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

#pragma warning disable 162     /// Disables 'Unreachable code detected' warning

namespace TBF.BenchControl.DataEntry.Combined
{
	public partial class CycleBeginningForm : Form, GenericDevices.IHasCompleted
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(CycleBeginningForm));

		/// <summary> Number of water meters </summary>
		public readonly int WaterMetersCount;

		// To be retrieved after the form closes
		public string PurchaseOrder;
		public string[] MainSNText;
		public string[] AuxSNText;
		public bool[] Disabled;

		// Set to 'true' when the form closes
        public bool Completed { get { return completed; } }
		bool completed;

		/// <summary> Number of text boxes for serial numbers </summary>
		int TextBoxesCount;
		Label[] mainLabels;
		Label[] auxLabels;
		ComboBox[] mainComboBoxes;
		ComboBox[] auxComboBoxes;
		CheckBox[] checkBoxes;
		IList<ComboBox> enabledComboBoxes;


		public CycleBeginningForm()
        {
            InitializeComponent();
			ControlBox = false;

			TextBoxesCount = 3;
			mainLabels = new Label[] { mainSN1Label,  mainSN2Label,  mainSN3Label };
			auxLabels = new Label[] { auxSN1Label, auxSN2Label, auxSN3Label };
			mainComboBoxes = new ComboBox[] { main1ComboBox,  main2ComboBox,  main3ComboBox };
			auxComboBoxes = new ComboBox[] { aux1ComboBox, aux2ComboBox, aux3ComboBox };
			checkBoxes = new CheckBox[] { checkBox1,  checkBox2,  checkBox3 };
			enabledComboBoxes = new List<ComboBox>();

			this.WaterMetersCount = Config.Data.CompoundWMsCount;		/// Default number of compound water meters

			completed = false;
			StartForceCloseHandler();
		}

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="compoundWaterMetersCount">Number of text boxes for serial numbers</param>
		public CycleBeginningForm(int compoundWaterMetersCount)
			: this()
		{
			this.WaterMetersCount = compoundWaterMetersCount;	/// = Program.CompondWMsCount
			MainSNText = new string[compoundWaterMetersCount];
			AuxSNText = new string[compoundWaterMetersCount];
			Disabled = new bool[compoundWaterMetersCount];

			ShuffleTextBoxes(compoundWaterMetersCount);

			Height = 110 + WaterMetersCount * 157;
		}

		/// <summary>
		/// Make sure the layout of labels/text boxes on the screen
		/// corresponds to the layout of watermeters of the test bench.
		/// </summary>
		/// <param name="compoundWMsCount">Numebr of combined watermeters</param>
		void ShuffleTextBoxes(int compoundWMsCount)
		{
			if (compoundWMsCount < TextBoxesCount) TextBoxesCount = compoundWMsCount;
		}

		private void CycleBeginningForm_Load(object sender, EventArgs e)
		{
			Localize();

			PrepareOrderCombo(orderComboBox);

			if (WaterMetersCount >= 1) groupBox1.Visible = true;
			if (WaterMetersCount >= 2) groupBox2.Visible = true;
			if (WaterMetersCount >= 3) groupBox3.Visible = true;

			for (int i = 0; i < TextBoxesCount; i++)
			{
				mainLabels[i].Visible = mainComboBoxes[i].Visible = true;
				auxLabels[i].Visible = auxComboBoxes[i].Visible = true;
				checkBoxes[i].Visible = true;
				enabledComboBoxes.Add(mainComboBoxes[i]);
				enabledComboBoxes.Add(auxComboBoxes[i]);

				if (Program.LocalSettings.LastMainSNTextsCount == TextBoxesCount &&
					Program.LocalSettings.LastAuxSNTextsCount == TextBoxesCount)
				{
					mainComboBoxes[i].Items.Add(Program.LocalSettings.LastMainSNTexts[i]);
					auxComboBoxes[i].Items.Add(Program.LocalSettings.LastAuxSNTexts[i]);
				}
			}
		}

		void Localize()
		{
			Text = Strings.Data;
			orderGroupBox.Text = Strings.Purchase_order;
			groupBox1.Text = Strings.Water_Meter + " 1";
			groupBox2.Text = Strings.Water_Meter + " 2";
			groupBox3.Text = Strings.Water_Meter + " 3";
			mainSN1Label.Text = Strings.Main_WM_SerialNr;
			mainSN2Label.Text = Strings.Main_WM_SerialNr;
			mainSN3Label.Text = Strings.Main_WM_SerialNr;
			auxSN1Label.Text = Strings.Aux_WM_SerialNr;
			auxSN2Label.Text = Strings.Aux_WM_SerialNr;
			auxSN3Label.Text = Strings.Aux_WM_SerialNr;
			okButton.Text = Strings.OkBtnText;
			clearButton.Text = Strings.ClearBtnText;
		}

		/// <summary>
		/// Load Purchase order combo box items from the LocalSettings PurchaseOrderHistory array
		/// </summary>
		/// <param name="orderComboBox">Puchase order ComboBox</param>
		void PrepareOrderCombo(ComboBox orderComboBox)
		{
			for (int i = 0; i < Program.LocalSettings.PurchaseOrderHistoryCount; i++)
			{
				orderComboBox.Items.Add(Program.LocalSettings.PurchaseOrderHistory[i]);
			}

			if (orderComboBox.Items.Count > 0)
			{
				orderComboBox.Text = orderComboBox.Items[0].ToString();
			}
		}

        private void okButton_Click(object sender, EventArgs e)
        {
			PurchaseOrder = orderComboBox.Text;
			Program.LocalSettings.UpdateHistory(orderComboBox.Text,
												ref Program.LocalSettings.PurchaseOrderHistory
#if FUZHOU150 || FUZHOU300
												, 20
#endif
												);

			Program.LocalSettings.LastMainSNTexts = MainSNText;
			Program.LocalSettings.LastAuxSNTexts = AuxSNText;

			for (int i = 0; i < TextBoxesCount; i++)
			{
				MainSNText[i] = mainComboBoxes[i].Text;
				AuxSNText[i] = auxComboBoxes[i].Text;
				Disabled[i] = !checkBoxes[i].Checked;
			}

            completed = true;
            Close();
        }

		private void clearButton_Click(object sender, EventArgs e)
		{
			for (int i = 0; i < TextBoxesCount; i++)
			{
				mainComboBoxes[i].Text = string.Empty;
				auxComboBoxes[i].Text = string.Empty;
				checkBoxes[i].Checked = false;
			}

		}


		/// <summary>
		/// When one combo box is updated using drop-down menu, all combo boxes
		/// are updated by this function.
		/// </summary>
		private void UpdateAllCombos()
		{
			for (int i = 0; i < TextBoxesCount; i++)
			{
				mainComboBoxes[i].Text = Program.LocalSettings.LastMainSNTexts[i];
				auxComboBoxes[i].Text = Program.LocalSettings.LastAuxSNTexts[i];
				checkBoxes[i].Checked = !string.IsNullOrEmpty(mainComboBoxes[i].Text)
									  || !string.IsNullOrEmpty(auxComboBoxes[i].Text);
			}
		}


		private void main1ComboBox_TextChanged(object sender, EventArgs e) { checkBox1.Checked = true; }
		private void main1ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastMainSNTextsCount == WaterMetersCount)
			{
				if (main1ComboBox.Text.Equals(main1ComboBox.Items[0])) UpdateAllCombos();
			}
		}

		private void aux1ComboBox_TextChanged(object sender, EventArgs e) { checkBox1.Checked = true; }
		private void aux1ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastAuxSNTextsCount == WaterMetersCount)
			{
				if (aux1ComboBox.Text.Equals(aux1ComboBox.Items[0])) UpdateAllCombos();
			}
		}

		private void main2ComboBox_TextChanged(object sender, EventArgs e) { checkBox2.Checked = true; }
		private void main2ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastMainSNTextsCount == WaterMetersCount)
			{
				if (main2ComboBox.Text.Equals(main2ComboBox.Items[0])) UpdateAllCombos();
			}
		}

		private void aux2ComboBox_TextChanged(object sender, EventArgs e) { checkBox2.Checked = true; }
		private void aux2ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastAuxSNTextsCount == WaterMetersCount)
			{
				if (aux2ComboBox.Text.Equals(aux2ComboBox.Items[0])) UpdateAllCombos();
			}
		}

		private void main3ComboBox_TextChanged(object sender, EventArgs e) { checkBox3.Checked = true; }
		private void main3ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastMainSNTextsCount == WaterMetersCount)
			{
				if (main3ComboBox.Text.Equals(main3ComboBox.Items[0])) UpdateAllCombos();
			}
		}

		private void aux3ComboBox_TextChanged(object sender, EventArgs e) { checkBox3.Checked = true; }
		private void aux3ComboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (Program.LocalSettings.LastAuxSNTextsCount == WaterMetersCount)
			{
				if (aux3ComboBox.Text.Equals(aux3ComboBox.Items[0])) UpdateAllCombos();
			}
		}


		#region Forced close handling

		public void StartForceCloseHandler()
		{
			UiBridge.Bridge.CloseModelessFormHandler += delegate(object sender, EventArgs args)
			{
				if (InvokeRequired) { Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args); }
				else OnForceClose(sender, args);
			};
		}

		void OnForceClose(object sender, EventArgs args)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		#endregion


		/// <summary>
		/// Process a key press within any enabled text boxe
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		/// <param name="currentFocusOwner">TextBox control which received the event</param>
		private void ProcKeyPress(object sender, KeyPressEventArgs e, ComboBox currentFocusOwner)
		{
			if (e.KeyChar == '+')
			{
				/// Process '+' key ..... Form completed
				okButton_Click(sender, e);
			}
			if (e.KeyChar == '\r')
			{
				/// Process <enter> key ..... Next text field
				if (enabledComboBoxes.Count < 2) return;		/// There is just one enabled textbox

				for (int i = 0; i < enabledComboBoxes.Count; i++)
				{
					if (enabledComboBoxes[i] == currentFocusOwner)
					{
						/// Change focus to the next enabled text box
						enabledComboBoxes[(i + 1) % enabledComboBoxes.Count].Focus();
						return;
					}
				}
			}
		}

		private void main1ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, main1ComboBox); }
		private void main2ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, main2ComboBox); }
		private void main3ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, main3ComboBox); }
		private void aux1ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, aux1ComboBox); }
		private void aux2ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, aux2ComboBox); }
		private void aux3ComboBox_KeyPress(object sender, KeyPressEventArgs e) { ProcKeyPress(sender, e, aux3ComboBox); }
	}
}