chore: upgrade versions and rename folders

src/main/kotlin/eventDemo/domain/command/action/IamReadyToPlay.kt

@@ -0,0 +1,36 @@
+package eventDemo.domain.command.action
+
+import eventDemo.domain.command.CommandException
+import eventDemo.domain.command.command.IamReadyToPlayCommand
+import eventDemo.domain.event.event.PlayerReadyEvent
+import eventDemo.domain.event.projection.GameStateRepository
+
+/**
+ * A command to set as ready to play
+ */
+class IamReadyToPlay(
+  private val gameStateRepository: GameStateRepository,
+) : CommandAction<IamReadyToPlayCommand, PlayerReadyEvent> {
+  @Throws(CommandException::class)
+  override fun run(command: IamReadyToPlayCommand): (version: Int) -> PlayerReadyEvent {
+    val state = gameStateRepository.get(command.payload.aggregateId)
+    val playerExist: Boolean = state.players.contains(command.payload.player)
+    val playerIsAlreadyReady: Boolean = state.readyPlayers.contains(command.payload.player)
+
+    if (state.isStarted) {
+      throw CommandException("The game is already started")
+    } else if (!playerExist) {
+      throw CommandException("You are not in the game")
+    } else if (playerIsAlreadyReady) {
+      throw CommandException("You are already ready")
+    } else {
+      return { version: Int ->
+        PlayerReadyEvent(
+          aggregateId = command.payload.aggregateId,
+          player = command.payload.player,
+          version = version,
+        )
+      }
+    }
+  }
+}