/*
 * jQuery Nivo Slider v2.0
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 */

(function ($) {

	$.fn.nivoSlider = function (options) {

		//Defaults are below
		var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

		return this.each(function () {
			//Useful variables. Play carefully.
			var vars = {
				currentSlide: 0,
				currentImage: '',
				totalSlides: 0,
				randAnim: '',
				running: false,
				paused: false,
				stop: false
			};

			//Get this slider
			var slider = $(this);
			slider.data('nivo:vars', vars);
			slider.css('position', 'relative');
			slider.addClass('carousel-active');

			//Find our slider children
			var kids = slider.children();
			kids.each(function () {
				var child = $(this);
				var link = '';
				if (!child.is('img')) {
					if (child.is('a')) {
						child.addClass('carousel-link');
						link = child;
					}
					child = child.find('img:first');
				}
				//Get img width & height
				var childWidth = child.width();
				if (childWidth == 0) childWidth = child.attr('width');
				var childHeight = child.height();
				if (childHeight == 0) childHeight = child.attr('height');
				//Resize the slider
				if (childWidth > slider.width()) {
					slider.width(childWidth);
				}
				if (childHeight > slider.height()) {
					slider.height(childHeight);
				}
				if (link != '') {
					link.css('display', 'none');
				}
				//child.css('display', 'none');
				vars.totalSlides++;
			});

			//Set startSlide
			if (settings.startSlide > 0) {
				if (settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1;
				vars.currentSlide = settings.startSlide;
			}

			//Get initial image
			if ($(kids[vars.currentSlide]).is('img')) {
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}

			//Show initial link
			if ($(kids[vars.currentSlide]).is('a')) {
				$(kids[vars.currentSlide]).css('display', 'block');
			}

			//Set first background
			slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');

			//Add initial slices
			for (var i = 0; i < settings.slices; i++) {
				var sliceWidth = Math.round(slider.width() / settings.slices);
				if (i == settings.slices - 1) {
					slider.append(
						$('<div class="carousel-slice"></div>').css({ left: (sliceWidth * i) + 'px', width: (slider.width() - (sliceWidth * i)) + 'px' })
					);
				} else {
					slider.append(
						$('<div class="carousel-slice"></div>').css({ left: (sliceWidth * i) + 'px', width: sliceWidth + 'px' })
					);
				}
			}

			//Create caption
			slider.append(
				$('<div class="caption"><p></p></div>').css({ display: 'none', opacity: settings.captionOpacity })
			);
			//Process initial  caption
			if (vars.currentImage.attr('title') != '') {
				$('.caption p', slider).html(vars.currentImage.attr('title'));
				$('.caption', slider).slideDown(settings.animSpeed);
			}

			if (vars.currentImage.attr('alt') != '') {
				$('.caption p', slider).html(vars.currentImage.attr('alt'));
				$('.caption', slider).slideDown(settings.animSpeed);
			}

			//In the words of Super Mario "let's a go!"
			var timer = 0;
			if (!settings.manualAdvance && kids.length > 1) {
				timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime);
			}

			//Add Direction nav
			if (settings.directionNav) {
				slider.append('<div class="carousel-prevnext"><a class="carousel-nav-prev">Prev</a><a class="carousel-nav-next">Next</a></div>');

				//Hide Direction nav
				if (settings.directionNavHide) {
					$('carousel-prevnext', slider).hide();
					slider.hover(function () {
						$('.carousel-prevnext', slider).show();
					}, function () {
						$('.carousel-prevnext', slider).hide();
					});
				}

				$('a.carousel-nav-prev', slider).live('click', function () {
					if (vars.running) return false;
					clearInterval(timer);
					timer = '';
					vars.currentSlide -= 2;
					nivoRun(slider, kids, settings, 'prev');
				});

				$('a.carousel-nav-next', slider).live('click', function () {
					if (vars.running) return false;
					clearInterval(timer);
					timer = '';
					nivoRun(slider, kids, settings, 'next');
				});
			}

			//Add Control nav
			if (settings.controlNav) {
				var nivoControl = $('<div class="carousel-nav"></div>');
				slider.append(nivoControl);
				for (var i = 0; i < kids.length; i++) {
					var textCounter = i + 1;

					if (settings.controlNavThumbs) {

						var child = kids.eq(i);
						if (!child.is('img')) {
							child = child.find('img:first');
						}
						if (settings.controlNavThumbsFromRel) {
							nivoControl.append('<a class="carousel-nav-item" rel="' + i + '"><img src="' + child.attr('rel') + '" alt="" /></a>');
						} else {
							nivoControl.append('<a class="carousel-nav-item" rel="' + i + '"><img src="' + child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) + '" alt="" /></a>');
						}
					} else {
						nivoControl.append('<a class="carousel-nav-item" rel="' + i + '">' + textCounter + '</a>');
					}

				}
				//Set initial active link
				$('.carousel-nav a:eq(' + vars.currentSlide + ')', slider).addClass('active');

				$('.carousel-nav a', slider).live('click', function () {
					if (vars.running) return false;
					if ($(this).hasClass('active')) return false;
					clearInterval(timer);
					timer = '';
					slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
					vars.currentSlide = $(this).attr('rel') - 1;
					nivoRun(slider, kids, settings, 'control');
				});
			}

			//Keyboard Navigation
			if (settings.keyboardNav) {
				$(window).keypress(function (event) {
					//Left
					if (event.keyCode == '37') {
						if (vars.running) return false;
						clearInterval(timer);
						timer = '';
						vars.currentSlide -= 2;
						nivoRun(slider, kids, settings, 'prev');
					}
					//Right
					if (event.keyCode == '39') {
						if (vars.running) return false;
						clearInterval(timer);
						timer = '';
						nivoRun(slider, kids, settings, 'next');
					}
				});
			}

			//For pauseOnHover setting
			if (settings.pauseOnHover) {
				slider.hover(function () {
					vars.paused = true;
					clearInterval(timer);
					timer = '';
				}, function () {
					vars.paused = false;
					//Restart the timer
					if (timer == '' && !settings.manualAdvance) {
						timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime);
					}
				});
			}

			//Event when Animation finishes
			slider.bind('nivo:animFinished', function () {
				vars.running = false;
				//Hide child links
				$(kids).each(function () {
					if ($(this).is('a')) {
						$(this).css('display', 'none');
					}
				});
				//Show current link
				if ($(kids[vars.currentSlide]).is('a')) {
					$(kids[vars.currentSlide]).css('display', 'block');
				}
				//Restart the timer
				if (timer == '' && !vars.paused && !settings.manualAdvance) {
					timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime);
				}
				//Trigger the afterChange callback
				settings.afterChange.call(this);
			});
		});

		function nivoRun(slider, kids, settings, nudge) {
			//Get our vars
			var vars = slider.data('nivo:vars');
			if ((!vars || vars.stop) && !nudge) return false;

			if (vars.currentSlide + 1 == vars.totalSlides) {
				//return false; Stop looping
			}

			//Trigger the beforeChange callback
			settings.beforeChange.call(this);

			//Set current background before change
			if (!nudge) {
				slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
			} else {
				if (nudge == 'prev') {
					slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
				}
				if (nudge == 'next') {
					slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
				}
			}
			vars.currentSlide++;
			if (vars.currentSlide == vars.totalSlides) {
				vars.currentSlide = 0;
				//Trigger the slideshowEnd callback
				settings.slideshowEnd.call(this);
			}
			if (vars.currentSlide < 0) vars.currentSlide = (vars.totalSlides - 1);
			//Set vars.currentImage
			if ($(kids[vars.currentSlide]).is('img')) {
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}

			//Set acitve links
			if (settings.controlNav) {
				$('.carousel-nav a', slider).removeClass('active');
				$('.carousel-nav a:eq(' + vars.currentSlide + ')', slider).addClass('active');
			}

			//Process caption
			if (vars.currentImage.attr('title') != '' || vars.currentImage.attr('alt') != '') {
				if ($('.caption', slider).css('display') == 'block') {
					$('.caption', slider).slideUp(settings.animSpeed, function () {
						$(this).find("p").html(vars.currentImage.attr('title'));
						if (vars.currentImage.attr('alt') != '') {
							$(this).find("p").html(vars.currentImage.attr('alt'));
						}
						$(this).slideDown(settings.animSpeed);
					});
				} else {
					$('.caption p', slider).html(vars.currentImage.attr('title'));
				}
				$('.caption', slider).slideDown(settings.animSpeed);
			} else {
				$('.caption', slider).slideUp(settings.animSpeed);
			}

			//Set new slice backgrounds
			var i = 0;
			$('.carousel-slice', slider).each(function () {
				var sliceWidth = Math.round(slider.width() / settings.slices);
				$(this).css({ height: '0px', opacity: '0',
					background: 'url(' + vars.currentImage.attr('src') + ') no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
				});
				i++;
			});

			if (settings.effect == 'random') {
				var anims = new Array("sliceDownRight", "sliceDownLeft", "sliceUpRight", "sliceUpLeft", "sliceUpDown", "sliceUpDownLeft", "fold", "fade");
				vars.randAnim = anims[Math.floor(Math.random() * (anims.length + 1))];
				if (vars.randAnim == undefined) vars.randAnim = 'fade';
			}

			//Run random effect from specified set (eg: effect:'fold,fade')
			if (settings.effect.indexOf(',') != -1) {
				var anims = settings.effect.split(',');
				vars.randAnim = $.trim(anims[Math.floor(Math.random() * anims.length)]);
			}

			//Run effects
			vars.running = true;
			if (settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
				settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') {
				var timeBuff = 0;
				var i = 0;
				var slices = $('.carousel-slice', slider);
				if (settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.carousel-slice', slider).reverse();
				slices.each(function () {
					var slice = $(this);
					slice.css('top', '0px');
					if (i == settings.slices - 1) {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if (settings.effect == 'sliceUp' || settings.effect == 'sliceUpRight' || vars.randAnim == 'sliceUpRight' ||
					settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') {
				var timeBuff = 0;
				var i = 0;
				var slices = $('.carousel-slice', slider);
				if (settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') slices = $('.carousel-slice', slider).reverse();
				slices.each(function () {
					var slice = $(this);
					slice.css('bottom', '0px');
					if (i == settings.slices - 1) {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if (settings.effect == 'sliceUpDown' || settings.effect == 'sliceUpDownRight' || vars.randAnim == 'sliceUpDown' ||
					settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') {
				var timeBuff = 0;
				var i = 0;
				var v = 0;
				var slices = $('.carousel-slice', slider);
				if (settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') slices = $('.carousel-slice', slider).reverse();
				slices.each(function () {
					var slice = $(this);
					if (i == 0) {
						slice.css('top', '0px');
						i++;
					} else {
						slice.css('bottom', '0px');
						i = 0;
					}

					if (v == settings.slices - 1) {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function () {
							slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					v++;
				});
			}
			else if (settings.effect == 'fold' || vars.randAnim == 'fold') {
				var timeBuff = 0;
				var i = 0;
				$('.carousel-slice', slider).each(function () {
					var slice = $(this);
					var origWidth = slice.width();
					slice.css({ top: '0px', height: '100%', width: '0px' });
					if (i == settings.slices - 1) {
						setTimeout(function () {
							slice.animate({ width: origWidth, opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function () {
							slice.animate({ width: origWidth, opacity: '1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if (settings.effect == 'fade' || vars.randAnim == 'fade') {
				var i = 0;
				$('.carousel-slice', slider).each(function () {
					$(this).css('height', '100%');
					if (i == settings.slices - 1) {
						$(this).animate({ opacity: '1.0' }, (settings.animSpeed * 2), '', function () { slider.trigger('nivo:animFinished'); });
					} else {
						$(this).animate({ opacity: '1.0' }, (settings.animSpeed * 2));
					}
					i++;
				});
			}
		}
	};

	//Default settings
	$.fn.nivoSlider.defaults = {
		effect: 'random',
		slices: 15,
		animSpeed: 500,
		pauseTime: 3000,
		startSlide: 0,
		directionNav: true,
		directionNavHide: true,
		controlNav: true,
		controlNavThumbs: false,
		controlNavThumbsFromRel: false,
		controlNavThumbsSearch: '.jpg',
		controlNavThumbsReplace: '_thumb.jpg',
		keyboardNav: true,
		pauseOnHover: true,
		manualAdvance: false,
		captionOpacity: 0.8,
		beforeChange: function () { },
		afterChange: function () { },
		slideshowEnd: function () { }
	};

	$.fn.reverse = [].reverse;

})(jQuery);