//
// QueryString
//

function QueryString(key)
{
	var value = null;
	for (var i=0;i<QueryString.keys.length;i++)
	{
		if (QueryString.keys[i]==key)
		{
			value = QueryString.values[i];
			break;
		}
	}
	return value;
}
QueryString.keys = new Array();
QueryString.values = new Array();

function QueryString_Parse()
{
	var query = window.location.search.substring(1);
	var pairs = query.split("&");
	
	for (var i=0;i<pairs.length;i++)
	{
		var pos = pairs[i].indexOf('=');
		if (pos >= 0)
		{
			var argname = pairs[i].substring(0,pos);
			var value = pairs[i].substring(pos+1);
			QueryString.keys[QueryString.keys.length] = argname;
			QueryString.values[QueryString.values.length] = value;		
		}
	}

}

QueryString_Parse();


//
// Answer
//
function Answer_WriteHTML()
{
	document.write('<INPUT type="radio" value="' + this.id + '" name="answers"> ');
	document.write('<span  class="quizText">' + this.text + '</span><br>');
}

function Answer(aID)
{
	this.text = "New Answer";
	this.id = aID;
	this.correct = false;
	
	this.WriteHTML = Answer_WriteHTML;
}

//
// AnswerList
//

function AnswerList_NewAnswer()
{
	var a = new Answer(this.sequenceID);
	this.sequenceID++;
	this.aList[this.aList.length] = a;

	// Optional Args: text, correct
	if (arguments.length > 0)
		a.text = arguments[0];

	if (arguments.length > 1)
		a.correct = arguments[1];

	if (this.editor)
		this.editor.AnswerSectionUpdate();
		
	return a;
}

function AnswerList_Remove(id)
{
	for (var i=0;i<this.aList.length;i++)
	{
		if (this.aList[i] && this.aList[i].id == id)
		{
			this.aList[i] = null;
			break;
		}
	}
}

function AnswerList_Find(id)
{
	var result = null;
	for (var i=0;i<this.aList.length;i++)
	{
		if (this.aList[i] && this.aList[i].id == id)
		{
			result = this.aList[i];
			break;
		}
	}
	return result;
}

function AnswerList_WriteHTML()
{
	for (var i=0;i<this.aList.length;i++)
		this.aList[i].WriteHTML();
}

function AnswerList(editor)
{
	this.editor = editor;
	this.sequenceID = 0;
	this.aList = new Array();
	
	this.NewAnswer = AnswerList_NewAnswer;
	this.Remove = AnswerList_Remove;
	this.Find = AnswerList_Find;
	this.WriteHTML = AnswerList_WriteHTML;
}

//
// Question
//

function Question_NewAnswer(text,correct)
{
	this.answerList.NewAnswer(text,correct);
}

function Question_WriteHTML()
{
	document.write('<p class="quizQuestion">Q: ' + this.text + '</p>');
	this.answerList.WriteHTML();
}

function Question_GetCorrectAnswer(text,correct)
{
	var result = "";
	for (var i=0;i<this.answerList.aList.length;i++)
	{
		if (this.answerList.aList[i] && this.answerList.aList[i].correct)
		{
			result = this.answerList.aList[i].text;
			break;
		}
	}
	return result;
}

function Question(qID,editor)
{
	this.text = "New Question";
	this.id = qID;
	this.editor = editor;
		
	this.answerList = new AnswerList(editor);
	
	this.NewAnswer = Question_NewAnswer;
	this.WriteHTML = Question_WriteHTML;
	this.GetCorrectAnswer = Question_GetCorrectAnswer;
}

//
// QuestionList
//

function QuestionList_NewQuestion()
{
	var q = new Question(this.sequenceID,this.editor);
	this.sequenceID++;
	this.qList[this.qList.length] = q;
	
	// Optional Args: text
	if (arguments.length > 0)
		q.text = arguments[0];
	
	if (this.editor)
		this.editor.QuestionItemsAdd(q);
		
	return q;
}

function QuestionList_Remove(id)
{
	for (var i=0;i<this.qList.length;i++)
	{
		if (this.qList[i] && this.qList[i].id == id)
		{
			this.qList[i] = null;
			break;
		}
	}
}

function QuestionList_Find(id)
{
	var result = null;
	for (var i=0;i<this.qList.length;i++)
	{
		if (this.qList[i] && (this.qList[i].id == id))
		{
			result = this.qList[i];
			break;
		}
	}
	return result;
}

function QuestionList_WriteHTML()
{
	var index = 0;
	
	var lastQuestion = QueryString("lastQuestion");
	var ccount = QueryString("ccount");

	if (ccount == null)
		ccount = 0;
	else
		ccount = parseInt(ccount);

	document.write('<form name="quiz" method="GET" onsubmit="return QuestionListValidate(this)">');
		
	
	if (lastQuestion!=null)
	{
		lastQuestion = parseInt(lastQuestion);
		index = 1 + lastQuestion;
		var answerID = parseInt(QueryString("answers"));
		
		if (this.qList[lastQuestion].answerList.aList[answerID].correct)
		{
			document.write('<p class="quizRightWrong"></p>');
			ccount++;
		}
		else
		{
			var correctAnswer = this.qList[lastQuestion].GetCorrectAnswer();
			document.write('<p class="quizRightWrong"></p>');
		}
		
		
	}
	
	if (index < this.qList.length)
	{
		document.write('<input type="hidden" name="lastQuestion" value="' + index + '">')
		
		this.qList[index].WriteHTML();
		document.write('<p><input type="submit" name="submit" value="Next Question >>"></p>')
	}
	else
	{
		var score = Math.round((ccount*100)/this.qList.length);
		var scoreResults = this.ScoreResults(Math.min(Math.floor(score/10),9));
		document.write('<p class="quizText">You answered ' + ccount + ' questions out of ' +
			this.qList.length + ' Yes.</p>');
		document.write('<p class="quizText">Your score is ' + score + '%. ' + scoreResults + '</p>');
	}
	
	document.write('<input type="hidden" name="ccount" value="' + ccount + '">')
	document.write('</form>');
	
}

function QuestionList_ScoreResults(index,text)
{
	// Optional Args: text
	if (arguments.length > 1)
	{
		this.scoreResults[index] = text;
	}
		
	return this.scoreResults[index];
}

function QuestionList(editor)
{
	this.sequenceID = 0;
	this.qList = new Array();
	this.scoreResults = new Array(10);
	this.editor = editor;
	
	this.NewQuestion = QuestionList_NewQuestion;
	this.Remove = QuestionList_Remove;
	this.Find = QuestionList_Find;
	this.WriteHTML = QuestionList_WriteHTML;
	this.ScoreResults = QuestionList_ScoreResults;
}

function QuestionListValidate(theForm)
{
	var validated = false;
	
	for (var i=0;i<theForm.answers.length;i++)
	{
		if (theForm.answers[i].checked == true)
		{
			validated = true;
			break;
		}
	}
	
	if (!validated)
		alert("Please select an answer before continuing.");
	
	return validated;
}

var gQuestionList = new QuestionList(null);

// Quiz Source Start (to edit with QuizEditor copy/paste between here and end
// -->
gQuestionList.ScoreResults(0,"Although you may not be experiencing symptoms of Depression or only a couple of symptoms, you were still concerned enough to take this quiz. Read more about Depression with the resources below and be sure to discuss your concerns with your doctor, if you still feel there is a problem.");
gQuestionList.ScoreResults(1,"You have indicated that you have some symptoms similar to those of Depression. Learn more about Depression with the resources below and be sure to discuss your concerns with your doctor.");
gQuestionList.ScoreResults(2,"You have indicated that you have some symptoms similar to those of Depression. Learn more about Depression with the resources below and be sure to discuss your concerns with your doctor.");
gQuestionList.ScoreResults(3,"You have indicated that you have some symptoms similar to those of Depression. Learn more about Depression with the resources below and be sure to discuss your concerns with your doctor.");
gQuestionList.ScoreResults(4,"You have indicated that you have some symptoms similar to those of Depression. Learn more about Depression with the resources below and be sure to discuss your concerns with your doctor.");
gQuestionList.ScoreResults(5,"You have indicated that you have several symptoms that fit the criteria for Depression. Please talk to a healthcare provider about your symptoms and learn more about Depression below. ");
gQuestionList.ScoreResults(6,"You have indicated that you have several symptoms that fit the criteria for Depression. Please talk to a healthcare provider about your symptoms and learn more about Depression below.");
gQuestionList.ScoreResults(7,"You have indicated that you have several symptoms that fit the criteria for Depression. Please talk to a healthcare provider about your symptoms and learn more about Depression below.");
gQuestionList.ScoreResults(8,"You have many symptoms of Depression and they are interfering severely with your normal routines. Please talk to a healthcare provider and learn more about Depression below.");
gQuestionList.ScoreResults(9,"You have many symptoms of Depression and they are interfering severely with your normal routines. Please talk to a healthcare provider and learn more about Depression below.");
q = gQuestionList.NewQuestion("Over the past two weeks, have you been feeling low in energy or slowed down?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you been blaming yourself for things?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you had poor appetite?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you had difficulty falling asleep or staying asleep?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you been feeling hopeless about the future?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you been feeling blue?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you been feeling no interest in things?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you had feelings of worthlessness?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you thought about wanting to commit suicide?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);
q = gQuestionList.NewQuestion("Over the past two weeks, have you had difficulty concentrating or making decisions?");
q.NewAnswer("Yes",true);
q.NewAnswer("No",false);

// <-- Quiz Source End