feat(websocket)!: Implement WebSocket connection and event handling

knockoutwhistweb/app/logic/PodManager.scala

@@ -11,14 +11,14 @@ import util.GameUtil
 import javax.inject.Singleton
 import scala.collection.mutable
 
-@Singleton
-class PodManager {
+object PodManager {
 
   val TTL: Long = System.currentTimeMillis() + 86400000L // 24 hours in milliseconds
   val podIp: String = System.getenv("POD_IP")
   val podName: String = System.getenv("POD_NAME")
   
   private val sessions: mutable.Map[String, GameLobby] = mutable.Map()
+  private val userSession: mutable.Map[User, String] = mutable.Map()
   private val injector: Injector = Guice.createInjector(KnockOutWebConfigurationModule())
   
   def createGame(
@@ -35,6 +35,7 @@ class PodManager {
       host = host
     )
     sessions += (gameLobby.id -> gameLobby)
+    userSession += (host -> gameLobby.id)
     gameLobby
   }
 
@@ -44,6 +45,30 @@ class PodManager {
   
   private[logic] def removeGame(gameId: String): Unit = {
     sessions.remove(gameId)
+    // Also remove all user sessions associated with this game
+    userSession.filterInPlace((_, v) => v != gameId)
   }
+  
+  def registerUserToGame(user: User, gameId: String): Boolean = {
+    if (sessions.contains(gameId)) {
+      userSession += (user -> gameId)
+      true
+    } else {
+      false
+    }
+  }
+  
+  def unregisterUserFromGame(user: User): Unit = {
+    userSession.remove(user)
+  }
+  
+  def identifyGameOfUser(user: User): Option[GameLobby] = {
+    userSession.get(user) match {
+      case Some(gameId) => sessions.get(gameId)
+      case None => None
+    }
+  }
+  
+  
 
 }

knockoutwhistweb/app/logic/game/GameLobby.scala

@@ -12,6 +12,7 @@ import de.knockoutwhist.player.{AbstractPlayer, PlayerFactory}
 import de.knockoutwhist.rounds.{Match, Round, Trick}
 import de.knockoutwhist.utils.events.{EventListener, SimpleEvent}
 import exceptions.*
+import logic.PodManager
 import logic.game.PollingEvents.{CardPlayed, LobbyCreation, LobbyUpdate, NewRound, NewTrick, ReloadEvent}
 import model.sessions.{InteractionType, UserSession}
 import model.users.User
@@ -69,9 +70,11 @@ class GameLobby private(
     if (logic.getCurrentState != Lobby) throw new IllegalStateException("The game has already started!")
     val userSession = new UserSession(
       user = user,
-      host = false
+      host = false,
+      gameLobby = this
     )
     users += (user.id -> userSession)
+    PodManager.registerUserToGame(user, id)
     addToQueue(LobbyUpdate)
     userSession
   }
@@ -156,7 +159,14 @@ class GameLobby private(
     if (sessionOpt.isEmpty) {
       throw new NotInThisGameException("You are not in this game!")
     }
+    if (sessionOpt.get.host) {
+      logic.invoke(SessionClosed())
+      users.clear()
+      PodManager.removeGame(id)
+      return
+    }
     users.remove(userId)
+    PodManager.unregisterUserFromGame(sessionOpt.get.user)
     addToQueue(LobbyUpdate)
   }
 
@@ -338,7 +348,8 @@ object GameLobby {
     )
     lobby.users += (host.id -> new UserSession(
       user = host,
-      host = true
+      host = true,
+      gameLobby = lobby
     ))
     lobby
   }