add logs system

Core/DateTimeFixConverter.cs

@@ -0,0 +1,25 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace BMA.EHR.Recurit.Exam.Service.Core
+{
+    public class DateTimeFixConverter : JsonConverter<DateTime>
+    {
+        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            if (reader.TokenType == JsonTokenType.String)
+            {
+                if (DateTime.TryParse(reader.GetString(), out var date))
+                {
+                    return date;
+                }
+            }
+            throw new JsonException("Invalid date format.");
+        }
+
+        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
+        {
+            writer.WriteStringValue(value.ToString("yyyy-MM-dd"));
+        }
+    }
+}