/* Copyright 2004, 2005 Acegi Technology Pty Limited
    *
    * 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 sample.contact;
  
  import org.acegisecurity.acl.basic.SimpleAclEntry;
  
  import org.springframework.beans.factory.InitializingBean;
  
  import org.springframework.dao.DataAccessException;
  
  import org.springframework.util.Assert;
  
  import org.springframework.validation.BindException;
  
  import org.springframework.web.bind.RequestUtils;
  import org.springframework.web.servlet.ModelAndView;
  import org.springframework.web.servlet.mvc.SimpleFormController;
  import org.springframework.web.servlet.view.RedirectView;
  
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  
  /***
   * Controller for adding an ACL permission.
   *
   * @author Ben Alex
   * @version $Id: AddPermissionController.java,v 1.4 2005/11/17 00:56:08 benalex Exp $
   */
  public class AddPermissionController extends SimpleFormController
      implements InitializingBean {
      //~ Instance fields ========================================================
  
      private ContactManager contactManager;
  
      //~ Methods ================================================================
  
      public void setContactManager(ContactManager contact) {
          this.contactManager = contact;
      }
  
      public ContactManager getContactManager() {
          return contactManager;
      }
  
      public void afterPropertiesSet() throws Exception {
          Assert.notNull(contactManager,
              "A ContactManager implementation is required");
      }
  
      protected ModelAndView disallowDuplicateFormSubmission(
          HttpServletRequest request, HttpServletResponse response)
          throws Exception {
          BindException errors = new BindException(formBackingObject(request),
                  getCommandName());
          errors.reject("err.duplicateFormSubmission",
              "Duplicate form submission.");
  
          return showForm(request, response, errors);
      }
  
      protected Object formBackingObject(HttpServletRequest request)
          throws Exception {
          int contactId = RequestUtils.getRequiredIntParameter(request,
                  "contactId");
  
          Contact contact = contactManager.getById(new Long(contactId));
  
          AddPermission addPermission = new AddPermission();
          addPermission.setContact(contact);
  
          return addPermission;
      }
  
      protected ModelAndView handleInvalidSubmit(HttpServletRequest request,
          HttpServletResponse response) throws Exception {
          return disallowDuplicateFormSubmission(request, response);
      }
  
      protected ModelAndView onSubmit(HttpServletRequest request,
          HttpServletResponse response, Object command, BindException errors)
         throws Exception {
         AddPermission addPermission = (AddPermission) command;
 
         try {
             contactManager.addPermission(addPermission.getContact(),
                 addPermission.getRecipient(), addPermission.getPermission());
         } catch (DataAccessException existingPermission) {
             existingPermission.printStackTrace();
             errors.rejectValue("recipient", "err.recipientExistsForContact",
                 "This recipient already has permissions to this contact.");
 
             return showForm(request, response, errors);
         }
 
         return new ModelAndView(new RedirectView(getSuccessView()));
     }
 
     protected Map referenceData(HttpServletRequest request)
         throws Exception {
         Map model = new HashMap();
         model.put("recipients", listRecipients(request));
         model.put("permissions", listPermissions(request));
 
         return model;
     }
 
     private Map listPermissions(HttpServletRequest request) {
         Map map = new LinkedHashMap();
         map.put(new Integer(SimpleAclEntry.NOTHING),
             getApplicationContext().getMessage("select.none", null, "None",
                 request.getLocale()));
         map.put(new Integer(SimpleAclEntry.ADMINISTRATION),
             getApplicationContext().getMessage("select.administer", null,
                 "Administer", request.getLocale()));
         map.put(new Integer(SimpleAclEntry.READ),
             getApplicationContext().getMessage("select.read", null, "Read",
                 request.getLocale()));
         map.put(new Integer(SimpleAclEntry.DELETE),
             getApplicationContext().getMessage("select.delete", null, "Delete",
                 request.getLocale()));
         map.put(new Integer(SimpleAclEntry.READ_WRITE_DELETE),
             getApplicationContext().getMessage("select.readWriteDelete", null,
                 "Read+Write+Delete", request.getLocale()));
 
         return map;
     }
 
     private Map listRecipients(HttpServletRequest request) {
         Map map = new LinkedHashMap();
         map.put("",
             getApplicationContext().getMessage("select.pleaseSelect", null,
                 "-- please select --", request.getLocale()));
 
         Iterator recipientsIter = contactManager.getAllRecipients().iterator();
 
         while (recipientsIter.hasNext()) {
             String recipient = (String) recipientsIter.next();
             map.put(recipient, recipient);
         }
 
         return map;
     }
 }