using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml;
using VEPROMS.CSLA.Library;

namespace VEPROMS
{
	//C2025-024 Electronic Procedures - Phase 2 (PROMS XML output)
	//class inherits from normal import/export form
	//then adds additional functionality
	public partial class dlgExportImportEP : dlgExportImport
	{
		private readonly AnnotationTypeInfo _AnnotationType;

		private string multiseparator = ",";

		private static Regex _ROAccPageTokenPattern = new Regex("[<][^<>-]+-[^<>]+[>]");

		public dlgExportImportEP(string mode, FolderInfo folderInfo, frmVEPROMS myFrmVEPROMS, int annotationTypeId) : base(mode, folderInfo, myFrmVEPROMS, (E_UCFImportOptions) 0)
        {
			_AnnotationType = AnnotationTypeInfo.Get(annotationTypeId);
			_ExportBothConvertedandNot = true;
			DocReplace = new Dictionary<int, byte[]>();
			FormClosed += OnClose;
			Text = $"{mode} Electronic Procedure ({_AnnotationType.Name}) Dialog for {folderInfo.Name}";
		}

		public dlgExportImportEP(string mode, DocVersionInfo docVersionInfo, frmVEPROMS myFrmVEPROMS, int annotationTypeId) : base(mode, docVersionInfo, myFrmVEPROMS, (E_UCFImportOptions)0)
		{
			_AnnotationType = AnnotationTypeInfo.Get(annotationTypeId);
			_ExportBothConvertedandNot = true;
			DocReplace = new Dictionary<int, byte[]>();
			FormClosed += OnClose;
			Text = $"{mode} Electronic Procedure ({_AnnotationType.Name}) Dialog for {docVersionInfo.Name} of {docVersionInfo.MyFolder.Name}";
		}
		public dlgExportImportEP(string mode, ProcedureInfo procedureInfo, frmVEPROMS myFrmVEPROMS, int annotationTypeId) : base(mode, procedureInfo, myFrmVEPROMS, (E_UCFImportOptions)0)
		{
			_AnnotationType = AnnotationTypeInfo.Get(annotationTypeId);
			_ExportBothConvertedandNot = true;
			DocReplace = new Dictionary<int, byte[]>();
			FormClosed += OnClose;
			Text = $"{mode} Electronic Procedure ({_AnnotationType.Name}) Dialog for {procedureInfo.DisplayNumber}";
		}

		//Overridden function to handle export of EP data
		protected override void ExportEPAnnotationInfo(XmlElement xe, ItemInfo ii)
		{
			//switch to handle customizations for different formats
			switch (ii.ActiveFormat.PlantFormat.EPFormatFiles.Find(x => x.AnnotationTypeID == _AnnotationType.TypeID)?.Name)
			{
				default:
					ExportEPAnnotationInfo_Default(xe, ii);
					break;
			}
		
		}

		//default export of EP Data
		private void ExportEPAnnotationInfo_Default(XmlElement xe, ItemInfo ii)
		{
			//Add tab text to item
			string steptab = Volian.Print.Library.PDFReport.BuildStepTab(ii);
			xe.Attributes.SetNamedItem(AddAttribute(xe.OwnerDocument, "StepTab", steptab));

			//get first transition in item and add it as an xml element
			if (ii.MyContent.ContentTransitionCount > 0)
			{
				TransitionInfo ct = ii.MyContent.ContentTransitions[0];
				xe.Attributes.SetNamedItem(AddAttribute(xe.OwnerDocument, "TransitionToItemID", ct.ToID.ToString()));
			}

			//export EP annotation details under an EPInfo node
			if (ii.ItemAnnotations != null)
			{
				XmlElement xepinfo = xe.OwnerDocument.CreateElement("EPInfo");

				EPFields myEPFields = ii.GetValidEPFields(_AnnotationType.TypeID);

				ROFSTLookup lookup = ii.MyDocVersion.DocVersionAssociations[0].MyROFst.GetROFSTLookup(ii.MyDocVersion);

				//For each annotation in the item that is of the current EP Annotation type
				foreach (var EPAnnotation in ii.ItemAnnotations.Where(x => x.TypeID == _AnnotationType.TypeID))
				{
					var EPAnnotationConfig = new AnnotationConfig(EPAnnotation.Config);

					XmlElement xepdetails = xe.OwnerDocument.CreateElement("Details");
					//include the annotation ID for reference
					xepdetails.Attributes.SetNamedItem(AddAttribute(xepdetails.OwnerDocument, "AnnotationID", EPAnnotation.AnnotationID.ToString()));

					//loop through each EP Field - name the xml elements the EP.name
					foreach (EPField EP in myEPFields)
					{
						string val = EPAnnotationConfig.GetValue("EP", EP.name);

						XmlElement xindivid = xe.OwnerDocument.CreateElement(EP.name);

						//need to resolve ROs ROSingle, ROMulti, in text
						//get values
						//should we export blank?
						//
						switch (EP.type.ToLower())
						{
							case "text":

								//for text, check if any embedded ROs
								//if none, set the xml element to the text
								//otherwise resolve the Ros
								MatchCollection matches = _ROAccPageTokenPattern.Matches(val);
								if (matches.Count == 0)
								{
									xindivid.InnerText = val;
								}
								else
                                {
									//resolve ROs
									//text ROs will replace the AccID key in the text
									//for binary objects like images,
									//we will keep the AccID in the text and output the binary as a separate child
									//XML element with the same xml name as the AccID
									foreach (Match m in matches)
									{
										ROFSTLookup.rochild roc = lookup.GetROChildByAccPageID(m.Groups[1].Value);


										if (roc.type == 8) // Exclude replacing Images since are binary - for those, add a sub item
										{
											XmlElement xroid = xindivid.OwnerDocument.CreateElement(m.Groups[1].Value);
											xroid.InnerText = roc.value;
											xindivid.AppendChild(xroid);
										}
										else if (!string.IsNullOrEmpty(roc.value))
										{
											bool convertCaretToDeltaSymbol = (ii.ActiveSection != null) && ii.ActiveSection.ActiveFormat.PlantFormat.FormatData.SectData.ConvertCaretToDelta;

											string rocvalue = roc.value.Replace("`", "\xB0");
											rocvalue = rocvalue.Replace("\xF8", "\xB0");
											rocvalue = rocvalue.Replace("\x7F", "\x394"); //delta
											if (convertCaretToDeltaSymbol) rocvalue = rocvalue.Replace("^", "\x394"); // delta
											val = val.Replace($"<{m.Groups[1].Value}>", rocvalue);
										}

									}

									xindivid.InnerText = val;
								}
								break;
							case "rosingle":
								//Get the output columns from the EPFormatFile
								//set the "Item" nodes value = to those resolved items
								//separated by multiseparator
								XmlElement xindivid_rosingle = xindivid.OwnerDocument.CreateElement("Item");
								xindivid_rosingle.Attributes.SetNamedItem(AddAttribute(xindivid_rosingle.OwnerDocument, "ROID", val));
								List<string> ro_single_tmp = EP.getROValuesList(EPAnnotation, val);
								xindivid_rosingle.InnerText = String.Join(multiseparator, ro_single_tmp.ToArray());
								xindivid.AppendChild(xindivid_rosingle);
								break;
							case "romulti":
								//Get the output columns from the EPFormatFile
								//create an "Item" subnode for each selected RO
								//set the nodes value = to those resolved items
								//separated by multiseparator
								foreach (string ival in val.Split(multiseparator.ToCharArray()))
								{
									XmlElement xindivid_romulti = xindivid.OwnerDocument.CreateElement("Item");
									xindivid_romulti.Attributes.SetNamedItem(AddAttribute(xindivid_romulti.OwnerDocument, "ROID", ival));
									List<string> ro_multi_tmp = EP.getROValuesList(EPAnnotation, ival);
									xindivid_romulti.InnerText = String.Join(multiseparator, ro_multi_tmp.ToArray());
									xindivid.AppendChild(xindivid_romulti);
								}
								break;
							case "tableinput":
								xindivid.InnerText = val;
								break;
							default:
								xindivid.InnerText = val;
								break;
						}
						xepdetails.AppendChild(xindivid);
					}

					xepinfo.AppendChild(xepdetails);
				}

				xe.AppendChild(xepinfo);
			}

		}

		//clear objects to release memory
		private void OnClose(object sender, EventArgs e)
		{
			DocReplace.Clear();
			DocReplace = null;
		}


	}
}