punish v6.8.18.0

Questionable.Model/Questionable.Model.Common.Converter/StringListOrValueConverter.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Questionable.Model.Common.Converter;
+
+public sealed class StringListOrValueConverter : JsonConverter<List<string>>
+{
+	public override List<string> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+	{
+		if (reader.TokenType == JsonTokenType.String)
+		{
+			return new List<string>(1) { reader.GetString() };
+		}
+		if (reader.TokenType != JsonTokenType.StartArray)
+		{
+			throw new JsonException();
+		}
+		reader.Read();
+		List<string> list = new List<string>();
+		while (reader.TokenType != JsonTokenType.EndArray)
+		{
+			list.Add(reader.GetString());
+			reader.Read();
+		}
+		return list;
+	}
+
+	public override void Write(Utf8JsonWriter writer, List<string>? value, JsonSerializerOptions options)
+	{
+		if (value == null)
+		{
+			writer.WriteNullValue();
+			return;
+		}
+		if (value.Count == 1)
+		{
+			writer.WriteStringValue(value[0]);
+			return;
+		}
+		writer.WriteStartArray();
+		foreach (string item in value)
+		{
+			writer.WriteStringValue(item);
+		}
+		writer.WriteEndArray();
+	}
+}