using BenchmarkDotNet.Attributes;
using System.Text.Json;
using System.Text.Json.Serialization;

public class StjPerfValidation
{
    private byte[] _smallJson;
    private byte[] _nestedJson;
    private JsonSerializerOptions _options;

    public enum Color { Red, Green, Blue, Yellow, Cyan, Magenta, White, Black }

    public class SmallPoco
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public bool Active { get; set; }
        public double Score { get; set; }
    }

    [GlobalSetup]
    public void Setup()
    {
        _smallJson = JsonSerializer.SerializeToUtf8Bytes(new SmallPoco { Id = 42, Name = "test", Active = true, Score = 3.14 });
        _nestedJson = JsonSerializer.SerializeToUtf8Bytes(new { a = new { b = 1, c = "hello" }, d = new[] { 1, 2, 3 }, e = true, f = 0.0 });
        _options = new JsonSerializerOptions { Converters = { new JsonStringEnumConverter() } };
    }

    [Benchmark]
    public SmallPoco Deserialize_SmallPoco() => JsonSerializer.Deserialize<SmallPoco>(_smallJson);

    [Benchmark]
    public void Reader_TokenScan()
    {
        var reader = new Utf8JsonReader(_nestedJson);
        while (reader.Read()) { }
    }

    [Benchmark]
    public byte[] Serialize_SmallPoco() => JsonSerializer.SerializeToUtf8Bytes(new SmallPoco { Id = 42, Name = "test", Active = true, Score = 3.14 });

    [Benchmark]
    public Color Deserialize_Enum() => JsonSerializer.Deserialize<Color>("\"Blue\"", _options);

    [Benchmark]
    public string Serialize_Enum() => JsonSerializer.Serialize(Color.Green, _options);
}