Recommendations (getJIDSubscribedToUserRecommendations)

1 files changed, 36 insertions, 0 deletions

diff --git a/src/com/juick/server/SubscriptionsQueries.java b/src/com/juick/server/SubscriptionsQueries.java
index ac465948..d0f5f308 100644
--- a/src/com/juick/server/SubscriptionsQueries.java
+++ b/src/com/juick/server/SubscriptionsQueries.java
@@ -126,6 +126,42 @@ public class SubscriptionsQueries {
         return jids;
     }
 
+    public static ArrayList<String> getJIDSubscribedToUserRecommendations(Connection sql, int uid, int mid, int muid) {
+        ArrayList<String> jids = new ArrayList<String>();
+
+        ArrayList<Integer> tags = MessagesQueries.getMessageTagsIDs(sql, mid);
+
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        try {
+            String query = "SELECT jid FROM jids WHERE active=1 AND user_id!=" + uid;
+            query += " AND user_id IN (SELECT suser_id FROM subscr_users WHERE user_id=" + uid + ")";
+            query += " AND user_id NOT IN (SELECT user_id FROM bl_users WHERE bl_user_id=" + muid + ")";
+            query += " AND user_id NOT IN (SELECT suser_id FROM subscr_users WHERE user_id=" + muid + ")";
+            query += " AND user_id NOT IN (SELECT suser_id FROM subscr_messages WHERE message_id=" + mid + ")";
+            query += " AND user_id NOT IN (SELECT user_id FROM favorites WHERE message_id=" + mid + ")";
+            query += " AND user_id NOT IN (SELECT subscr_users.suser_id FROM subscr_users INNER JOIN favorites ON (favorites.message_id=" + mid + " AND subscr_users.user_id=favorites.user_id AND favorites.user_id!=" + uid + "))";
+            if (!tags.isEmpty()) {
+                String tagsStr = Utils.convertArrayInt2String(tags);
+                query += " AND user_id NOT IN (SELECT suser_id FROM subscr_tags WHERE tag_id IN (" + tagsStr + "))";
+                query += " AND user_id NOT IN (SELECT user_id FROM bl_tags WHERE tag_id IN (" + tagsStr + "))";
+            }
+
+            stmt = sql.prepareStatement(query);
+            rs = stmt.executeQuery();
+            rs.beforeFirst();
+            while (rs.next()) {
+                jids.add(rs.getString(1));
+            }
+        } catch (SQLException e) {
+            System.err.println(e);
+        } finally {
+            Utils.finishSQL(rs, stmt);
+        }
+
+        return jids;
+    }
+
     public static boolean subscribeMessage(Connection sql, int mid, int vuid) {
         return SQLHelpers.execute(sql, "INSERT IGNORE INTO subscr_messages(suser_id,message_id) VALUES (" + vuid + "," + mid + ")") == 1;
     }