using System;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace Questionable.Model.Questing.Converter;

public sealed class QuestWorkConfigConverter : JsonConverter<QuestWorkValue>
{
	public override QuestWorkValue Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
	{
		if (reader.TokenType == JsonTokenType.Number)
		{
			return new QuestWorkValue(reader.GetByte());
		}
		if (reader.TokenType != JsonTokenType.StartObject)
		{
			throw new JsonException();
		}
		byte? high = null;
		byte? low = null;
		EQuestWorkMode mode = EQuestWorkMode.Bitwise;
		while (reader.Read())
		{
			switch (reader.TokenType)
			{
			case JsonTokenType.PropertyName:
			{
				string text = reader.GetString();
				if (text == null || !reader.Read())
				{
					throw new JsonException();
				}
				switch (text)
				{
				case "High":
					high = reader.GetByte();
					break;
				case "Low":
					low = reader.GetByte();
					break;
				case "Mode":
					mode = new QuestWorkModeConverter().Read(ref reader, typeof(EQuestWorkMode), options);
					break;
				default:
					throw new JsonException();
				}
				break;
			}
			case JsonTokenType.EndObject:
				return new QuestWorkValue(high, low, mode);
			default:
				throw new JsonException();
			}
		}
		throw new JsonException();
	}

	public override void Write(Utf8JsonWriter writer, QuestWorkValue value, JsonSerializerOptions options)
	{
		if (value != null && value.High.HasValue && value.Low.HasValue && value.Mode == EQuestWorkMode.Bitwise)
		{
			byte value2 = (byte)((value.High.Value << 4) + value.Low.Value);
			writer.WriteNumberValue(value2);
			return;
		}
		writer.WriteStartObject();
		if (value.High.HasValue)
		{
			writer.WriteNumber("High", value.High.Value);
		}
		if (value.Low.HasValue)
		{
			writer.WriteNumber("Low", value.Low.Value);
		}
		if (value.Mode != EQuestWorkMode.Bitwise)
		{
			writer.WritePropertyName("Mode");
			new QuestWorkModeConverter().Write(writer, value.Mode, options);
		}
		writer.WriteEndObject();
	}
}