/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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 org.apache.shiro.samples.sprhib.web;
  
  import org.apache.shiro.authz.annotation.RequiresPermissions;
  import org.apache.shiro.samples.sprhib.model.User;
  import org.apache.shiro.samples.sprhib.service.UserService;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.Model;
  import org.springframework.util.Assert;
  import org.springframework.validation.BindingResult;
  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;
  
  /**
   * Web MVC controller that handles operations related to managing users, such as editing them and deleting them. 
   */
  @Controller
  public class ManageUsersController {
  
      private EditUserValidatorValidator.html#EditUserValidator">EditUserValidator editUserValidator = new EditUserValidator();
  
      private UserService userService;
  
      @Autowired
      public void setUserService(UserService userService) {
          this.userService = userService;
      }
  
      @RequestMapping("/manageUsers")
      @RequiresPermissions("user:manage")
      public void manageUsers(Model model) {
          model.addAttribute("users", userService.getAllUsers());
      }
  
      @RequestMapping(value="/editUser",method= RequestMethod.GET)
      @RequiresPermissions("user:edit")
      public String showEditUserForm(Model model, @RequestParam Long userId, @ModelAttribute EditUserCommand command) {
  
          User user = userService.getUser( userId );
          command.setUserId(userId);
          command.setUsername(user.getUsername());
          command.setEmail(user.getEmail());
          return "editUser";
      }
  
      @RequestMapping(value="/editUser",method= RequestMethod.POST)
      @RequiresPermissions("user:edit")
      public String editUser(Model model, @RequestParam Long userId, @ModelAttribute EditUserCommand command, BindingResult errors) {
          editUserValidator.validate( command, errors );
  
          if( errors.hasErrors() ) {
              return "editUser";
          }
  
          User user = userService.getUser( userId );
          command.updateUser( user );
  
          userService.updateUser( user );
  
          return "redirect:/s/manageUsers";
      }
  
      @RequestMapping("/deleteUser")
      @RequiresPermissions("user:delete")
      public String deleteUser(@RequestParam Long userId) {
          Assert.isTrue( userId != 1, "Cannot delete admin user" );
          userService.deleteUser( userId );
          return "redirect:/s/manageUsers";
      }
  
  }