using System.Diagnostics;
using System.IO;

namespace ytLive.Services.Encoder;

/// <summary>
/// Seam around a spawned subprocess (the encoder's ffmpeg and the encoder probe).
/// Exposes the redirected stdin (binary frames), stdout (probe listing) and stderr
/// (progress lines) plus exit control, so the encoder logic never touches
/// <c>System.Diagnostics.Process</c> directly and tests can fake the whole thing.
/// </summary>
public interface IEncoderProcess : IDisposable
{
    void Start(ProcessStartInfo startInfo);

    /// <summary>Raw binary stdin — the encoder writes BGRA frames here.</summary>
    Stream StandardInput { get; }

    TextReader StandardOutput { get; }
    TextReader StandardError { get; }

    bool HasExited { get; }
    int ExitCode { get; }
    void Kill();
    Task WaitForExitAsync(CancellationToken cancellationToken = default);
}