package fi.otavanopisto.pyramus.json.modules;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
import org.apache.commons.lang.StringUtils;
import org.hibernate.StaleObjectStateException;
import fi.internetix.smvc.controllers.JSONRequestContext;
import fi.otavanopisto.pyramus.dao.DAOFactory;
import fi.otavanopisto.pyramus.dao.base.CourseEducationSubtypeDAO;
import fi.otavanopisto.pyramus.dao.base.CourseEducationTypeDAO;
import fi.otavanopisto.pyramus.dao.base.CurriculumDAO;
import fi.otavanopisto.pyramus.dao.base.DefaultsDAO;
import fi.otavanopisto.pyramus.dao.base.EducationSubtypeDAO;
import fi.otavanopisto.pyramus.dao.base.EducationTypeDAO;
import fi.otavanopisto.pyramus.dao.base.EducationalTimeUnitDAO;
import fi.otavanopisto.pyramus.dao.base.SubjectDAO;
import fi.otavanopisto.pyramus.dao.base.TagDAO;
import fi.otavanopisto.pyramus.dao.courses.CourseDescriptionCategoryDAO;
import fi.otavanopisto.pyramus.dao.courses.CourseDescriptionDAO;
import fi.otavanopisto.pyramus.dao.modules.ModuleComponentDAO;
import fi.otavanopisto.pyramus.dao.modules.ModuleDAO;
import fi.otavanopisto.pyramus.dao.users.StaffMemberDAO;
import fi.otavanopisto.pyramus.domainmodel.base.CourseEducationSubtype;
import fi.otavanopisto.pyramus.domainmodel.base.CourseEducationType;
import fi.otavanopisto.pyramus.domainmodel.base.Curriculum;
import fi.otavanopisto.pyramus.domainmodel.base.EducationSubtype;
import fi.otavanopisto.pyramus.domainmodel.base.EducationType;
import fi.otavanopisto.pyramus.domainmodel.base.EducationalTimeUnit;
import fi.otavanopisto.pyramus.domainmodel.base.Subject;
import fi.otavanopisto.pyramus.domainmodel.base.Tag;
import fi.otavanopisto.pyramus.domainmodel.courses.CourseDescription;
import fi.otavanopisto.pyramus.domainmodel.courses.CourseDescriptionCategory;
import fi.otavanopisto.pyramus.domainmodel.modules.Module;
import fi.otavanopisto.pyramus.domainmodel.users.User;
import fi.otavanopisto.pyramus.framework.JSONRequestController;
import fi.otavanopisto.pyramus.framework.UserRole;
/**
* The controller responsible of modifying an existing module.
*
* @see fi.otavanopisto.pyramus.views.modules.EditModuleViewController
*/
public class EditModuleJSONRequestController extends JSONRequestController {
public void process(JSONRequestContext requestContext) {
StaffMemberDAO userDAO = DAOFactory.getInstance().getStaffMemberDAO();
ModuleDAO moduleDAO = DAOFactory.getInstance().getModuleDAO();
CourseDescriptionDAO courseDescriptionDAO = DAOFactory.getInstance().getCourseDescriptionDAO();
CourseDescriptionCategoryDAO descriptionCategoryDAO = DAOFactory.getInstance().getCourseDescriptionCategoryDAO();
CourseEducationTypeDAO courseEducationTypeDAO = DAOFactory.getInstance().getCourseEducationTypeDAO();
CourseEducationSubtypeDAO courseEducationSubtypeDAO = DAOFactory.getInstance().getCourseEducationSubtypeDAO();
ModuleComponentDAO moduleComponentDAO = DAOFactory.getInstance().getModuleComponentDAO();
EducationalTimeUnitDAO educationalTimeUnitDAO = DAOFactory.getInstance().getEducationalTimeUnitDAO();
EducationTypeDAO educationTypeDAO = DAOFactory.getInstance().getEducationTypeDAO();
EducationSubtypeDAO educationSubtypeDAO = DAOFactory.getInstance().getEducationSubtypeDAO();
SubjectDAO subjectDAO = DAOFactory.getInstance().getSubjectDAO();
TagDAO tagDAO = DAOFactory.getInstance().getTagDAO();
DefaultsDAO defaultsDAO = DAOFactory.getInstance().getDefaultsDAO();
CurriculumDAO curriculumDAO = DAOFactory.getInstance().getCurriculumDAO();
Long moduleId = requestContext.getLong("moduleId");
Module module = moduleDAO.findById(moduleId);
Long version = requestContext.getLong("version");
if (!module.getVersion().equals(version))
throw new StaleObjectStateException(Module.class.getName(), module.getId());
// Education types and subtypes submitted from the web page
Map<Long, Vector<Long>> chosenEducationTypes = new HashMap<>();
Enumeration<String> parameterNames = requestContext.getRequest().getParameterNames();
while (parameterNames.hasMoreElements()) {
String name = (String) parameterNames.nextElement();
if (name.startsWith("educationType.")) {
String[] nameElements = name.split("\\.");
Long educationTypeId = new Long(nameElements[1]);
Long educationSubtypeId = new Long(nameElements[2]);
Vector<Long> v = chosenEducationTypes.containsKey(educationTypeId) ? chosenEducationTypes.get(educationTypeId)
: new Vector<Long>();
v.add(educationSubtypeId);
if (!chosenEducationTypes.containsKey(educationTypeId)) {
chosenEducationTypes.put(educationTypeId, v);
}
}
}
// Course Descriptions
List<CourseDescriptionCategory> descriptionCategories = descriptionCategoryDAO.listUnarchived();
Set<CourseDescription> nonExistingDescriptions = new HashSet<>();
for (CourseDescriptionCategory cat: descriptionCategories) {
String varName = "courseDescription." + cat.getId().toString();
Long descriptionCatId = requestContext.getLong(varName + ".catId");
String descriptionText = requestContext.getString(varName + ".text");
CourseDescription oldDesc = courseDescriptionDAO.findByCourseAndCategory(module, cat);
if (descriptionCatId != null && descriptionCatId.intValue() != -1) {
// Description has been submitted from form
if (oldDesc != null)
courseDescriptionDAO.update(oldDesc, module, cat, descriptionText);
else
courseDescriptionDAO.create(module, cat, descriptionText);
} else {
// Description wasn't submitted from form, if it exists, it's marked for deletion
if (oldDesc != null)
nonExistingDescriptions.add(oldDesc);
}
}
// Delete non existing descriptions
for (CourseDescription desc: nonExistingDescriptions) {
courseDescriptionDAO.delete(desc);
}
// Remove education types and subtypes
List<CourseEducationType> courseEducationTypes = module.getCourseEducationTypes();
for (int i = courseEducationTypes.size() - 1; i >= 0; i--) {
CourseEducationType courseEducationType = courseEducationTypes.get(i);
if (!chosenEducationTypes.containsKey(courseEducationType.getEducationType().getId())) {
courseEducationTypeDAO.delete(courseEducationType);
}
else {
Vector<Long> v = chosenEducationTypes.get(courseEducationType.getEducationType().getId());
List<CourseEducationSubtype> courseEducationSubtypes = courseEducationType.getCourseEducationSubtypes();
for (int j = courseEducationSubtypes.size() - 1; j >= 0; j--) {
CourseEducationSubtype moduleEducationSubtype = courseEducationSubtypes.get(j);
if (!v.contains(moduleEducationSubtype.getEducationSubtype().getId())) {
courseEducationType.removeSubtype(moduleEducationSubtype);
}
}
}
}
// Add education types and subtypes
for (Map.Entry<Long, Vector<Long>> entry : chosenEducationTypes.entrySet()) {
EducationType educationType = educationTypeDAO.findById(entry.getKey());
CourseEducationType courseEducationType;
if (!module.contains(educationType)) {
courseEducationType = courseEducationTypeDAO.create(module, educationType);
}
else {
courseEducationType = module.getCourseEducationTypeByEducationTypeId(entry.getKey());
}
for (Long educationSubtypeId : entry.getValue()) {
EducationSubtype educationSubtype = educationSubtypeDAO.findById(educationSubtypeId);
if (!courseEducationType.contains(educationSubtype)) {
courseEducationSubtypeDAO.create(courseEducationType, educationSubtype);
}
}
}
// Module components
int rowCount = requestContext.getInteger("componentsTable.rowCount");
for (int i = 0; i < rowCount; i++) {
String colPrefix = "componentsTable." + i;
String componentName = requestContext.getString(colPrefix + ".name");
Double componentLength = requestContext.getDouble(colPrefix + ".length");
String componentDescription = requestContext.getString(colPrefix + ".description");
Long componentId = requestContext.getLong(colPrefix + ".componentId");
// TODO Component length; should be just hours but it currently depends on the default time unit - ok?
EducationalTimeUnit componentTimeUnit = defaultsDAO.getDefaults().getBaseTimeUnit();
if (componentId == -1) {
componentId = moduleComponentDAO.create(module, componentLength, componentTimeUnit, componentName,
componentDescription).getId();
}
else {
moduleComponentDAO.update(moduleComponentDAO.findById(componentId), componentLength, componentTimeUnit,
componentName, componentDescription);
}
}
// Module basic information
Long subjectId = requestContext.getLong("subject");
Subject subject = subjectDAO.findById(subjectId);
Integer courseNumber = requestContext.getInteger("courseNumber");
String name = requestContext.getString("name");
String description = requestContext.getString("description");
User loggedUser = userDAO.findById(requestContext.getLoggedUserId());
Double moduleLength = requestContext.getDouble("moduleLength");
Long moduleLengthTimeUnitId = requestContext.getLong("moduleLengthTimeUnit");
Long maxParticipantCount = requestContext.getLong("maxParticipantCount");
String tagsText = requestContext.getString("tags");
List<Curriculum> allCurriculums = curriculumDAO.listUnarchived();
Set<Curriculum> curriculums = new HashSet<>();
for (Curriculum curriculum : allCurriculums) {
if ("1".equals(requestContext.getString("curriculum." + curriculum.getId()))) {
curriculums.add(curriculum);
}
}
Set<Tag> tagEntities = new HashSet<>();
if (!StringUtils.isBlank(tagsText)) {
List<String> tags = Arrays.asList(tagsText.split("[\\ ,]"));
for (String tag : tags) {
if (!StringUtils.isBlank(tag)) {
Tag tagEntity = tagDAO.findByText(tag.trim());
if (tagEntity == null)
tagEntity = tagDAO.create(tag);
tagEntities.add(tagEntity);
}
}
}
EducationalTimeUnit moduleLengthTimeUnit = educationalTimeUnitDAO.findById(moduleLengthTimeUnitId);
moduleDAO.update(module, name, subject, courseNumber, moduleLength, moduleLengthTimeUnit, description, maxParticipantCount, loggedUser);
moduleDAO.updateCurriculums(module, curriculums);
// Tags
moduleDAO.updateTags(module, tagEntities);
requestContext.setRedirectURL(requestContext.getReferer(true));
}
public UserRole[] getAllowedRoles() {
return new UserRole[] { UserRole.MANAGER, UserRole.STUDY_PROGRAMME_LEADER, UserRole.ADMINISTRATOR };
}
}