From 1621fb481fe91b084a48326419969f3a22ccbbe2 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sat, 29 Sep 2018 16:39:37 +0300
Subject: Mentions

---
 .../main/java/com/juick/service/SubscriptionService.java    |  2 +-
 juick-common/src/main/java/com/juick/util/MessageUtils.java | 13 ++++++++++++-
 juick-common/src/test/java/com/juick/MessageTest.java       | 10 ++++++++++
 3 files changed, 23 insertions(+), 2 deletions(-)

(limited to 'juick-common')

diff --git a/juick-common/src/main/java/com/juick/service/SubscriptionService.java b/juick-common/src/main/java/com/juick/service/SubscriptionService.java
index 8132ec10..98ea59e0 100644
--- a/juick-common/src/main/java/com/juick/service/SubscriptionService.java
+++ b/juick-common/src/main/java/com/juick/service/SubscriptionService.java
@@ -30,7 +30,7 @@ import java.util.List;
 public interface SubscriptionService {
     List<String> getJIDSubscribedToUser(int uid, boolean friendsonly);
 
-    List<User> getSubscribedUsers(int uid, int mid);
+    List<User> getSubscribedUsers(int uid, Message msg);
 
     List<User> getUsersSubscribedToComments(Message msg, Message reply);
 
diff --git a/juick-common/src/main/java/com/juick/util/MessageUtils.java b/juick-common/src/main/java/com/juick/util/MessageUtils.java
index bac24507..4de68cb9 100644
--- a/juick-common/src/main/java/com/juick/util/MessageUtils.java
+++ b/juick-common/src/main/java/com/juick/util/MessageUtils.java
@@ -68,6 +68,9 @@ public class MessageUtils {
 
     private final static String replyNumberRegex = "((?<=\\s)|(?<=\\A))\\/(\\d+)((?=\\s)|(?=\\Z)|(?=\\p{Punct}))";
 
+    private final static String usernameRegex = "((?<=\\s)|(?<=\\A))@([\\w\\-]{2,16})((?=\\s)|(?=\\Z)|(?=\\p{Punct}))";
+    private final static Pattern usernamePattern = Pattern.compile(usernameRegex);
+
     public static String formatMessageCode(String msg) {
         msg = msg.replaceAll("&", "&amp;");
         msg = msg.replaceAll("<", "&lt;");
@@ -139,7 +142,7 @@ public class MessageUtils {
 
         // @username
         // <a href="http://juick.com/username/">@username</a>
-        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))@([\\w\\-]{2,16})((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<a href=\"https://juick.com/$2/\">@$2</a>$3");
+        msg = msg.replaceAll(usernameRegex, "$1<a href=\"https://juick.com/$2/\">@$2</a>$3");
 
         // (http://juick.com/last?page=2)
         // (<a href="http://juick.com/last?page=2" rel="nofollow">juick.com</a>)
@@ -301,4 +304,12 @@ public class MessageUtils {
         }
         return input;
     }
+    public static List<String> getMentions(Message msg) {
+        Matcher usernameMatcher = usernamePattern.matcher(msg.getText());
+        List<String> result = new ArrayList<>();
+        while (usernameMatcher.find()) {
+            result.add(usernameMatcher.group());
+        }
+        return result;
+    }
 }
diff --git a/juick-common/src/test/java/com/juick/MessageTest.java b/juick-common/src/test/java/com/juick/MessageTest.java
index aaa66af2..d9c83b84 100644
--- a/juick-common/src/test/java/com/juick/MessageTest.java
+++ b/juick-common/src/test/java/com/juick/MessageTest.java
@@ -22,6 +22,8 @@ import org.apache.commons.lang3.RandomUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.junit.Test;
 
+import java.util.List;
+
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
 
@@ -168,4 +170,12 @@ public class MessageTest {
         String msg = "[te](http://juick.com/)[st](http://juick.com/)";
         assertThat(MessageUtils.stripNonSafeUrls(msg), is(msg));
     }
+    @Test
+    public void mentionsCount() {
+        Message msg = new Message();
+        msg.setText("@ugnich go home");
+        List<String> mentions = MessageUtils.getMentions(msg);
+        assertThat(mentions.size(), is(1));
+        assertThat(mentions.get(0), is("@ugnich"));
+    }
 }
-- 
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