///
/// Copyright (c) 2017-2020 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Windows.Forms;
using log4net;
using Config.Entities;
using Common.Forms;
using TBF.Resources;
using TBF.UI.Shared;

namespace TBF.UI.Bench.Metrology
{
	public partial class MetrologyDlgTempMeterTab : UserControl, IMetrologyDlgTab
	{
		static readonly ILog log = LogManager.GetLogger(typeof(MetrologyDlgTempMeterTab));

		/// <summary>
		/// Component entity that has a list of 'measurement-correction' pairs
		/// to be updated in the database on OK.
		/// </summary>
		Component meterEntity;
		public Component MeterEntity
		{
			get { return meterEntity; }
			set { meterEntity = value; }
		}

        /// <summary>
        /// Balance configuration (with buoyancy parameters)
        /// </summary>
        public Rig.GenericDevices.ICalibInfoCfg CalibInfoCfg;

		/// <summary>
		/// A list of 'measurement-correction' pairs to be deleted from the database on OK.
		/// </summary>
		public IList<MeasurementCorrection> ToBeRemoved
		{
			get { return toBeRemoved; }
			set { toBeRemoved = value; }
		}
		IList<MeasurementCorrection> toBeRemoved;

		MetrologyDlg parent;
		bool unlocked;
		Control measurementTextBox;
		Control correctionTextBox;
        Control errorTextBox;

		public MetrologyDlgTempMeterTab()
		{
			InitializeComponent();
            calibDateTimePicker.CustomFormat = Constants.DateFormat;
            calibDateTimePicker.MinDate = Constants.MinDate;
            calibExpirationDateTimePicker.CustomFormat = Constants.DateFormat;
            calibExpirationDateTimePicker.MinDate = Constants.MinDate;
            toBeRemoved = new List<MeasurementCorrection>();
            unlocked = false;
        }

		private void MetrologyDlgTempMeterTab_Load(object sender, System.EventArgs e)
		{
			if (meterEntity == null) return;

			parent = ParentForm as MetrologyDlg;

            Localize();

			/// Panel1
			cmpntNameLabel.Text = meterEntity.Name;

			/// Panel2
            this.Controls.Add(measurementTextBox = new TextBox());
            this.Controls.Add(correctionTextBox = new TextBox());
            this.Controls.Add(errorTextBox = new TextBox());

            listViewEx.SubItemClicked += new SubItemEventHandler(listViewEx_SubItemClicked);
            listViewEx.SubItemEndEditing += new SubItemEndEditingEventHandler(listViewEx_SubItemEndEditing);

			listViewEx.Columns.Add(new ColumnHeader() { Text = Strings.Nr, Width = 40 });
			listViewEx.Columns.Add(new ColumnHeader() { Text = string.Format("{0} [°C]", Strings.Temperature), Width = 120 });
			listViewEx.Columns.Add(new ColumnHeader() { Text = string.Format("{0} [1/1000 °C]", Strings.Correction), Width = 150 });
            listViewEx.Columns.Add(new ColumnHeader() { Text = string.Format("{0} [%]", Strings.Error), Width = 100 });

			RefreshAll();
		}

        void Localize()
        {
            componentLabel.Text = Strings.Component;
            testGroupBox.Text = Strings.Test_measured_corrected;
            measuredLabel.Text = Strings.Measured;
            correctedLabel.Text = Strings.Corrected;
            measuredTextBox.Text = string.Empty;
            correctedTextBox.Text = string.Empty;

            calibrationGroupBox.Text = Strings.Calibration;
            calibCertificateNrLabel.Text = Strings.Certificate;
            calibDateLabel.Text = Strings.Date;
            calibValidDateLabel.Text = Strings.Valid_until;
        }

		void RefreshAll()
		{
            if (CalibInfoCfg != null)
            {
                calibCertificateNrTextBox.Text = CalibInfoCfg.CalibCertificateNr;
                calibDateTimePicker.Value = (CalibInfoCfg.CalibDate < Constants.MinDate) ? Constants.MinDate : CalibInfoCfg.CalibDate;
                calibExpirationDateTimePicker.Value = (CalibInfoCfg.CalibValidDate < Constants.MinDate) ? Constants.MinDate : CalibInfoCfg.CalibValidDate;
            }

            listViewEx.Items.Clear();
			foreach (var corr in MeterEntity.Corrections) AddOneLVI(corr);
		}

		void AddOneLVI(MeasurementCorrection corr)
		{
			int nr = listViewEx.Items.Count + 1;
			ListViewItem lvi = new ListViewItem(nr.ToString());
            lvi.Tag = corr;
			lvi.SubItems.Add(corr.Measurement.ToString());
			lvi.SubItems.Add((1000 * corr.Correction).ToString());

            if (corr.Measurement == 0)
            {
                lvi.SubItems.Add(Strings.NaN);
            }
            else
            {
                double error = Config.Formulas.ErrorFromVolumes(corr.Measurement, corr.Measurement + corr.Correction);
                lvi.SubItems.Add(error.ToString(Config.Utils.SignificantDigitsToFmt(error, 5)));
            }

			listViewEx.Items.Add(lvi);
		}

        void listViewEx_SubItemClicked(object sender, SubItemEventArgs e)
		{
			if (unlocked && e.SubItem == 1)
			{
				listViewEx.StartEditing(measurementTextBox, e.Item, e.SubItem);
			}
			else if (unlocked && e.SubItem == 2)
			{
				listViewEx.StartEditing(correctionTextBox, e.Item, e.SubItem);
			}
            else if (unlocked && e.SubItem == 3)
            {
                listViewEx.StartEditing(correctionTextBox, e.Item, e.SubItem);
            }
		}

        void listViewEx_SubItemEndEditing(object sender, SubItemEndEditingEventArgs e)
		{
            if (ParseItem(e.Item, e.SubItem, e.DisplayText)) return;

            /// New value is NOK, revert the original text
			e.DisplayText = e.Item.Text;
			e.Cancel = true;
		}

        /// <summary>
        /// Parse text of a ListViewItem
        /// </summary>
        /// <returns>true = value parsed OK</returns>
        bool ParseItem(ListViewItem item, int subItem, string strValue)
        {
            double dblValue = 0;
            if (subItem == 1 && Utils.TryParseEDouble(strValue, out dblValue) && dblValue >= 0)
            {
                (item.Tag as MeasurementCorrection).Measurement = (float)dblValue;

                /// Update error (if possible)
                double correction1000;
                if (Utils.TryParseEDouble(item.SubItems[2].Text, out correction1000) && (dblValue != 0))
                {
                    double correction = correction1000 / 1000;
                    double error = Config.Formulas.ErrorFromVolumes(dblValue, dblValue + correction);
                    item.SubItems[3].Text = error.ToString(Config.Utils.SignificantDigitsToFmt(error, 5));
                }
                else
                {
                    item.SubItems[3].Text = Strings.NaN;
                }

                return true;
            }
            else if (subItem == 2 && Utils.TryParseEDouble(strValue, out dblValue))
            {
                double correctionInDefaultUnits = dblValue / 1000;
                (item.Tag as MeasurementCorrection).Correction = (float)correctionInDefaultUnits;

                /// Update error (if possible)
                double measurement;
                if (Utils.TryParseEDouble(item.SubItems[1].Text, out measurement) && (measurement != 0))
                {
                    double error = Config.Formulas.ErrorFromVolumes(measurement, measurement + correctionInDefaultUnits);
                    item.SubItems[3].Text = error.ToString(Config.Utils.SignificantDigitsToFmt(error, 5));
                }
                else
                {
                    item.SubItems[3].Text = Strings.NaN;
                }
                
                return true;
            }
            else if (subItem == 3 && ((strValue == Strings.NaN) || Utils.TryParseEDouble(strValue, out dblValue)))
            {
                if (strValue == Strings.NaN)
                {
                }
                else
                {
                    double measurement;
                    if (Utils.TryParseEDouble(item.SubItems[1].Text, out measurement) && measurement != 0)
                    {
                        double correction = Config.Formulas.CorrectionFromError(measurement, dblValue);
                        double correction1000 = 1000 * correction;
                        item.SubItems[2].Text = correction1000.ToString(Config.Utils.SignificantDigitsToFmt(correction1000, 5));
                        (item.Tag as MeasurementCorrection).Correction = (float)correction;
                    }
                }

                return true;
            }
            else
            {
                return false;
            }
        }

		public void Unlock()
		{
			unlocked = true;

            calibCertificateNrTextBox.Enabled = true;
            calibDateTimePicker.Enabled = true;
            calibExpirationDateTimePicker.Enabled = true;

            if (listViewEx.SelectedItems.Count == 1)
            {
                int ix = listViewEx.SelectedIndices[0];
                listViewEx.Focus();
                listViewEx.Items[ix].Selected = true;
                listViewEx.Items[ix].EnsureVisible();
            }
        }

		public void OkBtnClicked()
		{
            if (CalibInfoCfg != null)
            {
                try
                {
                    CalibInfoCfg.CalibCertificateNr = calibCertificateNrTextBox.Text;
                    CalibInfoCfg.CalibDate = calibDateTimePicker.Value.Date;
                    CalibInfoCfg.CalibValidDate = calibExpirationDateTimePicker.Value.Date;

                    Component modified = CalibInfoCfg.CreateDbEntity();
                    MeterEntity.Parameters = modified.Parameters;
                }
                catch
                {
                    MessageBox.Show(Strings.Invalid_calib_info_Correct_pls,
                                    Strings.Error,
                                    MessageBoxButtons.OK,
                                    MessageBoxIcon.Exclamation);
                }
            }
        }

		public void CancelBtnClicked()
		{
		}

		public void AddOne()
		{
			MeasurementCorrection corr = new MeasurementCorrection();
			MeterEntity.Corrections.Add(corr);
			AddOneLVI(corr);

            listViewEx.Focus();
            listViewEx.SelectedItems.Clear();
            listViewEx.Items[listViewEx.Items.Count - 1].Selected = true;
            listViewEx.Items[listViewEx.Items.Count - 1].EnsureVisible();
        }

		public void RemoveSelected()
		{
            if (listViewEx.SelectedItems.Count != 1) return;

            int removeItemNr = listViewEx.SelectedIndices[0];

            MeasurementCorrection selected =
                (MeasurementCorrection)listViewEx.SelectedItems[0].Tag;
            if (selected.Id != 0) toBeRemoved.Add(selected);
            MeterEntity.Corrections.RemoveAt(removeItemNr);
            RefreshAll();

            if (removeItemNr < listViewEx.Items.Count)
            {
                listViewEx.Focus();
                listViewEx.Items[removeItemNr].Selected = true;
                listViewEx.Items[removeItemNr].EnsureVisible();
            }
            else
            {
                parent.UpdateButtonStates(SharedButtons.SelectedItemPos.None);
            }
        }

		public void MoveUpSelected()
		{
		}

		public void MoveDownSelected()
		{
		}

		/// <summary>
		/// Event handler that indicates the selected item position
		/// and updates 'Remove', 'Up' and 'Down' buttons in the parent dialog.
		/// </summary>
		private void listViewEx_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (listViewEx.SelectedItems.Count != 1)
			{
				parent.UpdateButtonStates(SharedButtons.SelectedItemPos.None);
			}
			else if (listViewEx.Items.Count == 1)
			{
				parent.UpdateButtonStates(SharedButtons.SelectedItemPos.FirstAndLast);
			}
			else if (listViewEx.SelectedIndices[0] == 0)
			{
				parent.UpdateButtonStates(SharedButtons.SelectedItemPos.First);
			}
			else if (listViewEx.SelectedIndices[0] == (listViewEx.Items.Count - 1))
			{
				parent.UpdateButtonStates(SharedButtons.SelectedItemPos.Last);
			}
			else
			{
				parent.UpdateButtonStates(SharedButtons.SelectedItemPos.Middle);
			}
		}

		private void measuredTextBox_TextChanged(object sender, EventArgs e)
		{
			float measured;
			if (float.TryParse(measuredTextBox.Text,
							   NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign | NumberStyles.AllowExponent,
							   CultureInfo.CurrentCulture,
							   out measured) ||
				float.TryParse(measuredTextBox.Text,
							   NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign | NumberStyles.AllowExponent,
							   CultureInfo.InvariantCulture,
							   out measured))
			{
				double corrected = MeasurementCorrection.CorrectedValue(measured, meterEntity.Corrections);
				correctedTextBox.Text = corrected.ToString();
			}
		}

		public string GetWarningsBeforeSaving(ref Dictionary<string, string> renmInfo)
		{
			return string.Empty;
		}

		public void UpdateRelatedItems(Dictionary<string, string> renameInfo)
        {
        }

        public void SaveEntityToDB(NHibernate.ISession session)
        {
            session.SaveOrUpdate(MeterEntity);
        }
    }
}