ru.org.linux.gallery.DeleteImageController.java Source code

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Here is the source code for ru.org.linux.gallery.DeleteImageController.java

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/*
 * Copyright 1998-2012 Linux.org.ru
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package ru.org.linux.gallery;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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.ModelAndView;
import org.springframework.web.servlet.view.RedirectView;
import ru.org.linux.auth.AccessViolationException;
import ru.org.linux.group.GroupPermissionService;
import ru.org.linux.site.Template;
import ru.org.linux.topic.*;
import ru.org.linux.user.User;

import javax.servlet.http.HttpServletRequest;

@Controller
@RequestMapping("/delete_image")
public class DeleteImageController {
    @Autowired
    private ImageDao imageDao;

    @Autowired
    private ImageService imageService;

    @Autowired
    private TopicDao topicDao;

    @Autowired
    private TopicPrepareService prepareService;

    @Autowired
    private GroupPermissionService permissionService;

    private void checkDelete(PreparedTopic topic, User user) throws AccessViolationException {
        if (!permissionService.isEditable(topic, user)) {
            throw new AccessViolationException("    ? ");
        }

        if (topic.getSection().isImagepost()) {
            throw new AccessViolationException(
                    " ?  ? ? ?");
        }
    }

    @RequestMapping(method = RequestMethod.GET)
    public ModelAndView deleteForm(@RequestParam(required = true) int id, HttpServletRequest request)
            throws Exception {
        Template tmpl = Template.getTemplate(request);

        Image image = imageDao.getImage(id);
        Topic topic = topicDao.getById(image.getTopicId());
        PreparedTopic preparedTopic = prepareService.prepareTopic(topic, request.isSecure(), tmpl.getCurrentUser());

        checkDelete(preparedTopic, tmpl.getCurrentUser());

        ModelAndView mv = new ModelAndView("delete_image");

        mv.addObject("image", image);
        mv.addObject("preparedTopic", preparedTopic);

        return mv;
    }

    @RequestMapping(method = RequestMethod.POST)
    public RedirectView deleteImage(@RequestParam(required = true) int id, HttpServletRequest request)
            throws Exception {
        Template tmpl = Template.getTemplate(request);

        Image image = imageDao.getImage(id);
        Topic topic = topicDao.getById(image.getTopicId());
        PreparedTopic preparedTopic = prepareService.prepareTopic(topic, request.isSecure(), tmpl.getCurrentUser());

        checkDelete(preparedTopic, tmpl.getCurrentUser());

        imageService.deleteImage(tmpl.getCurrentUser(), image);

        return new RedirectView(TopicLinkBuilder.baseLink(topic).forceLastmod().build());
    }
}