/*
* Big shout out to the author Marco Kuiper (http://www.marcofolio.net/) - Thanks!
* Modified for Herbal Haven by Edd Temple-Smithson
*/

// 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 = [ {
		"image": "homepage-widget-bg1-optimised.png",
		"url" : "/shop/",
		"firstline": "<a id='secondline' href='/about/'>We are a nursery growing over <span>150 varieties</span> of culinary and medicinal herbs... find out more!</a>"
	}, {
	    "image": "homepage-widget-bg5-optimised.png",
		"url" : "/journal/",
		"firstline": "<a id='secondline' href='/journal/'>Browse through <span>Our Journal</span> for recipe ideas, useful articles and growing tips... find out more!</a>"
	}, {
	    "image": "homepage-widget-bg3-optimised.png",
		"url" : "/find-us/",
		"firstline": "<a id='secondline' href='/find-us/'>We are a small nursery located in the <span>North West Essex</span> countryside... find out more!</a>"
	}, {
	    "image": "homepage-widget-bg4-optimised.png",
		"url" : "/gallery/",
		"firstline": "<a id='secondline' href='/gallery/'>Check out <span>Our Gallery</span> for pictures of the nursery, the herbs and the markets... find out more!</a>"
	}
];



$(document).ready(function() {
		
	// 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(images/btn_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 = -1;
	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(images/" + photoObject.image + ")",
			"display" : "block",
			"z-index" : currentZindex
		});
		
		// Hide the header text
		//$("#headertxt").css({"display" : "none"});
		$("#headertxt").fadeOut(function() {
            // Set the new header text
		    $("#firstline").html(photoObject.firstline);
		    $("#secondline").attr("href", photoObject.url);
		    Cufon.replace('#firstline', { textShadow: '1px 1px #000' });
		});

		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {
				//$("#headertxt").css({"display" : "block"});
				$("#headertxt").fadeIn();
                animating = false;
			}, 200);
		});
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		$("#control").css({ "background-image" : "url(images/btn_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);
	
});