using Avalonia.Controls;
using CommunityToolkit.Mvvm.Input;
using OxyPlot;
using OxyPlot.Legends;
using OxyPlot.Series;
using Shaker.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace ShakerApp.ViewModels
{
    internal class RandomTransferFunctionViewModel:DisplayViewModelBase<IModel>
    {

        public void InitTransferFunctionData(double[] transferFunction)
        {
            int start = (int)(RandomConfigViewModel.Instance.MinFrequency / RandomConfigViewModel.Instance.FrequencyResolution);
            int len = (int)(((double)RandomConfigViewModel.Instance.MaxFrequency - RandomConfigViewModel.Instance.MinFrequency) / RandomConfigViewModel.Instance.FrequencyResolution);
            List<DataPoint> dataPoints = new List<DataPoint>();
            for(int i=0;i<len;i++)
            {
                dataPoints.Add(new DataPoint((i+start)*RandomConfigViewModel.Instance.FrequencyResolution,transferFunction[ i+start]));
            }
            PlotModel.InvalidatePlot(false);
            (PlotModel.Series[0] as LineSeries)!.ItemsSource = dataPoints;
            PlotModel.InvalidatePlot(true);
        }
        private RandomTransferFunctionViewModel()
        {
            Content = typeof(Views.RandomTransferFunctionView);
            ButtonVisibily = false;
            PlotModel.Axes.Add(new OxyPlot.Axes.LogarithmicAxis()
            {
                Title = App.Current?.FindResource("Frequency")+"",
                Unit = "Hz",
                Position = OxyPlot.Axes.AxisPosition.Bottom,
                MaximumPadding =0,
                MinimumPadding =0,
                MajorGridlineStyle = LineStyle.Solid,
                Key = "X",
            });
            PlotModel.Axes.Add(new OxyPlot.Axes.LogarithmicAxis()
            {
                Title = App.Current?.FindResource("Ampt") + "",
                Position = OxyPlot.Axes.AxisPosition.Left,
                MajorGridlineStyle = LineStyle.Solid,
                MaximumPadding =0,
                MinimumPadding =0,
                Key = "Y",
            });
            PlotModel.Series.Add(new OxyPlot.Series.LineSeries()
            {
                Title = App.Current?.FindResource("TransferFunction") + "",
                XAxisKey = "X",
                YAxisKey = "Y",
                DataFieldX = nameof(DataPoint.X),
                DataFieldY = nameof(DataPoint.Y),
            });
            PlotModel.Title = App.Current?.FindResource("TransferFunction") + "";
            PlotModel.Legends.Add(new Legend()
            {
                ShowInvisibleSeries = true,
            });
            GetEvent(ViewModels.ShakerSettingViewModel.LANGUAGECHANGEDEVENT).Subscrip((_, _) =>
            {
                PlotModel.Axes[0].Title = App.Current?.FindResource("Frequency") + "";
                PlotModel.Axes[1].Title = App.Current?.FindResource("Ampt") + "";
                PlotModel.Series[0].Title = App.Current?.FindResource("TransferFunction") + "";
                PlotModel.Title = App.Current?.FindResource("TransferFunction") + "";
            });
        }
        static RandomTransferFunctionViewModel()
        {

        }
        public ICommand StartCommand=>new RelayCommand(Start);
        private void Start()
        {
            if (RandomConfigViewModel.Instance.PlanItems.Count == 0)
            {
                ShowError(App.Current?.FindResource("RandomPlanCountIsZero") + "");
                return;
            }
            if (RandomConfigViewModel.Instance.PlanItems.Sum(x => x.Value.Time) <= 0)
            {
                ShowError(App.Current?.FindResource("RandomPlanTimeIsZero") + "");
                return;
            }
            CommunicationViewModel.Instance.LocalCommunication?.GetEvent(Topic.STARTRANDOMTEST)?.Publish(this, null);
            CloseWindowAction?.Invoke();
        }
        protected override void Cancel()
        {
            CloseWindowAction?.Invoke();
        }
        public PlotModel PlotModel { get; } = new PlotModel();
        public static RandomTransferFunctionViewModel Instance { get; } = new RandomTransferFunctionViewModel();
    }
}