feat(ui): Websocket

Added simple websocket. Serverside websocket logic isnt in the usersession

knockoutwhistweb/app/assets/actor/KnockOutWebSocketActor.scala

@@ -0,0 +1,21 @@
+package actor
+
+import org.apache.pekko.actor.{Actor, ActorRef}
+import org.apache.pekko.http.scaladsl.model.ContentRange.Other
+
+
+class KnockOutWebSocketActor(
+                              out: ActorRef,
+                            ) extends Actor {
+    def receive: Receive = {
+      case msg: String =>
+        out ! s"Received your message: ${msg}"
+      case other: Other =>
+        println(s"Received unknown message: $other")
+    }
+
+    def sendJsonToClient(json: String): Unit = {
+      println("Received event from Controller")
+      out ! json
+    }
+}

knockoutwhistweb/app/controllers/WebsocketController.scala

@@ -0,0 +1,30 @@
+package controllers
+import actor.KnockOutWebSocketActor
+import org.apache.pekko.actor.{ActorRef, ActorSystem, Props}
+import org.apache.pekko.stream.Materializer
+import play.api.*
+import play.api.libs.streams.ActorFlow
+import play.api.mvc.*
+
+import javax.inject.*
+
+
+@Singleton
+class WebsocketController @Inject()(
+                                     cc: ControllerComponents,
+                                   )(implicit system: ActorSystem, mat: Materializer) extends AbstractController(cc) {
+
+  object KnockOutWebSocketActorFactory {
+    def create(out: ActorRef) = {
+      Props(new KnockOutWebSocketActor(out))
+    }
+  }
+  def socket() = WebSocket.accept[String, String] { request =>
+    ActorFlow.actorRef { out =>
+      println("Connect received")
+      KnockOutWebSocketActorFactory.create(out)
+    }
+  }
+
+
+}