/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/

package org.olat.course.nodes;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.zip.ZipOutputStream;

import org.olat.basesecurity.BaseSecurityManager;
import org.olat.basesecurity.SecurityGroup;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.stack.StackedController;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.control.generic.tabbable.TabbableController;
import org.olat.core.gui.translator.PackageTranslator;
import org.olat.core.id.Identity;
import org.olat.core.id.OLATResourceable;
import org.olat.core.logging.OLog;
import org.olat.core.logging.Tracing;
import org.olat.core.util.Util;
import org.olat.core.util.resource.OresHelper;
import org.olat.course.ICourse;
import org.olat.course.assessment.AssessmentManager;
import org.olat.course.editor.CourseEditorEnv;
import org.olat.course.editor.NodeEditController;
import org.olat.course.editor.StatusDescription;
import org.olat.course.nodes.iq.IQEditController;
import org.olat.course.nodes.iq.IQRunController;
import org.olat.course.nodes.iq.IQUIFactory;
import org.olat.course.properties.CoursePropertyManager;
import org.olat.course.repository.ImportReferencesController;
import org.olat.course.run.environment.CourseEnvironment;
import org.olat.course.run.navigation.NodeRunConstructionResult;
import org.olat.course.run.userview.NodeEvaluation;
import org.olat.course.run.userview.UserCourseEnvironment;
import org.olat.course.statistic.StatisticResourceOption;
import org.olat.course.statistic.StatisticResourceResult;
import org.olat.group.BusinessGroup;
import org.olat.ims.qti.QTIResultManager;
import org.olat.ims.qti.export.QTIExportFormatter;
import org.olat.ims.qti.export.QTIExportFormatterCSVType3;
import org.olat.ims.qti.export.QTIExportManager;
import org.olat.ims.qti.process.AssessmentInstance;
import org.olat.ims.qti.statistics.QTIStatisticResourceResult;
import org.olat.ims.qti.statistics.QTIStatisticSearchParams;
import org.olat.ims.qti.statistics.ui.QTI12StatisticsToolController;
import org.olat.modules.ModuleConfiguration;
import org.olat.repository.RepositoryEntry;
import org.olat.repository.RepositoryEntryImportExport;
import org.olat.repository.RepositoryManager;

/**
 * Initial Date: Feb 9, 2004
 * @author Mike Stock Comment:
 * @author BPS (<a href="http://www.bps-system.de/">BPS Bildungsportal Sachsen GmbH</a>)
 */
public class IQSURVCourseNode extends AbstractAccessableCourseNode implements QTICourseNode {

	private static final long serialVersionUID = 1672009454920536416L;
	private static final OLog log = Tracing.createLoggerFor(IQSURVCourseNode.class);

	private static final String PACKAGE = Util.getPackageName(IQSURVCourseNode.class);
	private static final String TYPE = "iqsurv";
	/** category that is used to persist the node properties */
	public static final String PROPERTY_CATEGORY = "iqsu";
	private static final String PACKAGE_IQ = Util.getPackageName(IQRunController.class);
	/**
	 * Constructor to create a course node of type IMS QTI.
	 */
	public IQSURVCourseNode() {
		super(TYPE);
		updateModuleConfigDefaults(true);
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#createEditController(org.olat.core.gui.UserRequest,
	 *      org.olat.core.gui.control.WindowControl, org.olat.course.ICourse)
	 */
	@Override
	public TabbableController createEditController(UserRequest ureq, WindowControl wControl, StackedController stackPanel, ICourse course, UserCourseEnvironment euce) {
		TabbableController childTabCntrllr = IQUIFactory.createIQSurveyEditController(ureq, wControl, stackPanel, course, this, course.getCourseEnvironment().getCourseGroupManager(), euce);
		CourseNode chosenNode = course.getEditorTreeModel().getCourseNode(euce.getCourseEditorEnv().getCurrentCourseNodeId());
		return new NodeEditController(ureq, wControl, course.getEditorTreeModel(), course, chosenNode, course.getCourseEnvironment()
				.getCourseGroupManager(), euce, childTabCntrllr);
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#createNodeRunConstructionResult(org.olat.core.gui.UserRequest,
	 *      org.olat.core.gui.control.WindowControl,
	 *      org.olat.course.run.userview.UserCourseEnvironment,
	 *      org.olat.course.run.userview.NodeEvaluation)
	 */
	public NodeRunConstructionResult createNodeRunConstructionResult(UserRequest ureq, WindowControl wControl,
			UserCourseEnvironment userCourseEnv, NodeEvaluation ne, String nodecmd) {
		Controller controller = IQUIFactory.createIQSurveyRunController(ureq, wControl, userCourseEnv, ne, this);
		Controller ctrl = TitledWrapperHelper.getWrapper(ureq, wControl, controller, this, "o_iqsurv_icon");
		return new NodeRunConstructionResult(ctrl);
	}
	
	@Override
	public List<Controller> createAssessmentTools(UserRequest ureq, WindowControl wControl,
			CourseEnvironment courseEnv, AssessmentToolOptions options) {
		List<Controller> tools = new ArrayList<>();
		tools.add(new QTI12StatisticsToolController(ureq, wControl, courseEnv, options, this));
		return tools;
	}

	@Override
	public StatisticResourceResult createStatisticNodeResult(UserRequest ureq, WindowControl wControl, UserCourseEnvironment userCourseEnv, StatisticResourceOption options) {
		Long courseId = userCourseEnv.getCourseEnvironment().getCourseResourceableId();
		OLATResourceable courseOres = OresHelper.createOLATResourceableInstance("CourseModule", courseId);
		
		List<SecurityGroup> limitMemberships = new ArrayList<>();
		if(options.getParticipantsCourse() != null) {
			limitMemberships.add(options.getParticipantsCourse().getParticipantGroup());
		}
		if(options.getParticipantsGroups() != null && !options.getParticipantsGroups().isEmpty()) {
			for(BusinessGroup group:options.getParticipantsGroups()) {
				limitMemberships.add(group.getPartipiciantGroup());
			}
		}
		
		QTIStatisticSearchParams searchParams = new QTIStatisticSearchParams(courseOres.getResourceableId(), getIdent());
		searchParams.setLimitToSecGroups(limitMemberships);

		QTIStatisticResourceResult result = new QTIStatisticResourceResult(courseOres, this, searchParams);
		return result;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#isConfigValid()
	 */
	public StatusDescription isConfigValid() {
		/*
		 * first check the one click cache
		 */
		if (oneClickStatusCache != null) { return oneClickStatusCache[0]; }

		boolean isValid = getModuleConfiguration().get(IQEditController.CONFIG_KEY_REPOSITORY_SOFTKEY) != null;
		if (isValid) {
			/*
			 * COnfiugre an IQxxx BB with a repo entry, do not publish this BB, mark
			 * IQxxx as deleted, remove repo entry, undelete BB IQxxx and bang you
			 * enter this if.
			 */
			Object repoEntry = IQEditController.getIQReference(getModuleConfiguration(), false);
			if (repoEntry == null) {
				isValid = false;
				IQEditController.removeIQReference(getModuleConfiguration());
			}
		}
		StatusDescription sd = StatusDescription.NOERROR;
		if (!isValid) {
			String shortKey = "error.surv.undefined.short";
			String longKey = "error.surv.undefined.long";
			String[] params = new String[] { this.getShortTitle() };
			String translPackage = Util.getPackageName(IQEditController.class);
			sd = new StatusDescription(StatusDescription.ERROR, shortKey, longKey, params, translPackage);
			sd.setDescriptionForUnit(getIdent());
			// set which pane is affected by error
			sd.setActivateableViewIdentifier(IQEditController.PANE_TAB_IQCONFIG_SURV);
		}
		return sd;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#isConfigValid(org.olat.course.run.userview.UserCourseEnvironment)
	 */
	public StatusDescription[] isConfigValid(CourseEditorEnv cev) {
		oneClickStatusCache = null;
		// only here we know which translator to take for translating condition
		// error messages
		String translatorStr = Util.getPackageName(IQEditController.class);
		List<StatusDescription> sds = isConfigValidWithTranslator(cev, translatorStr, getConditionExpressions());
		oneClickStatusCache = StatusDescriptionHelper.sort(sds);
		return oneClickStatusCache;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#getReferencedRepositoryEntry()
	 */
	public RepositoryEntry getReferencedRepositoryEntry() {
		// ",false" because we do not want to be strict, but just indicate whether
		// the reference still exists or not
		RepositoryEntry re = IQEditController.getIQReference(getModuleConfiguration(), false);
		return re;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#needsReferenceToARepositoryEntry()
	 */
	public boolean needsReferenceToARepositoryEntry() {
		return true;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#informOnDelete(org.olat.core.gui.UserRequest,
	 *      org.olat.course.ICourse)
	 */
	public String informOnDelete(Locale locale, ICourse course) {
		// Check if there are qtiresults for this questionnaire
		String repositorySoftKey = (String) getModuleConfiguration().get(IQEditController.CONFIG_KEY_REPOSITORY_SOFTKEY);
		Long repKey = RepositoryManager.getInstance().lookupRepositoryEntryBySoftkey(repositorySoftKey, true).getKey();
		if (QTIResultManager.getInstance().hasResultSets(course.getResourceableId(), this.getIdent(), repKey)) { return new PackageTranslator(
				PACKAGE_IQ, locale).translate("info.nodedelete"); }
		return null;
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#cleanupOnDelete(org.olat.course.ICourse)
	 */
	public void cleanupOnDelete(ICourse course) {
		CoursePropertyManager pm = course.getCourseEnvironment().getCoursePropertyManager();
		// 1) Delete all properties: attempts
		pm.deleteNodeProperties(this, null);
		// 2) Delete all qtiresults for this node
		String repositorySoftKey = (String) getModuleConfiguration().get(IQEditController.CONFIG_KEY_REPOSITORY_SOFTKEY);
		RepositoryEntry re = RepositoryManager.getInstance().lookupRepositoryEntryBySoftkey(repositorySoftKey, false);
		if(re != null) {
			QTIResultManager.getInstance().deleteAllResults(course.getResourceableId(), getIdent(), re.getKey());
		}
	}

	@Override
	public boolean archiveNodeData(Locale locale, ICourse course, ArchiveOptions options, ZipOutputStream exportStream, String charset) {
		QTIExportManager qem = QTIExportManager.getInstance();
		String repositorySoftKey = (String) getModuleConfiguration().get(IQEditController.CONFIG_KEY_REPOSITORY_SOFTKEY);
		RepositoryEntry re = RepositoryManager.getInstance().lookupRepositoryEntryBySoftkey(repositorySoftKey, true);

		QTIExportFormatter qef = new QTIExportFormatterCSVType3(locale, null,"\t", "\"", "\\", "\r\n", false);
		try {
			return qem.selectAndExportResults(qef, course.getResourceableId(), getShortTitle(), getIdent(), re, exportStream, ".xls");
		} catch (IOException e) {
			log.error("", e);
			return false;
		}
	}

	/**
	 * @see org.olat.course.nodes.GenericCourseNode#exportNode(java.io.File,
	 *      org.olat.course.ICourse)
	 */
	public void exportNode(File exportDirectory, ICourse course) {
		String repositorySoftKey = (String) getModuleConfiguration().get(IQEditController.CONFIG_KEY_REPOSITORY_SOFTKEY);
		if (repositorySoftKey == null) return; // nothing to export
		// self healing
		RepositoryEntry re = RepositoryManager.getInstance().lookupRepositoryEntryBySoftkey(repositorySoftKey, false);
		if (re == null) {
			// nothing to export, but correct the module configuration
			IQEditController.removeIQReference(getModuleConfiguration());
			return;
		}
		File fExportDirectory = new File(exportDirectory, getIdent());
		fExportDirectory.mkdirs();
		RepositoryEntryImportExport reie = new RepositoryEntryImportExport(re, fExportDirectory);
		reie.exportDoExport();
	}

	/**
	 * @see org.olat.course.nodes.GenericCourseNode#importNode(java.io.File,
	 *      org.olat.course.ICourse, org.olat.core.gui.UserRequest,
	 *      org.olat.core.gui.control.WindowControl)
	 */
	public Controller importNode(File importDirectory, ICourse course, boolean unattendedImport, UserRequest ureq, WindowControl wControl) {
		File importSubdir = new File(importDirectory, getIdent());
		RepositoryEntryImportExport rie = new RepositoryEntryImportExport(importSubdir);
		if (!rie.anyExportedPropertiesAvailable()) return null;

		// do import referenced repository entries
		if (unattendedImport) {
			Identity admin = BaseSecurityManager.getInstance().findIdentityByName("administrator");
			ImportReferencesController.doImport(rie, this, ImportReferencesController.IMPORT_SURVEY,
				true, admin);
			return null;
		} else {
			return new ImportReferencesController(ureq, wControl, this, ImportReferencesController.IMPORT_SURVEY, rie);
		}
	}

	/**
	 * @see org.olat.course.nodes.CourseNode#createInstanceForCopy()
	 */
	public CourseNode createInstanceForCopy() {
		CourseNode copyInstance = super.createInstanceForCopy();
		IQEditController.removeIQReference(copyInstance.getModuleConfiguration());
		return copyInstance;
	}

	/**
	 * Update the module configuration to have all mandatory configuration flags
	 * set to usefull default values
	 *
	 * @param isNewNode true: an initial configuration is set; false: upgrading
	 *          from previous node configuration version, set default to maintain
	 *          previous behaviour
	 */
	public void updateModuleConfigDefaults(boolean isNewNode) {
		ModuleConfiguration config = getModuleConfiguration();
		if (isNewNode) {
			// add default module configuration
			config.set(IQEditController.CONFIG_KEY_ENABLEMENU, new Boolean(true));
			config.set(IQEditController.CONFIG_KEY_SEQUENCE, AssessmentInstance.QMD_ENTRY_SEQUENCE_ITEM);
			config.set(IQEditController.CONFIG_KEY_TYPE, AssessmentInstance.QMD_ENTRY_TYPE_SURVEY);
			config.set(IQEditController.CONFIG_KEY_SUMMARY, AssessmentInstance.QMD_ENTRY_SUMMARY_NONE); // not used in survey
		}
	}

	/**
	 * @see org.olat.course.nodes.AssessableCourseNode#getUserAttempts(org.olat.course.run.userview.UserCourseEnvironment)
	 */
	public Integer getUserAttempts(UserCourseEnvironment userCourseEnvironment) {
		AssessmentManager am = userCourseEnvironment.getCourseEnvironment().getAssessmentManager();
		Identity mySelf = userCourseEnvironment.getIdentityEnvironment().getIdentity();
		Integer userAttemptsValue = am.getNodeAttempts(this, mySelf);
		return userAttemptsValue;

	}

	/**
	 * @see org.olat.course.nodes.AssessableCourseNode#hasAttemptsConfigured()
	 */
	public boolean hasAttemptsConfigured() {
		return true;
	}

	/**
	 * @see org.olat.course.nodes.AssessableCourseNode#updateUserAttempts(java.lang.Integer,
	 *      org.olat.course.run.userview.UserCourseEnvironment,
	 *      org.olat.core.id.Identity)
	 */
	public void updateUserAttempts(Integer userAttempts, UserCourseEnvironment userCourseEnvironment, Identity coachingIdentity) {
		if (userAttempts != null) {
			AssessmentManager am = userCourseEnvironment.getCourseEnvironment().getAssessmentManager();
			Identity mySelf = userCourseEnvironment.getIdentityEnvironment().getIdentity();
			am.saveNodeAttempts(this, coachingIdentity, mySelf, userAttempts);
		}
	}

	/**
	 * @see org.olat.course.nodes.AssessableCourseNode#incrementUserAttempts(org.olat.course.run.userview.UserCourseEnvironment)
	 */
	public void incrementUserAttempts(UserCourseEnvironment userCourseEnvironment) {
		AssessmentManager am = userCourseEnvironment.getCourseEnvironment().getAssessmentManager();
		Identity mySelf = userCourseEnvironment.getIdentityEnvironment().getIdentity();
		am.incrementNodeAttempts(this, mySelf, userCourseEnvironment);
	}

}