From ca2db58145c4663a22f44f5f98a67aa03fbe8d38 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Wed, 23 Aug 2017 11:59:55 +0300
Subject: server-jdbc: fix favorites count

---
 .../com/juick/service/MessagesServiceImpl.java     | 24 +++++++++++-----------
 .../java/com/juick/service/MessageServiceTest.java | 17 ++++++++++++++-
 2 files changed, 28 insertions(+), 13 deletions(-)

(limited to 'juick-server-jdbc/src')

diff --git a/juick-server-jdbc/src/main/java/com/juick/service/MessagesServiceImpl.java b/juick-server-jdbc/src/main/java/com/juick/service/MessagesServiceImpl.java
index 225845fe..caffda14 100644
--- a/juick-server-jdbc/src/main/java/com/juick/service/MessagesServiceImpl.java
+++ b/juick-server-jdbc/src/main/java/com/juick/service/MessagesServiceImpl.java
@@ -214,15 +214,11 @@ public class MessagesServiceImpl extends BaseJdbcService implements MessagesServ
     @Transactional
     @Override
     public boolean recommendMessage(final int mid, final int vuid) {
-        boolean res = getJdbcTemplate().update(
-                "INSERT IGNORE INTO favorites(user_id, message_id, ts) VALUES (?, ?, NOW())",
-                vuid, mid) == 1;
-
-        if (res)
-            getJdbcTemplate().update(
-                    "UPDATE messages SET likes = likes + 1 WHERE message_id = ?",
-                    mid);
-        return res;
+        int wasDeleted = getJdbcTemplate()
+                .update("DELETE FROM favorites WHERE user_id=? AND message_id=?", vuid, mid);
+        return wasDeleted == 0
+                && getJdbcTemplate()
+                .update("INSERT INTO favorites(user_id, message_id, ts) VALUES (?, ?, NOW())", vuid, mid) == 1;
     }
 
     @Transactional(readOnly = true)
@@ -292,11 +288,13 @@ public class MessagesServiceImpl extends BaseJdbcService implements MessagesServ
                         + "messages.ts,"
                         + "messages.readonly, messages.privacy, messages.replies,"
                         + "messages.attach, messages.place_id, messages.lat,"
-                        + "messages.lon, messages.likes, messages.hidden,"
+                        + "messages.lon, COUNT(favorites.user_id) as likes, messages.hidden,"
                         + "txt.tags, txt.repliesby, txt.txt, '' as q FROM messages "
                         + "INNER JOIN users ON messages.user_id = users.id "
                         + "INNER JOIN messages_txt AS txt "
                         + "ON messages.message_id = txt.message_id "
+                        + "LEFT JOIN favorites "
+                        + "ON messages.message_id = favorites.message_id "
                         + "WHERE messages.message_id = ?",
                 new MessageMapper(),
                 mid);
@@ -709,12 +707,14 @@ public class MessagesServiceImpl extends BaseJdbcService implements MessagesServ
                             + "messages.ts,"
                             + "messages.readonly,messages.privacy,messages.replies,"
                             + "messages.attach,messages.place_id,messages.lat,"
-                            + "messages.lon,messages.likes,messages.hidden,"
+                            + "messages.lon,COUNT(favorites.user_id) AS likes,messages.hidden,"
                             + "messages_txt.tags,messages_txt.repliesby, messages_txt.txt, '' as q "
                             + "FROM (messages INNER JOIN messages_txt "
                             + "ON messages.message_id=messages_txt.message_id) "
                             + "INNER JOIN users ON messages.user_id=users.id "
-                            + "WHERE messages.message_id IN (:ids) ORDER BY messages.message_id DESC",
+                            + "LEFT JOIN favorites "
+                            + "ON messages.message_id = favorites.message_id "
+                            + "WHERE messages.message_id IN (:ids) GROUP BY messages.message_id ORDER BY messages.message_id DESC",
                     new MapSqlParameterSource("ids", mids),
                     new MessageMapper());
         }
diff --git a/juick-server-jdbc/src/test/java/com/juick/service/MessageServiceTest.java b/juick-server-jdbc/src/test/java/com/juick/service/MessageServiceTest.java
index fed5dad8..fae938cc 100644
--- a/juick-server-jdbc/src/test/java/com/juick/service/MessageServiceTest.java
+++ b/juick-server-jdbc/src/test/java/com/juick/service/MessageServiceTest.java
@@ -24,6 +24,9 @@ import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
 
 import javax.inject.Inject;
 
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+
 /**
  * Created by aalexeev on 11/25/16.
  */
@@ -31,10 +34,22 @@ import javax.inject.Inject;
 public class MessageServiceTest extends AbstractJUnit4SpringContextTests {
     @Inject
     private MessagesService messagesService;
-
+    @Inject
+    private UserService userService;
 
     @Test
     public void getMyFeed() {
         messagesService.getMyFeed(1, 1000000);
     }
+    @Test
+    public void likesCountShouldMatch() {
+        int uid = userService.createUser("ugnich", "secret");
+        int mid = messagesService.createMessage(uid, "test", null, null);
+        int mid2 = messagesService.createMessage(uid, "test2", null, null);
+        assertThat(messagesService.recommendMessage(mid, uid), equalTo(true));
+        assertThat(messagesService.getMessage(mid).getLikes(), equalTo(1));
+        assertThat(messagesService.recommendMessage(mid, uid), equalTo(false));
+        assertThat(messagesService.getMessage(mid).getLikes(), equalTo(0));
+        assertThat(messagesService.getAll(uid, 0).size(), equalTo(2));
+    }
 }
-- 
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