Initial commit

Converters/CommaSeparatedListConverter.cs

@@ -0,0 +1,25 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace ChrisKaczor.FeverClient.Converters;
+
+internal class CommaSeparatedListConverter : JsonConverter<IEnumerable<int>>
+{
+    public override IEnumerable<int> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        if (reader.TokenType != JsonTokenType.String)
+        {
+            throw new JsonException("Expected a string");
+        }
+
+        var commaSeparatedList = reader.GetString() ?? string.Empty;
+
+        return commaSeparatedList.Split(",").Select(int.Parse).AsEnumerable();
+    }
+
+    public override void Write(Utf8JsonWriter writer, IEnumerable<int> value, JsonSerializerOptions options)
+    {
+        var commaSeparatedList = string.Join(",", value);
+        writer.WriteStringValue(commaSeparatedList);
+    }
+}