The last element listened to is the first in the list at the next start

app/src/main/java/com/cappielloantonio/play/repository/QueueRepository.java

@@ -128,12 +128,29 @@ public class QueueRepository {
         return count;
     }
 
-    public void setTimestamp(Song song) {
-        SetTimestampThreadSafe delete = new SetTimestampThreadSafe(queueDao, song.getId());
-        Thread thread = new Thread(delete);
+    public void setTimestamp(String id) {
+        SetTimestampThreadSafe timestamp = new SetTimestampThreadSafe(queueDao, id);
+        Thread thread = new Thread(timestamp);
         thread.start();
     }
 
+    public int getLastPlayedSongIndex() {
+        int index = 0;
+
+        GetLastPlayedSongThreadSafe getLastPlayedSongThreadSafe = new GetLastPlayedSongThreadSafe(queueDao);
+        Thread thread = new Thread(getLastPlayedSongThreadSafe);
+        thread.start();
+
+        try {
+            thread.join();
+            index = getLastPlayedSongThreadSafe.getIndex();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        return index;
+    }
+
     private static class GetSongsThreadSafe implements Runnable {
         private final QueueDao queueDao;
         private List<Song> songs;
@@ -227,4 +244,22 @@ public class QueueRepository {
             queueDao.setLastPlay(songId, Instant.now().toEpochMilli());
         }
     }
+
+    private static class GetLastPlayedSongThreadSafe implements Runnable {
+        private final QueueDao queueDao;
+        private int index;
+
+        public GetLastPlayedSongThreadSafe(QueueDao queueDao) {
+            this.queueDao = queueDao;
+        }
+
+        @Override
+        public void run() {
+            index = queueDao.getLastPlay();
+        }
+
+        public int getIndex() {
+            return index;
+        }
+    }
 }