PAGETYPE_UNKNOWN = "Unknown";
PAGETYPE_INFORMATION = "Information";
PAGETYPE_EXERCISE = "Exercise";
PAGETYPE_HIDDEN = "Hidden";

PAGESTATUS_NOT_ATTEMPTED = "N";
PAGESTATUS_INCOMPLETE = "I";
PAGESTATUS_COMPLETED = "C";
PAGESTATUS_PASSED = "P";
PAGESTATUS_FAILED = "F";

KEY_SEP = "#|#";

/*
  *
  *
  */
UELOInteractions = function()
{
	this.id = "";
	this.correctResponses = "";
	this.time = "";
	this.type = "";
	this.weighting = "";
	this.studentResponse = "";
	this.status = "N";
	this.result = "";
	this.score = "";
	this.question = "";
	this.latency = "";
}

UELOInteractions.prototype.AddCorrectResponses = function(pattern)
{
	var p = this.FindCorrectResponses(pattern);
	if (p == null)
	{
		p = this.correctResponses[this.correctResponses.length] = pattern; 
	}
	return p;
}

UELOInteractions.prototype.FindCorrectResponses = function(pattern)
{
	for (var i = 0; i < this.correctResponses.length; i++)
	{
		if (this.correctResponses[i] == pattern)
		{
			return this.correctResponses[i];
		}
	}
	return null;
}

UELOInteractions.prototype.setValue = function(name, value)
{
	// wyjatki do poprawinie i ujednolicenia
	
	if (name == "answers") name = "studentResponse";
	if (name == "group") name = "id";
	
	if (typeof(this[name]) == "undefined") return;
	
	if (name == "status"){
		//alert(name+'::'+value);
		if(value=='P') this['result']=true;
		else this['result']=false;
	}
	
	if (typeof(this[name]) == "number" || typeof(this[name]) == "string" || typeof(this[name]) == "boolean"){
		//alert(name+'::'+value);
		this[name] = value;
	}
}

UELOInteractions.prototype.getValue = function(name)
{
	return (typeof(this[name] != "undefined")) ? this[name] : null;
}

UELOInteractions.prototype.setResult = function(value)
{
	if(value==true){
		this.result=true;
		this.status='P';
	}else{
		this.result=false;
		this.status='F';
	}
	
}
/*
  *
  *
  */
UELOPage = function()
{
	this.pageId = "";
	this.scoId = "";
	this.type = -1;
	this.pageType = PAGETYPE_UNKNOWN;
	this.status = PAGESTATUS_NOT_ATTEMPTED;
	this.title = "";
	this.globalIndex = -1;
	this.pageVisited = 0;
	
	this.correctResponses = new Array();
	this.interactions = new Array();
}

UELOPage.prototype.setValue = function(name, value)
{
	
	// wyjatki do poprawinie i ujednolicenia
	if (typeof(this[name]) == "undefined") return;	
	if (typeof(this[name]) == "number" || typeof(this[name]) == "string" || typeof(this[name]) == "boolean"){
		
		this[name] = value;
	}

}


UELOPage.prototype.AddInteraction = function(elementId, question, correctResponses, score)
{
	//alert("elementId: "+elementId+", question: "+question+", correctResponses: "+correctResponses+", score: "+score);
	/*
	if (elementType.indexOf('Light',0) > 0){
		elementType=elementType.substring(0,elementType.indexOf('Light',0));
	}
	*/
	var interId = this.FormatInteractionId(elementId, this.globalIndex);
	var inter = this.FindInteraction(interId);
	if (inter == null)
	{	
		var inter = this.interactions[this.interactions.length] = new UELOInteractions();
		//alert('il= '+this.interactions.length);
		inter.id = interId;
		inter.question = question || "";
		inter.score = score || "";
		inter.correctResponses = correctResponses || "";
		return  inter;
	} else {
		return inter;
	}
}

UELOPage.prototype.FindInteraction = function(interId)
{
	//alert('1:'+interId+', il= '+this.interactions.length);
	for (var i = 0; i < this.interactions.length; i++)
	{
		var inter = this.interactions[i];
		if (inter.id == interId)
		{
			return inter;
		}
	}
	return null;
}

UELOPage.prototype.FormatInteractionId = function(elementId, pageGlobalIndex)
{
	return elementId + "_" + pageGlobalIndex;
}

/*
  *
  *
  */
UELO = function()
{
	this.pages = new Array();

	this.keySep = KEY_SEP;
	
	this.scoId = "";
	this.courseName = "";
	this.courseDescription = "";
	
	this.username = "";
	this.password = "";
	this.organisation = "";
	this.server = "";
	this.percentCompleted = "";
	this.pagesCount = 0;
	this.exercisePagesCount = 0;
	this.pagesVisited = 0;
	this.pointsMax = 100;
	this.points = 0;
	this.passThreshold = 100;
	this.beginTime = new Date();
	this.endTime = new Date();
	this.sessionTime = 0;
	
	this.writeValuesList = new Array("organisation", "username", "password", "server", "percentCompleted", "pagesVisited", "pointsMax", "points", "passThreshold",  "beginTime", "endTime", "courseName", "courseDescription","keySep");
}

UELO.prototype.AddPage = function()
{
	var p = new UELOPage();
	this.pages[this.pages.length] = p;
	this.pagesCount++;
	return p;
}

//parent.UELO.LoadFromForm(string textAreaName) - wczytuje wartosci z TextArea na formularzu
UELO.prototype.LoadFromForm = function(textAreaName)
{

}

//String parent.UELO.getHeaderString(String Name) - daje text z naglowka 
UELO.prototype.GetHeaderString = function(name)
{
	for (var k in this)
	{
		var type = typeof(this[k]);
		if (type == "number" || type == "string" || type == "boolean" || type == "object")
		{
			return this[k];
		}
	}
	return null;
}

UELO.prototype.setHeaderString = function(name, value)
{
	///!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
	/// wyjatki do poprawinie i ujednolicenia
	if (name == "Server_for_check_Answers") name = "server";
	
	var f = new RegExp("^" + name + "$", "gi");
	for (var k in this)
	{
		if (k.match(f))
		{
			for (var j = 0; j < this.writeValuesList.length; j++)
			{
				if (this.writeValuesList[j].toLowerCase() == k.toLowerCase())
				{
					if (typeof(this[k]) == "number" || typeof(this[k]) == "string" || typeof(this[k]) == "boolean")
					{
						this[k] = value;
						return;
					}
					if (typeof(this[k]) == "object" && (k == "beginTime" || k == "endTime")) 
					{
						this[k] = this.stringToDate(value);
						return;
					}
				}
			}
		}
	}
}

//String parent.UELO.getDataStringByID(int PageId;String ColumnName) - daje text z danych linia szukajac po PageId
UELO.prototype.GetDataStringByID = function(pageId, name)
{

}

//String parent.UELO.getDataStringByIdx(int RowIdx;String ColumnName) - daje text z danych linia RowIdx
UELO.prototype.GetDataStringByIdx = function(rowIdx, columnName)
{

}

//String parent.UELO.getDataStringByName(String PageName;String ColumnName) - daje text z danych linia szukajac po PageId
UELO.prototype.GetDataStringByName = function(pageName, columnName)
{

}

//int parent.UELO.getDataRowCount() - daje ilosc linii
UELO.prototype.GetDataRowCount = function()
{

}

//String parent.UELO.setDataStringByID(int PageID;String ColumnName,String value)
UELO.prototype.SetDataStringByID = function(pageID, columnName, value)
{

}

UELO.prototype.setPageStatus = function(pageGlobalIndex,newPageStatus)
{
	var p = this.FindPage(pageGlobalIndex);
	if(p){
		p.status = newPageStatus;
	}
}

UELO.prototype.setPageVisited = function(pageGlobalIndex)
{
	var p = this.FindPage(pageGlobalIndex);
	if(p){
		p.pageVisited = 1;
	}
	this.setPercentCompleted();
}

UELO.prototype.setPercentCompleted = function()
{
	var allPages=this.getPagesCount(null);
	var visitedPages=this.getPagesVisitedCount('VISITED');
	var pagesC=''+((visitedPages*100)/allPages);
	if(pagesC.indexOf('.')>0) pagesC=pagesC.substr(0,pagesC.indexOf('.')+3);
	//alert(allPages+', '+visitedPages+', '+pagesC);
	this.percentCompleted = pagesC;	
}


UELO.prototype.getPagesCount = function(pageType)
{
	var exCnt = 0;
	var infCnt = 0;
	var fullCnt = 0;
	var visCnt = 0;
	//if(!pageType) return this.pages.length;
	
	for (var i = 0; i < this.pages.length; i++) {		
		if(this.pages[i].pageType==PAGETYPE_HIDDEN) continue;
		if (this.pages[i].pageType == PAGETYPE_EXERCISE) exCnt++;
		else infCnt++;
		fullCnt++;
	}
	
	if(!pageType) return fullCnt; 
	if (pageType=PAGETYPE_EXERCISE) return exCnt;
	else return infCnt;
}

UELO.prototype.getPagesVisitedCount = function()
{
	var visCnt = 0;
	
	for (var i = 0; i < this.pages.length; i++) {		
		if(this.pages[i].pageType==PAGETYPE_HIDDEN) continue;
		if (this.pages[i].pageVisited == 1) visCnt++;
	}
	return visCnt;
}

UELO.prototype.FindPage = function(pageGlobalIndex)
{
	for (var i = 0; i < this.pages.length; i++) {		
		if (this.pages[i].globalIndex == pageGlobalIndex) {
			return this.pages[i]
		}		
	}
	return null;
}

UELO.prototype.AddInteractionToPage = function(pageGlobalIndex,elementId)
{
	var iterPage=this.FindPage(pageGlobalIndex);
	if(iterPage==null) return null;
	return iterPage.AddInteraction(elementId);
}

UELO.prototype.findInteraction = function(pageGlobalIndex, elementId)
{
	var iterPage = this.FindPage(pageGlobalIndex);
	if(iterPage == null) return null;	
	return iterPage.FindInteraction(elementId);
}

//String parent.UELO.setDataStringByID(int PageID;String ColumnName,String value)
UELO.prototype.GetStudentAnswer = function(pageGlobalIndex, elementId)
{
	var iterPage=this.FindPage(pageGlobalIndex);
	if(iterPage==null) return null;
	var interId = iterPage.FormatInteractionId(elementId, iterPage.globalIndex);
	var iter=iterPage.FindInteraction(interId);
	if(iter==null) return null;
	return iter.studentResponse;
}

UELO.prototype.setUELOData = function()
{
	this.endTime = new Date();
	this.sessionTime = this.calculateTimeToString(this.beginTime, new Date());	
}

UELO.prototype.toWBTSString = function()
{
	var r = "";
	r += "[UniversalElearningDataObjectHeader]\n";
	r += "Organisation=" + this.organisation + "\n";
	r += "Username=" + this.username + "\n";
	r += "Password=" + this.password + "\n";
	r += "ServerForCheckAnswers=" + this.server + "\n";
	r += "PercentCompleted=" + this.percentCompleted + "\n";
	r += "PagesCount=" + this.getPagesCount(null) + "\n";
	r += "ExercisePagesCount=" + this.getPagesCount(PAGETYPE_EXERCISE) + "\n";
	r += "PagesVisited=" + this.getPagesVisitedCount() + "\n";
	r += "PointsMax=" + this.pointsMax + "\n";
	r += "Points=" + this.points + "\n";
	r += "PassThreshold=" + this.passThreshold + "\n";
	r += "BeginTime=" + this.dateTimeToString(this.beginTime) + "\n";
	r += "EndTime=" + this.dateTimeToString(this.endTime) + "\n";
	r += "SessionTime=" + this.calculateTimeToString(this.beginTime, this.endTime) + "\n";
	r += "KeySep=" + this.keySep + "\n";
	r += "\n";
	r += "[UniversalElearningDataObjectDataFormat]" + "\n";
	r += "sco_identifier" + this.keySep + "page_identifier" + this.keySep + "globalPageIndex" + this.keySep + "group" + this.keySep + "question" + this.keySep + "answers" + this.keySep + "score" + this.keySep + "status" + this.keySep + "pageType" + "\n";
	r += "\n";
	r += "[UniversalElearningDataObjectData]" + "\n";
	
	for (var i = 0; i < this.pages.length; i++)
	{
		var page = this.pages[i];
		if(page.pageType==PAGETYPE_HIDDEN) continue;
		if(page.pageType==PAGETYPE_EXERCISE){
			for (var j = 0; j < page.interactions.length; j++)
			{
				var inter = page.interactions[j];
				r += uelo.scoId + this.keySep + page.pageId + this.keySep + page.globalIndex + this.keySep + inter.id + this.keySep + inter.question + this.keySep + inter.studentResponse + this.keySep + inter.score + this.keySep + inter.status + this.keySep + "E \n";
			}
		}else{
			//var pStatus="N";
			r += uelo.scoId + this.keySep + page.pageId + this.keySep + page.globalIndex + this.keySep + this.keySep + this.keySep + this.keySep + "1" + this.keySep + page.status + this.keySep + "I \n";
		}
	}
	
	return r;
}

UELO.prototype.toFullString = function()
{
	var r = "";
	r += "[UniversalElearningDataObjectHeader]\n";
	r += "ScoId=" + this.scoId + "\n";
	r += "CourseName=" + this.courseName + "\n";
	r += "CourseDescription=" + this.courseDescription + "\n";
	r += "Organisation=" + this.organisation + "\n";
	r += "Username=" + this.username + "\n";
	r += "Password=" + this.password + "\n";
	r += "ServerForCheckAnswers=" + this.server + "\n";
	r += "PercentCompleted=" + this.percentCompleted + "\n";
	r += "PagesCount=" + this.getPagesCount(null) + "\n";
	r += "ExercisePagesCount=" + this.getPagesCount(PAGETYPE_EXERCISE) + "\n";
	r += "PagesVisited=" + this.getPagesVisitedCount() + "\n";
	r += "PointsMax=" + this.pointsMax + "\n";
	r += "Points=" + this.points + "\n";
	r += "PassThreshold=" + this.passThreshold + "\n";
	r += "BeginTime=" + this.dateTimeToString(this.beginTime) + "\n";
	r += "EndTime=" + this.dateTimeToString(this.endTime) + "\n";
	r += "SessionTime=" + this.calculateTimeToString(this.beginTime, this.endTime) + "\n";
	r += "KeySep=" + this.keySep + "\n";
	r += "\n";
	r += "[UniversalElearningDataObjectDataFormat]" + "\n";
	r += "sco_identifier" + this.keySep + "page_identifier" + this.keySep + "globalPageIndex" + this.keySep + "group" + this.keySep + "question" + this.keySep + "answers" + this.keySep + "score" + this.keySep + "status" + this.keySep + "pageType" + "\n";
	r += "\n";
	r += "[UniversalElearningDataObjectData]" + "\n";
	
	for (var i = 0; i < this.pages.length; i++)
	{
		var page = this.pages[i];
		r += "\n";
		r += "[UniversalElearningDataObjectDataPage]" + "\n";
		r += page.pageId + this.keySep + page.scoId+ this.keySep + page.type+ this.keySep + page.pageType+ this.keySep + page.status+ this.keySep + page.title+ this.keySep + page.globalIndex+ "\n";
		for (var j = 0; j < page.interactions.length; j++)
		{
			var inter = page.interactions[j];
			r += "    [UniversalElearningDataObjectDataPageInteraction]" + "\n";
			r += "    "+inter.id + this.keySep + inter.correctResponses + this.keySep + inter.studentResponse + this.keySep + inter.time + this.keySep + inter.type + this.keySep + inter.weighting + this.keySep + inter.status + this.keySep + inter.result + this.keySep + inter.score + this.keySep + inter.question + this.keySep + inter.latency + "\n";
		}
	}
	
	return r;
}


UELO.prototype.calculateTimeToString = function(dateStart, dateEnd)
{
  var dd = Math.abs( dateEnd.getTime() - dateStart.getTime() );
  var ts = Math.floor( ( ( (dd % (60 * 60 * 1000 * 24) ) % (60 * 60 * 1000) ) % ( 60 * 1000 ) ) / 1000 * 1 );
  var tm = Math.floor( (dd % (60 * 60 * 1000 * 24)) % ((60 * 60 * 1000)) / (60 * 1000) );
  var th = Math.floor( (dd % (60 * 60 * 1000 * 24)) / (60 * 60 * 1000) );

  var sh = ((th < 10) ? "0" : "") + th;
  var sm = ((tm < 10) ? "0" : "") + tm;
  var ss = ((ts < 10) ? "0" : "") + ts;

  return ("" + sh + ":" + sm + ":" + ss);
};

UELO.prototype.timeToString = function(date)
{
  var ts = date.getSeconds();
  var tm = date.getMinutes();
  var th = date.getHours();
  var th = ((th < 10) ? "0" : "") + th;
  var tm = ((tm < 10) ? "0" : "") + tm;
  var ts = ((ts < 10) ? "0" : "") + ts;

  return ("" + th + ":" + tm + ":" + ts);
};

UELO.prototype.dateTimeToString = function(date)
{
  var ts = date.getSeconds();
  var tm = date.getMinutes();
  var th = date.getHours();
  var th = ((th < 10) ? "0" : "") + th;
  var tm = ((tm < 10) ? "0" : "") + tm;
  var ts = ((ts < 10) ? "0" : "") + ts;
  
  var day = date.getDate();
  var month = date.getMonth() + 1;
  var year = date.getFullYear();
  var day = ((day < 10) ? "0" : "") + day;
  var month = ((month < 10) ? "0" : "") + month;
  var year = ((year < 10) ? "0" : "") + year;

  return (year + "-" + month + "-" + day + " " + th + ":" + tm + ":" + ts);
};

UELO.prototype.stringToDate = function(s)
{
	var r = new RegExp("(\\d{4})-(\\d{2})-(\\d{2}) (\\d{2}):(\\d{2}):(\\d{2})");
	var a = s.match(r);
	return (a.length == 7) ? new Date(a[1], parseInt(a[2]) - 1, a[3], a[4], a[5], a[6]) : new Date();
}


UELO.prototype.toString = function()
{
	return this.toFullString();
}

UELO.prototype.__parseFindGroup = function(a, name)
{
	var key = new RegExp("^\\[" + name + "\\]$", "i");
	for (var i = 0; i < a.length; i++)
	{
		if (a[i].match(key)) 
		{
			return i;
		}
	}
	return null;
}

UELO.prototype.loadFromString = function(s)
{
	s = s.replace(new RegExp("\r", "g"), "");
	var lines = s.split("\n");
	//header
	var index = this.__parseFindGroup(lines, "UniversalElearningDataObjectHeader");
	if (index == null) 
	{
		return;
	}
	
	var i = index;
	while (i++ < lines.length - 1)
	{
		var p = lines[i].indexOf("=");
		if (p > 0)
		{
			var key = lines[i].slice(0, p);
			var value = lines[i].slice(p + 1);
			this.setHeaderString(key, value);
		} else {
			break;
		}
	}
	var index = this.__parseFindGroup(lines, "UniversalElearningDataObjectDataFormat");
	if (index == null) 
	{
		return;
	}

	var keyMatrix = lines[index + 1].split(this.keySep);
	var gpi = -1; // globalPageIndex
	var eii = -1;  // elementIdIndex
	var dataPageType = -1; // pageType
	var dataPageId = -1; // pageId
	for (var j = 0; j < keyMatrix.length; j++)
	{
		//alert(keyMatrix[j]);
		if (keyMatrix[j].match(new RegExp("^globalPageIndex$", "gi")))
		{
			gpi = j;
		}
		if (keyMatrix[j].match(new RegExp("^group$", "gi")))
		{
			eii = j;
		}
		if (keyMatrix[j].match(new RegExp("^pageType$", "gi")))
		{
			dataPageType = j;
		}
		if (keyMatrix[j].match(new RegExp("^page_identifier$", "gi")))
		{
			dataPageId = j;
		}
		
	}
	//alert('dataPageType='+dataPageType);
	if (gpi == -1 || eii == -1)
	{
		return;
	}


	var index = this.__parseFindGroup(lines, "UniversalElearningDataObjectData");
	if (index == null) 
	{
		return;
	}
	var i = index;	
	while (i++ < lines.length - 1)
	{
		var data = lines[i].split(this.keySep);
		
		//if (data.length != keyMatrix.length) alert(data+'::'+data.length+'::'+keyMatrix.length+'::'+i);
		if (data.length == keyMatrix.length)
		{
			var o = this.findInteraction(data[gpi], data[eii]);
			//alert(data[gpi]+", "+data[eii]);
			if(!o){ 
				var ueloPage = this.FindPage(data[gpi]);				
				if(!ueloPage){ 
					//alert('0::'+data[dataPageType]+'::'+data[dataPageType].indexOf('E'));
					ueloPage= this.AddPage();
					ueloPage.type = 0;
					if(data[dataPageType].indexOf('E')>=0){
						ueloPage.pageType = PAGETYPE_EXERCISE;
					}else{
						ueloPage.pageType = PAGETYPE_INFORMATION;
					}
					ueloPage.pageId = data[dataPageId];
					ueloPage.globalIndex = data[gpi];	
					if(ueloPage.pageType == PAGETYPE_EXERCISE){
						o = ueloPage.interactions[ueloPage.interactions.length] = new UELOInteractions();
					}else{
						//
					}
				}
				if(ueloPage){
					//o = ueloPage.interactions[ueloPage.interactions.length] = new UELOInteractions();
				}
			}else{
				//alert('Wrong data!!!: '+data);
			}
			
			if (ueloPage){
				for (var j = 0; j < keyMatrix.length; j++){
					if (j != gpi && j != eii && j != dataPageType){
						//alert(keyMatrix[j]+"::"+data[j]);
						ueloPage.setValue(keyMatrix[j], data[j]);
					}
				}			
			}
			
			if (o){
				for (var j = 0; j < keyMatrix.length; j++){
					if (j != gpi){
						//alert(keyMatrix[j]+"::"+data[j]);
						o.setValue(keyMatrix[j], data[j]);
					}
				}
			}
		}
	}
}

var uelo = new UELO();