using System.Buffers;
using System.Buffers.Text;
using System.Text.Json;

namespace Atomx.Utils.Json.Converts
{
	public class LongJsonConverter : System.Text.Json.Serialization.JsonConverter<long>
	{
		public override long Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
		{
			if (reader.TokenType == JsonTokenType.String)
			{
				ReadOnlySpan<byte> span = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan;
				if (Utf8Parser.TryParse(span, out long number, out int bytesConsumed) && span.Length == bytesConsumed)
				{
					return number;
				}

				if (long.TryParse(reader.GetString(), out number))
				{
					return number;
				}
			}

			return reader.GetInt64();
		}

		public override void Write(Utf8JsonWriter writer, long value, JsonSerializerOptions options)
		{
			writer.WriteStringValue(value.ToString());
		}
	}
}
