var query = new Object();

var Tags = new Array();

var TagRef = new Array();

var NameRef = new Array();

var Headers = new Array();

var Courses = new Array();

var CourseID = new Array();

var Files = new Array();

var xmlPath = '/ohcms/cores/files/xml.php';

var gTag = '';

var loc = document.location.hash.split(/\//g);



function _checkAll()

{

	$('#Tags').find('.field input').each(function() {

		$(this).attr('checked', 'checked');

	});

}



function _uncheckAll()

{

	$('#Tags').find('.field input').each(function() {

		$(this).attr('checked', '');

	});

}

function createLayout()

{

	

	Headers.push("Course Title","Semester","Year","Type","Pages","Instructor","Download");

	$('#Exams').html('<thead></thead><tbody></tbody><tfoot></tfoot>');

	txt = '<tr>';

	for(var i=0;i<Headers.length;i++)

	{

		txt += '<th>' + Headers[i] + '</th>';

	}

	txt += '</tr>';

	$('#Exams thead').html(txt);

}



function _ajaxGetTags()

{

	clear();

	query.method = 'listDirectory';

	query.path = '/Documents/Exam Registry';



	$.ajax({

		success: function(xml) {

			$(xml).find('Directory Directory').each(function() {

				tag = new Object;

				tag.Name = $(this).attr('Name');

				tag.Id = $(this).attr('Id');

				Tags.push(tag);

				

			});

		},

		complete: function() {

			txt = '';

			c = 0;

			col = '';

			colHeight = 15;

			for(var i=0;i<Tags.length;i++)

			{

				txt += (i%colHeight == 0) ? '<ol>' : '';

				txt += '<li><a class="exam-'+Tags[i].Id + col +'" href="#" onclick="_ajaxLoadExams('+Tags[i].Id+');return false;">'+Tags[i].Name+'</a></li>';

				txt += (i%colHeight == colHeight-1) ? '</ol>' : '';

				TagRef[Tags[i].Id] = Tags[i].Name;

				c++;

			}

			$('#Tags').html(txt);

		}

	});

}



function _ajaxLoadAllExams()

{

	clear();

	$('#Tags').find('.field input:checked').each(function() {

		CourseID.push($(this).val());

	});

	if(CourseID != '') {

		_ajaxLoadExams(CourseID);

	} else {

		txt = 'No Course Selected';

		$('#Exams tbody').html(txt);

	}

	

}





function _ajaxLoadExams(CourseID)

{

	loc = document.location.hash.split(/\//g);

	if(loc[1] == TagRef[CourseID]) {

		return;

	} else {

		$('#Exams tbody').fadeOut(200);

		clear();

		$('#Tags').find('li a.active').removeClass('active');

		

		$('.exam-'+CourseID).addClass('active');

		query.id = CourseID;

			$.ajax({

				async: false,

				success: function(xml) {

					$(xml).find('Directory Directory').each(function() {

						course = new Object();

						course.Name = $(this).attr('Name');

						course.Id = $(this).attr('Id');

						Courses.push(course);

					});

				}

			});

		

		_ajaxBuildNumSelect();

		gTag = TagRef[CourseID];

		//$('#currentCourse').html(gTag);

		

		if(Courses[0] == undefined) {

			txt = 'No Courses Found';

			$('#Exams tbody').html(txt);

			$('#Exams tbody').fadeIn(0);

			return false;

		} else {

			_ajaxLoadExamContent(Courses[0].Id)

		}

	}

}



function _ajaxBuildNumSelect() {

	txt = '';

	for(var i=0;i<Courses.length;i++)

	{

		txt += '<option val="'+Courses[i].Id+'">' + Courses[i].Name + '</option>';	

	}

	$('#courseNumSelect').html(txt);

}



function _ajaxLoadExamContent(dirID)

{

	clear();

	if(dirID == undefined){

		query.id = $('#courseNumSelect option:selected').attr('val');

	} else {

		query.id = dirID;

	}

	

	document.location = '#/' + gTag + '/' + $('#courseNumSelect option:selected').val();

	

	$.ajax({

		async: false,

		success: function(xml) {

			$(xml).find('File').each(function() {

				file = new Object();

				file.Name = $(this).attr('Name');

				file.Id = $(this).attr('Id');

				file.Link = $(this).find('Link').text();

				Files.push(file);

			});

		},

		complete: function() {

			txt = '';

			var o = 0;

			for(var i=0;i<Files.length;i++)

			{

				

				if(o==1) {

					odd = 'odd';

					o = 0;

				} else {

					odd = '';

					o++;

				}

				

				txt += '<tr class="'+odd+'">';

				txt += '<td>'+Files[i].Name+'</td>';

				txt += '<td></td><td></td><td></td><td></td><td></td>';

				txt += '<td><a target="_blank" href="'+Files[i].Link +'">'+ Files[i].Name +'</a></td>';

				txt += '</tr>';

				

			}

			

			$('#Exams tbody').html(txt);

			$('#Exams tbody').fadeIn(200);

		}

		

	});



}





function clear() {

	CourseID = [];

	Files = [];

	Courses = [];

}