using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using OxyPlot;
using OxyPlot.Axes;
using OxyPlot.Series;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Threading;
using TabletTester2025.Helpers;
using TabletTester2025.Models;
using TabletTester2025.Services;

namespace TabletTester2025.ViewModels
{
    public partial class StationViewModel : ObservableObject
    {
        private readonly IPlcService _plc;
        private readonly PlcConfiguration _plcConfig;
        private readonly DatabaseService _db;
        private readonly ExcelExportService _excel;
        private readonly AlarmService _alarm;
        private DispatcherTimer _disintegrationTimer;
        private bool _isLoadingDissolution1Time;
        private bool _isLoadingDissolution2Time;
        private bool _isLoadingDissolution1SampleInterval;
        private bool _isLoadingDissolution2SampleInterval;
        private bool _isLoadingDisintegrationTime;
        private bool _isLoadingDisintegrationSpeed;
        private bool _isUpdatingFriabilityWeightFromPlc;

        private readonly List<double> _dissolution1Times = new();
        private readonly List<double> _dissolution1Values = new();
        private readonly List<double> _dissolution2Times = new();
        private readonly List<double> _dissolution2Values = new();
        public ObservableCollection<DissolutionSamplePoint> DissolutionSamplePoints { get; } = new();
        private DateTime _dissolution1StartTime = DateTime.MinValue;
        private DateTime _dissolution2StartTime = DateTime.MinValue;
        private bool _isDissolution1Running;
        private bool _isDissolution2Running;
        private bool _dissolution1SampleRequestActive;
        private bool _dissolution2SampleRequestActive;
        private bool _isDissolution1SamplePromptOpen;
        private bool _isDissolution2SamplePromptOpen;
        private bool _discardDisintegrationResult;
        private string _dissolutionResultChannel = "";
        private double _dissolutionResultRate30Min;
        private double _dissolutionResultRSquared;

        public int StationId { get; }

        [ObservableProperty] private TestType _currentTest;
        [ObservableProperty] private TestPhase _phase = TestPhase.Idle;

        // 硬度
        [ObservableProperty] private double _hardnessValue;
        [ObservableProperty] private bool _hardnessPass;
        [ObservableProperty] private double _hardnessAvg;
        [ObservableProperty] private double _hardnessRSD;
        [ObservableProperty] private double _hardnessInternalMin = 40;
        [ObservableProperty] private double _hardnessInternalMax = 60;


        //硬度新增
        //[ObservableProperty] private int _hardnessForward = 0;//硬前进
        //[ObservableProperty] private int _hardnessBack = 1;//硬后退
        //[ObservableProperty] private int _hardnessOver = 72; //硬度完成
        //[ObservableProperty] private int _hardnessStartOver = 92;// 硬复位完成
        //[ObservableProperty] private int _hardnessLimit = 298;// 硬度电机极限输入
        [ObservableProperty] private double _hardnessSudu = 300;// 硬度速度输入mm/min
        [ObservableProperty] private double _hardnessWeiyi = 100;  // 硬度位移输入mm
        //[ObservableProperty] private double _hardnessPoSun = 400;  // 硬度破损判定输入N
        //[ObservableProperty] private int _hardnessMaxN = 72;  //最大力采集



        private List<double> _hardnessResults = new();

        // 脆碎度
        [ObservableProperty] private double _weightBefore;
        [ObservableProperty] private double _weightAfter;
        [ObservableProperty] private double _lossPercent;
        [ObservableProperty] private bool _friabilityPass;

        // 崩解
        [ObservableProperty] private double _disintegrationTemp;
        [ObservableProperty] private int _disintegrationSeconds;
        [ObservableProperty] private bool _isBasketMovingUp;
        [ObservableProperty] private bool[] _tubesCompleted = new bool[6];
        [ObservableProperty] private int _remainingTubes;

        // 溶出
        [ObservableProperty] private double _dissolutionRpm;
        [ObservableProperty] private double _dissolutionPercent;
        [ObservableProperty] private double _dissolution1Percent;
        [ObservableProperty] private double _dissolution2Percent;

        // 硬度相关新增
        [ObservableProperty] private int _hardnessTestCount = 6;
        [ObservableProperty] private int _hardnessIntervalSec = 2;
        [ObservableProperty] private int _hardnessCurrentCount;
        [ObservableProperty] private double _hardnessMax;
        [ObservableProperty] private double _hardnessMin;


        [ObservableProperty] private bool _disintegrationPass;   // 新增
        [ObservableProperty] private bool _dissolutionPass;      // 新增

        public IAsyncRelayCommand HardnessUpCommand { get; }
        public IAsyncRelayCommand HardnessDownCommand { get; }
        public IAsyncRelayCommand HardnessResetCommand { get; }
        public IAsyncRelayCommand HardnessForward { get; }//前进
        public IAsyncRelayCommand HardnessBack { get; }//后退

        // 脆碎度新增
        [ObservableProperty] private double _friabilityTargetRpm = 25;
        [ObservableProperty] private int _friabilityTargetTimeSec = 4;
        [ObservableProperty] private int _friabilityTargetRounds = 100;
        [ObservableProperty] private double _friabilityMaxLossPercent = 1.0;
        [ObservableProperty] private bool _friabilityClockwise = true;
        [ObservableProperty] private bool _friabilityCounterClockwise;
        [ObservableProperty] private double _friabilityCurrentRpm;
        [ObservableProperty] private int _friabilityRemainingRounds = 100;
        public IAsyncRelayCommand StopHardnessCommand { get; }
        public IAsyncRelayCommand StopFriabilityCommand { get; }
        public IAsyncRelayCommand ResetFriabilityCommand { get; }
        public IAsyncRelayCommand PrintFriabilityCommand { get; }

        // 溶出度新增
        [ObservableProperty] private double _dissolutionUpDownFreq = 32;
        [ObservableProperty] private int _dissolutionSampleInterval = 5;
        [ObservableProperty] private double _dissolutionTargetRpm = 50;
        [ObservableProperty] private int _dissolution1TimeMin = 30;
        [ObservableProperty] private int _dissolution2TimeMin = 30;
        [ObservableProperty] private double _dissolution1SampleIntervalMin = 5;
        [ObservableProperty] private double _dissolution2SampleIntervalMin = 5;
        [ObservableProperty] private double _dissolutionElapsedTime;
        [ObservableProperty] private double _dissolutionCountdown;
        [ObservableProperty] private double _dissolutionRSquared;
        [ObservableProperty] private double _dissolution1RSquared;
        [ObservableProperty] private double _dissolution2RSquared;
        [ObservableProperty] private string _dissolutionCurveStatus = "";

        public IAsyncRelayCommand DissolutionUpCommand { get; }
        public IAsyncRelayCommand DissolutionDownCommand { get; }
        public IAsyncRelayCommand StopDissolutionCommand { get; }
        public IAsyncRelayCommand PrintDissolutionCommand { get; }
        public IAsyncRelayCommand StartDissolution1Command { get; }
        public IAsyncRelayCommand StopDissolution1Command { get; }
        public IAsyncRelayCommand ResetDissolution1Command { get; }
        public IAsyncRelayCommand StartDissolution2Command { get; }
        public IAsyncRelayCommand StopDissolution2Command { get; }
        public IAsyncRelayCommand ResetDissolution2Command { get; }

        // 崩解新增
        [ObservableProperty] private double _disintegrationTargetFreq = 31;
        [ObservableProperty] private double _disintegrationSpeedRpm = 31;
        [ObservableProperty] private double _disintegrationTimeMin = 15;
        [ObservableProperty] private string _disintegrationDosageForm = "普通片";
        public IAsyncRelayCommand StopDisintegrationCommand { get; }
        public IAsyncRelayCommand ResetDisintegrationCommand { get; }
        public IAsyncRelayCommand PrintDisintegrationCommand { get; }

        public PlotModel DissolutionPlotModel { get; }
        private readonly LineSeries _dissolution1Series;
        private readonly LineSeries _dissolution2Series;

        // 命令
        public IAsyncRelayCommand StartHardnessCommand { get; }
        public IAsyncRelayCommand StartFriabilityCommand { get; }
        public IAsyncRelayCommand StartDisintegrationCommand { get; }
        public IAsyncRelayCommand StartDissolutionCommand { get; }
        public IAsyncRelayCommand ExportHistoryCommand { get; }

        [ObservableProperty] private string _localAlarm;

        public StationViewModel(int id, IPlcService plc, PlcConfiguration plcConfig, DatabaseService db, ExcelExportService excel, AlarmService alarm)
        {
            StationId = id;
            _plc = plc;
            _plcConfig = plcConfig;
            _db = db;
            _excel = excel;
            _alarm = alarm;
            LoadPharmaDefaults();

            StartHardnessCommand = new AsyncRelayCommand(RunHardnessAsync);
            StartFriabilityCommand = new AsyncRelayCommand(RunFriabilityAsync);
            StartDisintegrationCommand = new AsyncRelayCommand(RunDisintegrationAsync);

            StartDissolutionCommand = new AsyncRelayCommand(StartDissolution1Async);

            ExportHistoryCommand = new AsyncRelayCommand(ExportHistoryAsync);

            // 溶出曲线
            DissolutionPlotModel = new PlotModel { Title = "溶出曲线" };
            DissolutionPlotModel.Axes.Add(new LinearAxis
            {
                Position = AxisPosition.Bottom,
                Title = "时间 (min)",
                Minimum = 0,
                MajorGridlineStyle = LineStyle.Solid,
                MinorGridlineStyle = LineStyle.Dot
            });
            DissolutionPlotModel.Axes.Add(new LinearAxis
            {
                Position = AxisPosition.Left,
                Title = "溶出度 (%)",
                Minimum = 0,
                Maximum = 150,
                MajorGridlineStyle = LineStyle.Solid,
                MinorGridlineStyle = LineStyle.Dot
            });
            _dissolution1Series = new LineSeries { Title = "溶出1", Color = OxyColors.SeaGreen, StrokeThickness = 2 };
            _dissolution2Series = new LineSeries { Title = "溶出2", Color = OxyColors.DodgerBlue, StrokeThickness = 2 };
            DissolutionPlotModel.Series.Add(_dissolution1Series);
            DissolutionPlotModel.Series.Add(_dissolution2Series);

            // 硬度命令
            //HardnessUpCommand = new AsyncRelayCommand(async () =>
            //{

            //    await _plc.WriteCoilAsync(0x20, true);
            //    await Task.Delay(100);
            //    await _plc.WriteCoilAsync(0x20, false);
            //});

            HardnessDownCommand = new AsyncRelayCommand(async () =>
            {
                await _plc.WriteCoilAsync(0x21, true);
                await Task.Delay(100);
                await _plc.WriteCoilAsync(0x21, false);
            });

            //复位
            HardnessResetCommand = new AsyncRelayCommand(async () =>
            {
                // 1. 标准PLC按钮脉冲逻辑：置1 → 延时 → 置0（模拟按下再松开按钮）
                await _plc.WriteCoilAsync(_plcConfig.HardnessStartReset, true);
                await Task.Delay(100); // 脉冲宽度，可根据PLC程序调整20~100ms
                await _plc.WriteCoilAsync(_plcConfig.HardnessStartReset, false);
                _hardnessResults.Clear();
                HardnessValue = 0;
                HardnessAvg = 0;
                HardnessRSD = 0;
                HardnessCurrentCount = 0;
                HardnessMax = 0;
                HardnessMin = 0;
                Phase = TestPhase.Idle;
              
            });

            // 硬前进按钮命令
            HardnessForward = new AsyncRelayCommand(async () =>
            {
               
                await _plc.WriteCoilAsync(_plcConfig.HardnessForward, true);
                await Task.Delay(100); // 脉冲宽度，和复位按钮保持一致
                await _plc.WriteCoilAsync(_plcConfig.HardnessForward, false);
            });

            // 硬后退按钮命令
            HardnessBack = new AsyncRelayCommand(async () =>
            {
                await _plc.WriteCoilAsync(_plcConfig.HardnessBack, true);
                await Task.Delay(100); // 脉冲宽度，和复位按钮保持一致
                await _plc.WriteCoilAsync(_plcConfig.HardnessBack, false);
            });

            // 硬度命令停止
            StopHardnessCommand = new AsyncRelayCommand(async() => {

                await _plc.WriteCoilAsync(_plcConfig.HardnessStartStop, true);
                await Task.Delay(100); // 脉冲宽度，可根据PLC程序调整20~100ms
                await _plc.WriteCoilAsync(_plcConfig.HardnessStartStop, false);

                Phase = TestPhase.Idle; 
            });
            // 脆碎度命令
            StopFriabilityCommand = new AsyncRelayCommand(async () => {

                //测试停止

                if (_plcConfig.FriabilityStartCoilStop != 0)
                    await PulseCoilAsync(_plcConfig.FriabilityStartCoilStop);
                Phase = TestPhase.Idle;
            });
            ResetFriabilityCommand = new AsyncRelayCommand(() =>
            {
                FriabilityRemainingRounds = FriabilityTargetRounds;
                LossPercent = 0;  // 失重率清零
                SetFriabilityWeightFromPlc(0, 0);  // 清空界面结果，不向PLC写零
                return Task.CompletedTask;
            });
            PrintFriabilityCommand = new AsyncRelayCommand(async () => await PrintReport("脆碎度"));

            // 溶出度命令
            DissolutionUpCommand = new AsyncRelayCommand(async () => await _plc.WriteCoilAsync(0x22, true));
            DissolutionDownCommand = new AsyncRelayCommand(async () => await _plc.WriteCoilAsync(0x23, true));
            StartDissolution1Command = new AsyncRelayCommand(StartDissolution1Async);
            StopDissolution1Command = new AsyncRelayCommand(StopDissolution1Async);
            ResetDissolution1Command = new AsyncRelayCommand(ResetDissolution1Async);
            StartDissolution2Command = new AsyncRelayCommand(StartDissolution2Async);
            StopDissolution2Command = new AsyncRelayCommand(StopDissolution2Async);
            ResetDissolution2Command = new AsyncRelayCommand(ResetDissolution2Async);
            StopDissolutionCommand = new AsyncRelayCommand(StopDissolution1Async);
            PrintDissolutionCommand = new AsyncRelayCommand(async () => await PrintReport("溶出度"));

            // 崩解命令
            StopDisintegrationCommand = new AsyncRelayCommand(StopDisintegrationAsync);
            ResetDisintegrationCommand = new AsyncRelayCommand(ResetDisintegrationAsync);
            PrintDisintegrationCommand = new AsyncRelayCommand(async () => await PrintReport("崩解"));

            _ = LoadDisintegrationTimeAsync();
            _ = LoadDisintegrationSpeedAsync();
            _ = LoadDissolutionTimesAsync();
            _ = LoadFriabilityWeightsAsync();
        }

        private void LoadPharmaDefaults()
        {
            var p = App.CurrentPharmaParams;
            HardnessInternalMin = p.HardnessMin_N;
            HardnessInternalMax = p.HardnessMax_N;
            HardnessTestCount = Math.Max(1, p.HardnessTestCount);
            FriabilityTargetRpm = p.FriabilityTargetRpm > 0 ? p.FriabilityTargetRpm : 25;
            FriabilityTargetRounds = p.FriabilityTargetRounds > 0 ? p.FriabilityTargetRounds : 100;
            FriabilityMaxLossPercent = p.FriabilityMaxLossPercent;
            FriabilityRemainingRounds = FriabilityTargetRounds;
            DisintegrationDosageForm = string.IsNullOrWhiteSpace(p.DisintegrationDosageForm) ? "普通片" : p.DisintegrationDosageForm;
            int seconds = ResolveDisintegrationLimitSeconds();
            if (seconds > 0)
                DisintegrationTimeMin = seconds / 60.0;
        }

        private async Task PrintReport(string testName)
        {
            await App.Current.Dispatcher.InvokeAsync(() =>
            {
                MessageBox.Show($"打印{testName}报告", "打印", MessageBoxButton.OK, MessageBoxImage.Information);
            });
        }

        public async Task UpdateRealTimeData()
        {
            if (Phase != TestPhase.Running) return;
            try
            {
                switch (CurrentTest)
                {
                
                    case TestType.Disintegration:
                        DisintegrationTemp = await _plc.ReadFloatAsync(_plcConfig.DisintegrationTemp);
                        IsBasketMovingUp = await _plc.ReadCoilAsync(_plcConfig.DisintegrationMovingUpCoil);
                        for (int i = 0; i < _plcConfig.DisintegrationCompleteCoils.Length; i++)
                        {
                            bool completed = await _plc.ReadCoilAsync(_plcConfig.DisintegrationCompleteCoils[i]);
                            if (completed && !TubesCompleted[i])
                            {
                                TubesCompleted[i] = true;
                                RemainingTubes = 6 - TubesCompleted.Count(c => c);
                            }
                        }
                        break;
                    case TestType.Dissolution:
                        await UpdateDissolutionDataAsync();
                        break;
                }
            }
            catch { }
        }

        private async Task UpdateDissolutionDataAsync()
        {
            DissolutionRpm = await _plc.ReadFloatAsync(_plcConfig.DissolutionRpm);
            if (_plcConfig.DisintegrationTemp != 0)
                DisintegrationTemp = await _plc.ReadFloatAsync(_plcConfig.DisintegrationTemp);

            if (_isDissolution1Running)
                await CheckDissolutionSampleAsync(1);

            if (_isDissolution2Running)
                await CheckDissolutionSampleAsync(2);

            UpdateDissolutionClock();
        }

        private async Task CheckDissolutionSampleAsync(int channel)
        {
            ushort coilAddress = channel == 1
                ? _plcConfig.Dissolution1SampleAckCoil
                : _plcConfig.Dissolution2SampleAckCoil;

            if (coilAddress == 0)
            {
                DissolutionCurveStatus = $"溶出{channel}取样确认线圈未配置";
                return;
            }

            bool sampleConfirmed = await _plc.ReadCoilAsync(coilAddress);
            if (sampleConfirmed)
            {
                SetDissolutionSampleRequestActive(channel, false);
                return;
            }

            if (IsDissolutionSampleRequestActive(channel) || IsDissolutionSamplePromptOpen(channel))
                return;

            if (GetNextPendingDissolutionSample(channel) == null)
            {
                await _plc.WriteCoilAsync(coilAddress, true);
                DissolutionCurveStatus = $"溶出{channel}已完成全部取样点";
                return;
            }

            SetDissolutionSampleRequestActive(channel, true);
            SetDissolutionSamplePromptOpen(channel, true);

            try
            {
                double percent = await ShowDissolutionSampleDialogAsync(channel);
                RecordDissolutionSample(channel, percent);
                await _plc.WriteCoilAsync(coilAddress, true);
                LocalAlarm = $"溶出{channel}已记录取样结果";
                DissolutionCurveStatus = "";
            }
            catch (Exception ex)
            {
                SetDissolutionSampleRequestActive(channel, false);
                await App.Current.Dispatcher.InvokeAsync(() =>
                    MessageBox.Show($"溶出{channel}取样确认失败：{ex.Message}", "取样确认失败", MessageBoxButton.OK, MessageBoxImage.Error));
            }
            finally
            {
                SetDissolutionSamplePromptOpen(channel, false);
            }
        }

        private bool IsDissolutionSampleRequestActive(int channel)
        {
            return channel == 1 ? _dissolution1SampleRequestActive : _dissolution2SampleRequestActive;
        }

        private void SetDissolutionSampleRequestActive(int channel, bool value)
        {
            if (channel == 1)
                _dissolution1SampleRequestActive = value;
            else
                _dissolution2SampleRequestActive = value;
        }

        private bool IsDissolutionSamplePromptOpen(int channel)
        {
            return channel == 1 ? _isDissolution1SamplePromptOpen : _isDissolution2SamplePromptOpen;
        }

        private void SetDissolutionSamplePromptOpen(int channel, bool value)
        {
            if (channel == 1)
                _isDissolution1SamplePromptOpen = value;
            else
                _isDissolution2SamplePromptOpen = value;
        }

        private async Task<double> ShowDissolutionSampleDialogAsync(int channel)
        {
            double? result = await App.Current.Dispatcher.InvokeAsync<double?>(() =>
            {
                var nextSample = GetNextPendingDissolutionSample(channel);
                double elapsed = GetDissolutionElapsedMinutes(channel);
                string plannedText = nextSample == null
                    ? "未找到待记录取样点"
                    : $"计划取样时间：{nextSample.ScheduledTimeMin:0.##} min";

                var dialog = new Window
                {
                    Title = $"溶出{channel}取样",
                    Width = 460,
                    SizeToContent = SizeToContent.Height,
                    WindowStartupLocation = WindowStartupLocation.CenterOwner,
                    ResizeMode = ResizeMode.NoResize,
                    Background = Brushes.White,
                    Owner = Application.Current.MainWindow
                };

                var panel = new StackPanel { Margin = new Thickness(24) };
                panel.Children.Add(new TextBlock
                {
                    Text = $"请人工采集样品并完成分析，录入该时间点的溶出度(%)。\n{plannedText}\n当前运行时间：{elapsed:0.##} min",
                    FontSize = 16,
                    Foreground = new SolidColorBrush(Color.FromRgb(16, 42, 67)),
                    TextWrapping = TextWrapping.Wrap,
                    Margin = new Thickness(0, 0, 0, 14)
                });

                panel.Children.Add(new TextBlock
                {
                    Text = "溶出度(%)",
                    FontSize = 14,
                    FontWeight = System.Windows.FontWeights.SemiBold,
                    Foreground = new SolidColorBrush(Color.FromRgb(51, 65, 85)),
                    Margin = new Thickness(0, 0, 0, 6)
                });

                var input = new TextBox
                {
                    Height = 42,
                    FontSize = 18,
                    Padding = new Thickness(10, 5, 10, 5),
                    Text = nextSample?.Percent?.ToString("0.###") ?? "",
                    Margin = new Thickness(0, 0, 0, 18)
                };
                NumericInput.SetIsEnabled(input, true);
                NumericInput.SetAllowDecimal(input, true);
                NumericInput.SetAllowNegative(input, false);
                panel.Children.Add(input);

                var buttons = new StackPanel
                {
                    Orientation = Orientation.Horizontal,
                    HorizontalAlignment = System.Windows.HorizontalAlignment.Right
                };

                var cancelButton = new Button
                {
                    Content = "取消",
                    Width = 96,
                    Height = 38,
                    Margin = new Thickness(0, 0, 10, 0),
                    Background = Brushes.White,
                    Foreground = new SolidColorBrush(Color.FromRgb(51, 65, 85)),
                    BorderBrush = new SolidColorBrush(Color.FromRgb(203, 213, 225)),
                    BorderThickness = new Thickness(1),
                    FontSize = 15,
                    FontWeight = System.Windows.FontWeights.SemiBold,
                    Cursor = System.Windows.Input.Cursors.Hand
                };
                cancelButton.Click += (_, _) =>
                {
                    dialog.DialogResult = false;
                    dialog.Close();
                };

                var confirmButton = new Button
                {
                    Content = "记录取样",
                    Width = 112,
                    Height = 38,
                    Background = new SolidColorBrush(Color.FromRgb(21, 101, 169)),
                    Foreground = Brushes.White,
                    BorderThickness = new Thickness(0),
                    FontSize = 15,
                    FontWeight = System.Windows.FontWeights.SemiBold,
                    Cursor = System.Windows.Input.Cursors.Hand
                };
                confirmButton.Click += (_, _) =>
                {
                    if (!double.TryParse(input.Text, out double value) || !IsValidDissolutionPercent(value))
                    {
                        MessageBox.Show("请输入0-150之间的溶出度百分比。", "取样结果无效", MessageBoxButton.OK, MessageBoxImage.Warning);
                        return;
                    }

                    input.Tag = value;
                    dialog.DialogResult = true;
                    dialog.Close();
                };

                buttons.Children.Add(cancelButton);
                buttons.Children.Add(confirmButton);
                panel.Children.Add(buttons);
                dialog.Content = panel;
                return dialog.ShowDialog() == true && input.Tag is double value ? value : null;
            });

            if (!result.HasValue)
                throw new InvalidOperationException("取样结果未录入，未写入确认线圈");

            return result.Value;
        }

        private async Task<bool> ReadDissolutionChannelAsync(int channel)
        {
            ushort registerAddress = channel == 1
                ? ResolveDissolution1PercentAddress()
                : _plcConfig.Dissolution2Percent;

            if (registerAddress == 0)
            {
                DissolutionCurveStatus = $"溶出{channel}溶出度寄存器未配置";
                return false;
            }

            double value = await _plc.ReadFloatAsync(registerAddress);
            if (!IsValidDissolutionPercent(value))
            {
                DissolutionCurveStatus = $"溶出{channel}溶出度数据异常";
                return false;
            }

            DateTime startTime = channel == 1 ? _dissolution1StartTime : _dissolution2StartTime;
            if (startTime == DateTime.MinValue)
                return false;

            double minutes = (DateTime.Now - startTime).TotalMinutes;
            if (channel == 1)
            {
                Dissolution1Percent = value;
                DissolutionPercent = value;
                AddDissolutionPoint(_dissolution1Times, _dissolution1Values, _dissolution1Series, minutes, value);
                Dissolution1RSquared = CalculateRSquared(_dissolution1Times, _dissolution1Values);
                DissolutionRSquared = Dissolution1RSquared;
            }
            else
            {
                Dissolution2Percent = value;
                DissolutionPercent = value;
                AddDissolutionPoint(_dissolution2Times, _dissolution2Values, _dissolution2Series, minutes, value);
                Dissolution2RSquared = CalculateRSquared(_dissolution2Times, _dissolution2Values);
                DissolutionRSquared = Dissolution2RSquared;
            }

            DissolutionCurveStatus = "";
            return true;
        }

        private ushort ResolveDissolution1PercentAddress()
        {
            return _plcConfig.Dissolution1Percent != 0
                ? _plcConfig.Dissolution1Percent
                : _plcConfig.DissolutionPercent;
        }

        private static bool IsValidDissolutionPercent(double value)
        {
            return double.IsFinite(value) && value >= 0 && value <= 150;
        }

        private static void AddDissolutionPoint(List<double> times, List<double> values, LineSeries series, double minutes, double value)
        {
            if (times.Count > 0 && minutes <= times[^1])
                return;

            times.Add(minutes);
            values.Add(value);
            series.Points.Add(new DataPoint(minutes, value));
        }

        private void CreateDissolutionSampleSchedule(int channel)
        {
            RemoveDissolutionSamples(channel);

            var sampleTimes = App.CurrentPharmaParams.DissolutionSampleTimes?
                .Where(t => t > 0)
                .Distinct()
                .OrderBy(t => t)
                .ToArray();

            if (sampleTimes == null || sampleTimes.Length == 0)
                sampleTimes = new[] { 5, 10, 15, 30, 45, 60 };

            foreach (int minute in sampleTimes)
            {
                DissolutionSamplePoints.Add(new DissolutionSamplePoint
                {
                    Channel = channel,
                    ScheduledTimeMin = minute
                });
            }
        }

        private void RemoveDissolutionSamples(int channel)
        {
            for (int i = DissolutionSamplePoints.Count - 1; i >= 0; i--)
            {
                if (DissolutionSamplePoints[i].Channel == channel)
                    DissolutionSamplePoints.RemoveAt(i);
            }
        }

        private DissolutionSamplePoint? GetNextPendingDissolutionSample(int channel)
        {
            return DissolutionSamplePoints
                .Where(s => s.Channel == channel && !s.Percent.HasValue)
                .OrderBy(s => s.ScheduledTimeMin)
                .FirstOrDefault();
        }

        private double GetDissolutionElapsedMinutes(int channel)
        {
            DateTime startTime = channel == 1 ? _dissolution1StartTime : _dissolution2StartTime;
            return startTime == DateTime.MinValue ? 0 : Math.Max(0, (DateTime.Now - startTime).TotalMinutes);
        }

        private void RecordDissolutionSample(int channel, double percent)
        {
            var sample = GetNextPendingDissolutionSample(channel)
                ?? new DissolutionSamplePoint
                {
                    Channel = channel,
                    ScheduledTimeMin = GetDissolutionElapsedMinutes(channel)
                };

            if (!DissolutionSamplePoints.Contains(sample))
                DissolutionSamplePoints.Add(sample);

            sample.ActualTimeMin = GetDissolutionElapsedMinutes(channel);
            sample.Percent = percent;
            sample.RecordedAt = DateTime.Now;

            RefreshDissolutionSeries(channel);
        }

        private void RefreshDissolutionSeries(int channel)
        {
            var times = channel == 1 ? _dissolution1Times : _dissolution2Times;
            var values = channel == 1 ? _dissolution1Values : _dissolution2Values;
            var series = channel == 1 ? _dissolution1Series : _dissolution2Series;
            var recordedSamples = DissolutionSamplePoints
                .Where(s => s.Channel == channel && s.Percent.HasValue)
                .OrderBy(s => s.ScheduledTimeMin)
                .ToList();

            times.Clear();
            values.Clear();
            series.Points.Clear();

            foreach (var sample in recordedSamples)
            {
                double time = sample.ScheduledTimeMin;
                double value = sample.Percent!.Value;
                times.Add(time);
                values.Add(value);
                series.Points.Add(new DataPoint(time, value));
            }

            double rsquared = CalculateRSquared(times, values);
            double latestValue = recordedSamples.LastOrDefault()?.Percent ?? 0;
            if (channel == 1)
            {
                Dissolution1Percent = latestValue;
                Dissolution1RSquared = rsquared;
            }
            else
            {
                Dissolution2Percent = latestValue;
                Dissolution2RSquared = rsquared;
            }

            DissolutionPercent = latestValue;
            DissolutionRSquared = rsquared;
            DissolutionPlotModel.InvalidatePlot(true);
        }

        private void UpdateDissolutionClock()
        {
            var now = DateTime.Now;
            double elapsed1 = _isDissolution1Running && _dissolution1StartTime != DateTime.MinValue
                ? (now - _dissolution1StartTime).TotalMinutes
                : 0;
            double elapsed2 = _isDissolution2Running && _dissolution2StartTime != DateTime.MinValue
                ? (now - _dissolution2StartTime).TotalMinutes
                : 0;

            DissolutionElapsedTime = Math.Max(elapsed1, elapsed2);

            var remaining = new List<double>();
            if (_isDissolution1Running)
                remaining.Add(Math.Max(0, Dissolution1TimeMin - elapsed1));
            if (_isDissolution2Running)
                remaining.Add(Math.Max(0, Dissolution2TimeMin - elapsed2));

            DissolutionCountdown = remaining.Count == 0 ? 0 : remaining.Min();
        }

        partial void OnDissolution1TimeMinChanged(int value)
        {
            if (_isLoadingDissolution1Time || _plcConfig.Dissolution1Time == 0 || value <= 0)
                return;

            _ = WriteDissolutionTimeAsync(_plcConfig.Dissolution1Time, value);
        }

        partial void OnDissolution2TimeMinChanged(int value)
        {
            if (_isLoadingDissolution2Time || _plcConfig.Dissolution2Time == 0 || value <= 0)
                return;

            _ = WriteDissolutionTimeAsync(_plcConfig.Dissolution2Time, value);
        }

        partial void OnDissolution1SampleIntervalMinChanged(double value)
        {
            if (_isLoadingDissolution1SampleInterval || _plcConfig.Dissolution1SampleInterval == 0 || value <= 0)
                return;

            _ = WriteDissolutionFloatAsync(_plcConfig.Dissolution1SampleInterval, value);
            DissolutionSampleInterval = ToCompatibleSampleInterval(value);
        }

        partial void OnDissolution2SampleIntervalMinChanged(double value)
        {
            if (_isLoadingDissolution2SampleInterval || _plcConfig.Dissolution2SampleInterval == 0 || value <= 0)
                return;

            _ = WriteDissolutionFloatAsync(_plcConfig.Dissolution2SampleInterval, value);
        }

        private async Task LoadDissolutionTimesAsync()
        {
            if (_plcConfig.Dissolution1Time != 0)
            {
                try
                {
                    _isLoadingDissolution1Time = true;
                    int value = await _plc.ReadIntAsync(_plcConfig.Dissolution1Time);
                    if (value > 0)
                        Dissolution1TimeMin = value;
                }
                catch { }
                finally
                {
                    _isLoadingDissolution1Time = false;
                }
            }

            if (_plcConfig.Dissolution2Time != 0)
            {
                try
                {
                    _isLoadingDissolution2Time = true;
                    int value = await _plc.ReadIntAsync(_plcConfig.Dissolution2Time);
                    if (value > 0)
                        Dissolution2TimeMin = value;
                }
                catch { }
                finally
                {
                    _isLoadingDissolution2Time = false;
                }
            }

            await LoadDissolutionSampleIntervalsAsync();
        }

        private async Task WriteDissolutionTimeAsync(ushort registerAddress, int value)
        {
            if (registerAddress == 0 || value <= 0)
                return;

            try
            {
                await _plc.WriteRegisterAsync(registerAddress, (ushort)Math.Min(value, ushort.MaxValue));
            }
            catch { }
        }

        private async Task LoadDissolutionSampleIntervalsAsync()
        {
            if (_plcConfig.Dissolution1SampleInterval != 0)
            {
                try
                {
                    _isLoadingDissolution1SampleInterval = true;
                    float value = await _plc.ReadFloatAsync(_plcConfig.Dissolution1SampleInterval);
                    if (float.IsFinite(value) && value > 0)
                    {
                        Dissolution1SampleIntervalMin = value;
                        DissolutionSampleInterval = ToCompatibleSampleInterval(value);
                    }
                }
                catch { }
                finally
                {
                    _isLoadingDissolution1SampleInterval = false;
                }
            }

            if (_plcConfig.Dissolution2SampleInterval != 0)
            {
                try
                {
                    _isLoadingDissolution2SampleInterval = true;
                    float value = await _plc.ReadFloatAsync(_plcConfig.Dissolution2SampleInterval);
                    if (float.IsFinite(value) && value > 0)
                        Dissolution2SampleIntervalMin = value;
                }
                catch { }
                finally
                {
                    _isLoadingDissolution2SampleInterval = false;
                }
            }
        }

        private async Task WriteDissolutionFloatAsync(ushort registerAddress, double value)
        {
            if (registerAddress == 0 || value <= 0 || !double.IsFinite(value))
                return;

            try
            {
                await _plc.WriteFloatAsync(registerAddress, (float)value);
            }
            catch { }
        }

        private static int ToCompatibleSampleInterval(double value)
        {
            if (!double.IsFinite(value) || value <= 0)
                return 0;

            return (int)Math.Min(int.MaxValue, Math.Round(value, MidpointRounding.AwayFromZero));
        }

        partial void OnWeightBeforeChanged(double value)
        {
            if (_isUpdatingFriabilityWeightFromPlc)
                return;

            _ = WriteFriabilityWeightAsync(_plcConfig.WeightBefore, value);
        }

        partial void OnWeightAfterChanged(double value)
        {
            if (_isUpdatingFriabilityWeightFromPlc)
                return;

            _ = WriteFriabilityWeightAsync(_plcConfig.WeightAfter, value);
        }

        private async Task LoadFriabilityWeightsAsync()
        {
            try
            {
                _isUpdatingFriabilityWeightFromPlc = true;

                if (_plcConfig.WeightBefore != 0)
                {
                    double before = await ReadFriabilityWeightAsync(_plcConfig.WeightBefore, "脆碎前重量");
                    WeightBefore = before;
                }

                if (_plcConfig.WeightAfter != 0)
                {
                    double after = await ReadFriabilityWeightAsync(_plcConfig.WeightAfter, "脆碎后重量");
                    WeightAfter = after;
                }
            }
            catch { }
            finally
            {
                _isUpdatingFriabilityWeightFromPlc = false;
            }
        }

        private async Task WriteFriabilityWeightAsync(ushort registerAddress, double value)
        {
            if (registerAddress == 0 || !double.IsFinite(value) || value < 0)
                return;

            try
            {
                await _plc.WriteFloatAsync(registerAddress, (float)value);
            }
            catch { }
        }

        private void SetFriabilityWeightFromPlc(double? weightBefore = null, double? weightAfter = null)
        {
            _isUpdatingFriabilityWeightFromPlc = true;
            try
            {
                if (weightBefore.HasValue)
                    WeightBefore = weightBefore.Value;
                if (weightAfter.HasValue)
                    WeightAfter = weightAfter.Value;
            }
            finally
            {
                _isUpdatingFriabilityWeightFromPlc = false;
            }
        }

        partial void OnDisintegrationTimeMinChanged(double value)
        {
            if (_isLoadingDisintegrationTime || _plcConfig.DisintegrationTime == 0 || value <= 0)
                return;

            _ = WriteDisintegrationTimeAsync(value);
        }

        partial void OnDisintegrationSpeedRpmChanged(double value)
        {
            if (_isLoadingDisintegrationSpeed || _plcConfig.DisintegrationSpeed == 0 || value <= 0)
                return;

            _ = WriteDisintegrationSpeedAsync(value);
        }

        partial void OnDisintegrationDosageFormChanged(string value)
        {
            int seconds = ResolveDisintegrationLimitSeconds(value);
            if (seconds > 0)
                DisintegrationTimeMin = seconds / 60.0;
        }

        private int ResolveDisintegrationLimitSeconds(string? dosageForm = null)
        {
            string form = string.IsNullOrWhiteSpace(dosageForm) ? DisintegrationDosageForm : dosageForm;
            return form switch
            {
                "薄膜衣片" => 30 * 60,
                "糖衣片" => 60 * 60,
                "胶囊" => 30 * 60,
                "普通片" => 15 * 60,
                _ => App.CurrentPharmaParams.DisintegrationMaxSeconds > 0
                    ? App.CurrentPharmaParams.DisintegrationMaxSeconds
                    : 15 * 60
            };
        }

        private async Task LoadDisintegrationSpeedAsync()
        {
            if (_plcConfig.DisintegrationSpeed == 0)
                return;

            try
            {
                _isLoadingDisintegrationSpeed = true;
                float value = await _plc.ReadFloatAsync(_plcConfig.DisintegrationSpeed);
                if (value > 0)
                    DisintegrationSpeedRpm = value;
            }
            catch { }
            finally
            {
                _isLoadingDisintegrationSpeed = false;
            }
        }

        private async Task LoadDisintegrationTimeAsync()
        {
            if (_plcConfig.DisintegrationTime == 0)
                return;

            try
            {
                _isLoadingDisintegrationTime = true;
                int seconds = ResolveDisintegrationLimitSeconds();
                if (seconds > 0)
                    DisintegrationTimeMin = seconds / 60.0;
                await WriteDisintegrationTimeAsync(DisintegrationTimeMin);
            }
            catch { }
            finally
            {
                _isLoadingDisintegrationTime = false;
            }
        }

        private async Task WriteDisintegrationTimeAsync(double value)
        {
            if (_plcConfig.DisintegrationTime == 0 || value <= 0)
                return;

            try
            {
                await _plc.WriteFloatAsync(_plcConfig.DisintegrationTime, (float)value);
            }
            catch { }
        }

        private async Task WriteDisintegrationSpeedAsync(double value)
        {
            if (_plcConfig.DisintegrationSpeed == 0 || value <= 0)
                return;

            try
            {
                await _plc.WriteFloatAsync(_plcConfig.DisintegrationSpeed, (float)value);
            }
            catch { }
        }

        private async Task PulseCoilAsync(ushort coilAddress)
        {
            if (coilAddress == 0)
                throw new InvalidOperationException("PLC线圈地址未配置");

            await _plc.WriteCoilAsync(coilAddress, true);
            await Task.Delay(100);
            await _plc.WriteCoilAsync(coilAddress, false);
        }

        private async Task RunHardnessAsync()
        {
            if (Phase != TestPhase.Idle) return;
            CurrentTest = TestType.Hardness;
            Phase = TestPhase.Running;
            HardnessPass = false;
            _hardnessResults.Clear();

            try
            {
                int count = Math.Max(1, HardnessTestCount);
                double min = HardnessInternalMin;
                double max = HardnessInternalMax;


                double currentSpeed = HardnessSudu;
                double currentWeiyi = HardnessWeiyi;
              

                // 如果你需要把这3个值发给PLC，就在这里发一次（测试开始用当前参数）
                await _plc.WriteFloatAsync(_plcConfig.HardnessSudu, (float)currentSpeed);
                await _plc.WriteFloatAsync(_plcConfig.HardnessWeiyi, (float)currentWeiyi);
            

                // 开始循环测试
                for (int i = 0; i < count; i++)
                {
                    await _plc.WriteCoilAsync(_plcConfig.HardnessStartCoil, true);

                    bool completed = false;
                    while (!completed && Phase == TestPhase.Running)
                    {
                        await Task.Delay(200);
                        completed = await _plc.ReadCoilAsync(_plcConfig.HardnessCompleteCoil);
                    }

                    double val = await _plc.ReadFloatAsync(_plcConfig.HardnessPoSun);
                    _hardnessResults.Add(val);
                    //HardnessPoSun = val;

                    await Task.Delay(1000);
                }

                // 计算结果
                HardnessAvg = _hardnessResults.Average();
                HardnessMax = _hardnessResults.Max();
                HardnessMin = _hardnessResults.Min();
                HardnessCurrentCount = count;
                HardnessRSD = (StandardDeviation(_hardnessResults) / HardnessAvg) * 100;
                HardnessPass = HardnessAvg >= min && HardnessAvg <= max;

                Phase = TestPhase.Completed;
            }
            catch (Exception ex)
            {
                await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"硬度测试出错：{ex.Message}"));
                Phase = TestPhase.Error;
            }
            finally
            {
                Phase = TestPhase.Idle;
                await SaveBatchResult();
            }
        }

        /// 脆碎度测试主逻辑（实时状态显示）

        private async Task RunFriabilityAsync()
        {
            // 1. 防并发：如果设备不是空闲状态，直接退出
            if (Phase != TestPhase.Idle)
                return;

            // 2. 标记当前正在运行的是脆碎度测试
            CurrentTest = TestType.Friability;
            Phase = TestPhase.Running;
            FriabilityPass = false;
            bool resultReady = false;

            try
            {
                ushort startCoil = _plcConfig.FriabilityStartCoil;

                if (startCoil == 0)
                {
                    throw new InvalidOperationException("未配置脆碎度启动线圈地址");
                }
                double weightBefore = await ReadFriabilityWeightAsync(_plcConfig.WeightBefore, "脆碎前重量");
                SetFriabilityWeightFromPlc(weightBefore: weightBefore);
                if (WeightBefore <= 0)
                    throw new InvalidOperationException("脆碎前重量必须大于0");

                int totalRounds = Math.Max(1, FriabilityTargetRounds);
                double rpm = FriabilityTargetRpm > 0 ? FriabilityTargetRpm : 25;
                FriabilityTargetTimeSec = (int)Math.Ceiling(totalRounds / rpm * 60);
                FriabilityRemainingRounds = totalRounds;
                FriabilityCurrentRpm = rpm;
                await _plc.WriteCoilAsync(startCoil, true);
                int durationMs = (int)((totalRounds / rpm) * 60 * 1000); // 总运行时间（毫秒）

                for (int i = 0; i < durationMs; i += 100)
                {
                    // 如果用户点了停止，状态会被设为Idle，直接跳出循环
                    if (Phase != TestPhase.Running)
                        break;

                    // 计算当前剩余圈数
                    double elapsedMs = i;
                    double elapsedRounds = rpm / 60 / 1000 * elapsedMs;
                    int remainingRounds = (int)Math.Ceiling(totalRounds - elapsedRounds);

                    // 更新界面绑定的剩余圈数
                    FriabilityRemainingRounds = remainingRounds;

                    // 等待100ms，再更新下一次
                    await Task.Delay(100);
                }
                if (Phase != TestPhase.Running)
                    throw new InvalidOperationException("脆碎度测试已停止，未保存结果");

                double weightAfter = await ReadFriabilityWeightAsync(_plcConfig.WeightAfter, "脆碎后重量");
                SetFriabilityWeightFromPlc(weightAfter: weightAfter);
                if (WeightAfter > WeightBefore)
                    throw new InvalidOperationException("脆碎后重量不能大于初始重量");

                FriabilityCurrentRpm = rpm;
                LossPercent = (WeightBefore - WeightAfter) / WeightBefore * 100;//失重率
                FriabilityPass = LossPercent <= FriabilityMaxLossPercent; //标准值
                resultReady = true;
                // 标记测试为已完成
                Phase = TestPhase.Completed;
            }
            catch (Exception ex)
            {
             
                await App.Current.Dispatcher.InvokeAsync(() =>
                    MessageBox.Show($"脆碎度测试出错: {ex.Message}"));
                Phase = TestPhase.Error;
            }
            finally
            {
                Phase = TestPhase.Idle;
                FriabilityRemainingRounds = FriabilityTargetRounds;
                if (resultReady)
                    await SaveBatchResult();
            }
        }

        private async Task<double> ReadFriabilityWeightAsync(ushort registerAddress, string label)
        {
            if (registerAddress == 0)
                throw new InvalidOperationException($"{label}寄存器未配置");

            double value = await _plc.ReadFloatAsync(registerAddress);
            if (!double.IsFinite(value) || value < 0)
                throw new InvalidOperationException($"{label}数据异常");

            return value;
        }

        private async Task RunDisintegrationAsync()
        {
            if (Phase != TestPhase.Idle) return;
            CurrentTest = TestType.Disintegration;
            Phase = TestPhase.Running;
            DisintegrationPass = false;   // 添加这一行
            TubesCompleted = new bool[6];
            RemainingTubes = 6;
            DisintegrationSeconds = 0;
            _disintegrationTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
            _disintegrationTimer.Tick += (s, e) =>
            {
                if (Phase == TestPhase.Running)
                    DisintegrationSeconds++;
            };
            _disintegrationTimer.Start();

            try
            {
                await WriteDisintegrationSpeedAsync(DisintegrationSpeedRpm);
                await WriteDisintegrationTimeAsync(DisintegrationTimeMin);
                await PulseCoilAsync(_plcConfig.DisintegrationStartCoil);
                int maxSec = ResolveDisintegrationLimitSeconds();
                DisintegrationTimeMin = maxSec / 60.0;
                while (RemainingTubes > 0 && DisintegrationSeconds < maxSec && Phase == TestPhase.Running)
                {
                    await Task.Delay(500);
                }
                _disintegrationTimer.Stop();
                Phase = TestPhase.Completed;
            }
            catch (Exception ex)
            {
                _disintegrationTimer.Stop();
                await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"崩解测试出错: {ex.Message}"));
                Phase = TestPhase.Error;
            }
            finally
            {
                Phase = TestPhase.Idle;
                int maxSec = ResolveDisintegrationLimitSeconds();
                DisintegrationPass = !_discardDisintegrationResult && RemainingTubes == 0 && DisintegrationSeconds <= maxSec;

                if (!_discardDisintegrationResult)
                    await SaveBatchResult();

                _discardDisintegrationResult = false;
            }
        }

        private async Task StopDisintegrationAsync()
        {
            try
            {
                await PulseCoilAsync(_plcConfig.DisintegrationStopCoil);
            }
            finally
            {
                Phase = TestPhase.Idle;
                _disintegrationTimer?.Stop();
            }
        }

        private async Task ResetDisintegrationAsync()
        {
            bool wasRunning = CurrentTest == TestType.Disintegration && Phase == TestPhase.Running;
            _discardDisintegrationResult = wasRunning;

            try
            {
                await PulseCoilAsync(_plcConfig.DisintegrationResetCoil);
            }
            finally
            {
                _disintegrationTimer?.Stop();
                TubesCompleted = new bool[6];
                RemainingTubes = 6;
                DisintegrationSeconds = 0;
                DisintegrationPass = false;
                Phase = TestPhase.Idle;

                if (!wasRunning)
                    _discardDisintegrationResult = false;
            }
        }

        private async Task StartDissolution1Async()
        {
            CurrentTest = TestType.Dissolution;
            Phase = TestPhase.Running;
            DissolutionPass = false;
            ResetDissolutionChannel(1);
            ResetDissolutionSampleState(1);
            CreateDissolutionSampleSchedule(1);
            _dissolution1StartTime = DateTime.Now;
            _isDissolution1Running = true;
            DissolutionPlotModel.Title = "溶出曲线";
            await WriteDissolutionTimeAsync(_plcConfig.Dissolution1Time, Dissolution1TimeMin);
            await WriteDissolutionFloatAsync(_plcConfig.Dissolution1SampleInterval, Dissolution1SampleIntervalMin);
            await PulseCoilAsync(_plcConfig.Dissolution1StartCoil);
        }

        private async Task StopDissolution1Async()
        {
            try
            {
                await PulseCoilAsync(_plcConfig.Dissolution1StopCoil);
                await FinalizeDissolutionChannelAsync(1);
            }
            finally
            {
                _isDissolution1Running = false;
                ResetDissolutionSampleState(1);
                Phase = _isDissolution2Running ? TestPhase.Running : TestPhase.Idle;
                UpdateDissolutionClock();
            }
        }

        private async Task ResetDissolution1Async()
        {
            try
            {
                await PulseCoilAsync(_plcConfig.Dissolution1ResetCoil);
            }
            finally
            {
                _isDissolution1Running = false;
                ResetDissolutionChannel(1);
                ResetDissolutionSampleState(1);
                Phase = _isDissolution2Running ? TestPhase.Running : TestPhase.Idle;
                UpdateDissolutionClock();
            }
        }

        private async Task StartDissolution2Async()
        {
            CurrentTest = TestType.Dissolution;
            Phase = TestPhase.Running;
            DissolutionPass = false;
            ResetDissolutionChannel(2);
            ResetDissolutionSampleState(2);
            CreateDissolutionSampleSchedule(2);
            _dissolution2StartTime = DateTime.Now;
            _isDissolution2Running = true;
            DissolutionPlotModel.Title = "溶出曲线";
            await WriteDissolutionTimeAsync(_plcConfig.Dissolution2Time, Dissolution2TimeMin);
            await WriteDissolutionFloatAsync(_plcConfig.Dissolution2SampleInterval, Dissolution2SampleIntervalMin);
            await PulseCoilAsync(_plcConfig.Dissolution2StartCoil);
        }

        private async Task StopDissolution2Async()
        {
            try
            {
                await PulseCoilAsync(_plcConfig.Dissolution2StopCoil);
                await FinalizeDissolutionChannelAsync(2);
            }
            finally
            {
                _isDissolution2Running = false;
                ResetDissolutionSampleState(2);
                Phase = _isDissolution1Running ? TestPhase.Running : TestPhase.Idle;
                UpdateDissolutionClock();
            }
        }

        private async Task ResetDissolution2Async()
        {
            try
            {
                await PulseCoilAsync(_plcConfig.Dissolution2ResetCoil);
            }
            finally
            {
                _isDissolution2Running = false;
                ResetDissolutionChannel(2);
                ResetDissolutionSampleState(2);
                Phase = _isDissolution1Running ? TestPhase.Running : TestPhase.Idle;
                UpdateDissolutionClock();
            }
        }

        private void ResetDissolutionChannel(int channel)
        {
            RemoveDissolutionSamples(channel);

            if (channel == 1)
            {
                _dissolution1Times.Clear();
                _dissolution1Values.Clear();
                _dissolution1Series.Points.Clear();
                _dissolution1StartTime = DateTime.MinValue;
                Dissolution1Percent = 0;
                Dissolution1RSquared = 0;
            }
            else
            {
                _dissolution2Times.Clear();
                _dissolution2Values.Clear();
                _dissolution2Series.Points.Clear();
                _dissolution2StartTime = DateTime.MinValue;
                Dissolution2Percent = 0;
                Dissolution2RSquared = 0;
            }

            DissolutionCurveStatus = "";
            DissolutionPlotModel.InvalidatePlot(true);
        }

        private void ResetDissolutionSampleState(int channel)
        {
            SetDissolutionSampleRequestActive(channel, false);
            SetDissolutionSamplePromptOpen(channel, false);
        }

        private async Task FinalizeDissolutionChannelAsync(int channel)
        {
            var times = channel == 1 ? _dissolution1Times : _dissolution2Times;
            var values = channel == 1 ? _dissolution1Values : _dissolution2Values;
            if (values.Count == 0)
            {
                DissolutionCurveStatus = $"溶出{channel}无有效曲线数据，未保存结果";
                LocalAlarm = DissolutionCurveStatus;
                return;
            }

            _dissolutionResultChannel = $"溶出{channel}";
            _dissolutionResultRate30Min = GetDissolutionRateAt30Min(times, values);
            _dissolutionResultRSquared = CalculateRSquared(times, values);
            DissolutionPercent = _dissolutionResultRate30Min;
            DissolutionRSquared = _dissolutionResultRSquared;
            if (channel == 1)
                Dissolution1RSquared = _dissolutionResultRSquared;
            else
                Dissolution2RSquared = _dissolutionResultRSquared;

            DissolutionPass = _dissolutionResultRate30Min >= App.CurrentPharmaParams.DissolutionMinPercentAt30min;
            await SaveBatchResult();
        }

        private static double GetDissolutionRateAt30Min(List<double> times, List<double> values)
        {
            if (values.Count == 0)
                return 0;

            int index = 0;
            double nearestDistance = double.MaxValue;
            for (int i = 0; i < times.Count; i++)
            {
                double distance = Math.Abs(times[i] - 30);
                if (distance < nearestDistance)
                {
                    nearestDistance = distance;
                    index = i;
                }
            }

            return values[index];
        }

        private async Task RunDissolutionAsync()
        {
            await StartDissolution1Async();
        }

        private async Task SaveBatchResult(bool? forcedQualified = null)
        {
            try
            {
                double dissolutionRate30Min = CurrentTest == TestType.Dissolution
                    ? _dissolutionResultRate30Min
                    : DissolutionPercent;
                double rsquared = CurrentTest == TestType.Dissolution
                    ? _dissolutionResultRSquared
                    : DissolutionRSquared;

                var batch = new TestBatch
                {
                    TestTime = DateTime.Now,
                    StationId = StationId,
                    SampleName = "样品",

                    // 硬度
                    HardnessAvg = HardnessAvg,
                    HardnessRSD = HardnessRSD,
                    HardnessMax = HardnessMax,
                    HardnessMin = HardnessMin,
                    HardnessTestCount = HardnessTestCount,
                    HardnessInternalMin = HardnessInternalMin,
                    HardnessInternalMax = HardnessInternalMax,

                    // 脆碎度
                    FriabilityLoss = LossPercent,
                    FriabilityTargetRpm = FriabilityTargetRpm,
                    FriabilityTargetTimeSec = FriabilityTargetTimeSec,
                    FriabilityTargetRounds = FriabilityTargetRounds,
                    FriabilityClockwise = FriabilityClockwise,
                    FriabilityRemainingRounds = FriabilityRemainingRounds,
                    WeightBefore = WeightBefore,
                    WeightAfter = WeightAfter,

                    // 崩解
                    DisintegrationTimeSec = DisintegrationSeconds,
                    RemainingTubesAtEnd = RemainingTubes,
                    DisintegrationTargetFreq = 0,
                    DisintegrationTemp = DisintegrationTemp,
                    DisintegrationDosageForm = DisintegrationDosageForm,
                    DisintegrationLimitSeconds = ResolveDisintegrationLimitSeconds(),

                    // 溶出
                    DissolutionChannel = CurrentTest == TestType.Dissolution ? _dissolutionResultChannel : "",
                    DissolutionRate30Min = dissolutionRate30Min,
                    DissolutionTargetRpm = DissolutionTargetRpm,
                    DissolutionRSquared = rsquared,
                    DissolutionSampleInterval = CurrentTest == TestType.Dissolution && _dissolutionResultChannel == "溶出2"
                        ? ToCompatibleSampleInterval(Dissolution2SampleIntervalMin)
                        : ToCompatibleSampleInterval(Dissolution1SampleIntervalMin),
                    Dissolution1SampleInterval = Dissolution1SampleIntervalMin,
                    Dissolution2SampleInterval = Dissolution2SampleIntervalMin,
                    DissolutionUpDownFreq = DissolutionUpDownFreq,
                    HardnessPass = HardnessPass,
                    FriabilityPass = FriabilityPass,
                    DisintegrationPass = DisintegrationPass,
                    DissolutionPass = DissolutionPass,
                    TestType = CurrentTest switch
                    {
                        TestType.Hardness => "硬度",
                        TestType.Friability => "脆碎度",
                        TestType.Disintegration => "崩解",
                        TestType.Dissolution => "溶出",
                        _ => ""
                    },

                    IsQualified = HardnessPass && FriabilityPass && DisintegrationPass && DissolutionPass
                };
                var dissolutionSamples = CurrentTest == TestType.Dissolution
                    ? DissolutionSamplePoints
                        .Where(s => s.ChannelName == _dissolutionResultChannel && s.Percent.HasValue)
                        .ToList()
                    : new List<DissolutionSamplePoint>();

                await Task.Run(() => _db.InsertBatch(batch, dissolutionSamples));


                await Application.Current.Dispatcher.InvokeAsync(() =>
                {
                    string projectName = CurrentTest switch
                    {
                        TestType.Hardness => "硬度",
                        TestType.Friability => "脆碎度",
                        TestType.Disintegration => "崩解",
                        TestType.Dissolution => string.IsNullOrWhiteSpace(_dissolutionResultChannel) ? "溶出" : _dissolutionResultChannel,
                        _ => ""
                    };
                    LocalAlarm = $"{projectName}测试完成";
                });
            }
            catch (Exception ex)
            {
                await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"保存测试结果失败：{ex.Message}"));
            }
        }


        private double CalculateRSquared(List<double> timeMinutes, List<double> concentration)
        {
            if (timeMinutes.Count < 2 || timeMinutes.Count != concentration.Count) return 0;
            int n = timeMinutes.Count;
            double sumX = timeMinutes.Sum();
            double sumY = concentration.Sum();
            double sumXY = timeMinutes.Zip(concentration, (x, y) => x * y).Sum();
            double sumX2 = timeMinutes.Select(x => x * x).Sum();
            double sumY2 = concentration.Select(y => y * y).Sum();

            double numerator = (n * sumXY - sumX * sumY);
            double denominator = Math.Sqrt((n * sumX2 - sumX * sumX) * (n * sumY2 - sumY * sumY));
            if (denominator <= 0 || double.IsNaN(denominator))
                return 0;

            double r = numerator / denominator;
            double result = r * r;
            return double.IsFinite(result) ? result : 0;
        }

        private async Task ExportHistoryAsync()
        {
            var batches = await Task.Run(() => _db.GetBatches(null, 100));
            string path = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), $"检测记录_{DateTime.Now:yyyyMMddHHmmss}.xlsx");
            _excel.ExportToExcel(batches, path);
            await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"导出成功: {path}"));
        }

        private double StandardDeviation(List<double> values)
        {
            if (values.Count == 0) return 0;
            double avg = values.Average();
            double sum = values.Sum(v => Math.Pow(v - avg, 2));
            return Math.Sqrt(sum / values.Count);
        }

    }
}