using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using TeamAAS.Global.Devices;
using TeamAAS.Motion.Models;

namespace TeamAAS.Motion.Motions
{
    /// <summary>
    /// 仿真运动卡：无硬件环境下的全功能实现（联调/演示/单元测试用）。
    /// </summary>
    public class SimulatedMotionCard : IMotionCard, IMasterFollowHost, IMotionSimulation, IMotionSafetyHost, IMotionIoHost
    {
        private readonly MotionDeviceConfig _cfg;
        private int _axisCount;
        private IAxis[] _axes = Array.Empty<IAxis>();
        private Dictionary<int, IAxis> _axisMap = new Dictionary<int, IAxis>();
        private Dictionary<int, SimulatedAxis> _hwAxes = new Dictionary<int, SimulatedAxis>();
        private Dictionary<int, MotionAxisConfig> _axisCfgs = new Dictionary<int, MotionAxisConfig>();
        private readonly MasterFollowSession _follow = new MasterFollowSession();
        private readonly MotionSafetyGuard _guard;
        private readonly bool[] _localDi = new bool[64];
        private readonly bool[] _localDo = new bool[64];
        private readonly bool[] _ecatDi = new bool[256];
        private readonly bool[] _ecatDo = new bool[256];
        private Timer _updateTimer;
        private bool _isConnected;
        private readonly object _lock = new object();
        private const double UpdateIntervalMs = 10;

        public string Name => _cfg.Name;
        public bool IsConnected => _isConnected;
        public int AxisCount => _axisCount;
        public bool IsEstopActive => _guard.EstopActive;
        public bool IsStopActive => _guard.StopActive;
        internal MotionDeviceConfig DeviceConfig => _cfg;

        public event EventHandler<MotionConnectionStateChangedEventArgs> ConnectionStateChanged;
        public event EventHandler<MotionErrorEventArgs> ErrorOccurred;
        public event EventHandler SafetyChanged;

        public SimulatedMotionCard(MotionDeviceConfig cfg)
        {
            _cfg = cfg ?? new MotionDeviceConfig();
            RebuildAxes();
            _guard = new MotionSafetyGuard(
                () => _cfg,
                ReadDI,
                OnSafetyEstopRise,
                OnSafetyEstopHold,
                OnSafetyStopRise);
            _guard.Changed += (_, __) =>
            {
                try { SafetyChanged?.Invoke(this, EventArgs.Empty); }
                catch { }
            };
        }

        public bool AllowEnable(out string reason) => _guard.AllowEnable(out reason);
        public bool AllowMotion(out string reason) => _guard.AllowMotion(out reason);

        private bool RejectEnable()
        {
            if (_guard.AllowEnable(out var reason)) return false;
            RaiseError(reason);
            return true;
        }

        private bool RejectMotion()
        {
            if (_guard.AllowMotion(out var reason)) return false;
            RaiseError(reason);
            return true;
        }

        private void RaiseError(string message)
        {
            ErrorOccurred?.Invoke(this, new MotionErrorEventArgs(message));
        }

        private void OnSafetyEstopRise()
        {
            if (!_isConnected) return;
            EmergencyStop();
        }

        private void OnSafetyEstopHold()
        {
            if (!_isConnected) return;
            SimulatedAxis[] axes;
            lock (_lock)
            {
                if (!_isConnected) return;
                axes = _hwAxes.Values.ToArray();
            }
            foreach (var a in axes) a.Disable();
        }

        private void OnSafetyStopRise()
        {
            if (!_isConnected) return;
            Stop(-1);
        }

        public bool CanSimulateDi => true;

        public int GetDiCount(MotionIoBank bank)
            => bank == MotionIoBank.EtherCat
                ? ClampCount(_cfg.InputCount, _ecatDi.Length, 16)
                : ClampCount(_cfg.LocalInputCount, _localDi.Length, 16);

        public int GetDoCount(MotionIoBank bank)
            => bank == MotionIoBank.EtherCat
                ? ClampCount(_cfg.OutputCount, _ecatDo.Length, 16)
                : ClampCount(_cfg.LocalOutputCount, _localDo.Length, 16);

        private static int ClampCount(int configured, int max, int fallback)
        {
            if (configured <= 0) return Math.Min(fallback, max);
            return Math.Min(configured, max);
        }

        private static bool[] BankDi(MotionIoBank bank, bool[] local, bool[] ecat)
            => bank == MotionIoBank.EtherCat ? ecat : local;

        public bool ReadDI(int portIndex) => ReadDI(MotionIoBank.Local, portIndex);

        public bool ReadDI(MotionIoBank bank, int index)
        {
            var bits = BankDi(bank, _localDi, _ecatDi);
            if (index < 0 || index >= bits.Length) return false;
            return bits[index];
        }

        public bool ReadDO(MotionIoBank bank, int index)
        {
            var bits = BankDi(bank, _localDo, _ecatDo);
            if (index < 0 || index >= bits.Length) return false;
            return bits[index];
        }

        public bool WriteDO(int portIndex, bool value) => WriteDO(MotionIoBank.Local, portIndex, value);

        public bool WriteDO(MotionIoBank bank, int index, bool value)
        {
            var bits = BankDi(bank, _localDo, _ecatDo);
            if (index < 0 || index >= bits.Length) return false;
            bits[index] = value;
            return true;
        }

        public bool WriteDI(MotionIoBank bank, int index, bool value)
        {
            var bits = BankDi(bank, _localDi, _ecatDi);
            if (index < 0 || index >= bits.Length) return false;
            bits[index] = value;
            return true;
        }

        public void ReloadFromConfig()
        {
            lock (_lock)
            {
                _follow.Clear();
                RebuildAxes();
            }
        }

        public bool Open()
        {
            lock (_lock)
            {
                if (_isConnected)
                {
                    EnsureTimerUnlocked();
                    return true;
                }
                _isConnected = true;
                EnsureTimerUnlocked();
            }
            _guard.Start();
            ConnectionStateChanged?.Invoke(this, new MotionConnectionStateChangedEventArgs(true));
            return true;
        }

        public void Simulate(double deltaSeconds)
        {
            if (deltaSeconds <= 0) return;
            SimulatedAxis[] axes;
            lock (_lock)
            {
                if (!_isConnected) return;
                EnsureTimerUnlocked();
                axes = _hwAxes.Values.ToArray();
            }
            foreach (var axis in axes)
                axis.Update(deltaSeconds);
        }

        public void FinishDiscreteMoves()
        {
            SimulatedAxis[] axes;
            lock (_lock)
            {
                if (!_isConnected) return;
                axes = _hwAxes.Values.ToArray();
            }
            double dt = 0;
            foreach (var axis in axes)
                dt = Math.Max(dt, axis.RemainingDiscreteSeconds());
            if (dt > 0)
                Simulate(dt + 1e-6);
            else
            {
                foreach (var axis in axes)
                    axis.SnapDiscreteIfIdleVelocity();
            }
        }

        private void EnsureTimerUnlocked()
        {
            if (!_isConnected) return;
            if (_updateTimer != null) return;
            _updateTimer = new Timer(UpdateAxes, null, 0, (int)UpdateIntervalMs);
        }

        public void Close()
        {
            _guard.Stop();
            Timer timerToDispose = null;
            lock (_lock)
            {
                if (!_isConnected) return;
                _isConnected = false;
                timerToDispose = _updateTimer;
                _updateTimer = null;
                _follow.Clear();
            }
            timerToDispose?.Dispose();
            ConnectionStateChanged?.Invoke(this, new MotionConnectionStateChangedEventArgs(false));
        }

        void IMasterFollowHost.BeginSoloMasterFollow(int masterAxisNo, IEnumerable<IAxis> slaves)
            => _follow.Begin(masterAxisNo, slaves);

        void IMasterFollowHost.ReleaseMasterFollow() => _follow.Release();

        IDisposable IMasterFollowHost.SuspendFollowRelease() => _follow.Suspend();

        internal MotionAxisConfig GetAxisConfig(int axisNo)
        {
            if (_axisCfgs.TryGetValue(axisNo, out var cfg) && cfg != null)
                return cfg;
            return new MotionAxisConfig { AxisNo = axisNo };
        }

        private void ReleaseFollowIfIndependent(int axis)
        {
            if (_follow.Suspended || _follow.IsReleasing) return;
            if (axis >= 0 && TryCombined(axis, out _)) return;
            _follow.Release();
        }

        public bool SetEnable(int axis, bool enable)
        {
            if (enable && RejectEnable()) return false;
            if (!_isConnected) return false;
            if (axis < 0)
            {
                foreach (var a in _hwAxes.Values) { if (enable) a.Enable(); else a.Disable(); }
                return true;
            }
            if (TryCombined(axis, out var combined))
            {
                if (enable) combined.Enable(); else combined.Disable();
                return true;
            }
            if (!_hwAxes.TryGetValue(axis, out var hw)) return false;
            if (enable) hw.Enable(); else hw.Disable();
            return true;
        }

        public bool Home(int axis, int mode = 0)
        {
            if (RejectMotion()) return false;
            if (!_isConnected || !IsValidAxis(axis)) return false;
            if (TryCombined(axis, out var combined))
            {
                combined.Home((HomeMode)mode);
                return true;
            }
            ReleaseFollowIfIndependent(axis);
            if (!_hwAxes.TryGetValue(axis, out var hw)) return false;
            hw.Home((HomeMode)mode);
            return true;
        }

        public bool IsHomed(int axis)
        {
            if (!IsValidAxis(axis)) return false;
            return _axisMap[axis].IsHomed;
        }

        public bool MoveAbsolute(int axis, double position, double velocity)
        {
            if (RejectMotion()) return false;
            if (!_isConnected || !IsValidAxis(axis)) return false;
            if (TryCombined(axis, out var combined))
            {
                combined.Velocity = velocity;
                combined.MoveTo(position);
                return true;
            }
            ReleaseFollowIfIndependent(axis);
            var a = _axisMap[axis];
            var cfg = GetAxisConfig(axis);
            a.Velocity = Math.Abs(cfg.ClampVelocity(velocity));
            a.MoveTo(cfg.ClampPosition(position));
            return true;
        }

        public bool MoveRelative(int axis, double distance, double velocity)
        {
            if (RejectMotion()) return false;
            if (!_isConnected || !IsValidAxis(axis)) return false;
            if (TryCombined(axis, out var combined))
            {
                combined.Velocity = velocity;
                combined.MoveBy(distance);
                return true;
            }
            ReleaseFollowIfIndependent(axis);
            var a = _axisMap[axis];
            var cfg = GetAxisConfig(axis);
            a.Velocity = Math.Abs(cfg.ClampVelocity(velocity));
            double target = cfg.ClampPosition(a.CommandPosition + distance);
            a.MoveTo(target);
            return true;
        }

        public bool JogStart(int axis, int direction, double velocity)
        {
            if (RejectMotion()) return false;
            if (!_isConnected || !IsValidAxis(axis)) return false;
            if (TryCombined(axis, out var combined))
            {
                combined.Jog((direction >= 0 ? 1 : -1) * Math.Abs(velocity));
                return true;
            }
            ReleaseFollowIfIndependent(axis);
            var dir = direction >= 0 ? 1 : -1;
            var axisObj = _axisMap[axis];
            double vel = GetAxisConfig(axis).ClampJog(dir * Math.Abs(velocity), axisObj.CommandPosition);
            axisObj.Jog(vel);
            return true;
        }

        public bool JogStop(int axis)
        {
            if (!IsValidAxis(axis)) return false;
            return Stop(axis);
        }

        public bool Stop(int axis = -1)
        {
            if (!_isConnected) return false;
            if (axis < 0)
            {
                _follow.Release();
                foreach (var a in _hwAxes.Values) a.Stop();
                return true;
            }
            if (!IsValidAxis(axis)) return false;
            if (TryCombined(axis, out var combined))
            {
                combined.Stop();
                return true;
            }
            ReleaseFollowIfIndependent(axis);
            _axisMap[axis].Stop();
            return true;
        }

        public AxisStatus GetAxisStatus(int axis)
        {
            if (!IsValidAxis(axis)) return null;
            var a = _axisMap[axis];
            return new AxisStatus
            {
                Index = axis,
                Name = a.Name,
                Position = a.ActualPosition,
                Velocity = a.ActualVelocity,
                IsMoving = a.IsMoving,
                IsHomed = a.IsHomed,
                IsEnabled = a.IsEnabled
            };
        }

        public List<AxisStatus> GetAllAxisStatus()
        {
            var list = new List<AxisStatus>(_axes.Length);
            foreach (var a in _axes)
                list.Add(GetAxisStatus(a.AxisNo));
            return list;
        }

        public IAxis GetAxis(int axisNo)
        {
            if (!IsValidAxis(axisNo))
                throw new ArgumentOutOfRangeException(nameof(axisNo), "轴号超出范围");
            return _axisMap[axisNo];
        }

        public IList<IAxis> GetAxes() => _axes.ToList();

        public bool MoveLinear(double[] targetPositions, double velocity)
        {
            if (RejectMotion()) return false;
            if (!_isConnected || targetPositions == null) return false;
            _follow.Release();
            var hw = _hwAxes.Values.OrderBy(a => a.AxisNo).ToList();
            if (targetPositions.Length > hw.Count) return false;
            for (int i = 0; i < targetPositions.Length; i++)
            {
                var cfg = GetAxisConfig(hw[i].AxisNo);
                hw[i].Velocity = Math.Abs(cfg.ClampVelocity(velocity));
                hw[i].MoveTo(cfg.ClampPosition(targetPositions[i]));
            }
            return true;
        }

        public bool MoveArc(double[] centerPoint, double[] targetPositions, double velocity)
            => MoveLinear(targetPositions, velocity);

        public bool EmergencyStop()
        {
            if (!_isConnected) return false;
            _follow.Clear();
            foreach (var axis in _hwAxes.Values) axis.Stop();
            return true;
        }

        private bool IsValidAxis(int axis) => _axisMap.ContainsKey(axis);

        private bool TryCombined(int axis, out CombinedMotionAxis combined)
        {
            combined = null;
            if (_axisMap.TryGetValue(axis, out var a) && a is CombinedMotionAxis c)
            {
                combined = c;
                return true;
            }
            return false;
        }

        private void RebuildAxes()
        {
            _follow.Clear();
            var oldHw = _hwAxes;
            var cfgs = MotionAxisCatalog.GetEffective(_cfg);
            _hwAxes = new Dictionary<int, SimulatedAxis>();
            _axisCfgs = new Dictionary<int, MotionAxisConfig>();
            _axisMap = new Dictionary<int, IAxis>();
            var view = new List<IAxis>(cfgs.Count);

            foreach (var cfg in cfgs)
            {
                var axis = new SimulatedAxis(this, cfg.AxisNo)
                {
                    Name = string.IsNullOrWhiteSpace(cfg.Name) ? $"Axis-{cfg.AxisNo}" : cfg.Name,
                    Velocity = cfg.Velocity,
                    Acceleration = cfg.Acceleration,
                    Deceleration = cfg.Deceleration,
                    Jerk = cfg.Jerk
                };
                if (oldHw != null && oldHw.TryGetValue(cfg.AxisNo, out var prev))
                {
                    axis.SetPosition(prev.ActualPosition);
                }
                _hwAxes[cfg.AxisNo] = axis;
                _axisMap[cfg.AxisNo] = axis;
                _axisCfgs[cfg.AxisNo] = cfg;
                axis.BindSafety(cfg);
            }

            foreach (var cfg in cfgs)
            {
                if (cfg.IsGrouped && _hwAxes.TryGetValue(cfg.AxisNo, out var master))
                {
                    var combined = new CombinedMotionAxis(this, cfg, master, no =>
                        _hwAxes.TryGetValue(no, out var a) ? a : null);
                    _axisMap[cfg.AxisNo] = combined;
                    view.Add(combined);
                }
                else if (_axisMap.TryGetValue(cfg.AxisNo, out var hw))
                {
                    view.Add(hw);
                }
            }

            _axes = view.ToArray();
            _axisCount = _axes.Length;
        }

        private void UpdateAxes(object state)
        {
            Simulate(UpdateIntervalMs / 1000.0);
        }
    }

    public class SimulatedAxis : IAxis
    {
        private readonly SimulatedMotionCard _owner;
        private readonly object _lock = new object();
        private AxisState _state = AxisState.Off;
        private bool _isEnabled;
        private bool _isMoving;
        private bool _isHomed;
        private double _commandPos;
        private double _actualPos;
        private double _actualVel;
        private double _targetPos;
        private double _velocity = 100.0;
        private double _accel = 500.0;
        private double _decel = 500.0;
        private double _jerk = 1000.0;
        private double _jogVelocity;
        private MotionAxisConfig _safety = new MotionAxisConfig();

        public int AxisNo { get; }
        public string Name { get; set; }

        public AxisState State => _state;
        public bool IsEnabled => _isEnabled;
        public bool IsMoving => _isMoving;
        public bool IsHomed => _isHomed;
        public double CommandPosition => _commandPos;
        public double ActualPosition => _actualPos;
        public double ActualVelocity => _actualVel;

        public double Velocity { get => _velocity; set => _velocity = value; }
        public double Acceleration { get => _accel; set => _accel = value; }
        public double Deceleration { get => _decel; set => _decel = value; }
        public double Jerk { get => _jerk; set => _jerk = value; }

        public event EventHandler<AxisMotionEventArgs> MotionStarted;
        public event EventHandler<AxisMotionEventArgs> MotionCompleted;
        public event EventHandler<AxisStateChangedEventArgs> StateChanged;
        public event EventHandler<AxisErrorEventArgs> ErrorOccurred;

        public SimulatedAxis(SimulatedMotionCard owner, int axisNo)
        {
            _owner = owner;
            AxisNo = axisNo;
            Name = $"Axis-{axisNo}";
        }

        internal void BindSafety(MotionAxisConfig cfg)
        {
            _safety = cfg ?? new MotionAxisConfig { AxisNo = AxisNo };
        }

        internal double RemainingDiscreteSeconds()
        {
            lock (_lock)
            {
                if (!_isMoving || _state != AxisState.DiscreteMotion) return 0;
                if (_velocity < 1e-9) return 0;
                return Math.Abs(_targetPos - _actualPos) / _velocity;
            }
        }

        internal void SnapDiscreteIfIdleVelocity()
        {
            lock (_lock)
            {
                if (!_isMoving || _state != AxisState.DiscreteMotion) return;
                _actualPos = _targetPos;
                _commandPos = _targetPos;
                _actualVel = 0;
                _isMoving = false;
                SetState(AxisState.StandStill);
                OnMotionCompleted(new AxisMotionEventArgs(AxisNo, _targetPos, _actualPos));
            }
        }

        internal void Update(double deltaTime)
        {
            lock (_lock)
            {
                if (!_isEnabled || _state == AxisState.Error || _state == AxisState.Off)
                    return;

                if (_state == AxisState.ContinuousMotion && Math.Abs(_jogVelocity) > 0.0001)
                {
                    double delta = _jogVelocity * deltaTime;
                    double next = _safety.ClampPosition(_actualPos + delta);
                    if (Math.Abs(next - _actualPos) < 1e-9)
                    {
                        _jogVelocity = 0;
                        _actualVel = 0;
                        SetState(AxisState.StandStill);
                        _isMoving = false;
                        OnMotionCompleted(new AxisMotionEventArgs(AxisNo, _actualPos, _actualPos));
                        return;
                    }
                    _commandPos = next;
                    _actualPos = next;
                    _actualVel = _jogVelocity;
                    return;
                }

                if (_state == AxisState.DiscreteMotion)
                {
                    double remaining = _targetPos - _actualPos;
                    double distance = Math.Abs(remaining);
                    if (distance < 0.0001)
                    {
                        _actualPos = _targetPos;
                        _commandPos = _targetPos;
                        _actualVel = 0;
                        SetState(AxisState.StandStill);
                        _isMoving = false;
                        OnMotionCompleted(new AxisMotionEventArgs(AxisNo, _targetPos, _actualPos));
                        return;
                    }

                    double speed = Math.Sign(remaining) * Math.Max(_velocity, 1e-6);
                    double step = speed * deltaTime;
                    if (Math.Abs(step) > Math.Abs(remaining) || _velocity < 1e-9)
                        step = remaining;
                    _actualPos += step;
                    _commandPos = _actualPos;
                    _actualVel = deltaTime > 1e-12 ? step / deltaTime : 0;
                }
            }
        }

        private void StartMoveTo(double target)
        {
            if (_owner != null && !_owner.AllowMotion(out var reason))
            {
                OnError(reason);
                return;
            }
            lock (_lock)
            {
                if (!_isEnabled) { OnError("轴未使能，无法运动"); return; }
                if (_state == AxisState.Error) { OnError("轴处于错误状态"); return; }

                _velocity = Math.Abs(_safety.ClampVelocity(_velocity));
                _targetPos = _safety.ClampPosition(target);
                _jogVelocity = 0;
                if (Math.Abs(_targetPos - _actualPos) < 0.0001 || _velocity < 1e-9)
                {
                    _actualPos = _targetPos;
                    _commandPos = _targetPos;
                    _actualVel = 0;
                    _isMoving = false;
                    SetState(AxisState.StandStill);
                    OnMotionCompleted(new AxisMotionEventArgs(AxisNo, _targetPos, _actualPos));
                    return;
                }

                SetState(AxisState.DiscreteMotion);
                _isMoving = true;
                OnMotionStarted(new AxisMotionEventArgs(AxisNo, _targetPos, _actualPos));
            }
        }

        public void Enable()
        {
            if (_owner != null && !_owner.AllowEnable(out var reason))
            {
                OnError(reason);
                return;
            }
            lock (_lock)
            {
                if (_isEnabled) return;
                _isEnabled = true;
                if (_state == AxisState.Off) SetState(AxisState.StandStill);
            }
        }

        public void Disable()
        {
            lock (_lock)
            {
                if (!_isEnabled) return;
                _isMoving = false;
                _jogVelocity = 0;
                SetState(AxisState.Off);
                _isEnabled = false;
            }
        }

        public void MoveTo(double position) => StartMoveTo(position);
        public void MoveBy(double distance) => StartMoveTo(_actualPos + distance);

        public void Jog(double velocity)
        {
            if (_owner != null && !_owner.AllowMotion(out var reason))
            {
                OnError(reason);
                return;
            }
            lock (_lock)
            {
                if (!_isEnabled) { OnError("轴未使能，无法点动"); return; }
                if (_state == AxisState.Error) { OnError("轴处于错误状态"); return; }
                _jogVelocity = _safety.ClampJog(velocity, _actualPos);
                if (Math.Abs(_jogVelocity) < 1e-9)
                {
                    _isMoving = false;
                    _actualVel = 0;
                    SetState(AxisState.StandStill);
                    return;
                }
                SetState(AxisState.ContinuousMotion);
                _isMoving = true;
                _actualVel = _jogVelocity;
                OnMotionStarted(new AxisMotionEventArgs(AxisNo, double.NaN, _actualPos));
            }
        }

        public void Stop()
        {
            lock (_lock)
            {
                if (!_isMoving) return;
                _jogVelocity = 0;
                _actualVel = 0;
                SetState(AxisState.StandStill);
                _isMoving = false;
                OnMotionCompleted(new AxisMotionEventArgs(AxisNo, _targetPos, _actualPos));
            }
        }

        public void Home(HomeMode mode = HomeMode.Default)
        {
            if (_owner != null && !_owner.AllowMotion(out var reason))
            {
                OnError(reason);
                return;
            }
            lock (_lock)
            {
                if (!_isEnabled) { OnError("轴未使能，无法回零"); return; }
                _isMoving = false;
                _jogVelocity = 0;
                _actualVel = 0;
                _actualPos = 0;
                _commandPos = 0;
                _targetPos = 0;
                _isHomed = true;
                SetState(AxisState.StandStill);
                OnMotionCompleted(new AxisMotionEventArgs(AxisNo, 0, 0));
            }
        }

        public void SetPosition(double position)
        {
            lock (_lock)
            {
                _actualPos = position;
                _commandPos = position;
            }
        }

        public void SetMotionParams(MotionParams parameters)
        {
            lock (_lock)
            {
                if (parameters == null) return;
                _velocity = parameters.Velocity;
                _accel = parameters.Acceleration;
                _decel = parameters.Deceleration;
                _jerk = parameters.Jerk;
            }
        }

        private void SetState(AxisState newState)
        {
            if (_state == newState) return;
            var old = _state;
            _state = newState;
            OnStateChanged(new AxisStateChangedEventArgs(AxisNo, old, newState));
        }

        protected virtual void OnMotionStarted(AxisMotionEventArgs e) => MotionStarted?.Invoke(this, e);
        protected virtual void OnMotionCompleted(AxisMotionEventArgs e) => MotionCompleted?.Invoke(this, e);
        protected virtual void OnStateChanged(AxisStateChangedEventArgs e) => StateChanged?.Invoke(this, e);
        protected virtual void OnError(string message) => ErrorOccurred?.Invoke(this, new AxisErrorEventArgs(AxisNo, message));
    }

    public class SimulatedIOCard : IIOCard
    {
        private readonly MotionDeviceConfig _cfg;
        private readonly bool[] _inputs;
        private readonly bool[] _outputs;

        public string Name => _cfg.Name;
        public int InputCount => _inputs.Length;
        public int OutputCount => _outputs.Length;
        public bool IsConnected { get; private set; }

        public SimulatedIOCard(MotionDeviceConfig cfg)
        {
            _cfg = cfg ?? new MotionDeviceConfig();
            _inputs = new bool[Math.Max(1, _cfg.InputCount)];
            _outputs = new bool[Math.Max(1, _cfg.OutputCount)];
        }

        public bool Open() { IsConnected = true; return true; }
        public void Close() { IsConnected = false; }

        public bool[] ReadAllInputs()
        {
            lock (_inputs) { return (bool[])_inputs.Clone(); }
        }

        public bool[] ReadAllOutputs()
        {
            lock (_outputs) { return (bool[])_outputs.Clone(); }
        }

        public bool WriteOutput(int index, bool value)
        {
            if (index < 0 || index >= _outputs.Length) return false;
            lock (_outputs) { _outputs[index] = value; }
            return true;
        }

        public bool WriteOutputs(bool[] values)
        {
            if (values == null) return false;
            lock (_outputs)
            {
                int n = Math.Min(values.Length, _outputs.Length);
                for (int i = 0; i < n; i++) _outputs[i] = values[i];
            }
            return true;
        }
    }
}