Move file and add interface to improve Archi Hexa

src/main/kotlin/eventDemo/adapter/interfaceLayer/ReadTheGameState.kt

@@ -0,0 +1,55 @@
+package eventDemo.adapter.interfaceLayer
+
+import eventDemo.business.entity.GameId
+import eventDemo.business.event.projection.GameStateRepository
+import eventDemo.configuration.GameIdSerializer
+import io.ktor.http.HttpStatusCode
+import io.ktor.resources.Resource
+import io.ktor.server.application.call
+import io.ktor.server.auth.authenticate
+import io.ktor.server.resources.get
+import io.ktor.server.response.respond
+import io.ktor.server.routing.Route
+import kotlinx.serialization.Serializable
+
+@Serializable
+@Resource("/game/{id}")
+class Game(
+  @Serializable(with = GameIdSerializer::class)
+  val id: GameId,
+) {
+  @Serializable
+  @Resource("card/last")
+  class Card(
+    val game: Game,
+  )
+
+  @Serializable
+  @Resource("state")
+  class State(
+    val game: Game,
+  )
+}
+
+/**
+ * API routes to read the game state.
+ */
+fun Route.readTheGameState(gameStateRepository: GameStateRepository) {
+  authenticate {
+    // Read the last played card on the game.
+    get<Game.Card> { body ->
+      gameStateRepository
+        .getLast(body.game.id)
+        .cardOnCurrentStack
+        ?.card
+        ?.let { call.respond(it) }
+        ?: call.response.status(HttpStatusCode.BadRequest)
+    }
+
+    // Read the last played card on the game.
+    get<Game.State> { body ->
+      val state = gameStateRepository.getLast(body.game.id)
+      call.respond(state)
+    }
+  }
+}