namespace OpenAC.MosswartMassacre.Infrastructure;

/// <summary>
/// Wall-clock time for everything the plugin stamps or measures. The backend
/// frames carry UTC timestamps and the kill-rate maths uses local time, the
/// same split the original plugin had; tests substitute a fixed clock.
/// </summary>
internal interface IClock
{
    DateTime UtcNow { get; }

    DateTime Now { get; }
}

internal sealed class SystemClock : IClock
{
    public static SystemClock Instance { get; } = new();

    private SystemClock()
    {
    }

    public DateTime UtcNow => DateTime.UtcNow;

    public DateTime Now => DateTime.Now;
}