first commit

Helpers/DeserializePayload.cs

@@ -0,0 +1,31 @@
+using System.Text.Json;
+using Fitness_core_BE.Exceptions;
+
+namespace Fitness_core_BE.Helpers
+{
+    public static class DeserializePayload
+    {
+        public static Dictionary<string, JsonElement> Deserialize(object payload)
+        {
+            ArgumentNullException.ThrowIfNull(payload);
+            var json = JsonSerializer.Serialize(payload);
+            return JsonSerializer.Deserialize<Dictionary<string, JsonElement>>(json)
+                   ?? throw new BadRequestException("Failed to deserialize payload.");
+        }
+
+        public static T? DeserializeJson<T>(string? json) where T : class
+        {
+            if (string.IsNullOrWhiteSpace(json))
+                return null;
+
+            try
+            {
+                return JsonSerializer.Deserialize<T>(json);
+            }
+            catch
+            {
+                return null;
+            }
+        }
+    }
+}