feat(api): Implemented turn event via websocket (#86)

Co-authored-by: TeamCity <teamcity@service.local>
Reviewed-on: #86
Reviewed-by: lq64 <lq@blackhole.local>

knockoutwhistweb/app/util/mapper/TurnEventMapper.scala

@@ -0,0 +1,35 @@
+package util.mapper
+
+import de.knockoutwhist.events.global.TurnEvent
+import de.knockoutwhist.player.AbstractPlayer
+import model.sessions.UserSession
+import play.api.libs.json.{JsArray, JsObject, Json}
+
+object TurnEventMapper extends SimpleEventMapper[TurnEvent] {
+
+  override def id: String = "TurnEvent"
+
+  override def toJson(event: TurnEvent, session: UserSession): JsObject = {
+    val nextPlayers = if (session.gameLobby.logic.getPlayerQueue.isEmpty) {
+      Json.arr()
+    } else {
+      val queue = session.gameLobby.logic.getPlayerQueue.get
+      JsArray(
+        queue.duplicate().map(player => mapPlayer(player)).toList
+      )
+    }
+    
+    Json.obj(
+      "currentPlayer" -> mapPlayer(event.player),
+      "nextPlayers" -> nextPlayers
+    )
+  }
+
+  private def mapPlayer(player: AbstractPlayer): JsObject = {
+    Json.obj(
+      "name" -> player.name,
+      "dog" -> player.isInDogLife
+    )
+  }
+
+}