src/java/org/mxchange/addressbook/beans/shares/SharesWebBean.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.shares;
  18
  19 import java.text.MessageFormat;
  20 import java.util.Collections;
  21 import java.util.List;
  22 import java.util.Objects;
  23 import javax.enterprise.context.SessionScoped;
  24 import javax.faces.view.facelets.FaceletException;
  25 import javax.inject.Inject;
  26 import javax.inject.Named;
  27 import javax.naming.Context;
  28 import javax.naming.InitialContext;
  29 import javax.naming.NamingException;
  30 import org.mxchange.addressbook.beans.login.UserLoginWebController;
  31 import org.mxchange.addressbook.exceptions.UserAlreadySharingAddressbookException;
  32 import org.mxchange.addressbook.model.addressbook.Addressbook;
  33 import org.mxchange.addressbook.model.addressbook.shared.ShareableAddressbook;
  34 import org.mxchange.addressbook.model.shared.SharedAddressbooksSessionBeanRemote;
  35 import org.mxchange.jusercore.model.user.User;
  36
  37 /**
  38  * A bean for sharing address books with other users
  39  * <p>
  40  * @author Roland Haeder
  41  */
  42 @Named (value = "shareController")
  43 @SessionScoped
  44 public class SharesWebBean implements SharesWebController {
  45
  46         /**
  47          * Serial number
  48          */
  49         private static final long serialVersionUID = 19_868_976_871_976_780L;
  50
  51         /**
  52          * Cached flag whether the user is sharing address books
  53          */
  54         private Boolean isUserSharing = null;
  55
  56         /**
  57          * Login controller injection
  58          */
  59         @Inject
  60         private UserLoginWebController loginController;
  61
  62         /**
  63          * Share instance
  64          */
  65         private ShareableAddressbook share;
  66
  67         /**
  68          * A list of all user's shared (with others) address books
  69          */
  70         private List<ShareableAddressbook> sharedAddressbooks;
  71
  72         /**
  73          * Remote bean for sharing address books
  74          */
  75         private SharedAddressbooksSessionBeanRemote shareBean;
  76
  77         /**
  78          * User id of sharee
  79          */
  80         private Long shareeUserId;
  81
  82         /**
  83          * Default constructor
  84          */
  85         public SharesWebBean () {
  86                 // Try it
  87                 try {
  88                         // Get initial context
  89                         Context context = new InitialContext();
  90
  91                         // Look up bean
  92                         this.shareBean = (SharedAddressbooksSessionBeanRemote) context.lookup("ejb/stateless-share"); //NOI18N
  93                 } catch (final NamingException ex) {
  94                         // Continue to throw
  95                         throw new FaceletException(ex);
  96                 }
  97         }
  98
  99         @Override
 100         public Long getShareeUserId () {
 101                 return this.shareeUserId;
 102         }
 103
 104         @Override
 105         public void setShareeUserId (final Long shareeUserId) {
 106                 this.shareeUserId = shareeUserId;
 107         }
 108
 109         @Override
 110         public boolean isShareeUserIdSet () {
 111                 return ((this.getShareeUserId() instanceof Long) && (this.getShareeUserId() > 0));
 112         }
 113
 114         @Override
 115         public boolean isShareeUserIdEmpty () {
 116                 return (!this.isShareeUserIdSet());
 117         }
 118
 119         @Override
 120         public boolean isSharingAddressbooks () {
 121                 // Only to be called for logged-in users
 122                 if (!this.loginController.isUserLoggedIn()) {
 123                         // Not logged in
 124                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 125                 } else if (this.isUserSharing instanceof Boolean) {
 126                         // Return cached value
 127                         return this.isUserSharing;
 128                 }
 129
 130                 // Call the proper bean
 131                 this.isUserSharing = this.shareBean.isUserSharingAddressbooks(this.loginController.getLoggedInUser());
 132
 133                 // Return it
 134                 return this.isUserSharing;
 135         }
 136
 137         @Override
 138         public String startSharing (final User user, final Addressbook addressbook) {
 139                 // Check conditions
 140                 if (!this.loginController.isUserLoggedIn()) {
 141                         // No, then throw exception
 142                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 143                 } else if (null == user) {
 144                         // Throw NPE
 145                         throw new NullPointerException("user is null"); //NOI18N
 146                 } else if (user.getUserId() == null) {
 147                         // Throw NPE again
 148                         throw new NullPointerException("user.userId is null"); //NOI18N
 149                 } else if (user.getUserId() < 1) {
 150                         // Invalid id number
 151                         throw new IllegalStateException(MessageFormat.format("user.userId={0} is invalid", user.getUserId())); //NOI18N
 152                 } else if (Objects.equals(user, this.loginController.getLoggedInUser())) {
 153                         // Sharing with yourself!
 154                         throw new IllegalStateException("User tries to share with himself."); //NOI18N
 155                 } else if (null == addressbook) {
 156                         // Throw NPE again
 157                         throw new NullPointerException("addressbook is null"); //NOI18N
 158                 } else if (addressbook.getAddressbookId() == null) {
 159                         // Throw NPE again
 160                         throw new NullPointerException("addressbook.addressbookId is null"); //NOI18N
 161                 } else if (addressbook.getAddressbookId() < 1) {
 162                         // Invalid id number
 163                         throw new IllegalArgumentException(MessageFormat.format("addressbook.addressbookId={0} is invalid.", addressbook.getAddressbookId())); //NOI18N
 164                 } else if (!Objects.equals(addressbook.getAddressbookUser(), this.loginController.getLoggedInUser())) {
 165                         // Not the same user!
 166                         throw new IllegalStateException(MessageFormat.format("Address book id {0} owner id {1} mismatching logged-in user id {2}", addressbook.getAddressbookId(), addressbook.getAddressbookUser().getUserId(), this.loginController.getLoggedInUser().getUserId()));
 167                 }
 168
 169                 try {
 170                         // Init sharing
 171                         ShareableAddressbook shared = this.shareBean.startSharing(user, addressbook);
 172
 173                         // TODO Set it here
 174                         this.setShare(shared);
 175                 } catch (final UserAlreadySharingAddressbookException ex) {
 176                         // Throw again
 177                         throw new FaceletException(ex);
 178                 }
 179
 180                 // TODO Unfinished
 181                 return null;
 182         }
 183
 184         @Override
 185         public List<ShareableAddressbook> allShares () {
 186                 // Is the user logged in?
 187                 if (!this.loginController.isUserLoggedIn()) {
 188                         // Not logged in
 189                         throw new FaceletException("This method can only be called as logged-in user."); //NOI18N
 190                 }
 191
 192                 return Collections.unmodifiableList(this.sharedAddressbooks);
 193         }
 194
 195         @Override
 196         public ShareableAddressbook getShare () {
 197                 return this.share;
 198         }
 199
 200         @Override
 201         public void setShare (final ShareableAddressbook share) {
 202                 this.share = share;
 203         }
 204 }