function easeInOut(minValue,maxValue,totalSteps,actualStep,powr) {
    var delta = maxValue - minValue;
    var stepp = minValue+(Math.pow(((1 / totalSteps)*actualStep),powr)*delta);
    return Math.ceil(stepp)
}

function doBGFade(elem,startRGB,endRGB,finalColor,steps,intervals,powr) {
    if (elem.bgFadeInt) window.clearInterval(elem.bgFadeInt);
    var actStep = 0;
    elem.bgFadeInt = window.setInterval(
        function() {
                elem.css("backgroundColor", "rgb("+
                        easeInOut(startRGB[0],endRGB[0],steps,actStep,powr)+","+
                        easeInOut(startRGB[1],endRGB[1],steps,actStep,powr)+","+
                        easeInOut(startRGB[2],endRGB[2],steps,actStep,powr)+")"
                );
                actStep++;
                if (actStep > steps) {
                elem.css("backgroundColor", finalColor);
                window.clearInterval(elem.bgFadeInt);
                }
        }
        ,intervals)
}

function addDropdownJumpbox(){
	$('select[name=categories]').change(function(i) { 
          window.location = $(this).val();
      });
}

function addCartStuff(){
	$("a.addcart").click(function(event){
		var id = this.id;
    $("#cart_link_"+id).empty().html('<img src="/media/images/ajax-loader.gif">');
		$.post("/shop/cart/ajax_add_to_cart/",{ picture_id : id}, function(data){
			if(data.success){
			  $("#cart_count").html("Lightbox "+data.cart_count);
			  $("#cart_link_"+id).html("Added to <strong><a href=\"/shop/cart/\" class=\"small blue awesome\">Lightbox</a></strong>");
			}
		}, "json");
		event.preventDefault();
	});
}

function jumpTo(){
	$("#jumpto").change(function () {
  		document.location.href = '/gallery/?page=' + $(this).val();
  	});
}

function search_jumpTo(){
	$(".search_jumpto").change(function () {
  		document.location.href = '/search/?page=' + $(this).val();
  	});
}

function slider() {
 
	//Set Default State of each portfolio piece
	$(".paging").show();
	$(".paging a:first").addClass("active");
		
	//Get size of images, how many there are, then determin the size of the image reel.
	var imageWidth = $(".window").width();
	var imageSum = $(".image_reel img").size();
	var imageReelWidth = imageWidth * imageSum;
	
	//Adjust the image reel to its new size
	$(".image_reel").css({'width' : imageReelWidth});
	
	//Paging + Slider Function
	rotate = function(){	
		var triggerID = $active.attr("rel") - 1; //Get number of times to slide
		var image_reelPosition = triggerID * imageWidth; //Determines the distance the image reel needs to slide
 
		$(".paging a").removeClass('active'); //Remove all active class
		$active.addClass('active'); //Add active class (the $active is declared in the rotateSwitch function)
		
		//Slider Animation
		$(".image_reel").animate({ 
			left: -image_reelPosition
		}, 500 );
		
	}; 
	
	//Rotation + Timing Event
	rotateSwitch = function(){		
		play = setInterval(function(){ //Set timer - this will repeat itself every 3 seconds
			$active = $('.paging a.active').next();
			if ( $active.length === 0) { //If paging reaches the end...
				$active = $('.paging a:first'); //go back to first
			}
			rotate(); //Trigger the paging and slider function
		}, 7000); //Timer speed in milliseconds (3 seconds)
	};
	
	rotateSwitch(); //Run function on launch
	
	//On Hover
	$(".image_reel a").hover(function() {
		clearInterval(play); //Stop the rotation
	}, function() {
		rotateSwitch(); //Resume rotation
	});	
	
	//On Click
	$(".paging a").click(function() {	
		$active = $(this); //Activate the clicked paging
		//Reset Timer
		clearInterval(play); //Stop the rotation
		rotate(); //Trigger rotation immediately
		rotateSwitch(); // Resume rotation
		return false; //Prevent browser jump to link anchor
	});	
	
}

$(document).ready(function() {
	slider();
	addCartStuff();
	jumpTo(); search_jumpTo();
});