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

namespace MonoGame.Extended.Particles.Serialization;

public class TimeSpanJsonConverter : JsonConverter<TimeSpan>
{
    /// <inheritdoc />
    public override bool CanConvert(Type typeToConvert) => typeToConvert == typeof(TimeSpan);

    /// <inheritdoc />
    public override TimeSpan Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
    {
        if (reader.TokenType == JsonTokenType.Number)
        {
            double seconds = reader.GetDouble();
            return TimeSpan.FromSeconds(seconds);
        }

        return TimeSpan.Zero;
    }

    /// <inheritdoc />
    /// <exception cref="ArgumentNullException">
    /// Throw if <paramref name="writer"/> is <see langword="null"/>.
    /// </exception>
    public override void Write(Utf8JsonWriter writer, TimeSpan value, JsonSerializerOptions options)
    {
        ArgumentNullException.ThrowIfNull(writer);
        writer.WriteNumberValue(value.TotalSeconds);
    }
}