using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using log4net;
using TBF.Resources;
using TBF.UiBridge;

namespace TBF.Screens
{
    public partial class ResultsTabPageCtrl : UserControl
    {
		static readonly ILog log = LogManager.GetLogger(typeof(ResultsTabPageCtrl));

		public TBF.Forms.ResultsConfig.Meters MetersArrangement;
		public TBF.Forms.ResultsConfig.TestsAre TestsArrangement;

		public IList<TBF.Forms.ResultItemSpec> RsltItems_Screen_SingleWM;
		public IList<TBF.Forms.ResultItemSpec> RsltItems_Screen_CombinedWM;
		public IList<TBF.Forms.ResultItemSpec> RsltItems_Printer_SingleWM;
		public IList<TBF.Forms.ResultItemSpec> RsltItems_Printer_CombinedWM;

		IList<Entities.Test> tests;
		IList<Entities.TestResult> testResults;

		int lvWidth;
		int lvHeight;

		/// <summary>
		/// Constructor
		/// </summary>
		public ResultsTabPageCtrl()
        {
            InitializeComponent();

			Bridge.ProcedureSelectedHandler += delegate(object sender, ProcedureSelectedEventArgs args)
			{
                if (InvokeRequired)
                {
    				Invoke(new EventHandler<ProcedureSelectedEventArgs>(OnProcedureSelected), sender, args);
                }
                else OnProcedureSelected(sender, args);
            };
			Bridge.TestCompletedHandler += delegate(object sender, TestCompletedEventArgs args)
			{
                if (InvokeRequired)
                {
                    Invoke(new EventHandler<TestCompletedEventArgs>(OnTestCompleted), sender, args);
                }
                else OnTestCompleted(sender, args);
			};
		}

		private void ResultsTabPageCtrl_Load(object sender, EventArgs e)
		{
			// Localization
			configureButton.Text = Strings.Configure;
			clearResultsButton.Text = Strings.Clear_results;

			MetersArrangement = Program.LocalSettings.ResultsConfigMeters;
			TestsArrangement = Program.LocalSettings.ResultsConfigTests;
			RsltItems_Screen_SingleWM = Forms.ResultItemSpec.FromStrArray(Program.LocalSettings.RsltItems_Screen_SingleWM);
			RsltItems_Screen_CombinedWM = Forms.ResultItemSpec.FromStrArray(Program.LocalSettings.RsltItems_Screen_CombinedWM);
			RsltItems_Printer_SingleWM = Forms.ResultItemSpec.FromStrArray(Program.LocalSettings.RsltItems_Printer_SingleWM);
			RsltItems_Printer_CombinedWM = Forms.ResultItemSpec.FromStrArray(Program.LocalSettings.RsltItems_Printer_CombinedWM);

			RedrawAll();
		}

		/// <summary>
		/// Invoke a configuration dialog
		/// </summary>
		private void configureButton_Click(object sender, EventArgs e)
		{
			TBF.Forms.ResultsConfig dlg = new TBF.Forms.ResultsConfig();
			dlg.TestsArrangement = TestsArrangement;
			dlg.MetersArrangement = MetersArrangement;
			dlg.RsltItems_Screen_SingleWM = RsltItems_Screen_SingleWM;
			dlg.RsltItems_Screen_CombinedWM = RsltItems_Screen_CombinedWM;
			dlg.RsltItems_Printer_SingleWM = RsltItems_Printer_SingleWM;
			dlg.RsltItems_Printer_CombinedWM = RsltItems_Printer_CombinedWM;
			if (DialogResult.OK == dlg.ShowDialog())
			{
				MetersArrangement = dlg.MetersArrangement;
				TestsArrangement = dlg.TestsArrangement;
				RsltItems_Screen_SingleWM = dlg.RsltItems_Screen_SingleWM;
				RsltItems_Screen_CombinedWM = dlg.RsltItems_Screen_CombinedWM;
				RsltItems_Printer_SingleWM = dlg.RsltItems_Printer_SingleWM;
				RsltItems_Printer_CombinedWM = dlg.RsltItems_Printer_CombinedWM;

				Program.LocalSettings.ResultsConfigMeters = MetersArrangement;
				Program.LocalSettings.ResultsConfigTests = TestsArrangement;
				Program.LocalSettings.RsltItems_Screen_SingleWM   = Forms.ResultItemSpec.ToStrArray(RsltItems_Screen_SingleWM);
				Program.LocalSettings.RsltItems_Screen_CombinedWM = Forms.ResultItemSpec.ToStrArray(RsltItems_Screen_CombinedWM);
				Program.LocalSettings.RsltItems_Printer_SingleWM = Forms.ResultItemSpec.ToStrArray(RsltItems_Printer_SingleWM);
				Program.LocalSettings.RsltItems_Printer_CombinedWM = Forms.ResultItemSpec.ToStrArray(RsltItems_Printer_CombinedWM);
				Program.LocalSettings.Save();
			}
			RedrawAll();
		}

		/// <summary>
		/// Clear the results
		/// </summary>
		private void clearResultsButton_Click(object sender, EventArgs e)
		{
		}

		#region Redraw

		/// <summary>
		/// Re-draw the results. Apply new settings if they changed.
		/// </summary>
		void RedrawAll()
		{
			this.SuspendLayout();
			lvWidth = flowLayoutPanel.Width - 10;
			lvHeight = flowLayoutPanel.Height - 10;

			if (MetersArrangement == Forms.ResultsConfig.Meters.Horizontally)
			{
				flowLayoutPanel.FlowDirection = FlowDirection.LeftToRight;
				lvWidth = (lvWidth + 5) / Program.WMsCount - 5;
			}
			else
			{
				flowLayoutPanel.FlowDirection = FlowDirection.TopDown;
				lvHeight = (lvHeight + 5) / Program.WMsCount - 5;
			}
			flowLayoutPanel.Controls.Clear();
			flowLayoutPanel.WrapContents = false;
			flowLayoutPanel.AutoScroll = true;

            ///
            /// Determine whether combined meter results are displayed
            ///
            bool combined = ((testResults != null) &&
                             (testResults.Count > 0) &&
                             (testResults[0].MetersKind == Entities.MetersKind.Combined));

            for (int mtr = 0; mtr < (combined ? Program.WMsCount / 2 : Program.WMsCount); mtr++)
			{
				if (TestsArrangement == Forms.ResultsConfig.TestsAre.Rows)
				{
					ListView lview = GetResultsTestsAreRows(mtr, combined);
					if (lview != null) flowLayoutPanel.Controls.Add(lview);
				}
				else
				{
					ListView lview = GetResultsTestsAreColumns(mtr, combined);
					if (lview != null) flowLayoutPanel.Controls.Add(lview);
				}
			}
			this.ResumeLayout(false);
		}

		/// <summary>
		/// Get an empty ListView control with appropriate parameters.
		/// </summary>
		/// <returns>ListView control</returns>
		ListView GetListView()
		{
			ListView lview = new ListView();
			lview.AllowColumnReorder = false;
			lview.Dock = System.Windows.Forms.DockStyle.None;
			lview.FullRowSelect = true;
			lview.GridLines = true;
			lview.Location = new System.Drawing.Point(0, 0);
			lview.Size = new System.Drawing.Size(lvWidth, lvHeight);
			lview.TabIndex = 0;
			lview.UseCompatibleStateImageBehavior = false;
			lview.View = System.Windows.Forms.View.Details;
			return lview;
		}

		/// <summary>
		/// Pre-fetch the test results corresponding to the columns or rows in the ListView
		/// </summary>
		/// <returns>Ordered list of test results containing null-s for missing results</returns>
		IList<Entities.TestResult> GetCurrentTestResults()
		{
			IList<Entities.TestResult> rslts = new List<Entities.TestResult>();

			foreach (var test in tests)
			{
				for (int rpt = 1; rpt <= test.Repeats; rpt++)
				{
					bool added = false;
					if (testResults != null)
					{
						foreach (var testRslt in testResults)
						{
							if ((testRslt.TestId == test.Id) && (testRslt.RepetitionNr == rpt) && !testRslt.DoNotPublish)
							{
								rslts.Add(testRslt);
								added = true;
								break;
							}
						}
					}
					if (!added) rslts.Add(null);
				}
			}
			return rslts;
		}

		IList<string> GetAllDecoratedTestNames()
		{
			IList<string> rslt = new List<string>();
			foreach (var test in tests)
			{
				if (test.Repeats == 1)
				{
					rslt.Add(test.Name);
					continue;
				}
				for (int rpt = 1; rpt <= test.Repeats; rpt++)
				{
					rslt.Add(test.Name + string.Format(" ({0}/{1})", rpt, test.Repeats));
				}
			}
			return rslt;
		}

		/// <summary>
		/// Get a ListView control filled with results of the meter 'mtr'
		/// </summary>
		/// <param name="mtr">Water meter number: 0..Program.WMsCount</param>
		/// <returns>ListView object</returns>
		ListView GetResultsTestsAreRows(int mtr, bool combined)
		{
			IList<Forms.ResultItemSpec> items = (combined ? RsltItems_Screen_CombinedWM : RsltItems_Screen_SingleWM);
			if (tests == null || items == null) return null;

			ListView lview = GetListView();

			// Header
			lview.Columns.Add((mtr + 1).ToString());
			foreach (var item in items) lview.Columns.Add(item.ClmnHeaderText);

			IList<string> testNames = GetAllDecoratedTestNames();
			int ix = 0;
			foreach (var testRslt in GetCurrentTestResults())
			{
				ListViewItem lvi = new ListViewItem(testNames[ix++]);
				if (testRslt != null)
				{
					foreach (var item in items)
					{
						string str;
						if (combined)
						{
							str = (item.PrintCombined == null) ? string.Empty : item.PrintCombined(testRslt.Meters[2 * mtr],
																										  testRslt.Meters[2 * mtr + 1],
																										  testRslt.CombinedMeters[mtr]);
						}
						else
						{
							str = (item.Print == null) ? string.Empty : item.Print(testRslt.Meters[mtr]);
						}

						string[] texts = str.Split(new char[] { '|' });
						if (texts.Length == 1)
						{
							lvi.SubItems.Add(str);
						}
						else if (texts.Length == 2)
						{
							Color color = texts[1].Equals("Green") ? Color.Green : (texts[1].Equals("Red") ? Color.Red : Color.White);
							lvi.UseItemStyleForSubItems = false;
							lvi.SubItems.Add(texts[0]);
							lvi.SubItems[lvi.SubItems.Count - 1].BackColor = color;
						}
						else
						{
							lvi.SubItems.Add(string.Empty);
						}
					}
				}
				lview.Items.Add(lvi);
			}

			return lview;
		}

		/// <summary>
		/// Get a ListView control filled with results of the meter 'mtr'
		/// </summary>
		/// <param name="mtr">Water meter number: 0..Program.WMsCount</param>
		/// <returns>ListView object</returns>
		ListView GetResultsTestsAreColumns(int mtr, bool combined)
		{
			IList<Forms.ResultItemSpec> items = (combined ? RsltItems_Screen_CombinedWM : RsltItems_Screen_SingleWM);
			if (tests == null || items == null) return null;

			ListView lview = GetListView();

			// Header
			lview.Columns.Add((mtr + 1).ToString());
			foreach (var str in GetAllDecoratedTestNames()) lview.Columns.Add(str);

			IList<Entities.TestResult> trs = GetCurrentTestResults();

			foreach (var item in items)
			{
				ListViewItem lvi = new ListViewItem(item.ClmnHeaderText);
				if (combined)
				{
					foreach (var tr in trs)
					{
						string str = (item.PrintCombined == null || tr == null) ? string.Empty : item.PrintCombined(tr.Meters[2 * mtr],
																														tr.Meters[2 * mtr + 1],
																														tr.CombinedMeters[mtr]);
						string[] texts = str.Split(new char[] { '|' });
						if (texts.Length == 1)
						{
							lvi.SubItems.Add(str);
						}
						else if (texts.Length == 2)
						{
							Color color = texts[1].Equals("Green") ? Color.Green : (texts[1].Equals("Red") ? Color.Red : Color.White);
							lvi.UseItemStyleForSubItems = false;
							lvi.SubItems.Add(texts[0]);
							lvi.SubItems[lvi.SubItems.Count - 1].BackColor = color;
						}
						else
						{
							lvi.SubItems.Add(string.Empty);
						}
					}
				}
				else
				{
					foreach (var tr in trs)
					{
						string str = (item.Print == null || tr == null) ? string.Empty : item.Print(tr.Meters[mtr]);

						string[] texts = str.Split(new char[] { '|' });
						if (texts.Length == 1)
						{
							lvi.SubItems.Add(str);
						}
						else if (texts.Length == 2)
						{
							Color color = texts[1].Equals("Green") ? Color.Green : (texts[1].Equals("Red") ? Color.Red : Color.White);
							lvi.UseItemStyleForSubItems = false;
							lvi.SubItems.Add(texts[0]);
							lvi.SubItems[lvi.SubItems.Count - 1].BackColor = color;
						}
						else
						{
							lvi.SubItems.Add(string.Empty);
						}
					}
				}
				lview.Items.Add(lvi);
			}

			return lview;
		}

		#endregion

		void OnProcedureSelected(object sender, ProcedureSelectedEventArgs args)
		{
			tests = args.Procedure.Tests;
			testResults = new List<Entities.TestResult>();
			RedrawAll();
		}

		void OnTestCompleted(object sender, TestCompletedEventArgs args)
		{
			if (args.TestResult != null)
			{
				/// Delete an existing testResults with the same test name and repetition number
				try
				{
					Entities.TestResult tr = testResults
						.First<Entities.TestResult>(x => (x.TestId == args.TestResult.TestId) &&
                                                         (x.RepetitionNr == args.TestResult.RepetitionNr));
					testResults.Remove(tr);
				}
				catch { };

				/// Add the new test results
				testResults.Add(args.TestResult);
				RedrawAll();
			}
		}
	}
}