/*
* Author:      Marco Kuiper (http://www.marcofolio.net/)
*/

// Speed of the automatic slideshow
var slideshowSpeed = 6000;

// Variable to store the images we need to set as background
// which also includes some text and url's.
var photos = [ {
		"ptext" : "The UK's best two-part e-cigarette. Saving 20 a day smokers £1860 a year or more.",
		"image" : "slider-1.jpg",
		"url" : "http://www.ecigarettedirect.co.uk/products/halo-electronic-cigarette.html",
		"firstline" : "The Smoker's ",
		"secondline" : "HALO E-Cigarette",
		"linkText" : "View Product"
	}, {
		"ptext" : "Dr Nitzkin, Chair of the Tobacco Control Task Force for the American Association of Public Health Physicians, says e-cigs are more than 99% safer than tobacco cigarettes.",
		"image" : "slider-2.jpg",
		"url" : "http://www.ecigarettedirect.co.uk/extra%20info/health-and-safety.html",
		"firstline" : "Experts say it's up to 99%",
		"secondline" : "Healthier than Smoking",
		"linkText" : "Read more info"
	}, {
		"ptext" : ""There was the kick I had been craving; there was the feeling of something in my hand; there was the \'smoke\' that danced from my mouth like a frozen whisper"",
		"image" : "slider-3.jpg",
		"url" : "http://www.ecigarettedirect.co.uk/products/halo-electronic-cigarette.html",
		"firstline" : "Senior Editor, Sur La Terre",
		"secondline" : "Steven Paugh",
		"linkText" : "View Product"
	}, {
		"ptext" : "One of our e-cigarettes being used in a Welsh National Opera production of Carmen.",
		"image" : "slider-4.jpg",
		"url" : "http://www.ecigarettedirect.co.uk/products/halo-electronic-cigarette.html",
		"firstline" : "Use anywhere:",
		"secondline" : "In the pub - or on stage!",
		"linkText" : "View Product"
	}, {
		"ptext" : "But don't take our word for it: Click below for customer comments, pics and videos.",
		"image" : "slider-5.jpg",
		"url" : "http://www.ecigarettedirect.co.uk/testimonials/testimonial%201.html",
		"firstline" : "Users love",
		"secondline" : "the smoker's HALO",
		"linkText" : "WHAT PEOPLE SAY"
	}
];

$(document).ready(function() {
	// rollover functions
	$("#back").hover(function() {
		$(this).css({ "background-image" : "url(slideshow/icon-big-back-yellow.png)" });
	});
	$("#back").mouseleave(function() {
		$(this).css({ "background-image" : "url(slideshow/icon-big-back.png)" });
	});
	$("#next").hover(function() {
		$(this).css({ "background-image" : "url(slideshow/icon-big-next-yellow.png)" });
	});
	$("#next").mouseleave(function() {
		$(this).css({ "background-image" : "url(slideshow/icon-big-next.png)" });
	});	
	$("#control").hover(function() {
		$(this).css({ "background-image" : "url(slideshow/icon-big-pause-yellow.png)" });
	});
	$("#control").mouseleave(function() {
			$(this).css({ "background-image" : "url(slideshow/icon-big-pause.png)" });
		});
	// Backwards navigation
	$("#back").click(function() {
		stopAnimation();
		navigate("back");
	});
	
	// Forward navigation
	$("#next").click(function() {
		stopAnimation();
		navigate("next");
	});
	
	var interval;
	$("#control").toggle(function(){
		stopAnimation();
	}, function() {
		// Change the background image to "pause"
		$(this).css({ "background-image" : "url(slideshow/icon-big-pause.png)" });
		$("#control").hover(function() {
			$(this).css({ "background-image" : "url(slideshow/icon-big-pause-yellow.png)" });
		});
		$("#control").mouseleave(function() {
			$(this).css({ "background-image" : "url(slideshow/icon-big-pause.png)" });
		});
		// Show the next image
		navigate("next");
		
		// Start playing the animation
		interval = setInterval(function() {
			navigate("next");
		}, slideshowSpeed);
		
	});
	
	var activeContainer = 1;	
	var currentImg = 0;
	var animating = false;
	


	var navigate = function(direction) {
		// Check if no animation is running. If it is, prevent the action
		if(animating) {
			return;
		}
		
		// Check which current image we need to show
		if(direction == "next") {
			currentImg++;
			if(currentImg == photos.length + 1) {
				currentImg = 1;
			}
		} else {
			currentImg--;
			if(currentImg == 0) {
				currentImg = photos.length;
			}
		}
		
		// Check which container we need to use
		var currentContainer = activeContainer;
		if(activeContainer == 1) {
			activeContainer = 2;
		} else {
			activeContainer = 1;
		}
		showImage(photos[currentImg - 1], currentContainer, activeContainer);
	};
	
	var currentZindex = 100;
	var showImage = function(photoObject, currentContainer, activeContainer) {
		animating = true;
		
		// Make sure the new container is always on the background
		currentZindex--;
		
		// Set the background image of the new active container
		$("#headerimg" + activeContainer).css({
			"background-image" : "url(slideshow/" + photoObject.image + ")",
			"background-color" : "#FFF",
			"display" : "block",
			"margin" : "0 auto",
			"z-index" : 999
		});
		
		// Hide the header text
		$("#headertxt").css({"display" : "none"});

		// Set the new header text
		$("#firstline").html(photoObject.firstline);
		$("#secondline")
			.html(photoObject.secondline);
		$(".hyperwhite")
			.attr("href", photoObject.url)
			.html(photoObject.linkText);
		$(".paraText").html(photoObject.ptext);
		
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {
				$("#headertxt").css({"display" : "block"});
				animating = false;
			}, 500);
		});
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		
		$("#control").css({ "background-image" : "url(slideshow/icon-big-play.png)" });
		
		$("#control").hover(function() {
			$(this).css({ "background-image" : "url(slideshow/icon-big-play-yellow.png)" });
		});
		
		$("#control").mouseleave(function() {
			$(this).css({ "background-image" : "url(slideshow/icon-big-play.png)" });
		});
		// Clear the interval
		clearInterval(interval);
	};
	
	// We should statically set the first image
	navigate("next");
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);
});