it sends now the email with a temp password, missing to save it in DB

pom.xml

@@ -41,6 +41,12 @@
 		</dependencies>
 	</dependencyManagement>
 	<dependencies>
+		<dependency>
+			<groupId>org.gcube.portal</groupId>
+			<artifactId>event-publisher-portal</artifactId>
+			<version>[1.0.0-SNAPSHOT, 2.0.0-SNAPSHOT)</version>
+			<scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>javax.servlet</groupId>
 			<artifactId>javax.servlet-api</artifactId>

src/main/java/org/gcube/portal/invites/GenerateSecurePassword.java

@@ -0,0 +1,20 @@
+package org.gcube.portal.invites;
+
+import java.security.SecureRandom;
+import java.util.Random;
+ 
+public class GenerateSecurePassword {
+
+    private static final Random RANDOM = new SecureRandom();
+    private static final String ALPHABET = "123ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+    public static String generatePassword(int length) {
+        StringBuilder returnValue = new StringBuilder(length);
+
+        for (int i = 0; i < length; i++) {
+            returnValue.append(ALPHABET.charAt(RANDOM.nextInt(ALPHABET.length())));
+        }
+
+        return new String(returnValue);
+    }
+}

src/main/java/org/gcube/portal/invites/InvitesManager.java

@@ -24,8 +24,10 @@ import org.gcube.portal.mailing.message.RecipientType;
 import org.gcube.portal.mailing.service.EmailTemplateService;
 import org.gcube.portal.mailing.templates.TemplateUserHasInvited;
 import org.gcube.portal.mailing.templates.TemplatedJoinMeInvite;
+import org.gcube.portal.mailing.templates.TemplatenviteWIthPassword;
 import org.gcube.vomanagement.usermanagement.exception.GroupRetrievalFault;
 import org.gcube.vomanagement.usermanagement.exception.UserManagementSystemException;
+import org.gcube.vomanagement.usermanagement.exception.UserRetrievalFault;
 import org.gcube.vomanagement.usermanagement.impl.LiferayGroupManager;
 import org.gcube.vomanagement.usermanagement.impl.LiferayUserManager;
 import org.gcube.vomanagement.usermanagement.model.GCubeGroup;
@@ -44,6 +46,7 @@ public class InvitesManager {
 	public static final String SITEID_ATTR ="siteId";
 	public static final String INVITEID_ATTR ="inviteId";
 	public static final String INVITE_PAGE_ENDPOINT = "manage-invite";
+	public static final int RANDOM_PASSWD_LENGTH = 8;
 
 
 	private static InvitesManager instance;
@@ -84,14 +87,24 @@ public class InvitesManager {
 
 		Invite invite = new Invite(UUID.randomUUID().toString(), username, currScope, email, controlcode, InviteStatus.PENDING, new Date(), fromFullName); 
 		InviteOperationResult result = null;
+
+		boolean accountExists = true;
+		try {
+			new LiferayUserManager().getUserByEmail(invite.getInvitedEmail());
+		} catch (UserManagementSystemException | UserRetrievalFault e) {
+			_log.info("No user account exist with this email " + invite.getInvitedEmail() + " sending email with password temp.");
+			accountExists = false;
+		}
+
 		boolean emailResult = false;
 		try {
 			String vreName =  PortalContext.getConfiguration().getCurrentGroupName(request);
 			result = store.saveInvite(invite);
 			if (result == InviteOperationResult.ALREADY_INVITED) {
 				invite.setKey(store.isExistingInvite(currScope, email));
-			}			
-			emailResult = sendInviteEmail(request, invite, currUser, vreName, name, email, vreDescription);
+			}		
+
+			emailResult = sendInviteEmail(request, invite, currUser, vreName, name, email, vreDescription, accountExists);
 			notifyInviteSent(request, currUser, currScope, invite, vreName);
 
 		} catch (AddressException e) {
@@ -110,7 +123,7 @@ public class InvitesManager {
 			String vreName,
 			String name, 
 			String email,
-			String vreDescription) {
+			String vreDescription, boolean accountExists) {
 
 		PortalContext pContext = PortalContext.getConfiguration();
 		String gatewayURL = pContext.getGatewayURL(request);
@@ -122,8 +135,9 @@ public class InvitesManager {
 
 			long groupId = PortalContext.getConfiguration().getCurrentGroupId(request);
 
-		;
-			
+
+
+
 			StringBuilder getParamsEncoded = new StringBuilder(URLEncoder.encode(new String(Base64.encodeBase64(INVITEID_ATTR.getBytes())), "UTF-8"))
 					.append("=")
 					.append(URLEncoder.encode(new String(Base64.encodeBase64(invite.getKey().getBytes())), "UTF-8"))
@@ -138,11 +152,22 @@ public class InvitesManager {
 					.append("?")
 					.append(getParamsEncoded);
 
-			EmailTemplateService.send(
-					subject, 
-					new TemplatedJoinMeInvite(gatewayName, gatewayURL, currUser, name, vreName, vreDescription, linkToAcceptInvite.toString()), 
-					request,
-					new Recipient(email), new Recipient(new EmailAddress(currUser.getEmail()), RecipientType.CC));
+			String randomPasswd = "";
+			if (accountExists) {
+				EmailTemplateService.send(
+						subject, 
+						new TemplatedJoinMeInvite(gatewayName, gatewayURL, currUser, name, vreName, vreDescription, linkToAcceptInvite.toString()), 
+						request,
+						new Recipient(email), new Recipient(new EmailAddress(currUser.getEmail()), RecipientType.CC));
+			} 
+			else { //the user account does not exists yet, it needs to be created on KC and a random pwd to be sent to the user in the email
+				randomPasswd = GenerateSecurePassword.generatePassword(RANDOM_PASSWD_LENGTH);
+				EmailTemplateService.send(
+						subject, 
+						new TemplatenviteWIthPassword(gatewayName, gatewayURL, currUser, name, vreName, vreDescription, linkToAcceptInvite.toString(), randomPasswd), 
+						request,
+						new Recipient(email), new Recipient(new EmailAddress(currUser.getEmail()), RecipientType.CC));
+			}
 
 
 			_log.debug("Join Me Invite email message sent successfully to " + email );