<?php

/**
 * @file controllers/grid/toc/TocGridHandler.inc.php
 *
 * Copyright (c) 2014-2020 Simon Fraser University
 * Copyright (c) 2000-2020 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class TocGridHandler
 * @ingroup controllers_grid_toc
 *
 * @brief Handle TOC (table of contents) grid requests.
 */

import('lib.pkp.classes.controllers.grid.CategoryGridHandler');
import('controllers.grid.toc.TocGridCategoryRow');
import('controllers.grid.toc.TocGridRow');

class TocGridHandler extends CategoryGridHandler {
	var $submissionsBySectionId = [];

	/**
	 * Constructor
	 */
	function __construct() {
		parent::__construct();
		$this->addRoleAssignment(
			array(ROLE_ID_MANAGER),
			array('fetchGrid', 'fetchCategory', 'fetchRow', 'saveSequence', 'removeArticle', 'setAccessStatus')
		);
		$this->submissionsBySectionId = array();
	}


	//
	// Implement template methods from PKPHandler.
	//
	/**
	 * @copydoc PKPHandler::authorize()
	 */
	function authorize($request, &$args, $roleAssignments) {
		import('lib.pkp.classes.security.authorization.ContextAccessPolicy');
		$this->addPolicy(new ContextAccessPolicy($request, $roleAssignments));

		import('classes.security.authorization.OjsIssueRequiredPolicy');
		$this->addPolicy(new OjsIssueRequiredPolicy($request, $args));

		return parent::authorize($request, $args, $roleAssignments);
	}

	/**
	 * @copydoc CategoryGridHandler::initialize()
	 */
	function initialize($request, $args = null) {
		parent::initialize($request, $args);

		AppLocale::requireComponents(LOCALE_COMPONENT_APP_EDITOR, LOCALE_COMPONENT_PKP_SUBMISSION, LOCALE_COMPONENT_APP_SUBMISSION);

		//
		// Grid columns.
		//
		import('controllers.grid.toc.TocGridCellProvider');
		$tocGridCellProvider = new TocGridCellProvider();

		// Article title
		$this->addColumn(
			new GridColumn(
				'title',
				'article.title',
				null,
				null,
				$tocGridCellProvider
			)
		);

		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		if ($request->getJournal()->getData('publishingMode') == PUBLISHING_MODE_SUBSCRIPTION && $issue->getAccessStatus() == ISSUE_ACCESS_SUBSCRIPTION) {
			// Article access status
			$this->addColumn(
				new GridColumn(
					'access',
					'reader.openAccess',
					null,
					'controllers/grid/common/cell/selectStatusCell.tpl',
					$tocGridCellProvider,
					array('width' => 20, 'alignment' => COLUMN_ALIGNMENT_CENTER)
				)
			);
		}
	}

	/**
	 * @copydoc GridHandler::initFeatures()
	 */
	function initFeatures($request, $args) {
		return array(new OrderCategoryGridItemsFeature(ORDER_CATEGORY_GRID_CATEGORIES_AND_ROWS, true, $this));
	}

	/**
	 * @copydoc CategoryGridHandler::getCategoryRowIdParameterName()
	 */
	function getCategoryRowIdParameterName() {
		return 'sectionId';
	}

	/**
	 * @copydoc GridDataProvider::getRequestArgs()
	 */
	function getRequestArgs() {
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		return array_merge(
			parent::getRequestArgs(),
			array('issueId' => $issue->getId())
		);
	}

	/**
	 * Get the row handler - override the default row handler
	 * @return TocGridRow
	 */
	protected function getRowInstance() {
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		return new TocGridRow($issue->getId());
	}

	/**
	 * @copydoc CategoryGridHandler::getCategoryRowInstance()
	 */
	protected function getCategoryRowInstance() {
		return new TocGridCategoryRow();
	}

	/**
	 * @copydoc CategoryGridHandler::loadCategoryData()
	 */
	function loadCategoryData($request, &$section, $filter = null) {
		return $this->submissionsBySectionId[$section->getId()];
	}

	/**
	 * @copydoc GridHandler::loadData()
	 */
	protected function loadData($request, $filter) {
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		import('lib.pkp.classes.submission.PKPSubmission'); // STATUS_...
		$submissionsInSections = Services::get('submission')->getInSections($issue->getId(), $request->getContext()->getId());
		foreach ($submissionsInSections as $sectionId => $articles) {
			foreach($articles['articles'] as $article) {
				$this->submissionsBySectionId[$sectionId][$article->getId()] = $article;
			}
		}
		$sections = Application::get()->getSectionDao()->getByIssueId($issue->getId());
		$arrayKeySections = [];
		foreach ($sections as $section) {
			$arrayKeySections[$section->getId()] = $section;
		}
		return $arrayKeySections;
	}

	/**
	 * @copydoc GridHandler::getDataElementSequence()
	 *
	 * @param Section|Submission $object
	 */
	function getDataElementSequence($object) {
		if (is_a($object, 'Submission')) {
			return $object->getCurrentPublication()->getData('seq');
		} else { // section
			$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
			$sectionDao = DAORegistry::getDAO('SectionDAO'); /* @var $sectionDao SectionDAO */
			$customOrdering = $sectionDao->getCustomSectionOrder($issue->getId(), $object->getId());
			if ($customOrdering === null) { // No custom ordering specified; use default section ordering
				return $object->getSequence();
			} else { // Custom ordering specified.
				return $customOrdering;
			}
		}
	}

	/**
	 * @copydoc GridHandler::setDataElementSequence()
	 */
	function setDataElementSequence($request, $sectionId, $gridDataElement, $newSequence) {
		$sectionDao = DAORegistry::getDAO('SectionDAO'); /* @var $sectionDao SectionDAO */
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		if (!$sectionDao->customSectionOrderingExists($issue->getId())) {
			$sectionDao->setDefaultCustomSectionOrders($issue->getId());
		}
		$sectionDao->updateCustomSectionOrder($issue->getId(), $sectionId, $newSequence);
	}

	/**
	 * @copydoc CategoryGridHandler::getDataElementInCategorySequence()
	 */
	function getDataElementInCategorySequence($categoryId, &$submission) {
		return $submission->getCurrentPublication()->getData('seq');
	}

	/**
	 * @copydoc GridHandler::setDataElementSequence()
	 */
	function setDataElementInCategorySequence($sectionId, &$submission, $newSequence) {
		$publication = $submission->getCurrentPublication();
		$params = ['seq' => $newSequence];
		if ($sectionId != $publication->getData('sectionId')) {
			$params['sectionId'] = $sectionId;
		}
		$publication = Services::get('publication')->edit($publication, $params, Application::get()->getRequest());
	}

	//
	// Public handler functions
	//
	/**
	 * Remove an article from the issue.
	 * @param $args array
	 * @param $request PKPRequest
	 * @return JSONMessage JSON object
	 */
	function removeArticle($args, $request) {
		$journal = $request->getJournal();
		$submission = Services::get('submission')->get((int) $request->getUserVar('articleId'));
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		import('classes.article.ArticleTombstoneManager');
		$articleTombstoneManager = new ArticleTombstoneManager();
		if ($submission && $request->checkCSRF()) {
			if ($issue->getPublished() && $submission->getCurrentPublication()->getData('issueId') == $issue->getId()) {
				$articleTombstoneManager->insertArticleTombstone($submission, $journal);
			}
			foreach ((array) $submission->getData('publications') as $publication) {
				if ($publication->getData('issueId') === (int) $issue->getId()
						&& in_array($publication->getData('status'), [STATUS_SCHEDULED, STATUS_PUBLISHED])) {
					$publication = Services::get('publication')->unpublish($publication);
					$publication = Services::get('publication')->edit(
						$publication,
						['seq' => ''],
						$request
					);
				}
			}
			// If the article is the only one in the section, delete the section from custom issue ordering
			$sectionId = $submission->getCurrentPublication()->getData('sectionId');
			$submissionsInSections = Services::get('submission')->getInSections($issue->getId(), $issue->getJournalId());
			if (!empty($submissionsInSections[$sectionId]) && count($submissionsInSections[$sectionId]) === 1) {
				$sectionDao = DAORegistry::getDAO('SectionDAO'); /* @var $sectionDao SectionDAO */
				$sectionDao->deleteCustomSection($issue->getId(), $sectionId);
			}
			return DAO::getDataChangedEvent();
		}

		// If we've fallen through, it must be a badly-specified article
		return new JSONMessage(false);
	}

	/**
	 * Set access status on an article.
	 * @param $args array
	 * @param $request PKPRequest
	 * @return JSONMessage JSON object
	 */
	function setAccessStatus($args, $request) {
		$articleId = (int) $request->getUserVar('articleId');
		$issue = $this->getAuthorizedContextObject(ASSOC_TYPE_ISSUE);
		$submission = Services::get('submission')->get($articleId);
		$publication = $submission ? $submission->getCurrentPublication() : null;
		if ($publication && $publication->getData('issueId') == $issue->getId() && $request->checkCSRF()) {
			$publication = Services::get('publication')->edit($publication, ['accessStatus' => $request->getUserVar('status')], $request);
			return DAO::getDataChangedEvent();
		}

		// If we've fallen through, it must be a badly-specified article
		return new JSONMessage(false);
	}
}


