(function($) {
	$.fn.glanceyear = function(massive, options) {

		var $_this = $(this);

		var settings = $.extend({
			eventClick: function(e) { alert('Date: ' + e.date + ', Count:' + e.count); },
			months: ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],
			weeks: ['M','T','W','T','F','S', 'S'],
			targetQuantity: '.glanceyear-quantity',
			tagId: 'glanceyear-svgTag',
			today: new Date()
		}, options );

		var svgElement = createElementSvg('svg', {'width': 54*12+15, 'height': 7*12+15 } );

		var gElementContainer = createElementSvg('g', {'transform': 'translate(15, 15)'} );

		var $_tag = $('<div>')
			.addClass('svg-tag')
			.attr('id', settings.tagId)
			.appendTo( $('body') )
			.hide();

		var dayCount = 366;
		var monthCount;


		//Weeks
		for (var i=0; i<54; i++) {
			var gElement = createElementSvg('g', {'transform': 'translate('+(12*i)+',0)'} );   
			var firstDate = new Date();
			firstDate.setMonth(settings.today.getMonth());
			firstDate.setFullYear(settings.today.getFullYear());
			firstDate.setDate(settings.today.getDate() - dayCount-1);

			var daysLeft = daysInMonth(firstDate) - firstDate.getDate();

			// Days in week
			for (var j=firstDate.getDay(); j<7 ; j++) {

				var rectDate = new Date();
				rectDate.setMonth(settings.today.getMonth());
				rectDate.setFullYear(settings.today.getFullYear());
				rectDate.setDate(settings.today.getDate() - dayCount);
				
				if (rectDate.getFullYear() != settings.today.getFullYear()) {
					dayCount--;
					continue; 
				}

				if (rectDate.getFullYear() == settings.today.getFullYear() && rectDate.getMonth() != monthCount && i < 52 && j > 3 && daysLeft > 7) {
					//new Month
					var textMonth = createElementSvg('text', {'x': 12*i, 'y':'-6', 'class':'month'} );
					textMonth.textContent = getNameMonth(rectDate.getMonth());
					gElementContainer.appendChild(textMonth);
					monthCount = rectDate.getMonth();
				} 

				dayCount--;
				if (dayCount>=-1) {
					// Day-obj factory

					var rectElement = createElementSvg('rect', {
						'class': 'day',
						'width': '10px',
						'height': '10px',
						'data-date': rectDate.getFullYear()+'-'+(rectDate.getMonth()+1)+'-'+rectDate.getDate(),
						'y': 12*j            
					});

					rectElement.onmouseover = function() {
						var dateString = $(this).attr('data-date').split('-');
						var date = new Date(dateString[0], dateString[1]-1, dateString[2]);

						var tagDate =  getBeautyDate(date);
						var tagCount = $(this).attr('data-count');
						var tagCountData = $(this).attr('data-count');

						if (tagCountData) {
							if (tagCountData > 1 )
								tagCount = $(this).attr('data-count')+' QSOs';
							else
								tagCount = $(this).attr('data-count')+' QSO';
						} else {
							tagCount = 'No QSOs';
						}

						$_tag.html( '<b>' + tagCount + '</b> @ ' + tagDate)
						.show()
						.css({
							'left': $(this).offset().left - $_tag.outerWidth()/2+5,
							'top': $(this).offset().top-33
						});
					};

					rectElement.onmouseleave = function() {
						$_tag.text('').hide();
					}

					rectElement.onclick = function() {
						settings.eventClick(
							{
								date: $(this).attr('data-date'),
								count: $(this).attr('data-count') || 0
							}
						);

					}

					gElement.appendChild(rectElement);
				}
			}

		gElementContainer.appendChild(gElement);
		}
		var textM = createElementSvg('text', {'x':'-14', 'y':'8'} );
			textM.textContent = getNameWeek(0);
			gElementContainer.appendChild(textM);
		var textW = createElementSvg('text', {'x':'-14', 'y':'32'} );
			textW.textContent = getNameWeek(2);
			gElementContainer.appendChild(textW);
		var textF = createElementSvg('text', {'x':'-14', 'y':'56'} );
			textF.textContent = getNameWeek(4);
			gElementContainer.appendChild(textF);
		var textS = createElementSvg('text', {'x':'-14', 'y':'80'} );
			textS.textContent = getNameWeek(6);
			gElementContainer.appendChild(textS);
		
		svgElement.appendChild(gElementContainer);

		// Append Calendar to document;
		$_this.append(svgElement);

		fillData(massive);



		function createElementSvg(type, prop ) {
			var e = document.createElementNS('http://www.w3.org/2000/svg', type);
			for (var p in prop) {
				e.setAttribute(p, prop[p]);
			}
			return e;
		}


		function fillData(massive) {
			var scoreCount = 0;
			for (var m in massive) {
				$_this.find('rect.day[data-date="' + massive[m].date + '"]').attr('data-count', massive[m].value);
				$_this.find('rect.day[data-date="' + massive[m].date + '"]').attr('data-col', massive[m].col);
				scoreCount += parseInt(massive[m].value);
			}
			$(settings.targetQuantity).text(scoreCount + ' QSOs');

		}

		function getNameMonth(a) {
			return settings.months[a];
		}
		function getNameWeek(a) {
			return settings.weeks[a];
		}
		function getBeautyDate(a) {
			return getNameMonth(a.getMonth()) + ' ' + a.getDate() + ', ' + a.getFullYear();
		}
		function daysInMonth(d) {
			return 32 - new Date(d.getFullYear(), d.getMonth(), 32).getDate();
		}
	};
})(jQuery);