namespace ClawdDotNet.Core.Tests.Infrastructure;

/// <summary>
/// A controllable <see cref="TimeProvider"/> for the time-dependent tests (R2 of the
/// test strategy). Deliberately lean: the tests drive the scanner directly via
/// <c>ScanOnceAsync</c>, they only need a fixed, adjustable clock.
/// </summary>
internal sealed class FakeTimeProvider : TimeProvider
{
    private DateTimeOffset _now;

    public FakeTimeProvider(DateTimeOffset start) => _now = start;

    public override DateTimeOffset GetUtcNow() => _now;

    public void SetUtcNow(DateTimeOffset value) => _now = value;

    public void Advance(TimeSpan delta) => _now += delta;
}