race condition fix

server/src/main/kotlin/commands/ShowCommand.kt

@@ -1,20 +1,21 @@
 package commands
 
-import collection.CollectionManager
+import database.Repository
 import kotlinx.serialization.Contextual
 import kotlinx.serialization.Serializable
 import models.HumanBeing
 import network.Response
 
 @Serializable
-class ShowCommand(@Contextual private val manager: CollectionManager) : Command {
+class ShowCommand(@Contextual private val repository: Repository) : Command {
     override val name = "show"
     override val description = "вывести все элементы коллекции"
     override val type = CommandType.SIMPLE
     override val args = listOf(CommandArgType.NONE)
 
     override fun execute(args: List<String>, humanBeing: HumanBeing?, userId: String): Response {
-        if (manager.isEmpty()) return Response(true, "Коллекция пуста.")
-        return Response(true, manager.getAll().joinToString("\n") { it.toString() })
+        val all = repository.getAll()
+        if (all.isEmpty()) return Response(true, "Коллекция пуста.")
+        return Response(true, all.joinToString("\n") { it.toString() })
     }
 }