/*
    *    Copyright 2010-2026 the original author or authors.
    *
    *    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
    *
    *       https://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.mybatis.jpetstore.web.controllers;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  
  import javax.servlet.http.HttpSession;
  
  import org.mybatis.jpetstore.domain.Account;
  import org.mybatis.jpetstore.domain.Product;
  import org.mybatis.jpetstore.service.AccountService;
  import org.mybatis.jpetstore.service.CatalogService;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.Model;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.ModelAttribute;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  
  /**
   * The Class AccountController.
   */
  @Controller
  @RequestMapping("/account")
  public class AccountController {
  
    /** The signon view. */
    private static final String SIGNON_VIEW = "account/SignonForm";
    /** The new account view. */
    private static final String NEW_ACCOUNT_VIEW = "account/NewAccountForm";
    /** The edit account view. */
    private static final String EDIT_ACCOUNT_VIEW = "account/EditAccountForm";
  
    /** The language list. */
    private static final List<String> LANGUAGE_LIST = Collections.unmodifiableList(Arrays.asList("english", "japanese"));
    /** The category list. */
    private static final List<String> CATEGORY_LIST = Collections
        .unmodifiableList(Arrays.asList("FISH", "DOGS", "REPTILES", "CATS", "BIRDS"));
  
    /** The account service. */
    @Autowired
    private AccountService accountService;
    /** The catalog service. */
    @Autowired
    private CatalogService catalogService;
  
    /**
     * Signon form.
     *
     * @return the string
     */
    @GetMapping({ "", "/" })
    public String signonForm() {
      return SIGNON_VIEW;
    }
  
    /**
     * Signon.
     *
     * @param username
     *          the username
     * @param password
     *          the password
     * @param session
     *          the session
     * @param model
     *          the model
     *
     * @return the string
     */
    @PostMapping("/signon")
    public String signon(@RequestParam("username") String username, @RequestParam("password") String password,
        HttpSession session, Model model) {
      Account account = accountService.getAccount(username, password);
      if (account == null) {
        model.addAttribute("message", "Invalid username or password.  Signon failed.");
        return SIGNON_VIEW;
      }
      account.setPassword(null);
      List<Product> myList = catalogService.getProductListByCategory(account.getFavouriteCategoryId());
      session.setAttribute("accountBean", new AccountSession(account, myList, true));
      return "redirect:/catalog";
   }
 
   /**
    * Signoff.
    *
    * @param session
    *          the session
    *
    * @return the string
    */
   @GetMapping("/signoff")
   public String signoff(HttpSession session) {
     session.invalidate();
     return "redirect:/catalog";
   }
 
   /**
    * New account form.
    *
    * @param model
    *          the model
    *
    * @return the string
    */
   @GetMapping("/new")
   public String newAccountForm(Model model) {
     model.addAttribute("languages", LANGUAGE_LIST);
     model.addAttribute("categories", CATEGORY_LIST);
     model.addAttribute("account", new Account());
     return NEW_ACCOUNT_VIEW;
   }
 
   /**
    * New account.
    *
    * @param account
    *          the account
    *
    * @return the string
    */
   @PostMapping("/new")
   public String newAccount(@ModelAttribute Account account) {
     accountService.insertAccount(account);
     return "redirect:/catalog";
   }
 
   /**
    * Edit account form.
    *
    * @param session
    *          the session
    * @param model
    *          the model
    *
    * @return the string
    */
   @GetMapping("/edit")
   public String editAccountForm(HttpSession session, Model model) {
     AccountSession accountSession = (AccountSession) session.getAttribute("accountBean");
     if (accountSession != null) {
       model.addAttribute("account", accountSession.getAccount());
     }
     model.addAttribute("languages", LANGUAGE_LIST);
     model.addAttribute("categories", CATEGORY_LIST);
     return EDIT_ACCOUNT_VIEW;
   }
 
   /**
    * Edit account.
    *
    * @param account
    *          the account
    * @param session
    *          the session
    *
    * @return the string
    */
   @PostMapping("/edit")
   public String editAccount(@ModelAttribute Account account, HttpSession session) {
     accountService.updateAccount(account);
     Account updatedAccount = accountService.getAccount(account.getUsername());
     List<Product> myList = catalogService.getProductListByCategory(updatedAccount.getFavouriteCategoryId());
     session.setAttribute("accountBean", new AccountSession(updatedAccount, myList, true));
     return "redirect:/account/edit";
   }
 
   /**
    * Inner class to hold account session data, compatible with JSP ${sessionScope.accountBean.*} references.
    */
   public static class AccountSession implements java.io.Serializable {
     /** The serial version uid. */
     private static final long serialVersionUID = 1L;
     /** The account. */
     private final Account account;
     /** The my list. */
     private final List<Product> myList;
     /** The authenticated. */
     private final boolean authenticated;
 
     /**
      * Instantiates a new account session.
      *
      * @param account
      *          the account
      * @param myList
      *          the my list
      * @param authenticated
      *          the authenticated
      */
     public AccountSession(Account account, List<Product> myList, boolean authenticated) {
       this.account = account;
       this.myList = myList;
       this.authenticated = authenticated;
     }
 
     /**
      * Gets the account.
      *
      * @return the account
      */
     public Account getAccount() {
       return account;
     }
 
     /**
      * Gets the my list.
      *
      * @return the my list
      */
     public List<Product> getMyList() {
       return myList;
     }
 
     /**
      * Checks if is authenticated.
      *
      * @return true, if successful
      */
     public boolean isAuthenticated() {
       return authenticated && account != null && account.getUsername() != null;
     }
   }
 }