‼️ Ajout du nécessaire pour implémenter la persistance et son management au sein de toute les autres vues

source/Trek-12/Trek-12/App.xaml.cs

@@ -1,28 +1,58 @@
-using DataContractPersistence;
+using System.Diagnostics;
+using System.Runtime.Serialization.DataContracts;
+using DataContractPersistence;
 using Models.Game;
+using Models.Interfaces;
 
 namespace Trek_12
 {
     public partial class App : Application
     {
         public string FileName { get; set; } = "data.json";
-            
-        public string FilePath { get; set; } = Path.Combine(AppDomain.CurrentDomain.BaseDirectory);
+
+        public string FilePath { get; set; } = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Trek_12");
 
         public Game Manager { get; private set; }
-        
+
         public App()
         {
             InitializeComponent();
-            
-            if(File.Exists(Path.Combine(FilePath, FileName)))
+
+            Manager = new Game(new DataContractJson());
+
+            if (!Directory.Exists(FilePath))
+            {
+                Directory.CreateDirectory(FilePath);
+            }
+
+            //File.Delete(Path.Combine(FilePath, FileName));
+
+            string fullPath = Path.Combine(FilePath, FileName);
+            if (File.Exists(fullPath))
             {
-                Manager = new Game(new DataContractJson());
+                Debug.WriteLine("Data loaded from " + fullPath);
+                Manager.LoadData();
             }
-            
-            Manager.LoadData();
+
 
             MainPage = new AppShell();
+
+            // If the MainPage is closed, we save the data
+            MainPage.Disappearing += (sender, e) =>
+            {
+                Debug.WriteLine("Saving data...");
+                Manager.SaveData();
+            };
+
+        }
+
+        /// <summary>
+        /// Save the data when the app is in background
+        /// </summary>
+        protected override void OnSleep()
+        {
+            Debug.WriteLine("Zzz Secure save...");
+            Manager.SaveData();
         }
     }
 }