Toak/Core/StateTracker.cs

using Toak.Core.Interfaces;

namespace Toak.Core;

public class StateTracker : IRecordingStateTracker
{
    private readonly string StateFilePath = Path.Combine(Path.GetTempPath(), "toak_state.pid");

    public bool IsRecording()
    {
        return File.Exists(StateFilePath);
    }

    public void SetRecording(int ffmpegPid)
    {
        Logger.LogDebug($"Setting recording state with PID {ffmpegPid}");
        File.WriteAllText(StateFilePath, ffmpegPid.ToString());
    }

    public int? GetRecordingPid()
    {
        if (File.Exists(StateFilePath))
        {
            var content = File.ReadAllText(StateFilePath).Trim();
            if (int.TryParse(content, out var pid))
            {
                Logger.LogDebug($"Read recording PID {pid} from state file");
                return pid;
            }
        }
        return null;
    }

    public void ClearRecording()
    {
        if (File.Exists(StateFilePath))
        {
            Logger.LogDebug("Clearing recording state file");
            File.Delete(StateFilePath);
        }
    }
}