From 89ec6db68490f8739dd1f45412872340f018f493 Mon Sep 17 00:00:00 2001
From: cupsos <cupsos@gmail.com>
Date: Thu, 22 Dec 2022 11:00:55 +0900
Subject: [PATCH] Fix #121

---
 .../HTML5/EpochTimestampDateTimeConverter.cs  | 21 +++++++++++++++++++
 .../HTML5/HtmlNotificationData.cs             |  2 ++
 2 files changed, 23 insertions(+)
 create mode 100644 src/Majorsoft.Blazor.Components.Notifications/HTML5/EpochTimestampDateTimeConverter.cs

diff --git a/src/Majorsoft.Blazor.Components.Notifications/HTML5/EpochTimestampDateTimeConverter.cs b/src/Majorsoft.Blazor.Components.Notifications/HTML5/EpochTimestampDateTimeConverter.cs
new file mode 100644
index 00000000..a500a885
--- /dev/null
+++ b/src/Majorsoft.Blazor.Components.Notifications/HTML5/EpochTimestampDateTimeConverter.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Majorsoft.Blazor.Components.Notifications
+{
+    internal class EpochTimestampDateTimeConverter : JsonConverter<DateTime>
+    {
+        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            long ms = reader.GetInt64();
+            return DateTimeOffset.FromUnixTimeMilliseconds(ms).DateTime;
+        }
+
+        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
+        {
+            long ms = new DateTimeOffset(value).ToUnixTimeMilliseconds();
+            writer.WriteNumberValue(ms);
+        }
+    }
+}
diff --git a/src/Majorsoft.Blazor.Components.Notifications/HTML5/HtmlNotificationData.cs b/src/Majorsoft.Blazor.Components.Notifications/HTML5/HtmlNotificationData.cs
index 32cee5fd..a582dd63 100644
--- a/src/Majorsoft.Blazor.Components.Notifications/HTML5/HtmlNotificationData.cs
+++ b/src/Majorsoft.Blazor.Components.Notifications/HTML5/HtmlNotificationData.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Text.Json.Serialization;
 
 namespace Majorsoft.Blazor.Components.Notifications
 {
@@ -71,6 +72,7 @@ public abstract class HtmlNotificationData
 		/// <summary>
 		/// Specifies the time at which a notification is created or applicable (past, present, or future).
 		/// </summary>
+		[JsonConverter(typeof(EpochTimestampDateTimeConverter))]
 		public DateTime Timestamp { get; set; } = DateTime.UtcNow;
 
 		/// <summary>