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

// Speed of the automatic slideshow
var slideshowSpeed = 5000;

// Variable to store the images we need to set as background
// which also includes some text and url's.
var photos = [ {
		"image" : "bigbg4.jpg",
		"firstline" : "Ocena restauracji \"Moonsfera\"",
		"secondline" : "Dodana 14.02.2012",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg3.jpg",
		"firstline" : "Recenzja filmu \"Rzeź\"",
		"secondline" : "Dodana 10.02.2012",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg1.jpg",
		"firstline" : "Recenzja filmu \"In Time\"",
		"secondline" : "Dodana 18.12.2011",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg5.jpg",
		"firstline" : "Odkryte portfolio",
		"secondline" : "Dodany 29.11.2011",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg6.jpg",
		"firstline" : "Nowe zdjęcia z Turcji",
		"secondline" : "Dodany 29.11.2011",
		"url" : "http://ciebiera.eu/turcja/index.html",
		"title" : "Fotach z Turcji"
	}, {
		"image" : "bigbg7.jpg",
		"firstline" : "Przepis na zupę śródziemnomorską",
		"secondline" : "Dodany 24.11.2011",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg10.jpg",
		"firstline" : "Recenzja filmu \"Listy do M.\"",
		"secondline" : "Dodana 20.11.2011",
		"url" : "http://ciebiera.eu/blog.html",
		"title" : "BLOGU"
	}, {
		"image" : "bigbg11.jpg",
		"firstline" : ""
	}, {
		"image" : "bigbg12.jpg",
		"firstline" : ""
	}, {
		"image" : "bigbg13.jpg",
		"firstline" : ""
	}, {
		"image" : "bigbg14.jpg",
		"firstline" : ""
	}, {
		"image" : "bigbg15.jpg",
		"firstline" : ""
	}
];



$(document).ready(function() {
	var isPause;
	// Backwards navigation
	$("#back").click(function() {
		stopAnimation();
		navigate("back");
	});
	
	// Forward navigation
	$("#next").click(function() {
		stopAnimation();
		navigate("next");
	});
	
	var interval;
	$("#control").click(function(){
		if (isPause) {
			stopAnimation();
			if(screen.width <= '1900') {
				$(this).css({ "background-image" : "url(smallimages/btn_pause.png)" });
			} else {
				$(this).css({ "background-image" : "url(images/btn_pause.png)" });
			}
			navigate("next");
			interval = setInterval(function() {
				navigate("next");
			}, slideshowSpeed);	
			isPause	= false;
		} else {
			stopAnimation();
		}
	});
	
	
	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
		if(screen.width <= '1900') {
			$("#headerimg" + activeContainer).css({
				"background-image" : "url(smallimages/" + photoObject.image + ")",
				"display" : "block",
				"z-index" : currentZindex
			});
		} else {
			$("#headerimg" + activeContainer).css({
				"background-image" : "url(images/" + photoObject.image + ")",
				"display" : "block",
				"z-index" : currentZindex
			});	
		};
		
		
		// Hide the header text
		$("#headertxt").css({"display" : "none"});
		// Set the new header text
		$("#firstline").html(photoObject.firstline);
		$("#secondline").html(photoObject.secondline);
		$("#pictureduri").attr("href", photoObject.url);
		$("#pictureduri").html(photoObject.title);
		
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {
				if ($("#firstline").text() == "") {
					$("#headertxt").css({"display" : "none"});				
				} else {
					$("#headertxt").css({"display" : "block"});
				}
				animating = false;
			}, 500);
		});
	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
		if(screen.width <= '1900') {
			$("#control").css({ "background-image" : "url(smallimages/btn_play.png)" });
		} else {
			$("#control").css({ "background-image" : "url(images/btn_play.png)" });
		}
		// Clear the interval
		clearInterval(interval);
		
		isPause = true;
	};
	
	// We should statically set the first image
	navigate("next");
	isPause = false;
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);
	
});