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.concurrent.ConcurrentHashMap;
  26 import java.util.concurrent.ConcurrentMap;
  27 import javax.annotation.PostConstruct;
  28 import javax.enterprise.context.SessionScoped;
  29 import javax.enterprise.event.Observes;
  30 import javax.faces.view.facelets.FaceletException;
  31 import javax.inject.Inject;
  32 import javax.inject.Named;
  33 import javax.naming.Context;
  34 import javax.naming.InitialContext;
  35 import javax.naming.NamingException;
  36 import org.mxchange.addressbook.beans.login.UserLoginWebController;
  37 import org.mxchange.addressbook.events.addressbook.AddressbookLoadedEvent;
  38 import org.mxchange.addressbook.exceptions.AddressbookNameAlreadyUsedException;
  39 import org.mxchange.addressbook.model.addressbook.Addressbook;
  40 import org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote;
  41 import org.mxchange.addressbook.model.addressbook.UserAddressbook;
  42 import org.mxchange.addressbook.model.addressbook.entry.AddressbookEntry;
  43 import org.mxchange.addressbook.model.addressbook.shared.ShareableAddressbook;
  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          * Remote address book bean
  69          */
  70         private AddressbookSessionBeanRemote addressbookBean;
  71
  72         /**
  73          * When this address book has been created
  74          */
  75         private Calendar addressbookCreated;
  76
  77         /**
  78          * Address book id number (from URL for example)
  79          */
  80         private Long addressbookId;
  81
  82         /**
  83          * Name of the address book
  84          */
  85         private String addressbookName;
  86
  87         /**
  88          * Who owns this address book
  89          */
  90         private User addressbookUser;
  91
  92         /**
  93          * Login controller
  94          */
  95         @Inject
  96         private UserLoginWebController loginController;
  97
  98         /**
  99          * A list of all user's shared (with others) address books
 100          */
 101         private List<ShareableAddressbook> sharedAddressbooks;
 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 addressbook = new UserAddressbook(this.getAddressbookName());
 147
 148                 // Set default status to UNLOCKED and owner
 149                 addressbook.setAddressbookStatus(AddressbokStatus.UNLOCKED);
 150                 addressbook.setAddressbookUser(this.loginController.getLoggedInUser());
 151                 addressbook.setAddressbookCreated(new GregorianCalendar());
 152
 153                 try {
 154                         // Register this address book
 155                         Addressbook updatedAddressbook = this.addressbookBean.createAddressbook(addressbook);
 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");
 177                 } else if (event.getAddressbook() == null) {
 178                         // Throw NPE again
 179                         throw new NullPointerException("event.addressbook is null");
 180                 } else if (event.getAddressbook().getAddressbookId() == null) {
 181                         // And again a NPE
 182                         throw new NullPointerException("event.addressbook.addressbookId is null");
 183                 } else if (event.getAddressbook().getAddressbookId() < 1) {
 184                         // Invalid id number
 185                         throw new IllegalArgumentException("Address book instance " + event.getAddressbook() + " has invalid id number: " + event.getAddressbook().getAddressbookId());
 186                 } else if (event.getAddressbook().getAddressbookUser() == null) {
 187                         // One more NPE ...
 188                         throw new NullPointerException("event.addressbook.addressbookUser is null");
 189                 }
 190
 191                 // Get address book instance
 192                 Addressbook addressbook = event.getAddressbook();
 193
 194                 // Set address book data
 195                 this.setAddressbookId(addressbook.getAddressbookId());
 196                 this.setAddressbookName(addressbook.getAddressbookName());
 197                 this.setAddressbookUser(addressbook.getAddressbookUser());
 198                 this.setAddressbookCreated(addressbook.getAddressbookCreated());
 199         }
 200
 201         @Override
 202         public void afterLoginEvent (final @Observes UserLoggedInEvent event) {
 203                 // Is the user logged in?
 204                 if (null == event) {
 205                         // Is null
 206                         throw new NullPointerException("event is null");
 207                 } else if (event.getUser() == null) {
 208                         // user is null
 209                         throw new NullPointerException("event.user is null");
 210                 } else if (!event.getUser().equals(this.loginController.getLoggedInUser())) {
 211                         // Not matching
 212                         throw new IllegalStateException("event.user and loginController.loggedInUser don't match.");
 213                 } else if (!this.loginController.isUserLoggedIn()) {
 214                         // Not logged in
 215                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 216                 }
 217
 218                 // Init user's address book list
 219                 this.initAddressbookList();
 220         }
 221
 222         @Override
 223         public List<Addressbook> allAddressbooks () {
 224                 // Is the user logged in?
 225                 if (!this.loginController.isUserLoggedIn()) {
 226                         // Not logged in
 227                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 228                 }
 229
 230                 return Collections.unmodifiableList(this.usersAddressbooks);
 231         }
 232
 233         @Override
 234         public List<AddressbookEntry> allEntries (final Addressbook addressbook) {
 235                 // Is the user logged in?
 236                 if (!this.loginController.isUserLoggedIn()) {
 237                         // Not logged in
 238                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 239                 }
 240
 241                 // Ask the bean
 242                 return this.addressbookBean.allEntries(addressbook);
 243         }
 244
 245         @Override
 246         public int allEntriesSize (final Addressbook addressbook) {
 247                 // Ask the bean
 248                 return this.allEntries(addressbook).size();
 249         }
 250
 251         @Override
 252         public List<ShareableAddressbook> allShares () {
 253                 // Is the user logged in?
 254                 if (!this.loginController.isUserLoggedIn()) {
 255                         // Not logged in
 256                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 257                 }
 258
 259                 return Collections.unmodifiableList(this.sharedAddressbooks);
 260         }
 261
 262         @Override
 263         public Integer countAllUserSharedAddressbooks (final User user) {
 264                 // Is there cache?
 265                 if (AddressbookWebBean.countSharesList.containsKey(user)) {
 266                         // Return it instead
 267                         return AddressbookWebBean.countSharesList.get(user);
 268                 }
 269
 270                 // Call EJB ("expensive")
 271                 Integer count = this.addressbookBean.countAllUserSharedAddressbooks(user);
 272
 273                 // Add to list
 274                 AddressbookWebBean.countSharesList.put(user, count);
 275
 276                 // Return it
 277                 return count;
 278         }
 279
 280         @Override
 281         public Calendar getAddressbookCreated () {
 282                 return this.addressbookCreated;
 283         }
 284
 285         @Override
 286         public void setAddressbookCreated (final Calendar addressbookCreated) {
 287                 this.addressbookCreated = addressbookCreated;
 288         }
 289
 290         @Override
 291         public Long getAddressbookId () {
 292                 return this.addressbookId;
 293         }
 294
 295         @Override
 296         public void setAddressbookId (final Long addressbookId) {
 297                 this.addressbookId = addressbookId;
 298         }
 299
 300         @Override
 301         public String getAddressbookName () {
 302                 return this.addressbookName;
 303         }
 304
 305         @Override
 306         public void setAddressbookName (final String addressbookName) {
 307                 this.addressbookName = addressbookName;
 308         }
 309
 310         @Override
 311         public User getAddressbookUser () {
 312                 return this.addressbookUser;
 313         }
 314
 315         @Override
 316         public void setAddressbookUser (final User addressbookUser) {
 317                 this.addressbookUser = addressbookUser;
 318         }
 319
 320         @Override
 321         public boolean hasCreatedAddressbooks () {
 322                 // Is the user logged in?
 323                 if (!this.loginController.isUserLoggedIn()) {
 324                         // Not logged in
 325                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 326                 }
 327
 328                 // Check if the list is filled
 329                 return (!this.usersAddressbooks.isEmpty());
 330         }
 331
 332         @PostConstruct
 333         public void init () {
 334                 // Init list
 335                 this.usersAddressbooks = new ArrayList<>(0);
 336
 337                 // Is the user logged-in?
 338                 if (this.loginController.isUserLoggedIn()) {
 339                         // Initialize list
 340                         this.initAddressbookList();
 341                 }
 342
 343                 // TODO Initialize list from bean with just one call
 344                 //this.addressbookBean.getUserCountMap()
 345         }
 346
 347         @Override
 348         public boolean isAddressbookNameUsed (final String addressbookName) {
 349                 // Is it zero size?
 350                 if (null == addressbookName) {
 351                         // Is null
 352                         throw new NullPointerException("addressbookName is null"); //NOI18N
 353                 } else if (this.usersAddressbooks.isEmpty()) {
 354                         // Not found!
 355                         return false;
 356                 }
 357
 358                 // Default is not found
 359                 boolean isFound = false;
 360
 361                 // Check all entries
 362                 for (final Addressbook addressbook : this.usersAddressbooks) {
 363                         // Is the name same?
 364                         if (addressbook.getAddressbookName().equals(addressbookName)) {
 365                                 // Found a match
 366                                 isFound = true;
 367                                 break;
 368                         }
 369                 }
 370
 371                 // Return status
 372                 return isFound;
 373         }
 374
 375         /**
 376          * Initializes the user user's address book list
 377          */
 378         private void initAddressbookList () {
 379                 // Fill list with entries
 380                 this.usersAddressbooks = this.addressbookBean.getUsersList(this.loginController.getLoggedInUser());
 381         }
 382 }