///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Windows.Forms;
using log4net;
using Config.Entities;
using TBF.Resources;

namespace TBF.UiControls
{
	public partial class MetrologyDlgPressMeterTab : UserControl, IMetrologyDlgTab
	{
		static readonly ILog log = LogManager.GetLogger(typeof(MetrologyDlgPressMeterTab));

		/// <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>
		/// 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;

		public MetrologyDlgPressMeterTab()
		{
			InitializeComponent();
			toBeRemoved = new List<MeasurementCorrection>();
		}

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

			parent = ParentForm as MetrologyDlg;

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

			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;

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

			listViewEx.SubItemClicked += new Results.Forms.SubItemEventHandler(listViewEx_SubItemClicked);
			listViewEx.SubItemRightClicked += new Results.Forms.SubItemEventHandler(listViewEx_SubItemRightClicked);
			listViewEx.SubItemEndEditing += new Results.Forms.SubItemEndEditingEventHandler(listViewEx_SubItemEndEditing);

			listViewEx.Columns.Add(new ColumnHeader() { Text = Strings.Nr, Width = 60 });
			listViewEx.Columns.Add(new ColumnHeader() { Text = string.Format("{0} [bar]", Strings.Pressure), Width = 100 });
			listViewEx.Columns.Add(new ColumnHeader() { Text = string.Format("{0} [mbar]", Strings.Correction), Width = 100 });

			RefreshAll();
		}

		void RefreshAll()
		{
			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.SubItems.Add(corr.Measurement.ToString());
			lvi.SubItems.Add((corr.Correction * 1000.0f).ToString());
			lvi.Tag = corr;
			listViewEx.Items.Add(lvi);
		}

		void listViewEx_SubItemClicked(object sender, Results.Forms.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);
			}
		}

		void listViewEx_SubItemRightClicked(object sender, Results.Forms.SubItemEventArgs e)
        {
            if (!unlocked || e.SubItem < 1 || e.SubItem > 2) return;

            if (DialogResult.Yes == MessageBox.Show(Strings.Do_you_want_to_copy_this_value_to_all_cells_below_this_cell,
                                                    Strings.Confirmation, MessageBoxButtons.YesNo, MessageBoxIcon.Question))
            {
                int columnNr = e.SubItem;
                string value = null;
                System.Drawing.Color backColor = System.Drawing.Color.White;

                foreach (ListViewItem item in listViewEx.Items)
                {
                    if (value != null && item.SubItems.Count > columnNr)
                    {
                        item.SubItems[columnNr].Text = value;
                        item.SubItems[columnNr].BackColor = backColor;
                        ParseItem(item, columnNr, value);
                    }
                    else if (item == e.Item)
                    {
                        value = item.SubItems[columnNr].Text;
                        backColor = item.SubItems[columnNr].BackColor;
                    }
                }
            }
        }

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

            /// New value 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 value)
        {
            float fvalue;
            if (subItem == 1 && Utils.TryParseEFloat(value, out fvalue) && fvalue >= 0)
            {
                (item.Tag as MeasurementCorrection).Measurement = fvalue;
                return true;
            }
            else if (subItem == 2 && Utils.TryParseEFloat(value, out fvalue))
            {
                (item.Tag as MeasurementCorrection).Correction = fvalue / 1000.0f;
                return true;
            }
            else
            {
                return false;
            }
        }

		public void Unlock()
		{
			unlocked = 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()
		{
		}

		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 = Config.Formulas.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)
        {
        }
    }
}