fix: BAC-29 Implement Mappers for Common Classes (#101)

Reviewed-on: #101
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/dto/TrickDTO.scala

@@ -0,0 +1,20 @@
+package dto
+
+import de.knockoutwhist.rounds.Trick
+import play.api.libs.json.{Json, OFormat}
+
+case class TrickDTO(cards: Map[PlayerDTO, CardDTO], firstCard: Option[CardDTO], winner: Option[PlayerDTO])
+
+object TrickDTO {
+
+  implicit val trickFormat: OFormat[TrickDTO] = Json.format[TrickDTO]
+
+  def apply(trick: Trick): TrickDTO = {
+    TrickDTO(
+      cards = trick.cards.map { case (card, player) => PlayerDTO(player) -> CardDTO(card) },
+      firstCard = trick.firstCard.map(card => CardDTO(card)),
+      winner = trick.winner.map(player => PlayerDTO(player))
+    )
+  }
+
+}