--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GeoQuiz/Logic/PersistenceController.swift	Thu Oct 20 13:49:42 2022 +0200
@@ -0,0 +1,55 @@
+//
+//  PersistenceController.swift
+//  GeoQuiz
+//
+//  Created by Dennis Concepción Martín on 19/10/22.
+//
+
+import CoreData
+import Foundation
+
+class PersistenceController: ObservableObject {
+    
+    // Create mock data for previews
+    static var preview: PersistenceController = {
+        let result = PersistenceController()
+        let viewContext = result.container.viewContext
+        
+//        for _ in 0..<10 {
+//            let playedGame = PlayedGame(context: viewContext)
+//            playedGame.id = UUID()
+//            playedGame.type = GameType(rawValue: Int16.random(in: 0...3))!
+//            playedGame.score = Int32.random(in: 0...50)
+//            playedGame.date = Date()
+//            
+//            if playedGame.type == .guessTheFlag || playedGame.type == .guessTheCapital {
+//                playedGame.correctAnswers = ["Bangladesh", "Belgium", "Burkina Faso", "Bermuda", "Jamaica"]
+//                playedGame.wrongAnswers = ["Belarus", "Russia"]
+//            } else {
+//                playedGame.correctAnswers = ["Herat", "Lobito", "Darregueira", "San Juan"]
+//                playedGame.wrongAnswers = ["San Luis", "Oranjestad"]
+//            }
+//        }
+        do {
+            try viewContext.save()
+        } catch {
+            let nsError = error as NSError
+            fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
+        }
+        return result
+        
+    }()
+    
+    // Initialize container
+    let container = NSPersistentContainer(name: "GeoQuiz")
+    
+    init() {
+        container.loadPersistentStores { description, error in
+            if let error = error {
+                print("Core Data failed to load: \(error.localizedDescription)")
+            }
+        }
+        
+        container.viewContext.automaticallyMergesChangesFromParent = true
+    }
+}