de.whs.poodle.controllers.instructor.ManageCourseController.java Source code

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Here is the source code for de.whs.poodle.controllers.instructor.ManageCourseController.java

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/*
 * Copyright 2015 Westflische Hochschule
 *
 * This file is part of Poodle.
 *
 * Poodle 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.
 *
 * Poodle 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 Poodle.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.whs.poodle.controllers.instructor;

import java.util.List;
import java.util.stream.Collectors;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
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.servlet.mvc.support.RedirectAttributes;

import de.whs.poodle.beans.Course;
import de.whs.poodle.beans.Instructor;
import de.whs.poodle.repositories.CourseRepository;
import de.whs.poodle.repositories.InstructorRepository;
import de.whs.poodle.repositories.exceptions.BadRequestException;
import de.whs.poodle.repositories.exceptions.NotFoundException;
import de.whs.poodle.repositories.exceptions.RepositoryException;
import de.whs.poodle.services.AddTermToCourseService;

@Controller
@RequestMapping("instructor/courses/{courseId}")
public class ManageCourseController {

    @Autowired
    private CourseRepository courseRepo;

    @Autowired
    private InstructorRepository instructorRepo;

    @Autowired
    private AddTermToCourseService addTermToCourseService;

    @ModelAttribute
    public void populateModel(@PathVariable int courseId, @ModelAttribute("globalCourses") List<Course> courses,
            Model model) {
        Course course = courseRepo.getById(courseId);
        if (course == null)
            throw new NotFoundException();

        /* list of instructors that could also have access to this course.
         * We filter out the owner of the course since it doesn't make sense to display him. */
        List<Instructor> otherInstructors = instructorRepo.getAll();
        otherInstructors = otherInstructors.stream().filter(i -> i.getId() != course.getInstructor().getId())
                .collect(Collectors.toList());

        /* List of courses that can be linked with this one. Filter out
         * this course since it doesn't make sense to display it. */
        List<Course> linkedCourses = courses.stream().filter(m -> m.getId() != courseId)
                .collect(Collectors.toList());

        model.addAttribute("course", course);
        model.addAttribute("otherInstructors", otherInstructors);
        model.addAttribute("linkedCourses", linkedCourses);
    }

    @RequestMapping
    @PreAuthorize("@instructorSecurity.hasAccessToCourse(authentication.name, #courseId)")
    public String get(@PathVariable int courseId) {
        return "instructor/manageCourse";
    }

    @RequestMapping(method = RequestMethod.POST)
    @PreAuthorize("@instructorSecurity.hasAccessToCourse(authentication.name, #courseId)")
    public String edit(@PathVariable int courseId, @Valid Course course, BindingResult bindingResult,
            RedirectAttributes redirectAttributes, Model model) {
        if (bindingResult.hasErrors())
            return "instructor/manageCourse";

        try {
            course.setId(courseId);
            courseRepo.edit(course);
            redirectAttributes.addFlashAttribute("okMessageCode", "settingsSaved");
            return "redirect:/instructor/courses/{courseId}";
        } catch (RepositoryException e) {
            bindingResult.rejectValue("name", "courseWithThisNameAlreadyExists");
            return "instructor/manageCourse";
        }
    }

    @RequestMapping(method = RequestMethod.POST, params = "nextTermName")
    @PreAuthorize("@instructorSecurity.hasAccessToCourse(authentication.name, #courseId)")
    public String addTerm(@ModelAttribute Instructor instructor, @PathVariable int courseId,
            @RequestParam String nextTermName, RedirectAttributes redirectAttributes) {
        try {
            addTermToCourseService.addTermToCourse(instructor.getId(), courseId, nextTermName);
            redirectAttributes.addFlashAttribute("okMessageCode", "termAdded");
        } catch (BadRequestException e) {
            redirectAttributes.addFlashAttribute("errorMessageCode", "termAlreadyExistsForThisCourse");
        }

        return "redirect:/instructor/courses/{courseId}";
    }

    @RequestMapping(method = RequestMethod.POST, params = "delete")
    @PreAuthorize("@instructorSecurity.hasAccessToCourse(authentication.name, #courseId)")
    public String delete(@PathVariable int courseId, RedirectAttributes redirectAttributes) {
        courseRepo.delete(courseId);
        redirectAttributes.addFlashAttribute("okMessageCode", "courseDeleted");
        return "redirect:/instructor";
    }
}