jQuery(function($) {
	var $body = $('body');

	var structureModal = {};

	var modal = {};

	var images;

	var ajaxLink;

	var curHeight;

	var linkTitle;

	var linkText;

	var activeImage;

	var animateSpeed = 200;

	var isIE6 = false;

	if (window.external && (typeof window.XMLHttpRequest == "undefined")) {
		isIE6 = true;
	}

	var element;

	$.fn.PwModal = function(settings) {
		if (!this)
			return false;

		element = this;

		init();

		linkTitle = $(this).attr('title') ? $(this).attr('title') : "";

		linkText = $(this).text() ? $(this).text() : "";

		if ($(this).attr('rel')) {
			var list = $('[rel=' + $(this).attr('rel') + ']');

			if (list.size() > 1) {
				modal.isGallery = true;
			}

			activeImage = list.index(this);
			var img = new Array();
			$(list).each(function(){
				var image = {};
				image.preview = $(this).children('img').attr('src');
				image.full = $(this).attr('href');
				image.title = $(this).children('img').attr('alt');
				img.push(image);
			});
			images = img;
		} else {
			modal.isContent = true;
			ajaxLink = $(this).attr('href');
		}
		createStructure();
		return this;
	};

	$.fn.PwModal.settings = {};

	function init()
	{

		if (isIE6) {
			$("select").css({visibility:'hidden'});
			$body.css({
				height: $body.height()+'px',
				width: $body.width()+'px',
				position: 'static',
				overflow: 'hidden'
			});
			$('html').css({overflow: 'hidden'});
		}

		modal = {
			srtucture: {}, // структура окна
			ready: false, // false - окно не создано, true - окно создано
			isGallery: false, // false - контент, true - галерея
			isContent: false
		}

		$.fn.PwModal.settings = {
			startWidth: 480, //стартовая ширина
			startHeight: 480, //стартовая высота
			defaultWidth: 500,
			defaultHeight: 500,
			galleryHeight: (140/* + 36*/), //высота блока #pwModalThumb
			indent: 10 //отступ от края окна
		}

	}

	function createStructure()
	{
		if (modal.ready) {
			return;
		}
		$body.append(
			$(
				'<div id="pwModalFull">' +
					'<div id="pwModalBg" />' +
					'<div id="pwModalWindow">' +
						'<div id="pwModalThumb">' +
							'<h1>Фотографии</h1>' +
							'<div class="photos-i">' +
								'<div class="photos-inner" />' +
							'</div>' +
						'</div>' +
						'<div id="pwModalContent">' +
							'<div id="pwModalLoading" />' +
							'<a title="Предыдущее" id="pwModalPrev" href="#"><i class="g-png-c"><!-- --></i></a>' +
							'<a title="Следующее" id="pwModalNext" href="#"><i class="g-png-c"><!-- --></i></a>' +
						'</div>' +
						'<div id="pwModalInfo">' +
							'<a title="Предыдущее" id="pwModalPrev2" href="#">Предыдущее</a>' +
							'<a title="Следующее" id="pwModalNext2" href="#">Следующее</a>' +
							'<span>&nbsp;</span>' +
						'</div>' +
						'<div id="pwModalTitle">&nbsp;</div>' +
						'<a id="pwModalClose" title="Закрыть (Esc)" href="#">Закрыть</a>' +
					'</div>' +
				'</div>'
			).hide()
		);
		modal.structure = {
			full: $('#pwModalFull'),
			bg: $('#pwModalBg'),
			window: $('#pwModalWindow'),
			thumb: $('#pwModalThumb'),
			content: $('#pwModalContent'),
			loading: $('#pwModalLoading'),
			title: $('#pwModalTitle'),
			info: $('#pwModalInfo span'),
			next: $('#pwModalNext'),
			next2: $('#pwModalNext2'),
			prev: $('#pwModalPrev'),
			prev2: $('#pwModalPrev2'),
			close: $('#pwModalClose')
		};

		if (modal.isGallery) {

			modal.structure.thumb.remove();
			$.fn.PwModal.settings.galleryHeight = 0;

		} else {
			if (modal.isContent) {
				modal.structure.title.remove();
				modal.structure.close.addClass("cnt-close");
			}
			modal.structure.info.remove();
			modal.structure.thumb.remove();
			modal.structure.prev.remove();
			modal.structure.prev2.remove();
			modal.structure.next.remove();
			modal.structure.next2.remove();
			$.fn.PwModal.settings.galleryHeight = 0;

		}

		modal.structure.window.hide();

		modal.ready = true;

		calcSize = calculateSize($.fn.PwModal.settings.startWidth, $.fn.PwModal.settings.startHeight);
		modal.structure.content
			.css({
				width: calcSize.width + 'px',
				height: calcSize.height + 'px'
			});

		/*if (modal.isGallery) {
			$('.photos-i', modal.structure.thumb)
				.animate({
					width: calcSize.imgW,
					scrollLeft: ((((activeImage + 1) * 80) - 40) - Math.round(calcSize.imgW / 2))
				}, animateSpeed);

			modal.structure.title
				.animate({
					width: calcSize.imgW
				}, animateSpeed);
		}*/

		modal.structure.window
			.css({
				width: (calcSize.width + 18) + 'px',
				top: calcSize.top,
				left: calcSize.left
			})
			.show();

		modal.structure.full.fadeIn(300, function() {
			$(document).keyup(function(event){
			    if (event.keyCode == 27) {
			    	destruct();
			    }
			});
		});



		load();

		if (modal.isGallery) {

			$("#pwModalPrev2").click(function() {
				$(modal.structure.prev).trigger('click');
			});

			$("#pwModalNext2").click(function() {
				$(modal.structure.next).trigger('click');
			});

			modal.structure.next
				.click(function(){
					if (activeImage >= images.length - 1) {
						activeImage = -1;
					}
					activeImage++;
					showLoadingAndLoad();
					return false;
				});


			modal.structure.prev
				.click(function(){
					if (activeImage <= 0) {
						activeImage = images.length;
					}
					activeImage--;
					showLoadingAndLoad();
					return false;
				});
		}

		$(modal.structure.close).click(destruct);

		$(modal.structure.bg).click(destruct);

	}

	function destruct()
	{
		$(modal.structure.window).fadeOut(300, function(){

			if (isIE6) {
				$body.css({height: '', width: '', position: '', overflow: ''});
				$('html').css({overflow: ''});
				$("select").css({visibility:'visible'});
			}

			$(modal.structure.full).remove();
			$(document).unbind('keyup');
			clearTimeout(window.autoClose);
		});
		return false;
	}

	function load()
	{
		if (modal.isContent) {
			loadContent();
		} else {
			selectImage();
			loadImage();
		}
	}

	function loadContent()
	{
		var queryString = ajaxLink.replace(/^[^\?]+\??/,'');
		var params = parseQuery(queryString);

		var modalWidth = params['width'] ? parseInt(params['width']) : $.fn.PwModal.settings.defaultWidth;
		var modalHeight = params['height'] ? parseInt(params['height']) : $.fn.PwModal.settings.defaultHeight;
		var modalTop = calculateTop(modalHeight);
		var modalLeft = calculateLeft(modalWidth);

		$.get(
			ajaxLink,
			{},
			function(response) {
				modal.structure.window
					.animate({
						width: modalWidth,
						height: modalHeight + 25,
						top: modalTop,
						left: modalLeft
					}, animateSpeed);

				modal.structure.content
					.append(response)
					.animate({
						width: modalWidth,
						height: modalHeight
					}, animateSpeed, function(){
						modal.structure.loading.fadeOut();
						$(element).trigger('pwModalAfterLoad');
					});

			}
		);
	}

	function loadImage()
	{
		modal.structure.title.html('&nbsp;');

		var loadImg = new Image();
		loadImg.onload = function() {
			loadImg.onload = null;

			$('img', modal.structure.content).remove();

			calcSize = calculateSize(loadImg.width, loadImg.height);
			loadImg.width = calcSize.imgW;
			loadImg.height = calcSize.imgH;

			loadImg.alt = images[activeImage].title ? images[activeImage].title : linkText;


			if (loadImg.alt) {
				modal.structure.title
					.html("<span>" + loadImg.alt + "</span>")
					.show();
				if(linkTitle) {
					modal.structure.title
						.append("<br /><strong>" + linkTitle + "</strong>");
				}
			} else {
				modal.structure.title.html('&nbsp;');
			}

			modal.structure.info.html("<strong>Изображение " + parseInt(activeImage + 1) + "</strong> из " + images.length);

			if(modal.structure.info.height() > 0) {
				var infoHeight = modal.structure.info.height() + 31;
			} else {
				var infoHeight = 0;
			}

			modal.structure.window
				.animate({
					width: calcSize.width,
					height: (calcSize.height + $.fn.PwModal.settings.galleryHeight + modal.structure.title.height() + infoHeight),
					top: calcSize.top,
					left: calcSize.left
				}, animateSpeed);

			$('.photos-i', modal.structure.thumb)
				.animate({
					width: calcSize.imgW,
					scrollLeft: ((((activeImage + 1) * 80) - 40) - Math.round(calcSize.imgW / 2))
				}, animateSpeed);

			modal.structure.content
				.animate({
					width: calcSize.width,
					height: calcSize.height
				}, animateSpeed, function(){

					$(this).prepend(loadImg);

					modal.structure.loading.fadeOut(animateSpeed);
					$(element).trigger('pwModalAfterLoad');
				});
		}
		loadImg.src = images[activeImage].full;
	}

	function setImage()
	{
		var list = $('a', modal.structure.thumb);
		activeImage = list.index(this);
		showLoadingAndLoad();
		return false;
	}

	function selectImage()
	{
		var list = modal.structure.thumb.find('a');
		list.removeClass('actived');
		list.eq(activeImage).addClass('actived');
	}

	function showLoadingAndLoad()
	{
		selectImage();
		modal.structure.loading.fadeIn(600, function(){
			loadImage();
		});
	}

	function calculateSize(imageWidth, imageHeight)
	{
		var windowWidth = $(window).width() - ($.fn.PwModal.settings.indent * 2); // минус отступы от краев;
		var windowHeight = $(window).height() - ($.fn.PwModal.settings.indent * 2); // минус отступы от краев;

		windowHeight -= modal.structure.title.height();
		//console.log('titleHeight: ' + modal.structure.title.height());

		var calcSize = {
			top: 0,
			left: 0,
			width: 0,
			height: 0,
			imgW: 0,
			imgH: 0,
			scroll: 0
		}

		var navLinkWidth = 0;

		/*if (modal.isGallery) {
			windowHeight -= $.fn.PwModal.settings.galleryHeight;
			//console.log('galleryHeight: ' + $.fn.PwModal.settings.galleryHeight);
		}*/

		//console.log('window(w,h): ' + windowWidth + ', ' + windowHeight);


		if (imageWidth > windowWidth && imageHeight < windowHeight) {
			calcSize.width = windowWidth;
			calcSize.height = Math.round((calcSize.width * imageHeight) / imageWidth);
		}

		if (imageWidth < windowWidth && imageHeight > windowHeight) {
			calcSize.height = windowHeight;
			calcSize.width = Math.round((imageWidth * calcSize.height) / imageHeight);
		}

		if (imageWidth < windowWidth && imageHeight < windowHeight) {
			calcSize.width = imageWidth;
			calcSize.height = imageHeight;
		}

		if (imageWidth > windowWidth && imageHeight > windowHeight) {
			if ((windowWidth - imageWidth) < (windowHeight - imageHeight)) {
				calcSize.width = windowWidth;
				calcSize.height = Math.round((calcSize.width * imageHeight) / imageWidth);
			}
			else {
				calcSize.height = windowHeight;
				calcSize.width = Math.round((imageWidth * calcSize.height) / imageHeight);
			}
		}

		calcSize.imgH = Math.round(((calcSize.width - navLinkWidth) * calcSize.height) / calcSize.width);
		calcSize.imgW = calcSize.width - navLinkWidth;

		calcSize.height = calcSize.imgH;

		var tmpImgHeight = calcSize.height;
		/*if (modal.isGallery) {
			tmpImgHeight += $.fn.PwModal.settings.galleryHeight;
		}*/
		tmpImgHeight += modal.structure.title.height() + 18;

		calcSize.top = calculateTop(tmpImgHeight);
		calcSize.left = calculateLeft(calcSize.width);

		return calcSize;
	}

	function calculateTop(height)
	{
		var extraHeight = 0;
		if (isIE6) {
			extraHeight = $(window).scrollTop();
		}
		if (typeof window.innerWidth != 'undefined') {
			curHeight = window.innerHeight;
		} else if (typeof document.documentElement != 'undefined'
				&& typeof document.documentElement.clientWidth != 'undefined'
				&& document.documentElement.clientWidth != 0) {
			curHeight = document.documentElement.clientHeight;
		}

		return Math.round(((curHeight - height) / 2) + extraHeight) - 9;
	}

	function calculateLeft(width)
	{
		var extraWidth = 0;
		if (isIE6) {
			extraWidth = $(window).scrollLeft();
		}
		return Math.round((($(window).width() - width) / 2) + extraWidth) - 9;
	}

	function parseQuery (query) {
	   var params = {};
	   if (!query) {return params;}// return empty object
	   var pairs = query.split(/[;&]/);
	   for (var i = 0; i < pairs.length; i++) {
	      var keyVal = pairs[i].split('=');
	      if (!keyVal || keyVal.length != 2 ) { continue; }
	      var key = unescape( keyVal[0] );
	      var val = unescape( keyVal[1] );
	      val = val.replace(/\+/g, ' ');
	      params[key] = val;
	   }
	   return params;
	}
});

$(function(){
	$('.PwModal').click(function(){
		$(this).PwModal();
		return false;
	});
});