Add maximum length a person can queue in a row.

marietje/queues/models.py

@@ -111,12 +111,27 @@ class Queue(models.Model):
         return songs[1:]
 
     def request(self, song, user):
-        order = PlaylistSong.objects.filter(playlist=self.playlist).aggregate(Max('order'))['order__max']
+        playlist_songs = PlaylistSong.objects.filter(playlist=self.playlist, state=0).order_by('order')
+
+        order = 0
+        seconds_in_a_row = 0
+        for playlist_song in playlist_songs:
+            order = playlist_song.order
+            if playlist_song.user != user:
+                seconds_in_a_row = 0
+            else:
+                seconds_in_a_row += playlist_song.song.duration
+
+        if seconds_in_a_row > 0 and seconds_in_a_row + song.duration > settings.MAX_MINUTES_IN_A_ROW * 60\
+                and not user.is_superuser:
+            return False
+
         if order is None:
             order = 0
         order += 1
         playlist_song = PlaylistSong(playlist=self.playlist, song=song, user=user, order=order)
         playlist_song.save()
+        return True
 
     def fill_random_queue(self):
         song_count = PlaylistSong.objects.filter(playlist_id=self.random_playlist_id, state=0).count()