using LiveCharts;
using LiveCharts.Wpf;
using MathNet.Numerics.LinearAlgebra;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;

namespace FLY.HeatingHelper.UI.UiModule
{
    public class UC_FrameDiffViewModel : INotifyPropertyChanged
    {
        IThickHeatData mdata;

        public UC_FrameDiffViewModel()
        {
        }
        /// <summary>
        /// 两个ID
        /// </summary>
        public int FrameIdx1 { get; set; } = -1;
        public int FrameIdx2 { get; set; } = -1;

        public void Init(IThickHeatData dat)
        {
            mdata = dat;
            PropertyChanged += DataSelecter_PropertyChanged;
        }

        Vector<double> thick1;
        Vector<double> thick2;
        Vector<double> heat1;
        Vector<double> heat2;
        Vector<double> thickDiff;
        Vector<double> heatDiff;

        void Update()
        {
            if (FrameIdx1 < 0 || FrameIdx2 < 0 || (mdata is null))
            {
                return;
            }
            thick1 = Vector<double>.Build.DenseOfArray(mdata.GetThicksByIndex(FrameIdx1, -1, -1));
            thick2 = Vector<double>.Build.DenseOfArray(mdata.GetThicksByIndex(FrameIdx2, -1, -1));
            heat1 = Vector<double>.Build.DenseOfArray(mdata.GetHeatsByIndex(FrameIdx1, -1, -1));
            heat2 = Vector<double>.Build.DenseOfArray(mdata.GetHeatsByIndex(FrameIdx2, -1, -1));
            thickDiff = thick2 - thick1;
            heatDiff = heat1 - heat2;
            UpdateSeries();
        }

        public double[] DS_vthick { get; set; }
        public double[] DS_vheat { get; set; }

        private void UpdateSeries()
        {
            DS_vthick = thickDiff.ToArray();
            DS_vheat = heatDiff.ToArray();
        }

        private void DataSelecter_PropertyChanged(object s, PropertyChangedEventArgs e)
        {
            if (e.PropertyName == "FrameIdx1" || e.PropertyName == "FrameIdx2")
            {
                Update();
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}