using Arction.Wpf.Charting;
using Arction.Wpf.Charting.Axes;
using Arction.Wpf.Charting.Views.ViewXY;
using Microsoft.Win32;
using mseedChart.Core;
using mseedChart.MainModule.Models;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using SharpDX.DirectWrite;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Threading;

namespace mseedChart.MainModule.ViewModels
{
    public class ChartPlotViewModel : BindableBase
    {

        public ChartPlotViewModel()
        {
            _dispatcher = Application.Current.Dispatcher;
            _wavesModel = new WavesModel();
            CreateChart();
            (Application.Current.MainWindow as System.Windows.Window).Closing += ApplicationClosingDispose;

            string fileName = "2023-03-31T07:43:15.464036";
            ShowWave(null,obj:fileName);
            string eventTimeStr = fileName;
            string datePath = eventTimeStr.Substring(0, 4) + eventTimeStr.Substring(5, 2) + eventTimeStr.Substring(8, 2);
            string dataFilePath = RegionNames.MseedFilePath + "\\" + datePath + "\\";
            string dataFileName = "HA." + eventTimeStr.Substring(0, 4) + eventTimeStr.Substring(5, 2)
               + eventTimeStr.Substring(8, 2) + eventTimeStr.Substring(10, 3)
               + eventTimeStr.Substring(14, 2) + eventTimeStr.Substring(17, 2) + ".01" + RegionNames.DataTypeString;
            string jsonStr = ".json";
            _wavesModel.Json2MmEvent(dataFilePath+dataFileName+jsonStr);
        }

        #region 字段
        Dispatcher _dispatcher;
        public int CurPoints;

        int _channelCount = 0;         
        double _samplingFrequency = 500;  // 采样频率 (Hz).
        double _previousX = 0;         

        WavesModel _wavesModel;
        private int _lChartCount = 1;
        public List<StationModel> smList;
        #endregion

        #region 属性
        /// <summary>
        /// 波形控件数量
        /// </summary>
        public int LChartCount
        {
            get { return _lChartCount; }
            set { _lChartCount = value; }
        }
        private LightningChart _lChartAll;
        /// <summary>
        /// 所有波形
        /// </summary>
        public LightningChart LChartALL
        {
            get { return _lChartAll; }
            set { _lChartAll = value; }
        }

        private FrameworkElement childContent;
        public FrameworkElement ChildContent
        {
            get { return childContent; }
            set { childContent = value; }
        }

        private Grid gridChart;

        public Grid GridChart
        {
            get { return gridChart; }
            set { gridChart = value; }
        }
        private MmEvent _eventTime;

        public MmEvent EventTime    
        {
            get { return _eventTime; }
            set { _eventTime = value; }
        }




        #endregion

        #region 事件
        public DelegateCommand<object> AxesYVisibleCommand => new DelegateCommand<object>(AxesYVisible);
        public DelegateCommand FileSelectorCommand => new DelegateCommand(FileSelector);

        private void AxesYVisible(object isCheck)
        {
            if (_lChartAll != null)
            {
                bool yAxesVisible = ((bool)isCheck == true);
                _lChartAll.BeginUpdate();

                AxisY lastYAxis = _lChartAll.ViewXY.YAxes.Last();

                _lChartAll.ViewXY.AxisLayout.AutoAdjustMargins = false;

                foreach (AxisY yAxis in _lChartAll.ViewXY.YAxes)
                {
                    if (yAxis != lastYAxis)
                    {
                        yAxis.Visible = yAxesVisible;
                    }
                    else
                    {
                        yAxis.Visible = true;
                        yAxis.LabelsVisible = yAxesVisible;
                        //yAxis.MajorDivTickStyle.Visible = yAxesVisible;
                        //yAxis.MinorDivTickStyle.Visible = yAxesVisible;
                        yAxis.Title.Visible = yAxesVisible;
                        if (yAxesVisible)
                        {
                            yAxis.AxisThickness = 3;
                        }
                        else
                        {
                            yAxis.AxisThickness = 0;
                        }
                      //  lastYAxis.MiniScale.Visible = !yAxesVisible;
                    }
                }
                _lChartAll.EndUpdate();

            }
        }

        private void FileSelector()
        {
            OpenFileDialog openFileDialog = new OpenFileDialog
            {
                RestoreDirectory = true,
                Filter = ".json|*.json|.mseed|*.mseed|.txt|*.txt",
            };
            if (openFileDialog.ShowDialog() == true)
            {
                ShowWave(openFileDialog.FileName);           
            }
        }
        #endregion
        public void UpdateWavesFromTxt(string fn)
        {
            string allStr;
            smList = new List<StationModel>();
            using (StreamReader streamReader = new StreamReader(fn))
            {
                allStr = streamReader.ReadToEnd();
            }
            if (allStr.Length > 0)
            {
                string[] strLines = allStr.Trim().Split(new char[] { '\n' });
                List<string> strList = strLines.ToList();
                int cnt = strList.Count;
                string[] snStr = strLines[0].Trim().Split(',');
                string tmpName = snStr[0].Substring(14, 3);
                CurPoints = int.Parse(snStr[1].Trim().Split(' ')[0]);
                StationModel station = new StationModel();
                station.Name = tmpName;
                station.dz = new List<double>();
                station.dn = new List<double>();
                station.de = new List<double>();

                int channelFlag = 0;

                for (int i = 1; i < strLines.Length; i++)
                {
                    string row = strLines[i].Trim();
                    if (strLines[i].Contains("HA"))
                    {
                        string[] rowStr = strLines[i].Split(',');
                        string chnStr1 = rowStr[0].Substring(21, 3);
                        if (chnStr1 == "SHZ")
                        {
                            smList.Add(station);
                            station = new StationModel();
                            station.Name = rowStr[0].Substring(14, 3);
                            channelFlag = 0;//Z
                        }
                        else if (chnStr1 == "SHN")
                        {
                            channelFlag = 1;//N
                        }
                        else
                        {
                            channelFlag = 2;//E
                        }
                    }
                    else
                    {
                        switch (channelFlag)
                        {
                            case 0://Z
                                station.dz.Add(double.Parse(row));
                                break;
                            case 1://N
                                station.dn.Add(double.Parse(row));
                                break;
                            case 2://E
                                station.de.Add(double.Parse(row));
                                break;
                        }
                    }
                }
                smList.Add(station);
                smList.Reverse();
            }
        }
        public void MSeed2Asc(string filePath, string savePath)
        {
            using (Process compiler = new Process())
            {
                compiler.StartInfo.FileName = "mseed2ascii.exe";
                compiler.StartInfo.Arguments = filePath + " -o " + savePath;
                compiler.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                compiler.Start();
                compiler.WaitForExit();
            }
        }
      
        private void CreateChart()
        {
            if (LChartALL != null)
            {
                LChartALL = null;
            }
            LChartALL = new LightningChart();
            LChartALL.Title.Align = ChartTitleAlignment.TopCenter;
            LChartALL.ChartRenderOptions.DeviceType = RendererDeviceType.AutoPreferD11;
            LChartALL.ChartRenderOptions.LineAAType2D = LineAntiAliasingType.QLAA;

            LChartALL.Title.Text = "事件波形";
            //  LChartALL.Title.Color = Colors.Red;
            LChartALL.Title.Font = new WpfFont("等线", 20);

            //轴属性和布局
            LChartALL.ViewXY.AxisLayout.YAxesLayout = YAxesLayout.Stacked;
            LChartALL.ViewXY.AxisLayout.SegmentsGap = 0;
            LChartALL.ViewXY.ZoomPanOptions.PanDirection = PanDirection.Horizontal;
            LChartALL.ViewXY.ZoomPanOptions.WheelZooming = WheelZooming.Horizontal;
            LChartALL.ViewXY.AxisLayout.YAxisAutoPlacement = YAxisAutoPlacement.AllLeft;
            LChartALL.ViewXY.AxisLayout.YAxisTitleAutoPlacement = true;
            LChartALL.ViewXY.AxisLayout.AutoAdjustMargins = false;

            LChartALL.ViewXY.ZoomPanOptions.DevicePrimaryButtonAction = UserInteractiveDeviceButtonAction.None;
            LChartALL.ViewXY.ZoomPanOptions.DeviceSecondaryButtonAction = UserInteractiveDeviceButtonAction.None;
            LChartALL.ViewXY.ZoomPanOptions.WheelZooming = WheelZooming.Off;

            //X轴设置
            LChartALL.ViewXY.XAxes[0].AllowScrolling = false;
            LChartALL.ViewXY.XAxes[0].PanningEnabled = false;
            LChartALL.ViewXY.XAxes[0].SweepingGap = 0;
            // LChartALL.ViewXY.XAxes[0].ValueType = AxisValueType.Number;
            LChartALL.ViewXY.XAxes[0].AutoFormatLabels = false;
            //  LChartALL.ViewXY.XAxes[0].LabelsNumberFormat = "N0";
            // LChartALL.ViewXY.XAxes[0].MajorGrid.Pattern = LinePattern.Solid;

            //图表背景颜色
            LChartALL.ViewXY.GraphBackground.Color = Colors.White;
            //LChartALL.ViewXY.GraphBackground.GradientFill = GradientFill.Solid;
            LChartALL.ViewXY.GraphBackground.GradientColor = Colors.White;
            LChartALL.ChartBackground.GradientFill = GradientFill.Solid;
            LChartALL.ChartBackground.Color = Color.FromArgb(0, 0, 0, 0);
            GridChart = new Grid();
            GridChart.ColumnDefinitions.Add(new ColumnDefinition());
            GridChart.Name = "chartGrid";
            GridChart.Children.Add(LChartALL);

            this.ChildContent = GridChart;
        }
        private void ShowWave(string filePath, string obj = "2023-03-29T06:41:21.348")
        {
            string EventTimeStr = obj;
            string datePath = EventTimeStr.Substring(0, 4) + EventTimeStr.Substring(5, 2) + EventTimeStr.Substring(8, 2);
            string dataFilePath = RegionNames.MseedFilePath + "\\" + datePath + "\\";
            string dataFileName = "HA." + EventTimeStr.Substring(0, 4) + EventTimeStr.Substring(5, 2)
                + EventTimeStr.Substring(8, 2) + EventTimeStr.Substring(10, 3)
                + EventTimeStr.Substring(14, 2) + EventTimeStr.Substring(17, 2) + ".01" + RegionNames.DataTypeString;
            string mseedStr = ".mseed";
            string asciiSavePath = RegionNames.TxtFilePath + "\\" + datePath + "\\" + dataFileName + ".txt";
            if (filePath != null) asciiSavePath = filePath;
            if (!Directory.Exists(dataFilePath))
            {
                Directory.CreateDirectory(dataFilePath);
            }
            if (!Directory.Exists(Path.GetDirectoryName(asciiSavePath)))
            {
                Directory.CreateDirectory(Path.GetDirectoryName(asciiSavePath));
            }

            if (!File.Exists(asciiSavePath))
            {
                MSeed2Asc(dataFilePath + dataFileName + mseedStr, asciiSavePath);
            }
            UpdateWavesFromTxt(asciiSavePath);
            _channelCount = smList.Count * 3;
            UpdateChart();
            UpdateChartData();
        }
        

        private void UpdateChart()
        {
        
            DisposeAllAndClear(LChartALL.ViewXY.YAxes);
            DisposeAllAndClear(LChartALL.ViewXY.SampleDataSeries);

            LChartALL.ViewXY.YAxes.AddRange(_wavesModel.CreateYAxisChart(smList, LChartALL));
            int seriesIndex = 0;
            foreach (var axisY in LChartALL.ViewXY.YAxes)
            {
                axisY.LabelsColor = Colors.Black;
                //  axisY.AxisColor = Colors.Black;
                axisY.Title.Shadow.DropColor = Colors.Transparent;
                axisY.Title.Shadow.ContrastColor = Colors.Transparent;

                axisY.AllowAutoYFit = false;
                axisY.Units.Visible = false;
                axisY.LabelsAngle = 0;
                axisY.LabelsFont.Size = 8;
                axisY.Title.Angle = 0;
                axisY.MajorGrid.Visible = true;
                axisY.MinorGrid.Visible = false;
                axisY.MajorGrid.Pattern = LinePattern.Solid;

                axisY.AutoDivSpacing = false;
                //  axisY.AutoDivSeparationPercent = 100;
                axisY.Visible = true;
                //  axisY.MajorDiv = 1;
                axisY.MajorDivCount = 2;
                axisY.MajorDivTickStyle.Visible = true;
                axisY.MinorDivTickStyle.Visible = false;
                axisY.MajorDivTickStyle.Alignment = seriesIndex % 2 == 0 ? Alignment.Near : Alignment.Far;
                axisY.MajorDivTickStyle.LineLength = 6;
                axisY.MajorDivTickStyle.Color = Colors.Black;
                axisY.Title.Color = Colors.Black;
                axisY.Title.Font = new WpfFont("Segoe UI", 10, false, false);
                // axisY.Title.HorizontalAlign = seriesIndex % 2 == 0 ? YAxisTitleAlignmentHorizontal.Left : YAxisTitleAlignmentHorizontal.Right;
                axisY.PanningEnabled = false;
                axisY.AllowScrolling = false;
                axisY.AllowScaling = false;

                seriesIndex++;
            }

            LChartALL.ViewXY.LegendBoxes[0].Position = LegendBoxPositionXY.RightCenter;
            LChartALL.ViewXY.LegendBoxes[0].Offset.SetValues(-10, 180);
            LChartALL.ViewXY.LegendBoxes[0].Layout = LegendBoxLayout.Vertical;
            LChartALL.ViewXY.LegendBoxes[0].ShowIcons = false;
            LChartALL.ViewXY.AutoSpaceLegendBoxes = true;
            LChartALL.ViewXY.AxisLayout.SegmentsGap = 3;
            LChartALL.ViewXY.LegendBoxes[0].Shadow.Visible =false;
            LChartALL.ViewXY.XAxes[0].Maximum = CurPoints / _samplingFrequency;
            LChartALL.ViewXY.XAxes[0].LabelsColor = Colors.Black;

            LChartALL.ViewXY.SampleDataSeries.AddRange(
                _wavesModel.GetSampleDataSeriesPingPu(smList, LChartALL, LChartALL.ViewXY.XAxes[0],
                LChartALL.ViewXY.YAxes, _samplingFrequency));
        }
        private void UpdateChartData()
        {
            double[][] multiChannelData = new double[smList.Count * 3][];
            try
            {
                for (int channelIndex = 0; channelIndex < smList.Count; channelIndex++)
                {
                    multiChannelData[channelIndex * 3] = smList[channelIndex].dz.ToArray();
                    multiChannelData[channelIndex * 3 + 1] = smList[channelIndex].dn.ToArray();
                    multiChannelData[channelIndex * 3 + 2] = smList[channelIndex].de.ToArray();
                }
                // Invoke FeedNewDataToChart.
                _dispatcher.Invoke(() =>
                {
                    FeedNewDataToChar(multiChannelData);
                });
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private void ApplicationClosingDispose(object sender, CancelEventArgs e)
        {
            if (LChartALL != null)
            {
                LChartALL.Dispose();
                LChartALL = null;
            }
        }

        private void DisposeAllAndClear<T>(List<T> list) where T : IDisposable
        {
            if (list == null)
            {
                return;
            }

            while (list.Count > 0)
            {
                int lastInd = list.Count - 1;
                T item = list[lastInd]; // take item ref from list. 
                list.RemoveAt(lastInd); // remove item first
                if (item != null)
                {
                    (item as IDisposable).Dispose();     // then dispose it. 
                }
            }
        }
        public void Dispose()
        {
            gridChart.Children.Clear();

            if (LChartALL != null)
            {
                LChartALL.Dispose();
                LChartALL = null;
            }
        }

        private void FeedNewDataToChar(double[][] data)
        {
            LChartALL.BeginUpdate();

            _wavesModel.CreateAxisYEventTime(EventTime, LChartALL.ViewXY); 
            for (int channelIndex = 0; channelIndex < _channelCount; channelIndex++)
            {
                LChartALL.ViewXY.SampleDataSeries[channelIndex].AddSamples(data[channelIndex], true);
            }
           // _previousX = (double)_samplesOutput / _samplingFrequency;

          //  LChartALL.ViewXY.XAxes[0].ScrollPosition = _previousX;
            LChartALL.EndUpdate();

        }

    }
}