using DeviceCommand.Devices;
using Newtonsoft.Json;
using OxyPlot;
using OxyPlot.Axes;
using OxyPlot.Legends;
using OxyPlot.Series;
using Prism.Commands;
using Prism.Ioc;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using UIShare.GlobalVariable;
using UIShare.ViewModelBase;

namespace PowerAdaptabilityModule.ViewModels
{
    /// <summary>
    /// 电源适应性测试 ViewModel（Chroma61800 交流源一拖三）：
    /// 左侧为设备命令面板（三相输出设置 + LIST 模式），右侧为 A/B/C 三相实时波形图表。
    /// </summary>
    public class PowerAdaptabilityViewModel : NavigateViewModelBase, IDisposable
    {
        #region 常量
        /// <summary>采样周期（毫秒）</summary>
        private const int SampleIntervalMs = 1000;

        /// <summary>三相曲线配色：A 红、B 绿、C 蓝（三张图统一，便于对照）</summary>
        private static readonly OxyColor[] PhaseColors =
            { OxyColor.FromRgb(0xE5, 0x39, 0x35), OxyColor.FromRgb(0x43, 0xA0, 0x47), OxyColor.FromRgb(0x1E, 0x88, 0xE5) };
        #endregion

        #region 私有字段
        private readonly DeviceManager _dm;
        private readonly GlobalInfo _globalInfo;
        private Chroma61800? _dev;
        private CancellationTokenSource? _cmdCts;
        private CancellationTokenSource? _sampleCts;

        /// <summary>采样计时器，记录从开始采集到当前的经过秒数（X 轴）</summary>
        private System.Diagnostics.Stopwatch? _sampleStopwatch;

        // 三相电压时间序列曲线（A/B/C 三相）
        private readonly LineSeries _voltA, _voltB, _voltC;

        // 输出频率时间序列曲线（单条，ALL 模式读一个总频率）
        private readonly LineSeries _freq;
        #endregion

        #region 设备状态属性
        private string _deviceName = "Chroma61800";
        public string DeviceName { get => _deviceName; set => SetProperty(ref _deviceName, value); }

        private bool _isConnected;
        public bool IsConnected { get => _isConnected; set => SetProperty(ref _isConnected, value); }

        private bool _isBusy;
        public bool IsBusy { get => _isBusy; set => SetProperty(ref _isBusy, value); }

        private bool _isSampling;
        /// <summary>是否正在采集波形数据</summary>
        public bool IsSampling { get => _isSampling; set => SetProperty(ref _isSampling, value); }

        private bool _isFrequencySamplingEnabled;
        /// <summary>是否采集频率（默认关闭：频率一般无需持续采集，开启后采样循环才读取并绘制频率曲线）</summary>
        public bool IsFrequencySamplingEnabled { get => _isFrequencySamplingEnabled; set => SetProperty(ref _isFrequencySamplingEnabled, value); }
        #endregion

        #region 图表（三相电压时间序列 + 输出频率时间序列）
        /// <summary>三相电压波形图表</summary>
        public PlotModel VoltagePlot { get; }

        /// <summary>输出频率时间序列图表（受“采集频率”开关控制，默认不采集）</summary>
        public PlotModel FrequencyPlot { get; }
        #endregion

        #region 实时测量值
        private double _voltageA; public double VoltageA { get => _voltageA; set => SetProperty(ref _voltageA, value); }
        private double _voltageB; public double VoltageB { get => _voltageB; set => SetProperty(ref _voltageB, value); }
        private double _voltageC; public double VoltageC { get => _voltageC; set => SetProperty(ref _voltageC, value); }

        private double _frequencyNow;
        /// <summary>当前输出频率 (Hz)</summary>
        public double FrequencyNow { get => _frequencyNow; set => SetProperty(ref _frequencyNow, value); }

        private double _powerNow;
        /// <summary>当前真实输出功率 (W)</summary>
        public double PowerNow { get => _powerNow; set => SetProperty(ref _powerNow, value); }
        #endregion

        #region 输入参数（三相输出设置）
        private double _voltage = 220;
        /// <summary>待设置的交流电压 (V)</summary>
        public double Voltage { get => _voltage; set => SetProperty(ref _voltage, value); }

        private double _frequency = 50;
        /// <summary>待设置的输出频率 (Hz)</summary>
        public double Frequency { get => _frequency; set => SetProperty(ref _frequency, value); }

        private string _waveform = "SINE";
        /// <summary>波形选择</summary>
        public string Waveform { get => _waveform; set => SetProperty(ref _waveform, value); }

        private string _couplingMode = "AC";
        /// <summary>输出耦合模式 (AC / DC / ACDC)</summary>
        public string CouplingMode { get => _couplingMode; set => SetProperty(ref _couplingMode, value); }

        private string _threePhaseRelation = "BALANCE";
        /// <summary>三相关系 (INDEPEND / SAMEFREQ / BALANCE)</summary>
        public string ThreePhaseRelation { get => _threePhaseRelation; set => SetProperty(ref _threePhaseRelation, value); }

        /// <summary>相位选择列表: 0=ALL(三相同时), 1=A相, 2=B相, 3=C相</summary>
        public List<string> PhaseOptions { get; } = new() { "ALL (三相)", "A相 (Φ1)", "B相 (Φ2)", "C相 (Φ3)" };
        private int _selectedPhaseIndex;
        /// <summary>当前选中的相位索引 (0=ALL, 1=A, 2=B, 3=C)</summary>
        public int SelectedPhaseIndex { get => _selectedPhaseIndex; set => SetProperty(ref _selectedPhaseIndex, value); }
        #endregion

        #region 输入参数（LIST 模式 · 三相独立编辑）
        /// <summary>下发完成到启动之间的延时（ms），对应 *D 命令，等待仪器就绪</summary>
        private const int StartDelayMs = 200;

        private string _listTrigger = "AUTO";
        /// <summary>列表触发形态 (AUTO / MANUAL / EXCITE)</summary>
        public string ListTrigger { get => _listTrigger; set => SetProperty(ref _listTrigger, value); }

        private int _listCount;
        /// <summary>列表执行次数 (0 = 无限循环, 最大 65535)</summary>
        public int ListCount { get => _listCount; set => SetProperty(ref _listCount, value); }

        private string _listTimeBase = "TIME";
        /// <summary>列表时间基础 (TIME / CYCLE)</summary>
        public string ListTimeBase { get => _listTimeBase; set => SetProperty(ref _listTimeBase, value); }

        /// <summary>三相各自的 LIST 序列配置（索引 0=A/Φ1, 1=B/Φ2, 2=C/Φ3），INST:EDIT EACH 逐相下发</summary>
        private readonly ListPhaseConfig[] _phaseConfigs = { new(), new(), new() };

        /// <summary>相位编辑选项（对应 INST:NSEL 1/2/3）</summary>
        public List<string> ListPhaseOptions { get; } = new() { "A相 (Φ1)", "B相 (Φ2)", "C相 (Φ3)" };

        private int _listEditPhaseIndex;
        /// <summary>当前正在编辑的相位索引 (0=A, 1=B, 2=C)，切换时下方序列文本框自动刷新为该相内容</summary>
        public int ListEditPhaseIndex
        {
            get => _listEditPhaseIndex;
            set
            {
                if (SetProperty(ref _listEditPhaseIndex, value))
                    RaiseListSequenceChanged();
            }
        }

        /// <summary>当前选中相位的配置对象</summary>
        private ListPhaseConfig CurCfg => _phaseConfigs[_listEditPhaseIndex];

        // —— 以下文本属性均代理到"当前编辑相位"的配置，切换相位时统一刷新 ——
        /// <summary>当前相波形 (FUNC:SHAP:A)</summary>
        public string ListWaveform { get => CurCfg.Waveform; set { if (CurCfg.Waveform != value) { CurCfg.Waveform = value; RaisePropertyChanged(); } } }
        /// <summary>相位角度序列 (LIST:DEGR, °)</summary>
        public string ListDegrText { get => CurCfg.Degr; set { if (CurCfg.Degr != value) { CurCfg.Degr = value; RaisePropertyChanged(); } } }
        /// <summary>AC 起始电压序列 (LIST:VOLT:AC:STAR, V)</summary>
        public string ListVoltAcStartText { get => CurCfg.VoltAcStart; set { if (CurCfg.VoltAcStart != value) { CurCfg.VoltAcStart = value; RaisePropertyChanged(); } } }
        /// <summary>AC 结束电压序列 (LIST:VOLT:AC:END, V)</summary>
        public string ListVoltAcEndText { get => CurCfg.VoltAcEnd; set { if (CurCfg.VoltAcEnd != value) { CurCfg.VoltAcEnd = value; RaisePropertyChanged(); } } }
        /// <summary>DC 起始电压序列 (LIST:VOLT:DC:STAR, V)</summary>
        public string ListVoltDcStartText { get => CurCfg.VoltDcStart; set { if (CurCfg.VoltDcStart != value) { CurCfg.VoltDcStart = value; RaisePropertyChanged(); } } }
        /// <summary>DC 结束电压序列 (LIST:VOLT:DC:END, V)</summary>
        public string ListVoltDcEndText { get => CurCfg.VoltDcEnd; set { if (CurCfg.VoltDcEnd != value) { CurCfg.VoltDcEnd = value; RaisePropertyChanged(); } } }
        /// <summary>起始频率序列 (LIST:FREQ:STAR, Hz)</summary>
        public string ListFreqStartText { get => CurCfg.FreqStart; set { if (CurCfg.FreqStart != value) { CurCfg.FreqStart = value; RaisePropertyChanged(); } } }
        /// <summary>结束频率序列 (LIST:FREQ:END, Hz)</summary>
        public string ListFreqEndText { get => CurCfg.FreqEnd; set { if (CurCfg.FreqEnd != value) { CurCfg.FreqEnd = value; RaisePropertyChanged(); } } }
        /// <summary>静止时间序列 (LIST:DWEL, ms)</summary>
        public string ListDwellText { get => CurCfg.Dwell; set { if (CurCfg.Dwell != value) { CurCfg.Dwell = value; RaisePropertyChanged(); } } }
        /// <summary>波形缓冲顺序 (LIST:SHAP, A/B)</summary>
        public string ListShapeText { get => CurCfg.ShapeSeq; set { if (CurCfg.ShapeSeq != value) { CurCfg.ShapeSeq = value; RaisePropertyChanged(); } } }

        /// <summary>切换编辑相位后，通知所有序列文本框刷新为新相位内容</summary>
        private void RaiseListSequenceChanged()
        {
            RaisePropertyChanged(nameof(ListWaveform));
            RaisePropertyChanged(nameof(ListDegrText));
            RaisePropertyChanged(nameof(ListVoltAcStartText));
            RaisePropertyChanged(nameof(ListVoltAcEndText));
            RaisePropertyChanged(nameof(ListVoltDcStartText));
            RaisePropertyChanged(nameof(ListVoltDcEndText));
            RaisePropertyChanged(nameof(ListFreqStartText));
            RaisePropertyChanged(nameof(ListFreqEndText));
            RaisePropertyChanged(nameof(ListDwellText));
            RaisePropertyChanged(nameof(ListShapeText));
        }
        #endregion

        #region 下拉选项
        public IReadOnlyList<string> WaveformOptions { get; } = new[] { "SINE", "SQUA", "CSIN" };
        public IReadOnlyList<string> CouplingOptions { get; } = new[] { "AC", "DC", "ACDC" };
        public IReadOnlyList<string> RelationOptions { get; } = new[] { "INDEPEND", "SAMEFREQ", "BALANCE" };
        public IReadOnlyList<string> ListTriggerOptions { get; } = new[] { "AUTO", "MANUAL", "EXCITE" };
        public IReadOnlyList<string> ListTimeBaseOptions { get; } = new[] { "TIME", "CYCLE" };
        #endregion

        #region 试验预设（测试项文件：D:\acp\源测试，一键载入大纲典型波形）
        /// <summary>测试项文件默认存储目录（保存与查询均在此目录）</summary>
        private const string PresetStorageDir = @"D:\acp\源测试";

        /// <summary>测试项文件扩展名</summary>
        private const string PresetFileExt = ".json";

        /// <summary>测试项文件目录提示（供界面显示）</summary>
        public string PresetStorageHint => $"测试项文件目录：{PresetStorageDir}";

        // 从磁盘加载的测试项集合（源真相为 PresetStorageDir 下的 .json 文件）
        private List<ListPreset> _presets = new();
        /// <summary>测试项集合（由 PresetStorageDir 下的文件加载而来）</summary>
        public IReadOnlyList<ListPreset> Presets => _presets;

        // 供 ComboBox 显示的名称列表，随磁盘刷新
        private List<string> _presetOptions = new();
        /// <summary>测试项名称列表（供 ComboBox 显示）</summary>
        public IReadOnlyList<string> PresetOptions => _presetOptions;

        private string _presetName = "";
        /// <summary>当前测试项名称（保存时作为文件名；载入后自动填充，便于覆盖保存）</summary>
        public string PresetName { get => _presetName; set => SetProperty(ref _presetName, value); }

        private string _presetNote = "";
        /// <summary>当前测试项说明（随文件保存，载入后自动填充）</summary>
        public string PresetNote { get => _presetNote; set => SetProperty(ref _presetNote, value); }

        private int _selectedPresetIndex = -1;
        /// <summary>当前选中的测试项索引（-1 表示未选择）</summary>
        public int SelectedPresetIndex
        {
            get => _selectedPresetIndex;
            set
            {
                if (SetProperty(ref _selectedPresetIndex, value))
                {
                    // 选中后把名称/说明填入编辑框，便于修改后另存或覆盖保存
                    if (value >= 0 && value < _presets.Count)
                    {
                        PresetName = _presets[value].Name;
                        PresetNote = _presets[value].Note;
                    }
                }
            }
        }
        #endregion

        #region 日志
        private string _responseLog = "";
        /// <summary>操作与采样日志</summary>
        public string ResponseLog { get => _responseLog; set => SetProperty(ref _responseLog, value); }
        #endregion

        #region 命令
        public ICommand QueryIdnCommand { get; }
        public ICommand ResetCommand { get; }
        public ICommand OutputOnCommand { get; }
        public ICommand OutputOffCommand { get; }
        public ICommand RelayOnCommand { get; }
        public ICommand RelayOffCommand { get; }
        public ICommand ApplyCouplingCommand { get; }
        public ICommand SetThreePhaseModeCommand { get; }
        public ICommand SetSinglePhaseModeCommand { get; }
        public ICommand ApplyRelationCommand { get; }
        public ICommand SetVoltageCommand { get; }
        public ICommand SetFrequencyCommand { get; }
        public ICommand SetWaveformCommand { get; }
        public ICommand SetFixedModeCommand { get; }
        public ICommand EnterListModeCommand { get; }
        public ICommand LoadPresetCommand { get; }
        public ICommand SavePresetCommand { get; }
        public ICommand DeletePresetCommand { get; }
        public ICommand CopyPhaseToThreeCommand { get; }
        public ICommand DownloadThreePhaseListCommand { get; }
        public ICommand ListStopCommand { get; }
        public ICommand StartSamplingCommand { get; }
        public ICommand StopSamplingCommand { get; }
        public ICommand ClearChartsCommand { get; }
        #endregion

        public PowerAdaptabilityViewModel(IContainerProvider containerProvider) : base(containerProvider)
        {
            _dm = containerProvider.Resolve<DeviceManager>();
            _globalInfo = containerProvider.Resolve<GlobalInfo>();

            // 初始化三相电压时间序列图表（X=时间秒, Y=实测 RMS 电压, 叠加 A/B/C 三相）
            VoltagePlot = BuildTimeSeriesPlot("三相电压", "V");
            (_voltA, _voltB, _voltC) = AddThreePhaseSeries(VoltagePlot);

            // 输出频率时间序列图表（单条曲线，受“采集频率”开关控制）
            FrequencyPlot = BuildTimeSeriesPlot("输出频率", "Hz");
            _freq = NewPhaseSeries("频率", OxyColor.FromRgb(0x8E, 0x24, 0xAA));
            FrequencyPlot.Series.Add(_freq);

            // 初始化测试项文件目录（首次运行迁移内置预设），再从磁盘加载测试项
            EnsurePresetStorage();
            RefreshPresets();

            #region 命令初始化
            QueryIdnCommand = new DelegateCommand(async () =>
                await Exec(async () => Log("IDN: " + await _dev!.查询设备信息Async(Ct()))));

            ResetCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.复位Async(Ct()); Log("设备已复位"); }));

            OutputOnCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置输出开关Async(true, Ct()); Log("输出已开启"); }));

            OutputOffCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置输出开关Async(false, Ct()); Log("输出已关闭"); }));

            RelayOnCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置输出继电器Async(true, Ct()); Log("输出继电器已开启"); }));

            RelayOffCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置输出继电器Async(false, Ct()); Log("输出继电器已关闭"); }));

            ApplyCouplingCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置耦合模式Async(CouplingMode, Ct()); Log($"耦合模式={CouplingMode}"); }));

            SetThreePhaseModeCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置单三相模式Async(true, Ct()); Log("已切换为三相模式"); }));

            SetSinglePhaseModeCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置单三相模式Async(false, Ct()); Log("已切换为单相模式"); }));

            ApplyRelationCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置三相关系Async(ThreePhaseRelation, Ct()); Log($"三相关系={ThreePhaseRelation}"); }));

            SetVoltageCommand = new DelegateCommand(async () =>
                await Exec(async () =>
                {
                    await ApplyPhaseAsync();
                    await _dev!.设置交流电压Async(Voltage, Ct());
                    Log($"交流电压={Voltage} V → {PhaseLabel}");
                }));

            SetFrequencyCommand = new DelegateCommand(async () =>
                await Exec(async () =>
                {
                    await ApplyPhaseAsync();
                    await _dev!.设置频率Async(Frequency, Ct());
                    Log($"输出频率={Frequency} Hz → {PhaseLabel}");
                }));

            SetWaveformCommand = new DelegateCommand(async () =>
                await Exec(async () =>
                {
                    await ApplyPhaseAsync();
                    await _dev!.设置波形Async(Waveform, Ct());
                    Log($"波形={Waveform} → {PhaseLabel}");
                }));

            SetFixedModeCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置操作模态Async("FIXED", Ct()); Log("已切换为 FIXED 固定模式"); }));

            EnterListModeCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.设置操作模态Async("LIST", Ct()); Log("已切换为 LIST 模式"); }));

            // 载入测试项：把选中测试项的三相序列与基础参数一次性填充到界面
            LoadPresetCommand = new DelegateCommand(() =>
            {
                if (SelectedPresetIndex < 0 || SelectedPresetIndex >= Presets.Count)
                {
                    Log("请先在下拉框选择一项测试项");
                    return;
                }
                var p = Presets[SelectedPresetIndex];
                ListCount = p.Count;
                ListTrigger = p.Trigger;
                ListTimeBase = p.TimeBase;
                for (int i = 0; i < 3 && i < p.Phases.Length; i++)
                    _phaseConfigs[i] = p.Phases[i].Clone();

                ListEditPhaseIndex = 0;   // 切到 A 相显示（若原本就是 0，setter 不触发刷新，故下方手动刷新）
                RaiseListSequenceChanged();
                PresetName = p.Name;      // 填充名称/说明，便于修改后覆盖保存
                PresetNote = p.Note;
                Log($"已载入测试项：{p.Name}（次数={(p.Count == 0 ? "无限" : p.Count.ToString())} 触发={p.Trigger} 时基={p.TimeBase}）");
            });

            // 保存当前界面的 LIST 配置为测试项文件（写入 D:\acp\源测试\{名称}.json）
            SavePresetCommand = new DelegateCommand(SaveCurrentPreset);

            // 删除当前选中的测试项文件（带二次确认）
            DeletePresetCommand = new DelegateCommand(DeleteCurrentPreset);

            // 以当前编辑相位为模板复制到三相，B/C 相相位角按 ±120° 自动偏移，生成对称三相序列
            CopyPhaseToThreeCommand = new DelegateCommand(() =>
            {
                var src = _phaseConfigs[_listEditPhaseIndex];
                for (int p = 0; p < 3; p++)
                {
                    if (p == _listEditPhaseIndex) continue;
                    var clone = src.Clone();
                    clone.Degr = OffsetDegr(src.Degr, (p - _listEditPhaseIndex) * 120.0);
                    _phaseConfigs[p] = clone;
                }
                RaiseListSequenceChanged();
                Log($"已将 [{ListPhaseOptions[_listEditPhaseIndex]}] 序列复制到三相（B/C 相相位角自动 ±120° 偏移）");
            });

            // 一次性下发三相独立 LIST 并启动，严格遵循仪器要求的命令顺序
            DownloadThreePhaseListCommand = new DelegateCommand(async () => await Exec(async () =>
            {
                // 若上一次 LIST 仍在执行，先等待其结束（TRIG:STATE? = OFF）再改写参数
                await 等待List空闲Async();

                await _dev!.清除错误队列Async(Ct());                 // *CLS
                await _dev.设置单三相模式Async(true, Ct());           // INST:PHAS THREE
                await _dev.设置编辑方式Async("EACH", Ct());           // INST:EDIT EACH（逐相独立编辑）
                await _dev.设置列表执行次数Async(ListCount, Ct());    // LIST:COUN（0=无限循环）
                await _dev.设置列表触发形态Async(ListTrigger, Ct());  // LIST:TRIG
                await _dev.设置列表时间基础Async(ListTimeBase, Ct()); // LIST:BASE

                for (int p = 0; p < 3; p++)
                {
                    await _dev.选择相位Async(p + 1, Ct());            // INST:NSEL 1|2|3
                    await 下发单相序列Async(_phaseConfigs[p]);        // FUNC:SHAP:A + LIST:xxx 序列
                }

                await _dev.延时Async(StartDelayMs, Ct());             // *D 200（等待仪器就绪）
                await _dev.设置操作模态Async("LIST", Ct());           // OUTP:MODE LIST
                await _dev.触发列表执行Async(true, Ct());             // TRIG ON

                Log($"三相独立 LIST 已下发并启动（触发={ListTrigger} 次数={(ListCount == 0 ? "无限" : ListCount.ToString())} 时基={ListTimeBase}）");
            }));

            ListStopCommand = new DelegateCommand(async () =>
                await Exec(async () => { await _dev!.触发列表执行Async(false, Ct()); Log("LIST 已停止执行（TRIG OFF）"); }));

            StartSamplingCommand = new DelegateCommand(StartSampling);
            StopSamplingCommand = new DelegateCommand(StopSampling);
            ClearChartsCommand = new DelegateCommand(ClearCharts);
            #endregion

            Initialize();
        }

        #region 初始化 / 导航
        /// <summary>
        /// 查找 Chroma61800 设备实例：优先当前作用域 DeviceManager，回退全局 HardwarePool（跨作用域共享实例）。
        /// </summary>
        private void Initialize()
        {
            Chroma61800? found = null;
            string? fn = null;

            foreach (var kv in _dm.DeviceMap)
            {
                if (kv.Value is Chroma61800 it) { found = it; fn = kv.Key; break; }
            }

            if (found == null)
            {
                foreach (var kv in _globalInfo.HardwarePool)
                {
                    if (kv.Value.IsValueCreated && kv.Value.Value is Chroma61800 c) { found = c; fn = kv.Key; break; }
                }
            }

            _dev = found;
            DeviceName = fn ?? "Chroma61800 (未找到)";
            IsConnected = _dev?.IsConnected ?? false;

            Log(found != null
                ? $"已关联设备 [{DeviceName}]，连接:{(IsConnected ? "已连接" : "未连接")}"
                : "未找到 Chroma61800 设备，请先在设置界面添加并启用该设备");
        }

        public override void OnNavigatedTo(NavigationContext navigationContext)
        {
            Initialize();
        }

        public override void OnNavigatedFrom(NavigationContext navigationContext)
        {
            // 离开页面时停止采样，避免后台持续占用设备通信
            StopSampling();
        }
        #endregion

        #region 数据采集
        private void StartSampling()
        {
            if (_dev == null) { Log("未关联 Chroma61800 设备，无法采集"); return; }
            if (IsSampling) return;

            IsSampling = true;
            _sampleStopwatch = System.Diagnostics.Stopwatch.StartNew();
            _sampleCts = new CancellationTokenSource();
            var token = _sampleCts.Token;
            _ = Task.Run(() => SamplingLoopAsync(token), token);
            Log($"开始采集（周期 {SampleIntervalMs} ms）");
        }

        private void StopSampling()
        {
            if (!IsSampling) return;
            IsSampling = false;
            _sampleStopwatch?.Stop();
            try { _sampleCts?.Cancel(); } catch { }
            _sampleCts?.Dispose();
            _sampleCts = null;
            Log("停止采集");
        }

        /// <summary>
        /// 采样循环：通过 INST:COUP NONE + INST:NSEL 逐相切换读取三相交流电压，
        /// 恢复 ALL 后读取总功率；频率仅在“采集频率”开关开启时读取（一般不采集）。
        /// </summary>
        private async Task SamplingLoopAsync(CancellationToken token)
        {
            while (!token.IsCancellationRequested)
            {
                try
                {
                    if (_dev != null && _dev.IsConnected)
                    {
                        // 切换为独立相位模式
                        await _dev.设置相位耦合Async("NONE", token);

                        // A 相 (Φ1)
                        await _dev.选择相位Async(1, token);
                        double vA = await _dev.读取交流电压Async(token);

                        // B 相 (Φ2)
                        await _dev.选择相位Async(2, token);
                        double vB = await _dev.读取交流电压Async(token);

                        // C 相 (Φ3)
                        await _dev.选择相位Async(3, token);
                        double vC = await _dev.读取交流电压Async(token);

                        // 恢复 ALL 模式后读取总功率；频率按开关决定是否采集
                        await _dev.设置相位耦合Async("ALL", token);
                        double power = await _dev.读取真实功率Async(token);
                        double freq = IsFrequencySamplingEnabled
                            ? await _dev.读取频率Async(token)
                            : double.NaN;

                        double elapsedSec = _sampleStopwatch?.Elapsed.TotalSeconds ?? 0;

                        var dispatcher = Application.Current?.Dispatcher;
                        if (dispatcher != null)
                        {
                            _ = dispatcher.BeginInvoke(new Action(() =>
                            {
                                AppendSample(elapsedSec, vA, vB, vC, freq, power);
                                IsConnected = _dev.IsConnected;
                            }));
                        }
                    }
                }
                catch (OperationCanceledException) { break; }
                catch (Exception ex)
                {
                    Log($"采样异常：{ex.Message}");
                }

                try { await Task.Delay(SampleIntervalMs, token); }
                catch (OperationCanceledException) { break; }
            }
        }

        /// <summary>
        /// 追加一个采样点到电压 / 频率时间序列图表（UI 线程调用）。
        /// <para>X 轴为采集开始后的经过秒数；电压为三相 RMS，频率仅在采集开关开启（非 NaN）时追加。</para>
        /// </summary>
        private void AppendSample(double elapsedSec, double vA, double vB, double vC, double freq, double power)
        {
            // 三相电压
            _voltA.Points.Add(new DataPoint(elapsedSec, vA));
            _voltB.Points.Add(new DataPoint(elapsedSec, vB));
            _voltC.Points.Add(new DataPoint(elapsedSec, vC));

            // 频率（开关关闭时 freq 为 NaN，不追加曲线）
            bool hasFreq = !double.IsNaN(freq);
            if (hasFreq) _freq.Points.Add(new DataPoint(elapsedSec, freq));

            // 实时数值
            VoltageA = vA;
            VoltageB = vB;
            VoltageC = vC;
            if (hasFreq) FrequencyNow = freq;
            PowerNow = power;

            VoltagePlot.InvalidatePlot(true);
            if (hasFreq) FrequencyPlot.InvalidatePlot(true);
        }

        private void ClearCharts()
        {
            foreach (var s in new[] { _voltA, _voltB, _voltC, _freq })
            {
                s.Points.Clear();
            }
            _sampleStopwatch?.Restart();
            VoltagePlot.InvalidatePlot(true);
            FrequencyPlot.InvalidatePlot(true);
            Log("已清空波形数据，计时器已重置");
        }
        #endregion

        #region 图表构建
        /// <summary>
        /// 构建时间序列图表：横轴为经过时间（秒），纵轴为对应物理量实测 RMS 值，自动缩放。
        /// </summary>
        /// <param name="title">图表标题（如"三相电压"）</param>
        /// <param name="unit">纵轴单位（V / A / W）</param>
        private static PlotModel BuildTimeSeriesPlot(string title, string unit)
        {
            var pm = new PlotModel
            {
                Title = $"{title} ({unit})",
                PlotAreaBorderColor = OxyColors.LightGray,
                Background = OxyColors.White
            };
            pm.Axes.Add(new LinearAxis
            {
                Position = AxisPosition.Bottom,
                Title = "时间 (s)",
                Minimum = 0,
                Maximum = 10,
                MajorGridlineStyle = LineStyle.Dot,
                MinorGridlineStyle = LineStyle.None,
                StringFormat = "0.0",
                IsZoomEnabled = true,
                IsPanEnabled = true
            });
            pm.Axes.Add(new LinearAxis
            {
                Position = AxisPosition.Left,
                Title = unit,
                MajorGridlineStyle = LineStyle.Dot,
                MinorGridlineStyle = LineStyle.None,
                IsZoomEnabled = true,
                IsPanEnabled = true
            });
            pm.Legends.Add(new Legend
            {
                LegendPosition = LegendPosition.RightTop,
                LegendBackground = OxyColor.FromAColor(200, OxyColors.White),
                LegendBorder = OxyColors.LightGray
            });
            return pm;
        }

        /// <summary>向图表添加 A/B/C 三相时间序列曲线（红/绿/蓝，带标记点）。</summary>
        private static (LineSeries A, LineSeries B, LineSeries C) AddThreePhaseSeries(PlotModel plot)
        {
            var a = NewPhaseSeries("A 相", PhaseColors[0]);
            var b = NewPhaseSeries("B 相", PhaseColors[1]);
            var c = NewPhaseSeries("C 相", PhaseColors[2]);
            plot.Series.Add(a);
            plot.Series.Add(b);
            plot.Series.Add(c);
            return (a, b, c);
        }

        /// <summary>创建一条相曲线（带小圆标记，便于辨识离散采样点）。</summary>
        private static LineSeries NewPhaseSeries(string title, OxyColor color) => new LineSeries
        {
            Title = title,
            Color = color,
            StrokeThickness = 1.8,
            MarkerType = MarkerType.Circle,
            MarkerSize = 3,
            MarkerFill = color
        };

        #endregion

        #region 测试项文件读写（D:\acp\源测试）
        /// <summary>
        /// 确保测试项目录存在；若目录中尚无任何测试项文件，则把内置大纲预设迁移写入为 .json 文件。
        /// </summary>
        private void EnsurePresetStorage()
        {
            try
            {
                if (!Directory.Exists(PresetStorageDir))
                    Directory.CreateDirectory(PresetStorageDir);

                var existing = Directory.GetFiles(PresetStorageDir, "*" + PresetFileExt);
                if (existing.Length > 0) return;   // 已有测试项文件，无需迁移

                // 首次运行：把内置大纲预设逐项迁移为文件
                var seeds = BuildPresets();
                foreach (var p in seeds)
                    WritePresetFile(p);

                Log($"已将 {seeds.Count} 项内置测试项迁移到 {PresetStorageDir}");
            }
            catch (Exception ex)
            {
                Log($"初始化测试项目录失败：{ex.Message}");
            }
        }

        /// <summary>从磁盘重新加载测试项列表，刷新下拉框并保持选中项有效。</summary>
        private void RefreshPresets()
        {
            var list = new List<ListPreset>();
            try
            {
                if (Directory.Exists(PresetStorageDir))
                {
                    foreach (var file in Directory.GetFiles(PresetStorageDir, "*" + PresetFileExt).OrderBy(f => f))
                    {
                        try
                        {
                            var json = File.ReadAllText(file);
                            var item = JsonConvert.DeserializeObject<ListPreset>(json);
                            if (item != null) list.Add(item);
                        }
                        catch (Exception ex)
                        {
                            Log($"测试项文件解析失败 [{Path.GetFileName(file)}]：{ex.Message}");
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Log($"读取测试项目录失败：{ex.Message}");
            }

            _presets = list;
            _presetOptions = list.Select(p => p.Name).ToList();
            RaisePropertyChanged(nameof(PresetOptions));
            RaisePropertyChanged(nameof(PresetStorageHint));

            if (_selectedPresetIndex >= _presets.Count)
                SelectedPresetIndex = -1;
        }

        /// <summary>把一个测试项写入 D:\acp\源测试\{清洗后名称}.json（缩进格式化，便于人工查看）。</summary>
        private void WritePresetFile(ListPreset preset)
        {
            string path = Path.Combine(PresetStorageDir, SanitizeFileName(preset.Name) + PresetFileExt);
            string json = JsonConvert.SerializeObject(preset, Formatting.Indented);
            File.WriteAllText(path, json);
        }

        /// <summary>
        /// 保存当前界面的 LIST 配置为测试项文件（名称取自“测试项名称”输入框）。
        /// <para>快照当前三相序列配置 + 执行次数/触发/时基 + 说明，写入后刷新列表并选中该项。</para>
        /// </summary>
        private void SaveCurrentPreset()
        {
            string name = (PresetName ?? "").Trim();
            if (string.IsNullOrEmpty(name))
            {
                Log("请先在“测试项名称”填写要保存的名称");
                return;
            }

            try
            {
                if (!Directory.Exists(PresetStorageDir))
                    Directory.CreateDirectory(PresetStorageDir);

                // 用当前界面参数 + 三相配置快照构建测试项
                var phases = new[]
                {
                    _phaseConfigs[0].Clone(),
                    _phaseConfigs[1].Clone(),
                    _phaseConfigs[2].Clone(),
                };
                var preset = new ListPreset(name, PresetNote ?? "", ListCount, phases, ListTrigger, ListTimeBase);
                WritePresetFile(preset);

                RefreshPresets();
                int idx = _presets.FindIndex(p => p.Name == name);
                if (idx >= 0) SelectedPresetIndex = idx;

                Log($"测试项已保存：{Path.Combine(PresetStorageDir, SanitizeFileName(name) + PresetFileExt)}");
            }
            catch (Exception ex)
            {
                Log($"保存测试项失败：{ex.Message}");
            }
        }

        /// <summary>
        /// 删除当前选中的测试项文件（带二次确认），删除后刷新列表。
        /// </summary>
        private void DeleteCurrentPreset()
        {
            if (SelectedPresetIndex < 0 || SelectedPresetIndex >= _presets.Count)
            {
                Log("请先在下拉框选择要删除的测试项");
                return;
            }

            var p = _presets[SelectedPresetIndex];
            string path = Path.Combine(PresetStorageDir, SanitizeFileName(p.Name) + PresetFileExt);

            var confirm = MessageBox.Show(
                $"确定删除测试项「{p.Name}」？\n文件：{path}\n此操作不可撤销。",
                "删除确认", MessageBoxButton.YesNo, MessageBoxImage.Warning);
            if (confirm != MessageBoxResult.Yes) return;

            try
            {
                if (File.Exists(path))
                    File.Delete(path);

                SelectedPresetIndex = -1;
                RefreshPresets();
                Log($"已删除测试项：{path}");
            }
            catch (Exception ex)
            {
                Log($"删除测试项失败：{ex.Message}");
            }
        }

        /// <summary>清洗文件名中的非法字符（Windows），空白名回退为“未命名”。</summary>
        private static string SanitizeFileName(string name)
        {
            if (string.IsNullOrWhiteSpace(name)) return "未命名";
            foreach (char c in Path.GetInvalidFileNameChars())
                name = name.Replace(c, '_');
            return name.Trim();
        }
        #endregion

        #region 辅助
        /// <summary>创建 10 秒超时的取消令牌（命令用）。</summary>
        private CancellationToken Ct() => (_cmdCts = new CancellationTokenSource(TimeSpan.FromSeconds(10))).Token;

        /// <summary>当前选中相位的显示标签</summary>
        private string PhaseLabel => SelectedPhaseIndex switch
        {
            1 => "A相",
            2 => "B相",
            3 => "C相",
            _ => "ALL"
        };

        /// <summary>
        /// 根据 SelectedPhaseIndex 发送 INST:COUP / INST:NSEL 命令切换相位上下文。
        /// <para>索引 0 → INST:COUP ALL (三相同时)；索引 1~3 → INST:COUP NONE + INST:NSEL n</para>
        /// </summary>
        private async Task ApplyPhaseAsync()
        {
            if (SelectedPhaseIndex == 0)
            {
                await _dev!.设置相位耦合Async("ALL", Ct());
            }
            else
            {
                await _dev!.设置相位耦合Async("NONE", Ct());
                await _dev!.选择相位Async(SelectedPhaseIndex, Ct());
            }
        }

        /// <summary>统一的设备命令执行包装：防重入、异常捕获与日志。</summary>
        private async Task Exec(Func<Task> action)
        {
            if (_dev == null) { Log("错误：未找到 Chroma61800 设备实例，请检查设备配置"); return; }
            if (IsBusy) return;

            IsBusy = true;
            try
            {
                await action();
                IsConnected = _dev.IsConnected;
            }
            catch (OperationCanceledException) { Log("命令超时或已取消"); }
            catch (Exception ex) { Log($"错误：{ex.Message}"); }
            finally { IsBusy = false; }
        }

        /// <summary>线程安全的日志输出（自动切回 UI 线程，保留最近内容）。</summary>
        private void Log(string message)
        {
            var dispatcher = Application.Current?.Dispatcher;
            if (dispatcher != null && !dispatcher.CheckAccess())
            {
                _ = dispatcher.BeginInvoke(new Action(() => Log(message)));
                return;
            }

            var line = $"[{DateTime.Now:HH:mm:ss}] {message}";
            ResponseLog = ResponseLog.Length > 6000
                ? line + "\n" + ResponseLog[..4000]
                : line + "\n" + ResponseLog;
        }

        /// <summary>解析逗号/空格/分号分隔的数值序列。</summary>
        private static double[] ParseDoubles(string text)
        {
            if (string.IsNullOrWhiteSpace(text)) return Array.Empty<double>();
            return text.Split(new[] { ',', '，', ' ', '\t', ';' }, StringSplitOptions.RemoveEmptyEntries)
                       .Select(s => double.TryParse(s.Trim(), out double v) ? (double?)v : null)
                       .Where(v => v.HasValue)
                       .Select(v => v!.Value)
                       .ToArray();
        }

        /// <summary>解析波形缓冲顺序（A/B）序列。</summary>
        private static string[] ParseShapes(string text)
        {
            if (string.IsNullOrWhiteSpace(text)) return Array.Empty<string>();
            return text.Split(new[] { ',', '，', ' ', '\t', ';' }, StringSplitOptions.RemoveEmptyEntries)
                       .Select(s => s.Trim().ToUpperInvariant())
                       .ToArray();
        }

        /// <summary>
        /// 下发单个相位的 LIST 序列（调用前须已通过 INST:NSEL 选定目标相、并已 INST:EDIT EACH）。
        /// <para>依次下发 FUNC:SHAP:A 波形，以及 DEGR / VOLT:AC / VOLT:DC / FREQ / DWEL / SHAP 各序列，留空的序列跳过。</para>
        /// </summary>
        private async Task 下发单相序列Async(ListPhaseConfig cfg)
        {
            if (!string.IsNullOrWhiteSpace(cfg.Waveform))
                await _dev!.设置波形Async(cfg.Waveform.Trim(), Ct());          // FUNC:SHAP:A

            var degr = ParseDoubles(cfg.Degr);
            if (degr.Length > 0) await _dev!.设置列表相位角度顺序Async(degr, Ct());   // LIST:DEGR

            var vAcS = ParseDoubles(cfg.VoltAcStart);
            if (vAcS.Length > 0) await _dev!.设置列表AC起始电压顺序Async(vAcS, Ct());  // LIST:VOLT:AC:STAR
            var vAcE = ParseDoubles(cfg.VoltAcEnd);
            if (vAcE.Length > 0) await _dev!.设置列表AC结束电压顺序Async(vAcE, Ct());  // LIST:VOLT:AC:END

            var vDcS = ParseDoubles(cfg.VoltDcStart);
            if (vDcS.Length > 0) await _dev!.设置列表DC起始电压顺序Async(vDcS, Ct());  // LIST:VOLT:DC:STAR
            var vDcE = ParseDoubles(cfg.VoltDcEnd);
            if (vDcE.Length > 0) await _dev!.设置列表DC结束电压顺序Async(vDcE, Ct());  // LIST:VOLT:DC:END

            var fS = ParseDoubles(cfg.FreqStart);
            if (fS.Length > 0) await _dev!.设置列表起始频率顺序Async(fS, Ct());        // LIST:FREQ:STAR
            var fE = ParseDoubles(cfg.FreqEnd);
            if (fE.Length > 0) await _dev!.设置列表结束频率顺序Async(fE, Ct());        // LIST:FREQ:END

            var dwell = ParseDoubles(cfg.Dwell);
            if (dwell.Length > 0) await _dev!.设置列表静止时间顺序Async(dwell, Ct());  // LIST:DWEL

            var shapes = ParseShapes(cfg.ShapeSeq);
            if (shapes.Length > 0) await _dev!.设置列表波形顺序Async(shapes, Ct());    // LIST:SHAP
        }

        /// <summary>
        /// 轮询 TRIG:STATE? 等待当前 LIST 执行结束（返回 OFF），避免在执行过程中改写参数导致仪器报错。
        /// </summary>
        /// <param name="timeoutMs">最长等待时间（ms），超时后仍继续下发并给出提示</param>
        private async Task 等待List空闲Async(int timeoutMs = 8000)
        {
            if (_dev == null) return;
            var sw = System.Diagnostics.Stopwatch.StartNew();
            while (sw.ElapsedMilliseconds < timeoutMs)
            {
                try
                {
                    if (!await _dev.查询触发状态Async(Ct())) return; // OFF：已空闲
                }
                catch { return; } // 查询失败不阻塞下发流程
                await Task.Delay(200);
            }
            Log("等待 LIST 空闲超时（可能仍在执行），将继续下发，请留意仪器状态");
        }

        /// <summary>
        /// 将相位角序列整体偏移指定角度（结果对 360 取模，保持 0~359.9），用于生成对称三相的 DEGR。
        /// </summary>
        private static string OffsetDegr(string degrText, double offset)
        {
            var vals = ParseDoubles(degrText);
            if (vals.Length == 0) return degrText;
            return string.Join(",", vals.Select(v =>
            {
                double d = (v + offset) % 360.0;
                if (d < 0) d += 360.0;
                return d.ToString("0.#", CultureInfo.InvariantCulture);
            }));
        }

        /// <summary>
        /// 构建三相对称的 LIST 相位配置：以给定参数为 A 相，B/C 相复制后 DEGR 自动 +120°/+240°。
        /// 适用于三相平衡试验（电压/频率范围、骤变、瞬时跌落等）。DWEL 单位 ms。
        /// </summary>
        private static ListPhaseConfig[] Sym(string waveform, string degr, string vacS, string vacE,
            string vdcS, string vdcE, string fS, string fE, string dwell, string shape = "")
        {
            var a = new ListPhaseConfig
            {
                Waveform = waveform,
                Degr = degr,
                VoltAcStart = vacS,
                VoltAcEnd = vacE,
                VoltDcStart = vdcS,
                VoltDcEnd = vdcE,
                FreqStart = fS,
                FreqEnd = fE,
                Dwell = dwell,
                ShapeSeq = shape
            };
            var b = a.Clone(); b.Degr = OffsetDegr(degr, 120);
            var c = a.Clone(); c.Degr = OffsetDegr(degr, 240);
            return new[] { a, b, c };
        }

        /// <summary>
        /// 构建大纲典型试验预设集合（仅含 LIST 模式可实现的项）。
        /// <para>名称含大纲章节号；对称试验用 <see cref="Sym"/> 生成三相，不对称试验逐相显式定义。</para>
        /// </summary>
        private static IReadOnlyList<ListPreset> BuildPresets() => new List<ListPreset>
        {
            // ===== 5.1 交流电压范围（三相平衡渐变，2 循环，DWEL 单位 ms）=====
            new ListPreset("5.1 上限电压范围 220→265V",
                "三相平衡：额定 220V 线性升至上限 265V 再回落，各段 90s，2 循环。判定 A。",
                2, Sym("SINE", "0,0", "220,265", "265,220", "", "", "50,50", "50,50", "90000,90000")),
            new ListPreset("5.1 下限电压范围 220→85V",
                "三相平衡：220V 降至下限 85V 再回升，各段 90s，2 循环。判定 B。",
                2, Sym("SINE", "0,0", "220,85", "85,220", "", "", "50,50", "50,50", "90000,90000")),
            new ListPreset("5.1 上限保护电压 220→275V",
                "验证过压保护点与恢复点：220V 升至 275V 再回落，2 循环。判定 C。",
                2, Sym("SINE", "0,0", "220,275", "275,220", "", "", "50,50", "50,50", "90000,90000")),
            new ListPreset("5.1 下限保护电压 220→80V",
                "验证欠压保护点与恢复点：220V 降至 80V 再回升，2 循环。判定 C。",
                2, Sym("SINE", "0,0", "220,80", "80,220", "", "", "50,50", "50,50", "90000,90000")),

            // ===== 5.3 交流频率范围（220V 恒定，频率渐变，2 循环）=====
            new ListPreset("5.3 上限频率范围 50→65Hz",
                "220V 恒定，频率 50Hz 升至 65Hz 再回落，各段 60s，2 循环。判定 B。",
                2, Sym("SINE", "0,0", "220,220", "220,220", "", "", "50,65", "65,50", "60000,60000")),
            new ListPreset("5.3 下限频率范围 50→40Hz",
                "220V 恒定，频率 50Hz 降至 40Hz 再回升，各段 60s，2 循环。判定 B。",
                2, Sym("SINE", "0,0", "220,220", "220,220", "", "", "50,40", "40,50", "60000,60000")),
            new ListPreset("5.3 上限保护频率 50→75Hz",
                "验证过频保护点与恢复点：50Hz 升至 75Hz 再回落，2 循环。判定 C。",
                2, Sym("SINE", "0,0", "220,220", "220,220", "", "", "50,75", "75,50", "60000,60000")),

            // ===== 5.4 交流电压骤变（指定相位角阶跃，2 循环）=====
            new ListPreset("5.4 上限电压骤变 220→265V@90°",
                "稳态 220V(5s)→在 90° 相位瞬间跳到 265V(0.5s)→跳回。改 DEGR 中间值可切 0/180/270°。判定 B。",
                2, Sym("SINE", "0,90,0", "220,265,220", "220,265,220", "", "", "50,50,50", "50,50,50", "5000,500,5000")),
            new ListPreset("5.4 下限电压骤变 220→90V@90°",
                "稳态 220V→在 90° 瞬间跌到 90V(0.5s)→恢复。判定 B。",
                2, Sym("SINE", "0,90,0", "220,90,220", "220,90,220", "", "", "50,50,50", "50,50,50", "5000,500,5000")),

            // ===== 5.5 交流频率骤变（2 循环）=====
            new ListPreset("5.5 上限频率骤变 50→75Hz",
                "220V 恒定，频率 50Hz 瞬间跳到 75Hz(1s)再回落。判定 B。",
                2, Sym("SINE", "0,90,0", "220,220,220", "220,220,220", "", "", "50,75,50", "50,75,50", "5000,1000,5000")),
            new ListPreset("5.5 下限频率骤变 50→40Hz",
                "220V 恒定，频率 50Hz 瞬间跌到 40Hz(1s)再回升。判定 B。",
                2, Sym("SINE", "0,90,0", "220,220,220", "220,220,220", "", "", "50,40,50", "50,40,50", "5000,1000,5000")),

            // ===== 5.12 瞬时电压跌落/冲击（1ms 突变，2 循环）=====
            new ListPreset("5.12 0°冲击 310V/1ms",
                "稳态 220V→0° 相位冲击到 310V 峰值持续 1ms→恢复。1ms 接近 LIST 最小 dwell，若不精确请改 BASE CYCLE。判定不低于 C。",
                2, Sym("SINE", "0,0,0", "220,310,220", "220,310,220", "", "", "50,50,50", "50,50,50", "5000,1,5000")),
            new ListPreset("5.12 90°跌落 0V/1ms",
                "稳态 220V→90° 相位跌到 0V 持续 1ms→恢复。判定不低于 C。",
                2, Sym("SINE", "0,90,0", "220,0,220", "220,0,220", "", "", "50,50,50", "50,50,50", "5000,1,5000")),

            // ===== 单相深跌（不对称，A 相深跌 / B·C 相浅跌，无限循环）=====
            new ListPreset("5.x 单相深跌 A相11.5V（不对称示例）",
                "A 相跌到 11.5V、B/C 相跌到 200.1V，跌落 280ms，前后各稳态 20s；三相 DEGR 基准 0/120/240、中间点各异。无限循环，需手动停止。",
                0, new[]
                {
                    new ListPhaseConfig { Waveform = "SINE", Degr = "0,0,0",      VoltAcStart = "230,11.5,230",  VoltAcEnd = "230,11.5,230",  VoltDcStart = "10,10,10", VoltDcEnd = "10,10,10", FreqStart = "50,50,50", FreqEnd = "50,50,50", Dwell = "20000,280,20000" },
                    new ListPhaseConfig { Waveform = "SINE", Degr = "120,92,120",  VoltAcStart = "230,200.1,230", VoltAcEnd = "230,200.1,230", VoltDcStart = "10,10,10", VoltDcEnd = "10,10,10", FreqStart = "50,50,50", FreqEnd = "50,50,50", Dwell = "20000,280,20000" },
                    new ListPhaseConfig { Waveform = "SINE", Degr = "240,268,240", VoltAcStart = "230,200.1,230", VoltAcEnd = "230,200.1,230", VoltDcStart = "10,10,10", VoltDcEnd = "10,10,10", FreqStart = "50,50,50", FreqEnd = "50,50,50", Dwell = "20000,280,20000" },
                }),

            // ===== 6.3 直流电压骤变（注意量程与耦合模式）=====
            new ListPreset("6.3 直流骤变 680→860→450V【注意量程】",
                "直流侧瞬时骤变。⚠ 需先在“耦合模式”设为 DC；且 680~860V 已超 Chroma61800.cs 标注的 DC 量程(-424.2~414.2V)，须确认设备为高压选配档，否则命令会被拒绝或截顶。",
                2, Sym("SINE", "0,0,0,0", "", "", "680,860,450,680", "680,860,450,680", "", "", "5000,5000,5000,5000")),
        };
        #endregion

        public void Dispose()
        {
            StopSampling();
            try { _cmdCts?.Cancel(); } catch { }
            _cmdCts?.Dispose();
        }
    }

    /// <summary>
    /// 单个相位的 LIST 序列配置（对应界面一组序列文本框）。
    /// <para>三相独立下发（INST:EDIT EACH + INST:NSEL）时，每相持有一份本配置，
    /// 各字段均为逗号分隔的原始文本，下发时再解析为数值序列。</para>
    /// </summary>
    public class ListPhaseConfig
    {
        /// <summary>该相波形 (FUNC:SHAP:A)，如 SINE / SQUA</summary>
        public string Waveform { get; set; } = "SINE";
        /// <summary>相位角度序列 (LIST:DEGR, °)</summary>
        public string Degr { get; set; } = "";
        /// <summary>AC 起始电压序列 (LIST:VOLT:AC:STAR, V)</summary>
        public string VoltAcStart { get; set; } = "";
        /// <summary>AC 结束电压序列 (LIST:VOLT:AC:END, V)</summary>
        public string VoltAcEnd { get; set; } = "";
        /// <summary>DC 起始电压序列 (LIST:VOLT:DC:STAR, V)</summary>
        public string VoltDcStart { get; set; } = "";
        /// <summary>DC 结束电压序列 (LIST:VOLT:DC:END, V)</summary>
        public string VoltDcEnd { get; set; } = "";
        /// <summary>起始频率序列 (LIST:FREQ:STAR, Hz)</summary>
        public string FreqStart { get; set; } = "";
        /// <summary>结束频率序列 (LIST:FREQ:END, Hz)</summary>
        public string FreqEnd { get; set; } = "";
        /// <summary>静止时间序列 (LIST:DWEL, ms)</summary>
        public string Dwell { get; set; } = "";
        /// <summary>波形缓冲顺序 (LIST:SHAP, A/B)</summary>
        public string ShapeSeq { get; set; } = "";

        /// <summary>浅拷贝一份配置（用于"复制到三相"）。</summary>
        public ListPhaseConfig Clone() => (ListPhaseConfig)MemberwiseClone();
    }

    /// <summary>
    /// 大纲典型试验预设：一次载入即可填充三相 LIST 序列与基础参数（次数/触发/时基）。
    /// </summary>
    public class ListPreset
    {
        /// <summary>预设名称（含大纲章节号，供下拉显示）</summary>
        public string Name { get; }
        /// <summary>试验说明与判定等级提示</summary>
        public string Note { get; }
        /// <summary>列表执行次数 (LIST:COUN，0 = 无限循环)</summary>
        public int Count { get; }
        /// <summary>触发形态 (LIST:TRIG)</summary>
        public string Trigger { get; }
        /// <summary>时间基础 (LIST:BASE)</summary>
        public string TimeBase { get; }
        /// <summary>三相序列配置（索引 0=A/Φ1, 1=B/Φ2, 2=C/Φ3）</summary>
        public ListPhaseConfig[] Phases { get; }

        [JsonConstructor]
        public ListPreset(string name, string note, int count, ListPhaseConfig[] phases,
                          string trigger = "AUTO", string timeBase = "TIME")
        {
            Name = name;
            Note = note;
            Count = count;
            Phases = phases;
            Trigger = trigger;
            TimeBase = timeBase;
        }
    }
}