Initial commit

Converters/EpochConverter.cs

@@ -0,0 +1,24 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace ChrisKaczor.FeverClient.Converters;
+
+public class EpochConverter : JsonConverter<DateTimeOffset>
+{
+    public override DateTimeOffset Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        if (reader.TokenType != JsonTokenType.Number)
+        {
+            throw new JsonException("Expected a numeric epoch timestamp");
+        }
+
+        var unixTimestamp = reader.GetInt64();
+        return DateTimeOffset.FromUnixTimeSeconds(unixTimestamp);
+    }
+
+    public override void Write(Utf8JsonWriter writer, DateTimeOffset value, JsonSerializerOptions options)
+    {
+        var unixTimestamp = value.ToUnixTimeSeconds();
+        writer.WriteNumberValue(unixTimestamp);
+    }
+}