using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CPFTrack
{
    public partial class FormStripChart : Form
    {
        private Form1 form1;
        public FormStripChart(Form1 f1)
        {
            InitializeComponent();
           // form1 = new Form1();
            form1 = f1;
            form1.OnIUSBLUpdate += new Form1.IUSBLUpdateHandler(updateIUSBL);
        }

        private void updateIUSBL(object sender, Form1.IUSBLData e)
        {
            updateStripChart(e);
            
        }

        private static TimeSpan xSpan = new TimeSpan(0, 2, 0);
        private static DateTime xMin;
        private static double startDepth = 0.0;
        private static double depthRange = 10.0;

        private static DateTime lastTimeStamp;
        private static double lastDepth;
        private static bool firstValue = true;

        private void updateStripChart(Form1.IUSBLData iusblData)
        {
            xMin = iusblData.timeStamp - xSpan;

            if (!autoScaleY)
            {
                startDepth = (double)nudStartDepth.Value;
                depthRange = (double)nudRange.Value;
 
                chartStripChart.ChartAreas[0].AxisY.Maximum = startDepth;
                chartStripChart.ChartAreas["ChartArea1"].AxisY.Minimum = startDepth - depthRange;
            }

            if (running)
            {
                chartStripChart.ChartAreas[0].AxisX.Maximum = iusblData.timeStamp.ToOADate();
                chartStripChart.ChartAreas["ChartArea1"].AxisX.Minimum = (iusblData.timeStamp - timeSpan).ToOADate();
  
                chartStripChart.Series["Series1"].Points.AddXY(iusblData.timeStamp.ToOADate(), iusblData.zValue);
                Console.WriteLine("Points count = " + chartStripChart.Series["Series1"].Points.Count.ToString());
                
                tbDepth.Text = iusblData.zValue.ToString("f1");

                if(firstValue)
                {
                    lastTimeStamp = iusblData.timeStamp;
                    lastDepth = iusblData.zValue;
                    firstValue = false;
                }
                double dt;
                dt = (iusblData.timeStamp.Ticks - lastTimeStamp.Ticks) / 10000000.0;
                rtbVelocity.Text = ((iusblData.zValue - lastDepth) / dt).ToString("f3");
            }
        }

        private void FormStripChart_FormClosing(object sender, FormClosingEventArgs e)
        {
            running = false;
        }
   
        private static TimeSpan timeSpan = new TimeSpan(0, 2, 0);
        private void nudPeriod_ValueChanged(object sender, EventArgs e)
        {
            timeSpan = TimeSpan.FromMinutes((double)nudTimeSpan.Value);
        }

        private static bool autoScaleY = true;
        private void cbAutoScaleY_CheckedChanged(object sender, EventArgs e)
        {
            autoScaleY = !autoScaleY;
            if (autoScaleY)
            {
                chartStripChart.ChartAreas[0].AxisY.Minimum = double.NaN;
                chartStripChart.ChartAreas[0].AxisY.Maximum = double.NaN;
            }
        }

        private static bool running = true;
        private void cbRunning_CheckedChanged(object sender, EventArgs e)
        {
            running = !running;
        }
    }
}