fix for Bug #476 Social Mail Replies: vacation notice auto reply to post is treated as "Favorite"

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/portal/social-mail-servlet@117703 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portal/socialmail/PeriodicTask.java

@@ -54,9 +54,6 @@ import com.sun.mail.util.MailSSLSocketFactory;
 public class PeriodicTask implements Runnable {
 	private static final Logger _log = LoggerFactory.getLogger(PeriodicTask.class);
 
-	private static final String ACCEPTED_SUBJECT_1 = "shared a news";
-	private static final String ACCEPTED_SUBJECT_2 = "commented on";
-
 	private DatabookStore socialStore;
 	private String host; 
 	private String mailserver_username;
@@ -156,8 +153,7 @@ public class PeriodicTask implements Runnable {
 				_log.info("--------------- FOUND EMAIL ------------------");
 				String subject =  message.getSubject();
 				_log.info("Parsing email of " + message.getFrom()[0] + " with subject: " + subject);
-				if (subject.contains(ACCEPTED_SUBJECT_1) || subject.contains(ACCEPTED_SUBJECT_2)) {
-
+				if (isValidReply(message)) {
 					String feedId = extractFeedId(message);
 					String commentText = extractText(portalName, feedId, message);
 					_log.info("Extracted id: " + feedId + " text=" + commentText);
@@ -194,7 +190,7 @@ public class PeriodicTask implements Runnable {
 					}
 				}
 				else {
-					_log.warn("Message Subject is not one of the accepted ones, going to discard Message with subject = " + subject);
+					_log.warn("Message is not a valid reply, going to discard Message with subject = " + subject);
 				}
 				//delete this message				
 				message.setFlag(Flags.Flag.DELETED, true);
@@ -309,6 +305,40 @@ public class PeriodicTask implements Runnable {
 			return null;		
 		return toParse.substring(plus+1, at);
 	}
+	/**
+	 * the email is considered a valid reply if and only of it contains the EmailPlugin.WRITE_ABOVE_TO_REPLY text in the body
+	 * @param message the message to check
+	 * @return true if the email is a valid reply, false otherwise
+	 */
+	private boolean isValidReply(Message message) {
+		Object messageContent;
+		try {
+			messageContent = message.getContent();
+			String toParse = null;
+			final String SEPARATOR = EmailPlugin.WRITE_ABOVE_TO_REPLY.substring(0, 23);
+			// Check if content is pure text/html or in parts
+			if (messageContent instanceof Multipart) {
+				_log.debug("Checking if isValidReply, found Multipart Message, getting text part ... looking for separator " + SEPARATOR);
+				Multipart multipart = (Multipart) messageContent;
+				BodyPart part = multipart.getBodyPart(0);
+				part.toString();
+				toParse = part.getContent().toString();
+			}
+			else  {
+				_log.debug("Found a text/plain Message, getting text ... looking for separator " + SEPARATOR);
+				toParse = messageContent.toString();
+			}
+			String[] lines = toParse.split(System.getProperty("line.separator"));
+			for (int i = 0; i < lines.length; i++) {
+				if (lines[i].contains(SEPARATOR)) 
+					return true;
+			}
+			return false;
+		} catch (Exception e) {
+			e.printStackTrace();
+			return false;
+		} 
+	}
 	/**
 	 * 
 	 * @param portalName