JpnCardsPokemon.Sdk/Api/CardPrice.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Text.Json.Serialization;
+using JpnCardsPokemon.Sdk.Utils.JsonConverter;
 
 namespace JpnCardsPokemon.Sdk.Api;
 
@@ -38,6 +39,7 @@ public class CardPrice
     ///     Date when the price information was updated last.
     /// </summary>
     [JsonPropertyName("dateUpdated")]
+    [JsonConverter(typeof(CustomDateTimeConverter))]
     public DateTime? UpdatedDate { get; set; }
 
     /// <summary>

JpnCardsPokemon.Sdk/Utils/JsonConverter/CustomDateTimeConverter.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace JpnCardsPokemon.Sdk.Utils.JsonConverter
+{
+    internal class CustomDateTimeConverter : JsonConverter<DateTime?>
+    {
+        private readonly string _dateTimeFormat = "MM/dd/yyyy";
+
+        public override DateTime? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            switch (reader.TokenType)
+            {
+                case JsonTokenType.Null:
+                    return null;
+                case JsonTokenType.String:
+                {
+                    var dateString = reader.GetString();
+                    if (DateTime.TryParseExact(dateString, _dateTimeFormat, null, System.Globalization.DateTimeStyles.None, out var dateTime))
+                    {
+                        return dateTime;
+                    }
+
+                    break;
+                }
+                default:
+                    throw new JsonException($"Cannot convert {reader.GetString()} to DateTime.");
+            }
+
+            throw new JsonException($"Cannot convert {reader.GetString()} to DateTime.");
+        }
+
+        public override void Write(Utf8JsonWriter writer, DateTime? value, JsonSerializerOptions options)
+        {
+            if (value.HasValue)
+            {
+                writer.WriteStringValue(value.Value.ToString(_dateTimeFormat));
+            }
+            else
+            {
+                writer.WriteNullValue();
+            }
+        }
+    }
+}