src/java/org/mxchange/addressbook/beans/addressbook/AddressbookWebBean.java

   1 /*
   2  * Copyright (C) 2015 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.addressbook.beans.addressbook;
  18
  19 import java.text.MessageFormat;
  20 import java.util.ArrayList;
  21 import java.util.Calendar;
  22 import java.util.Collections;
  23 import java.util.GregorianCalendar;
  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.addressbook.beans.login.UserLoginWebController;
  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.addressbook.model.addressbook.status.AddressbokStatus;
  45 import org.mxchange.jusercore.events.login.UserLoggedInEvent;
  46 import org.mxchange.jusercore.model.user.User;
  47
  48 /**
  49  * An address book bean (controller)
  50  * <p>
  51  * @author Roland Haeder<roland@mxchange.org>
  52  */
  53 @Named ("addressbookController")
  54 @SessionScoped
  55 public class AddressbookWebBean implements AddressbookWebController {
  56
  57         /**
  58          * Map for count of user's shared addresses
  59          */
  60         private static ConcurrentMap<User, Integer> countSharesList;
  61
  62         /**
  63          * Serial number
  64          */
  65         private static final long serialVersionUID = 185_781_756_712_969L;
  66
  67         /**
  68          * Address book instance
  69          */
  70         private Addressbook addressbook;
  71
  72         /**
  73          * Remote address book bean
  74          */
  75         private AddressbookSessionBeanRemote addressbookBean;
  76
  77         /**
  78          * When this address book has been created
  79          */
  80         private Calendar addressbookCreated;
  81
  82         /**
  83          * Address book id number (from URL for example)
  84          */
  85         private Long addressbookId;
  86
  87         /**
  88          * Name of the address book
  89          */
  90         private String addressbookName;
  91
  92         /**
  93          * Who owns this address book
  94          */
  95         private User addressbookUser;
  96
  97         /**
  98          * Login controller
  99          */
 100         @Inject
 101         private UserLoginWebController loginController;
 102
 103         /**
 104          * A list of all user's address books
 105          */
 106         private List<Addressbook> usersAddressbooks;
 107
 108         /**
 109          * Default constructor
 110          */
 111         public AddressbookWebBean () {
 112                 // Try it
 113                 try {
 114                         // Get initial context
 115                         Context context = new InitialContext();
 116
 117                         // Try to lookup
 118                         this.addressbookBean = (AddressbookSessionBeanRemote) context.lookup("ejb/stateless-addressbook"); //NOI18N
 119                 } catch (final NamingException e) {
 120                         // Throw again
 121                         throw new FaceletException(e);
 122                 }
 123
 124                 // Init list
 125                 AddressbookWebBean.countSharesList = new ConcurrentHashMap<>(0);
 126         }
 127
 128         @Override
 129         public String addAddressbook () {
 130                 // Is this name already used?
 131                 if (!this.loginController.isUserLoggedIn()) {
 132                         // Not logged in
 133                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 134                 } else if (this.getAddressbookName() == null) {
 135                         // Address book name is null
 136                         throw new NullPointerException("addressbookName is null"); //NOI18N
 137                 } else if (this.getAddressbookName().isEmpty()) {
 138                         // Address book name is empty
 139                         throw new IllegalStateException("addressbookName is empty."); //NOI18N
 140                 } else if (this.isAddressbookNameUsed(this.getAddressbookName())) {
 141                         // Already used by this user
 142                         throw new FaceletException(MessageFormat.format("Address book name {0} already used.", this.getAddressbookName())); //NOI18N
 143                 }
 144
 145                 // Create address book instance with name
 146                 Addressbook book = new UserAddressbook(this.getAddressbookName());
 147
 148                 // Set default status to UNLOCKED and owner
 149                 book.setAddressbookStatus(AddressbokStatus.UNLOCKED);
 150                 book.setAddressbookUser(this.loginController.getLoggedInUser());
 151                 book.setAddressbookCreated(new GregorianCalendar());
 152
 153                 try {
 154                         // Register this address book
 155                         Addressbook updatedAddressbook = this.addressbookBean.createAddressbook(book);
 156
 157                         // Remove name
 158                         this.setAddressbookName(null);
 159
 160                         // Add address book entry to list
 161                         this.usersAddressbooks.add(updatedAddressbook);
 162
 163                         // All fine
 164                         return "login_own_addressbooks"; //NOI18N
 165                 } catch (final AddressbookNameAlreadyUsedException ex) {
 166                         // Throw again as cause
 167                         throw new FaceletException(ex);
 168                 }
 169         }
 170
 171         @Override
 172         public void afterAddressbookLoadedEvent (final @Observes AddressbookLoadedEvent event) {
 173                 // event should not be null
 174                 if (null == event) {
 175                         // Throw NPE
 176                         throw new NullPointerException("event is null"); //NOI18N
 177                 } else if (event.getAddressbook() == null) {
 178                         // Throw NPE again
 179                         throw new NullPointerException("event.addressbook is null"); //NOI18N
 180                 } else if (event.getAddressbook().getAddressbookId() == null) {
 181                         // And again a NPE
 182                         throw new NullPointerException("event.addressbook.addressbookId is null"); //NOI18N
 183                 } else if (event.getAddressbook().getAddressbookId() < 1) {
 184                         // Invalid id number
 185                         throw new IllegalArgumentException(MessageFormat.format("Address book instance {0} has invalid id number: {1}", event.getAddressbook(), event.getAddressbook().getAddressbookId())); //NOI18N
 186                 } else if (event.getAddressbook().getAddressbookUser() == null) {
 187                         // One more NPE ...
 188                         throw new NullPointerException("event.addressbook.addressbookUser is null"); //NOI18N
 189                 }
 190
 191                 // Get address book instance
 192                 Addressbook book = event.getAddressbook();
 193
 194                 // Set address book data
 195                 this.setAddressbookId(book.getAddressbookId());
 196                 this.setAddressbookName(book.getAddressbookName());
 197                 this.setAddressbookUser(book.getAddressbookUser());
 198                 this.setAddressbookCreated(book.getAddressbookCreated());
 199
 200                 // And instance ...
 201                 this.setAddressbook(book);
 202         }
 203
 204         @Override
 205         public void afterLoginEvent (final @Observes UserLoggedInEvent event) {
 206                 // Is the user logged in?
 207                 if (null == event) {
 208                         // Is null
 209                         throw new NullPointerException("event is null"); //NOI18N
 210                 } else if (event.getUser() == null) {
 211                         // user is null
 212                         throw new NullPointerException("event.user is null"); //NOI18N
 213                 } else if (!event.getUser().equals(this.loginController.getLoggedInUser())) {
 214                         // Not matching
 215                         throw new IllegalStateException("event.user and loginController.loggedInUser don't match."); //NOI18N
 216                 } else if (!this.loginController.isUserLoggedIn()) {
 217                         // Not logged in
 218                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 219                 }
 220
 221                 // Init user's address book list
 222                 this.initAddressbookList();
 223         }
 224
 225         @Override
 226         public List<Addressbook> allAddressbooks () {
 227                 // Is the user logged in?
 228                 if (!this.loginController.isUserLoggedIn()) {
 229                         // Not logged in
 230                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 231                 }
 232
 233                 return Collections.unmodifiableList(this.usersAddressbooks);
 234         }
 235
 236         @Override
 237         public List<AddressbookEntry> allEntries (final Addressbook addressbook) {
 238                 // Is the user logged in?
 239                 if (!this.loginController.isUserLoggedIn()) {
 240                         // Not logged in
 241                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 242                 }
 243
 244                 // Ask the bean
 245                 return this.addressbookBean.allEntries(addressbook);
 246         }
 247
 248         @Override
 249         public int allEntriesSize (final Addressbook addressbook) {
 250                 // Ask the bean
 251                 return this.allEntries(addressbook).size();
 252         }
 253
 254         @Override
 255         public List<User> allUsersNotSharing () {
 256                 // Is the user logged in?
 257                 if (!this.loginController.isUserLoggedIn()) {
 258                         // Not logged in
 259                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 260                 }
 261
 262                 // Call EJB
 263                 return this.addressbookBean.allUsersNotSharing(this.loginController.getLoggedInUser(), this.getAddressbook());
 264         }
 265
 266         @Override
 267         public Integer countAllUserSharedAddressbooks (final User user) {
 268                 // Is there cache?
 269                 if (AddressbookWebBean.countSharesList.containsKey(user)) {
 270                         // Return it instead
 271                         return AddressbookWebBean.countSharesList.get(user);
 272                 }
 273
 274                 // Call EJB ("expensive")
 275                 Integer count = this.addressbookBean.countAllUserSharedAddressbooks(user);
 276
 277                 // Add to list
 278                 AddressbookWebBean.countSharesList.put(user, count);
 279
 280                 // Return it
 281                 return count;
 282         }
 283
 284         @Override
 285         public Addressbook getAddressbook () {
 286                 return this.addressbook;
 287         }
 288
 289         @Override
 290         public void setAddressbook (final Addressbook addressbook) {
 291                 this.addressbook = addressbook;
 292         }
 293
 294         @Override
 295         public Calendar getAddressbookCreated () {
 296                 return this.addressbookCreated;
 297         }
 298
 299         @Override
 300         public void setAddressbookCreated (final Calendar addressbookCreated) {
 301                 this.addressbookCreated = addressbookCreated;
 302         }
 303
 304         @Override
 305         public Long getAddressbookId () {
 306                 return this.addressbookId;
 307         }
 308
 309         @Override
 310         public void setAddressbookId (final Long addressbookId) {
 311                 this.addressbookId = addressbookId;
 312         }
 313
 314         @Override
 315         public String getAddressbookName () {
 316                 return this.addressbookName;
 317         }
 318
 319         @Override
 320         public void setAddressbookName (final String addressbookName) {
 321                 this.addressbookName = addressbookName;
 322         }
 323
 324         @Override
 325         public User getAddressbookUser () {
 326                 return this.addressbookUser;
 327         }
 328
 329         @Override
 330         public void setAddressbookUser (final User addressbookUser) {
 331                 this.addressbookUser = addressbookUser;
 332         }
 333
 334         @Override
 335         public boolean hasCreatedAddressbooks () {
 336                 // Is the user logged in?
 337                 if (!this.loginController.isUserLoggedIn()) {
 338                         // Not logged in
 339                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 340                 }
 341
 342                 // Check if the list is filled
 343                 return (!this.usersAddressbooks.isEmpty());
 344         }
 345
 346         @PostConstruct
 347         public void init () {
 348                 // Init list
 349                 this.usersAddressbooks = new ArrayList<>(0);
 350
 351                 // Is the user logged-in?
 352                 if (this.loginController.isUserLoggedIn()) {
 353                         // Initialize list
 354                         this.initAddressbookList();
 355                 }
 356
 357                 // TODO Initialize list from bean with just one call
 358                 //this.addressbookBean.getUserCountMap()
 359         }
 360
 361         @Override
 362         public boolean isAddressbookNameUsed (final String addressbookName) {
 363                 // Is it zero size?
 364                 if (null == addressbookName) {
 365                         // Is null
 366                         throw new NullPointerException("addressbookName is null"); //NOI18N
 367                 } else if (this.usersAddressbooks.isEmpty()) {
 368                         // Not found!
 369                         return false;
 370                 }
 371
 372                 // Default is not found
 373                 boolean isFound = false;
 374
 375                 // Check all entries
 376                 for (final Addressbook book : this.usersAddressbooks) {
 377                         // Is the name same?
 378                         if (book.getAddressbookName().equals(addressbookName)) {
 379                                 // Found a match
 380                                 isFound = true;
 381                                 break;
 382                         }
 383                 }
 384
 385                 // Return status
 386                 return isFound;
 387         }
 388
 389         @Override
 390         public boolean isOtherAddressbook () {
 391                 // Just call the other method and invert it
 392                 return (!this.isOwnAddressbook());
 393         }
 394
 395         @Override
 396         public boolean isOwnAddressbook () {
 397                 // Is the user logged in?
 398                 if (!this.loginController.isUserLoggedIn()) {
 399                         // No, then no own address book
 400                         return false;
 401                 }
 402
 403                 // Is same user?
 404                 return Objects.equals(this.getAddressbookUser(), this.loginController.getLoggedInUser());
 405         }
 406
 407         /**
 408          * Initializes the user user's address book list
 409          */
 410         private void initAddressbookList () {
 411                 // Get user instance
 412                 User user = this.loginController.getLoggedInUser();
 413
 414                 // Fill list with entries
 415                 this.usersAddressbooks = this.addressbookBean.getUsersAddressbookList(user);
 416         }
 417 }