Move file and add interface to improve Archi Hexa

src/main/kotlin/eventDemo/business/command/action/ICantPlay.kt

@@ -0,0 +1,36 @@
+package eventDemo.business.command.action
+
+import eventDemo.business.command.CommandException
+import eventDemo.business.command.command.ICantPlayCommand
+import eventDemo.business.event.event.PlayerHavePassEvent
+import eventDemo.business.event.projection.GameStateRepository
+
+/**
+ * A command to perform an action to play a new card
+ */
+data class ICantPlay(
+  private val gameStateRepository: GameStateRepository,
+) : CommandAction<ICantPlayCommand, PlayerHavePassEvent> {
+  override fun run(command: ICantPlayCommand): (version: Int) -> PlayerHavePassEvent {
+    val state = gameStateRepository.getLast(command.payload.aggregateId)
+
+    if (state.currentPlayerTurn != command.payload.player) {
+      throw CommandException("Its not your turn!")
+    }
+
+    val playableCards = state.playableCards(command.payload.player)
+    if (playableCards.isNotEmpty()) {
+      throw CommandException("You can and must play one card, like ${playableCards.first()::class.simpleName}")
+    }
+
+    val takenCard = state.deck.stack.first()
+    return { version ->
+      PlayerHavePassEvent(
+        aggregateId = command.payload.aggregateId,
+        player = command.payload.player,
+        takenCard = takenCard,
+        version = version,
+      )
+    }
+  }
+}