csns.web.controller.AssignmentControllerS.java Source code

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Here is the source code for csns.web.controller.AssignmentControllerS.java

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/*
 * This file is part of the CSNetwork Services (CSNS) project.
 * 
 * Copyright 2013, Chengyu Sun (csun@calstatela.edu).
 * 
 * CSNS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 * 
 * CSNS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with CSNS. If not, see http://www.gnu.org/licenses/agpl.html.
 */
package csns.web.controller;

import java.util.Calendar;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.bind.support.SessionStatus;
import org.springframework.web.multipart.MultipartFile;

import csns.model.academics.Assignment;
import csns.model.academics.dao.AssignmentDao;
import csns.model.academics.dao.SectionDao;
import csns.model.core.Resource;
import csns.model.core.ResourceType;
import csns.security.SecurityUtils;
import csns.util.FileIO;
import csns.web.editor.CalendarPropertyEditor;
import csns.web.validator.AssignmentValidator;

@Controller
@SessionAttributes("assignment")
public class AssignmentControllerS {

    @Autowired
    private SectionDao sectionDao;

    @Autowired
    private AssignmentDao assignmentDao;

    @Autowired
    private AssignmentValidator assignmentValidator;

    @Autowired
    private FileIO fileIO;

    private static final Logger logger = LoggerFactory.getLogger(AssignmentControllerS.class);

    @InitBinder
    public void initBinder(WebDataBinder binder) {
        binder.registerCustomEditor(Calendar.class, new CalendarPropertyEditor());
    }

    @RequestMapping(value = "/assignment/create", method = RequestMethod.GET)
    public String create(@RequestParam Long sectionId, ModelMap models) {
        Assignment assignment = new Assignment();
        assignment.setSection(sectionDao.getSection(sectionId));
        assignment.setDescription(new Resource("Assignment Description"));
        models.put("assignment", assignment);
        models.put("resourceTypes", ResourceType.values());
        return "assignment/create";
    }

    @RequestMapping(value = "/assignment/create", method = RequestMethod.POST)
    public String create(@ModelAttribute Assignment assignment,
            @RequestParam(value = "file", required = false) MultipartFile uploadedFile, BindingResult result,
            SessionStatus sessionStatus) {
        assignmentValidator.validate(assignment, uploadedFile, result);
        if (result.hasErrors())
            return "assignment/create";

        Resource description = assignment.getDescription();
        if (description.getType() == ResourceType.NONE)
            assignment.setDescription(null);
        else if (description.getType() == ResourceType.FILE)
            description.setFile(fileIO.save(uploadedFile, SecurityUtils.getUser(), false));

        assignment = assignmentDao.saveAssignment(assignment);
        sessionStatus.setComplete();

        logger.info(SecurityUtils.getUser().getUsername() + " created assignment " + assignment.getId());

        return "redirect:/section/taught#section-" + assignment.getSection().getId();
    }

    @RequestMapping(value = "/assignment/edit", method = RequestMethod.GET)
    public String edit(@RequestParam Long id, ModelMap models) {
        Assignment assignment = assignmentDao.getAssignment(id);
        if (assignment.getDescription() == null)
            assignment.setDescription(new Resource("Assignment Description"));
        models.put("assignment", assignment);
        return assignment.isOnline() ? "assignment/online/edit" : "assignment/edit";
    }

    @RequestMapping(value = "/assignment/edit", method = RequestMethod.POST)
    public String edit(@ModelAttribute Assignment assignment,
            @RequestParam(value = "file", required = false) MultipartFile uploadedFile, HttpServletRequest request,
            BindingResult result, SessionStatus sessionStatus) {
        assignmentValidator.validate(assignment, uploadedFile, result);
        if (result.hasErrors())
            return assignment.isOnline() ? "assignment/online/edit" : "assignment/edit";

        if (!assignment.isOnline()) {
            Resource description = assignment.getDescription();
            if (description.getType() == ResourceType.NONE)
                assignment.setDescription(null);
            else if (description.getType() == ResourceType.FILE && uploadedFile != null && !uploadedFile.isEmpty())
                description.setFile(fileIO.save(uploadedFile, SecurityUtils.getUser(), false));
        }

        assignment = assignmentDao.saveAssignment(assignment);
        sessionStatus.setComplete();

        logger.info(SecurityUtils.getUser().getUsername() + " edited assignment " + assignment.getId());

        return assignment.isOnline() && request.getParameter("next") != null
                ? "redirect:/assignment/online/editQuestionSheet?assignmentId=" + assignment.getId()
                : "redirect:/section/taught#section-" + assignment.getSection().getId();
    }

}