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

namespace Supercell.Laser.Server.Database
{
    public class BigIntegerJsonConverter : JsonConverter<BigInteger>
    {
        public override BigInteger Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.String)
            {
                string s = reader.GetString();
                if (BigInteger.TryParse(s, out BigInteger result))
                    return result;
                return BigInteger.Zero;
            }
            if (reader.TokenType == JsonTokenType.Number)
            {
                if (reader.TryGetInt64(out long l))
                    return new BigInteger(l);
                return BigInteger.Zero;
            }
            return BigInteger.Zero;
        }

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