feat: BAC-30 Implement Jackson Mapping via DTOs (#102)

Reviewed-on: #102
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/dto/TrumpInfoDTO.scala

@@ -0,0 +1,29 @@
+package dto
+
+import dto.subDTO.{HandDTO, PlayerDTO}
+import logic.game.GameLobby
+import model.users.User
+
+import scala.util.Try
+
+case class TrumpInfoDTO(
+                       chooser: Option[PlayerDTO],
+                       self: Option[PlayerDTO],
+                       selfHand: Option[HandDTO],
+                       )
+
+object TrumpInfoDTO {
+
+  def apply(lobby: GameLobby, user: User): TrumpInfoDTO = {
+    val selfPlayer = Try {
+      Some(lobby.getPlayerByUser(user))
+    }.getOrElse(None)
+
+    TrumpInfoDTO(
+      chooser = lobby.logic.getTrumpPlayer.map(PlayerDTO(_)),
+      self = selfPlayer.map(PlayerDTO(_)),
+      selfHand = selfPlayer.flatMap(_.currentHand()).map(HandDTO(_))
+    )
+  }
+
+}