update User.seenAt less often

app/controllers/LilaController.scala

@@ -172,11 +172,11 @@ private[controllers] trait LilaController
   private def restoreUser(req: RequestHeader): Fu[Option[UserModel]] =
     Env.security.api restoreUser req addEffect {
       _ foreach { user ⇒
-        UserRepo setSeenAt user.id
+        if (!user.seenRecently) UserRepo setSeenAt user.id
         val lang = Env.i18n.pool.lang(req).language
         if (user.lang != lang.some) UserRepo.setLang(user.id, lang)
         Env.user setOnline user
-        user.seenAt.isEmpty ?? Env.relation.autofollow(user)
+        if (user.seenAt.isEmpty) Env.relation autofollow user
       }
     }
 

modules/user/src/main/User.scala

@@ -2,7 +2,7 @@ package lila.user
 
 import chess.Speed
 import org.joda.time.DateTime
-import org.scala_tools.time.Imports._
+import scala.concurrent.duration._
 
 case class User(
     id: String,
@@ -45,6 +45,13 @@ case class User(
   def hasGames = count.game > 0
 
   def countRated = count.rated
+
+  private val recentDuration = 10.minutes
+  def seenRecently: Boolean = timeNoSee < recentDuration
+
+  def timeNoSee: Duration = seenAt.fold[Duration](Duration.Inf) { s ⇒
+    (nowMillis - s.getMillis).millis
+  }
 }
 
 object User {

todo

@@ -64,4 +64,3 @@ geolocation http://db-ip.com/db/
 no castling in 50-moves https://github.com/ornicar/scalachess/issues/3
 enforce single user for an IP
 user made chess puzzles (just input position and number of moves, let AI find solution)
-setup AI wrong move (log game ID)