {
			if ($parser->open()) {
				// File supports text indexing.
				$textNode =& XMLCustomWriter::createElement($doc, 'text');
				XMLCustomWriter::appendChild($bodyNode, $textNode);

				while(($line = $parser->read()) !== false) {
					$line = trim($line);
					if ($line != '') XMLCustomWriter::createChildWithText($doc, $textNode, 'blocktext', $line, false);
				}
				$parser->close();
			}
		}

		return $root;
	}

	function formatDate($date) {
		if ($date == '') return null;
		return date('Y-m-d', strtotime($date));
	}
}

?>