using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using OxyPlot;
using OxyPlot.Series;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Threading;
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 readonly BalanceService _balance; // ✅ 新增天平服务
        private DispatcherTimer _disintegrationTimer;

        private List<double> _dissolutionTimes = new List<double>();
        private List<double> _dissolutionValues = new List<double>();

        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;
        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;

        // 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 PrintHardnessCommand { get; }

        // 脆碎度新增
        [ObservableProperty] private double _friabilityTargetRpm = 25;
        [ObservableProperty] private int _friabilityTargetTimeSec = 240;
        [ObservableProperty] private bool _friabilityClockwise = true;
        [ObservableProperty] private bool _friabilityCounterClockwise;
        [ObservableProperty] private double _friabilityCurrentRpm;
        [ObservableProperty] private int _friabilityRemainingRounds = 100;

        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 double _dissolutionElapsedTime;
        [ObservableProperty] private double _dissolutionCountdown;
        [ObservableProperty] private double _dissolutionRSquared;

        public IAsyncRelayCommand DissolutionUpCommand { get; }
        public IAsyncRelayCommand DissolutionDownCommand { get; }
        public IAsyncRelayCommand StopDissolutionCommand { get; }
        public IAsyncRelayCommand PrintDissolutionCommand { get; }

        // 崩解新增
        [ObservableProperty] private double _disintegrationTargetFreq = 31;
        public IAsyncRelayCommand StopDisintegrationCommand { get; }
        public IAsyncRelayCommand PrintDisintegrationCommand { get; }

        public PlotModel DissolutionPlotModel { get; }
        private LineSeries _dissolutionSeries;
        private DateTime _dissolutionStartTime;

        // 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;
            _balance = new BalanceService(); // 实例化天平服务（模拟）

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

            StartDissolutionCommand = new AsyncRelayCommand(RunDissolutionAsync);

            ExportHistoryCommand = new AsyncRelayCommand(ExportHistoryAsync);

            // 溶出曲线
            DissolutionPlotModel = new PlotModel { Title = $"工位{StationId} 溶出曲线" };
            _dissolutionSeries = new LineSeries { Title = "溶出度 (%)", Color = OxyColors.Green };
            DissolutionPlotModel.Series.Add(_dissolutionSeries);

            // 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);
            });

            HardnessResetCommand = new AsyncRelayCommand(() =>
            {
                _hardnessResults.Clear();
                HardnessValue = 0;
                HardnessAvg = 0;
                HardnessRSD = 0;
                HardnessCurrentCount = 0;
                HardnessMax = 0;
                HardnessMin = 0;
                Phase = TestPhase.Idle;
                return Task.CompletedTask;
            });

            PrintHardnessCommand = new AsyncRelayCommand(async () => await PrintReport("硬度"));

            // 脆碎度命令
            StopFriabilityCommand = new AsyncRelayCommand(() => {
                //测试停止
                Phase = TestPhase.Idle; return Task.CompletedTask;
            });
            ResetFriabilityCommand = new AsyncRelayCommand(() =>
            {
                FriabilityRemainingRounds = 100; // 剩余圈数重置为默认值（通常是100圈）
                LossPercent = 0;  // 失重率清零
                WeightBefore = 0;  // 脆碎前重量清零
                WeightAfter = 0;// 脆碎后重量清零
                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));
            StopDissolutionCommand = new AsyncRelayCommand(() => { Phase = TestPhase.Idle; return Task.CompletedTask; });
            PrintDissolutionCommand = new AsyncRelayCommand(async () => await PrintReport("溶出度"));

            // 崩解命令
            StopDisintegrationCommand = new AsyncRelayCommand(() => { Phase = TestPhase.Idle; return Task.CompletedTask; });
            PrintDisintegrationCommand = new AsyncRelayCommand(async () => await PrintReport("崩解"));
        }

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

        public async Task UpdateRealTimeData()
        {
            if (Phase != TestPhase.Running) return;
            try
            {
                switch (CurrentTest)
                {
                    case TestType.Hardness:
                        HardnessValue = await _plc.ReadFloatAsync(_plcConfig.HardnessValue);
                        break;
                    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:
                        DissolutionRpm = await _plc.ReadFloatAsync(_plcConfig.DissolutionRpm);
                        DissolutionPercent = await _plc.ReadFloatAsync(_plcConfig.DissolutionPercent);
                        if (_dissolutionStartTime != DateTime.MinValue)
                        {
                            double minutes = (DateTime.Now - _dissolutionStartTime).TotalMinutes;
                            _dissolutionSeries.Points.Add(new DataPoint(minutes, DissolutionPercent));
                            if (_dissolutionSeries.Points.Count > 200) _dissolutionSeries.Points.RemoveAt(0);
                            DissolutionPlotModel.InvalidatePlot(true);
                        }
                        break;
                }
            }
            catch { }
        }

        private async Task RunHardnessAsync()
        {
            if (Phase != TestPhase.Idle) return;
            CurrentTest = TestType.Hardness;
            Phase = TestPhase.Running;
            HardnessPass = false;   // 添加这一行
            _hardnessResults.Clear();

            try
            {
                int count = App.CurrentPharmaParams.HardnessTestCount;
                double min = App.CurrentPharmaParams.HardnessMin_N;
                double max = App.CurrentPharmaParams.HardnessMax_N;

                for (int i = 0; i < count; i++)

                {  // 1. 给PLC发指令：启动单次硬度测试
                    await _plc.WriteCoilAsync((ushort)(StationId == 1 ? _plcConfig.HardnessStartCoil :
                        StationId == 2 ? _plcConfig.HardnessStartCoil2
                        : StationId == 3 ? _plcConfig.HardnessStartCoil3 : 0), true);
                    bool completed = false;
                    while (!completed && Phase == TestPhase.Running)
                    {
                        await Task.Delay(200);// 每200ms轮询一次状态

                        completed = await _plc.ReadCoilAsync(_plcConfig.HardnessCompleteCoil);
                    }
                    double val = await _plc.ReadFloatAsync(_plcConfig.HardnessValue);
                    _hardnessResults.Add(val); // 把结果存到列表里

                    HardnessValue = val;  // 更新界面上的实时测试力值

                    await Task.Delay(1000); // 间隔1秒，再进行下一次测试
                }

                HardnessAvg = _hardnessResults.Average();
                HardnessMax= _hardnessResults.Max();
                HardnessMin = _hardnessResults.Min();

                HardnessCurrentCount = count;
                HardnessRSD = (StandardDeviation(_hardnessResults) / HardnessAvg) * 100;
                HardnessPass = HardnessAvg >= min && HardnessAvg <= max;
                Phase = TestPhase.Completed;//恢复启动按钮
            }
            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;

                // 在保存前设置崩解合格标志：剩余管数为0 且 崩解时间未超时
                //DisintegrationPass = (RemainingTubes == 0 && DisintegrationSeconds <= App.CurrentPharmaParams.DisintegrationMaxSeconds);


                await SaveBatchResult();
            }
        }

        /// 脆碎度测试主逻辑（适配3工位、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;

            try
            {
                ushort startCoil = StationId switch
                {
                    1 => _plcConfig.FriabilityStartCoil,   // 工位1启动线圈
                    2 => _plcConfig.FriabilityStartCoil2,  // 工位2启动线圈
                    3 => _plcConfig.FriabilityStartCoil3,  // 工位3启动线圈
                    _ => 0
                };

                if (startCoil == 0)
                {
                    throw new InvalidOperationException("当前工位未配置脆碎度启动线圈地址");
                }
                WeightBefore = await _balance.ReadWeightAsync();
                await _plc.WriteCoilAsync(startCoil, true);
                int totalRounds = 100;                     // 药典标准脆碎度总圈数：100圈
                double rpm = FriabilityTargetRpm;         // 界面设置的目标转速（r/min）
                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);
                }
                WeightAfter = await _balance.ReadWeightAsync();

                FriabilityCurrentRpm = FriabilityTargetRpm;
                LossPercent = (WeightBefore - WeightAfter) / WeightBefore * 100;//失重率
                FriabilityPass = LossPercent <= App.CurrentPharmaParams.FriabilityMaxLossPercent; //标准值
                // 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 = 100;
                await SaveBatchResult();
            }
        }

        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 _plc.WriteCoilAsync(_plcConfig.DisintegrationStartCoil, true);
                int maxSec = App.CurrentPharmaParams.DisintegrationMaxSeconds;
                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;
                DisintegrationPass = (RemainingTubes == 0 && DisintegrationSeconds <= App.CurrentPharmaParams.DisintegrationMaxSeconds);

                await SaveBatchResult();
            }
        }

        private async Task RunDissolutionAsync()
        {
            if (Phase != TestPhase.Idle) return;
            CurrentTest = TestType.Dissolution;
            Phase = TestPhase.Running;
            DissolutionPass = false;   // 添加这一行
            _dissolutionStartTime = DateTime.Now;
            _dissolutionSeries.Points.Clear();
            _dissolutionTimes.Clear();
            _dissolutionValues.Clear();

            try
            {
                await _plc.WriteCoilAsync(_plcConfig.DissolutionStartCoil, true);
                var sampleTimes = App.CurrentPharmaParams.DissolutionSampleTimes;
                double prevMin = 0;
                foreach (var t in sampleTimes)
                {
                    int delayMs = (int)((t - prevMin) * 60 * 1000);
                    if (delayMs > 0) await Task.Delay(delayMs);
                    double value = await _plc.ReadFloatAsync(_plcConfig.DissolutionPercent);
                    DissolutionPercent = value;
                    _dissolutionTimes.Add(t);
                    _dissolutionValues.Add(value);
                    prevMin = t;
                    await App.Current.Dispatcher.InvokeAsync(() =>
                    {
                        MessageBox.Show($"工位{StationId} 请在{t}分钟取样。当前溶出度: {value:F1}%");
                    });
                }
                // 计算 R²
                _dissolutionRSquared = CalculateRSquared(_dissolutionTimes, _dissolutionValues);
                bool pass = DissolutionPercent >= App.CurrentPharmaParams.DissolutionMinPercentAt30min;
                Phase = TestPhase.Completed;
            }
            catch (Exception ex)
            {
                await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"溶出测试出错: {ex.Message}"));
                Phase = TestPhase.Error;
            }
            finally
            {
                Phase = TestPhase.Idle;
                DissolutionPass = (DissolutionPercent >= App.CurrentPharmaParams.DissolutionMinPercentAt30min);
                await SaveBatchResult();
            }
        }

        private async Task SaveBatchResult(bool? forcedQualified = null)
        {
            try
            {
                // 计算溶出曲线的 R²（需在 RunDissolutionAsync 中计算后存入 _dissolutionRSquared）
                double rsquared = DissolutionRSquared; // 确保此属性在溶出结束后被赋值

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

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

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

                    // 崩解
                    DisintegrationTimeSec = DisintegrationSeconds,
                    RemainingTubesAtEnd = RemainingTubes,
                    DisintegrationTargetFreq = DisintegrationTargetFreq,
                    DisintegrationTemp = DisintegrationTemp,

                    // 溶出
                    DissolutionRate30Min = DissolutionPercent,
                    DissolutionTargetRpm = DissolutionTargetRpm,
                    DissolutionRSquared = rsquared,
                    DissolutionSampleInterval = DissolutionSampleInterval,
                    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
                };
                await Task.Run(() => _db.InsertBatch(batch));


                await Application.Current.Dispatcher.InvokeAsync(() =>
                {
                    // 获取当前测试项目是否合格
                    bool currentPass = CurrentTest switch
                    {
                        TestType.Hardness => HardnessPass,
                        TestType.Friability => FriabilityPass,
                        TestType.Disintegration => DisintegrationPass,
                        TestType.Dissolution => DissolutionPass,
                        _ => false
                    };
                    string projectName = CurrentTest switch
                    {
                        TestType.Hardness => "硬度",
                        TestType.Friability => "脆碎度",
                        TestType.Disintegration => "崩解",
                        TestType.Dissolution => "溶出",
                        _ => ""
                    };
                    LocalAlarm = currentPass ? $"{projectName}测试合格" : $"{projectName}测试不合格";
                });
            }
            catch (Exception ex)
            {
                await App.Current.Dispatcher.InvokeAsync(() => MessageBox.Show($"保存测试结果失败：{ex.Message}"));
            }
        }


        private double CalculateRSquared(List<double> timeMinutes, List<double> concentration)
        {
            if (timeMinutes.Count < 2) return 1;
            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));
            double r = numerator / denominator;
            return r * r;
        }

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

    }
}