///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Threading;
using Results.Output.Printers.Enhanced;
using log4net;

namespace TBF.BenchControl.Output.Printers.Enhanced
{
	public class Printer : ComponentBase, IOperation, GenericDevices.IResultsPrinter
	{
		private static readonly ILog log = LogManager.GetLogger(typeof(Printer));
		public override string ToString() { return string.Format("ResultsPrinters.Basic({0})", Cfg.ToString(1)); }

		readonly PrinterCfg printerCfg;

		public bool SupressPrinting { get { return printerCfg.SupressPrinting; } }

		///
		/// Items to print
		///
		string header;
		IList<Results.WMeterRsltItemSpec> commonItems;
		IList<Results.WMeterRsltItemSpec> testItems;
		string footer;


		Thread thread;		    /// Thread where results are printed
		bool completed;         /// Set to 'true' by the thread when printing results is completed
		bool abort;             /// Set to 'true' by Stop() operation to abort printing results


		public Printer() { }


		public Printer(Generic.IComponentCfg cfg)
			: base(cfg)
		{
			printerCfg = cfg as PrinterCfg;
			ApplyConfig();
			log.Debug(this.ToString());
		}


		void ApplyConfig()
		{
			header = string.IsNullOrEmpty(printerCfg.Header) ? string.Empty : printerCfg.Header.Replace("~", Environment.NewLine);
			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.CommonItems);
			testItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.SelectedItems);	/// TestID info will be overwritten later on
			footer = string.IsNullOrEmpty(printerCfg.Footer) ? string.Empty : printerCfg.Footer.Replace("~", Environment.NewLine);
		}


		#region Configuration Change Handling

		public static void OnCfgChange(object sender, CfgChangeArgs args)
		{
			if (CfgChangeHandler == null) return;
			try { CfgChangeHandler(sender, args); }
			catch (Exception e) { log.Error("CfgChangeHandler(...) failed", e); }
		}

		public static event EventHandler<CfgChangeArgs> CfgChangeHandler;

		public override void StartChangeHandler()
		{
			CfgChangeHandler += delegate(object sender, CfgChangeArgs args)
			{
				PrinterCfg newCfg = args.Cfg as PrinterCfg;
				if (newCfg != null && newCfg.Name.Equals(Name))
				{
					if (args.Command == CfgChangeCmd.CfgChange)
					{
						printerCfg.PageOrientation = newCfg.PageOrientation;
						printerCfg.TopMargin = newCfg.TopMargin;
						printerCfg.BottomMargin = newCfg.BottomMargin;
						printerCfg.LeftMargin = newCfg.LeftMargin;

						printerCfg.TitFntFml = newCfg.TitFntFml;
						printerCfg.TitFntSz  = newCfg.TitFntSz;
						printerCfg.TitFntSty = newCfg.TitFntSty;
						printerCfg.HdrFntFml = newCfg.HdrFntFml;
						printerCfg.HdrFntSz  = newCfg.HdrFntSz;
						printerCfg.HdrFntSty = newCfg.HdrFntSty;
						printerCfg.BodyFntFml = newCfg.BodyFntFml;
						printerCfg.BodyFntSz  = newCfg.BodyFntSz;
						printerCfg.BodyFntSty = newCfg.BodyFntSty;

						printerCfg.SupressPrinting = newCfg.SupressPrinting;
						printerCfg.Culture = newCfg.Culture;
						printerCfg.CommonItems = newCfg.CommonItems;
						printerCfg.SelectedItems = newCfg.SelectedItems;
						printerCfg.Header = newCfg.Header;
						printerCfg.Footer = newCfg.Footer;

						ApplyConfig();
					}
				}
			};
		}

		#endregion Configuration Change Handling


		/// <summary>
		/// Prints the test cycle results, Events:  Event.ResultsPrinted
		/// </summary>
		/// <param name="batch">Batch results to print</param>
		/// <returns>Reference to the operation</returns>
		public IOperation PrintResultsOp(Results.Entities.Batch batch)
		{
			thread = new Thread(() =>
			{
				PrintResults(batch);
				completed = true;
			});

			thread.CurrentCulture = Thread.CurrentThread.CurrentCulture;
			thread.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;

			if (printerCfg.Culture > Culture.system && printerCfg.Culture < Culture.Count)
			{
				thread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
			}

			return this;
		}

		/// <summary>Start this operation</summary>
		public void Start()
		{
			completed = false;
			abort = false;
			thread.Start();
		}

		/// <summary>Run this operation</summary>
		/// <returns>Event.ResultsPrinted</returns>
		public Event Run()
		{
			if (completed)
				return Event.ResultsPrinted;
			else
				return Event.Busy;
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
			if (!completed) abort = true;
		}


		void PrintResults(Results.Entities.Batch batch)
		{
			CultureInfo culture = Thread.CurrentThread.CurrentCulture;
			try { culture = new System.Globalization.CultureInfo(printerCfg.Culture.ToString()); }
			catch { }

			if (batch.WaterMeters.Count > 0)
			{
				EnhancedPrinterCfg cfg = new EnhancedPrinterCfg {
					PageOrientation = printerCfg.PageOrientation,
					TopMargin = printerCfg.TopMargin,
					BottomMargin = printerCfg.BottomMargin,
					LeftMargin = printerCfg.LeftMargin,
					TitFntFml = printerCfg.TitFntFml,
					HdrFntFml = printerCfg.HdrFntFml,
					BodyFntFml = printerCfg.BodyFntFml,
					TitFntSz = printerCfg.TitFntSz,
					HdrFntSz = printerCfg.HdrFntSz,
					BodyFntSz = printerCfg.BodyFntSz,
					TitFntSty = printerCfg.TitFntSty,
					HdrFntSty = printerCfg.HdrFntSty,
					BodyFntSty = printerCfg.BodyFntSty,
					SupressPrinting = printerCfg.SupressPrinting,
					CultureInfo = culture,
					Header = printerCfg.Header,
					CommonItems = printerCfg.CommonItems,
					TestItems = printerCfg.SelectedItems,
					Footer = printerCfg.Footer,
				};

				new Results.Output.Printers.Enhanced.EnhancedPrintDocument(batch, cfg).Print();
			}
		}
	}
}