src/java/org/mxchange/jjobs/beans/addressbook/AddressbookWebSessionBean.java

   1 /*
   2  * Copyright (C) 2016 Roland Haeder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.jjobs.beans.addressbook;
  18
  19 import java.text.MessageFormat;
  20 import java.util.Calendar;
  21 import java.util.Collections;
  22 import java.util.GregorianCalendar;
  23 import java.util.LinkedList;
  24 import java.util.List;
  25 import java.util.Objects;
  26 import java.util.concurrent.ConcurrentHashMap;
  27 import java.util.concurrent.ConcurrentMap;
  28 import javax.annotation.PostConstruct;
  29 import javax.enterprise.context.SessionScoped;
  30 import javax.enterprise.event.Observes;
  31 import javax.faces.view.facelets.FaceletException;
  32 import javax.inject.Inject;
  33 import javax.inject.Named;
  34 import javax.naming.Context;
  35 import javax.naming.InitialContext;
  36 import javax.naming.NamingException;
  37 import org.mxchange.jjobs.beans.login.UserLoginWebSessionController;
  38 import org.mxchange.addressbook.events.addressbook.AddressbookLoadedEvent;
  39 import org.mxchange.addressbook.exceptions.AddressbookNameAlreadyUsedException;
  40 import org.mxchange.addressbook.model.addressbook.Addressbook;
  41 import org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote;
  42 import org.mxchange.addressbook.model.addressbook.UserAddressbook;
  43 import org.mxchange.addressbook.model.addressbook.entry.AddressbookEntry;
  44 import org.mxchange.jusercore.events.login.UserLoggedInEvent;
  45 import org.mxchange.jusercore.model.user.User;
  46
  47 /**
  48  * An address book bean (controller)
  49  * <p>
  50  * @author Roland Haeder<roland@mxchange.org>
  51  */
  52 @Named ("addressbookController")
  53 @SessionScoped
  54 public class AddressbookWebSessionBean implements AddressbookWebSessionController {
  55
  56         /**
  57          * Map for count of user's shared addresses
  58          */
  59         private static ConcurrentMap<User, Integer> countSharesList;
  60
  61         /**
  62          * Serial number
  63          */
  64         private static final long serialVersionUID = 185_781_756_712_969L;
  65
  66         /**
  67          * Address book instance
  68          */
  69         private Addressbook addressbook;
  70
  71         /**
  72          * Remote address book bean
  73          */
  74         private AddressbookSessionBeanRemote addressbookBean;
  75
  76         /**
  77          * When this address book has been created
  78          */
  79         private Calendar addressbookCreated;
  80
  81         /**
  82          * Address book id number (from URL for example)
  83          */
  84         private Long addressbookId;
  85
  86         /**
  87          * Name of the address book
  88          */
  89         private String addressbookName;
  90
  91         /**
  92          * Who owns this address book
  93          */
  94         private User addressbookUser;
  95
  96         /**
  97          * Login controller
  98          */
  99         @Inject
 100         private UserLoginWebSessionController loginController;
 101
 102         /**
 103          * A list of all user's address books
 104          */
 105         private List<Addressbook> usersAddressbooks;
 106
 107         /**
 108          * Default constructor
 109          */
 110         public AddressbookWebSessionBean () {
 111                 // Try it
 112                 try {
 113                         // Get initial context
 114                         Context context = new InitialContext();
 115
 116                         // Try to lookup
 117                         this.addressbookBean = (AddressbookSessionBeanRemote) context.lookup("ejb/stateless-addressbook"); //NOI18N
 118                 } catch (final NamingException e) {
 119                         // Throw again
 120                         throw new FaceletException(e);
 121                 }
 122
 123                 // Init list
 124                 AddressbookWebSessionBean.countSharesList = new ConcurrentHashMap<>(0);
 125         }
 126
 127         @Override
 128         public String addAddressbook () {
 129                 // Is this name already used?
 130                 if (!this.loginController.isUserLoggedIn()) {
 131                         // Not logged in
 132                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 133                 } else if (this.getAddressbookName() == null) {
 134                         // Address book name is null
 135                         throw new NullPointerException("addressbookName is null"); //NOI18N
 136                 } else if (this.getAddressbookName().isEmpty()) {
 137                         // Address book name is empty
 138                         throw new IllegalStateException("addressbookName is empty."); //NOI18N
 139                 } else if (this.isAddressbookNameUsed(this.getAddressbookName())) {
 140                         // Already used by this user
 141                         throw new FaceletException(MessageFormat.format("Address book name {0} already used.", this.getAddressbookName())); //NOI18N
 142                 }
 143
 144                 // Create address book instance with name
 145                 Addressbook book = new UserAddressbook(this.getAddressbookName(), this.loginController.getLoggedInUser(), new GregorianCalendar());
 146
 147                 try {
 148                         // Register this address book
 149                         Addressbook updatedAddressbook = this.addressbookBean.createAddressbook(book);
 150
 151                         // Remove name
 152                         this.setAddressbookName(null);
 153
 154                         // Add address book entry to list
 155                         this.usersAddressbooks.add(updatedAddressbook);
 156
 157                         // All fine
 158                         return "login_own_addressbooks"; //NOI18N
 159                 } catch (final AddressbookNameAlreadyUsedException ex) {
 160                         // Throw again as cause
 161                         throw new FaceletException(ex);
 162                 }
 163         }
 164
 165         @Override
 166         public void afterAddressbookLoadedEvent (final @Observes AddressbookLoadedEvent event) {
 167                 // event should not be null
 168                 if (null == event) {
 169                         // Throw NPE
 170                         throw new NullPointerException("event is null"); //NOI18N
 171                 } else if (event.getAddressbook() == null) {
 172                         // Throw NPE again
 173                         throw new NullPointerException("event.addressbook is null"); //NOI18N
 174                 } else if (event.getAddressbook().getAddressbookId() == null) {
 175                         // And again a NPE
 176                         throw new NullPointerException("event.addressbook.addressbookId is null"); //NOI18N
 177                 } else if (event.getAddressbook().getAddressbookId() < 1) {
 178                         // Invalid id number
 179                         throw new IllegalArgumentException(MessageFormat.format("Address book instance {0} has invalid id number: {1}", event.getAddressbook(), event.getAddressbook().getAddressbookId())); //NOI18N
 180                 } else if (event.getAddressbook().getAddressbookUser() == null) {
 181                         // One more NPE ...
 182                         throw new NullPointerException("event.addressbook.addressbookUser is null"); //NOI18N
 183                 }
 184
 185                 // Get address book instance
 186                 Addressbook book = event.getAddressbook();
 187
 188                 // Set address book data
 189                 this.setAddressbookId(book.getAddressbookId());
 190                 this.setAddressbookName(book.getAddressbookName());
 191                 this.setAddressbookUser(book.getAddressbookUser());
 192                 this.setAddressbookCreated(book.getAddressbookCreated());
 193
 194                 // And instance ...
 195                 this.setAddressbook(book);
 196         }
 197
 198         @Override
 199         public void afterLoginEvent (final @Observes UserLoggedInEvent event) {
 200                 // Is the user logged in?
 201                 if (null == event) {
 202                         // Is null
 203                         throw new NullPointerException("event is null"); //NOI18N
 204                 } else if (event.getUser() == null) {
 205                         // user is null
 206                         throw new NullPointerException("event.user is null"); //NOI18N
 207                 } else if (!event.getUser().equals(this.loginController.getLoggedInUser())) {
 208                         // Not matching
 209                         throw new IllegalStateException("event.user and loginController.loggedInUser don't match."); //NOI18N
 210                 } else if (!this.loginController.isUserLoggedIn()) {
 211                         // Not logged in
 212                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 213                 }
 214
 215                 // Init user's address book list
 216                 this.initAddressbookList();
 217         }
 218
 219         @Override
 220         public List<Addressbook> allAddressbooks () {
 221                 // Is the user logged in?
 222                 if (!this.loginController.isUserLoggedIn()) {
 223                         // Not logged in
 224                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 225                 }
 226
 227                 return Collections.unmodifiableList(this.usersAddressbooks);
 228         }
 229
 230         @Override
 231         public List<AddressbookEntry> allEntries (final Addressbook addressbook) {
 232                 // Is the user logged in?
 233                 if (!this.loginController.isUserLoggedIn()) {
 234                         // Not logged in
 235                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 236                 }
 237
 238                 // Ask the bean
 239                 return this.addressbookBean.allEntries(addressbook);
 240         }
 241
 242         @Override
 243         public int allEntriesSize (final Addressbook addressbook) {
 244                 // Ask the bean
 245                 return this.allEntries(addressbook).size();
 246         }
 247
 248         @Override
 249         public List<User> allUsersNotSharing () {
 250                 // Is the user logged in?
 251                 if (!this.loginController.isUserLoggedIn()) {
 252                         // Not logged in
 253                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 254                 }
 255
 256                 // Call EJB
 257                 return this.addressbookBean.allUsersNotSharing(this.loginController.getLoggedInUser(), this.getAddressbook());
 258         }
 259
 260         @Override
 261         public Integer countAllUserSharedAddressbooks (final User user) {
 262                 // Is there cache?
 263                 if (AddressbookWebSessionBean.countSharesList.containsKey(user)) {
 264                         // Return it instead
 265                         return AddressbookWebSessionBean.countSharesList.get(user);
 266                 }
 267
 268                 // Call EJB ("expensive")
 269                 Integer count = this.addressbookBean.countAllUserSharedAddressbooks(user);
 270
 271                 // Add to list
 272                 AddressbookWebSessionBean.countSharesList.put(user, count);
 273
 274                 // Return it
 275                 return count;
 276         }
 277
 278         @Override
 279         public Addressbook getAddressbook () {
 280                 return this.addressbook;
 281         }
 282
 283         @Override
 284         public void setAddressbook (final Addressbook addressbook) {
 285                 this.addressbook = addressbook;
 286         }
 287
 288         @Override
 289         public Calendar getAddressbookCreated () {
 290                 return this.addressbookCreated;
 291         }
 292
 293         @Override
 294         public void setAddressbookCreated (final Calendar addressbookCreated) {
 295                 this.addressbookCreated = addressbookCreated;
 296         }
 297
 298         @Override
 299         public Long getAddressbookId () {
 300                 return this.addressbookId;
 301         }
 302
 303         @Override
 304         public void setAddressbookId (final Long addressbookId) {
 305                 this.addressbookId = addressbookId;
 306         }
 307
 308         @Override
 309         public String getAddressbookName () {
 310                 return this.addressbookName;
 311         }
 312
 313         @Override
 314         public void setAddressbookName (final String addressbookName) {
 315                 this.addressbookName = addressbookName;
 316         }
 317
 318         @Override
 319         public User getAddressbookUser () {
 320                 return this.addressbookUser;
 321         }
 322
 323         @Override
 324         public void setAddressbookUser (final User addressbookUser) {
 325                 this.addressbookUser = addressbookUser;
 326         }
 327
 328         @Override
 329         public boolean hasCreatedAddressbooks () {
 330                 // Is the user logged in?
 331                 if (!this.loginController.isUserLoggedIn()) {
 332                         // Not logged in
 333                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 334                 }
 335
 336                 // Check if the list is filled
 337                 return (!this.usersAddressbooks.isEmpty());
 338         }
 339
 340         @PostConstruct
 341         public void init () {
 342                 // Init list
 343                 this.usersAddressbooks = new LinkedList<>();
 344
 345                 // Is the user logged-in?
 346                 if (this.loginController.isUserLoggedIn()) {
 347                         // Initialize list
 348                         this.initAddressbookList();
 349                 }
 350
 351                 // TODO Initialize list from bean with just one call
 352                 //this.addressbookBean.getUserCountMap()
 353         }
 354
 355         @Override
 356         public boolean isAddressbookNameUsed (final String addressbookName) {
 357                 // Is it zero size?
 358                 if (null == addressbookName) {
 359                         // Is null
 360                         throw new NullPointerException("addressbookName is null"); //NOI18N
 361                 } else if (this.usersAddressbooks.isEmpty()) {
 362                         // Not found!
 363                         return false;
 364                 }
 365
 366                 // Default is not found
 367                 boolean isFound = false;
 368
 369                 // Check all entries
 370                 for (final Addressbook book : this.usersAddressbooks) {
 371                         // Is the name same?
 372                         if (book.getAddressbookName().equals(addressbookName)) {
 373                                 // Found a match
 374                                 isFound = true;
 375                                 break;
 376                         }
 377                 }
 378
 379                 // Return status
 380                 return isFound;
 381         }
 382
 383         @Override
 384         public boolean isOtherAddressbook () {
 385                 // Just call the other method and invert it
 386                 return (!this.isOwnAddressbook());
 387         }
 388
 389         @Override
 390         public boolean isOwnAddressbook () {
 391                 // Is the user logged in?
 392                 if (!this.loginController.isUserLoggedIn()) {
 393                         // No, then no own address book
 394                         throw new IllegalStateException("isOwnAddressbook() has been invoked for a guest account"); //NOI18N
 395                 }
 396
 397                 // Is same user?
 398                 return Objects.equals(this.getAddressbookUser(), this.loginController.getLoggedInUser());
 399         }
 400
 401         @Override
 402         public boolean isAddressbookLoaded () {
 403                 return ((this.getAddressbookId() instanceof Long)
 404                                 && (this.getAddressbookName() instanceof String)
 405                                 && (!this.getAddressbookName().isEmpty())
 406                                 && (this.getAddressbookUser() instanceof User));
 407         }
 408
 409         /**
 410          * Initializes the user user's address book list
 411          */
 412         private void initAddressbookList () {
 413                 // Get user instance
 414                 User user = this.loginController.getLoggedInUser();
 415
 416                 // Fill list with entries
 417                 this.usersAddressbooks = this.addressbookBean.getUsersAddressbookList(user);
 418         }
 419 }