///
/// Copyright (c) 2018-2020 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
using Results.Entities;
using Statistics.Resources;

namespace Statistics.UserControls
{
    class DataPoint
    {
        public DateTime StartTime;
        public double RefError;

        public DataPoint(DateTime startTime, double refError)
        {
            StartTime = startTime;
            RefError = refError;
        }
    }


    public partial class StatisticsCtrl : UserControl
    {
        public int Id;								/// Index of the tab page
        public MidOrWaterMetersCtrl MidCtrl;    /// Reference to the parent control
        IList<DataPoint> currentData;

        public StatisticsCtrl()
        {
            InitializeComponent();
            chart1.ChartAreas[0].AxisX.LabelStyle.Format = "dd.MM.yy";
            chart1.ChartAreas[0].AxisX.Interval = 1;
            chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Days;
            currentData = new List<DataPoint>();
        }

        private void updateButton_Click(object sender, EventArgs e)
        {
            if (MidCtrl != null)
            {
                for (int i = 1; i <= 5; i++)
                {
                    chart1.Series[string.Format("Flow {0}", i)].Points.Clear();
                }

                IList<TestRslt> results = MidCtrl.UpdateRequest(Id);

                if (results != null)
                {
                    currentData.Clear();

                    foreach (var r in results)
                    {
                        if (r.ErrorMaster != 0)
                        {
                            for (int i = 1; i <= 5; i++)
                            {
                                if (MidCtrl.IsFlowEnabled(i) && (MidCtrl.FlowFrom(i) <= r.FlowMean) && (r.FlowMean <= MidCtrl.FlowTo(i)))
                                {
                                    chart1.Series[string.Format("Flow {0}", i)].Points.AddXY(r.StartTime, r.ErrorMaster);
                                    currentData.Add(new DataPoint(r.StartTime, r.ErrorMaster));
                                }
                            }
                        }
                    }
                    return;
                }
            }
        }

        private void exportButton_Click(object sender, EventArgs e)
        {
            SaveFileDialog dlg = new SaveFileDialog();
            dlg.Filter = "CSV files (*.csv)|*.csv|All files (*.*)|*.*";

            if (dlg.ShowDialog() == DialogResult.OK)
            {
                using (TextWriter writer = new StreamWriter(dlg.FileName))
                {
                    foreach (var d in currentData)
                    {
                        writer.WriteLine("{0:dd.MM.yyyy HH:mm}; {1}", d.StartTime, d.RefError);
                    }
                }

                MessageBox.Show(string.Format("Data written to file {0}", dlg.FileName));
            }
        }
    }
}