Refactor file path retrieval for settings and customer data.

Replaced hardcoded file paths with a method that retrieves the parent directory, ensuring consistency and maintainability. This change affects methods for loading and saving JSON data in both SettingsData and CustomerData classes.

Server/Data/CustomerData.cs

@@ -14,11 +14,18 @@ namespace Server.Data
 
         #endregion
 
-        #region Private Properties
+        
+        /// <summary>
+        /// Retrieves the file path for the settings JSON file.
+        /// </summary>
+        /// <returns>The file path of the settings JSON file as a string.</returns>
+        private static string GetFilePath()
+        {
+            var parentDirectory = Directory.GetParent(Directory.GetCurrentDirectory());
+            if (parentDirectory == null) return "Customers.json";
 
-        private static string FileName => "Customers.json";
-
-        #endregion
+            return Path.Combine(parentDirectory.FullName, "Customers.json");
+        }
 
         #region Public Method LoadAsync
 
@@ -30,8 +37,8 @@ namespace Server.Data
         /// </return>
         public static async Task LoadAsync()
         {
-            if (!File.Exists(FileName)) return;
-            var jsonString = await File.ReadAllTextAsync(FileName);
+            if (!File.Exists(GetFilePath())) return;
+            var jsonString = await File.ReadAllTextAsync(GetFilePath());
             var deserialized = JsonSerializer.Deserialize<CustomerData>(jsonString)!;
 
             Instance = deserialized;
@@ -50,7 +57,7 @@ namespace Server.Data
         public static async Task SaveAsync()
         {
             var jsonString = JsonSerializer.Serialize(Instance, new JsonSerializerOptions { WriteIndented = true, DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull });
-            await File.WriteAllTextAsync(FileName, jsonString);
+            await File.WriteAllTextAsync(GetFilePath(), jsonString);
         }
 
         #endregion