$(document).ready(function(){

  	//this is what allows a product to be draggable.
	$(".pbimage").draggable({
		opacity: 0.5,
		helper: 'clone'
	});
		$(".drop").droppable({
		accept: ".draggablediv",
		activeClass: 'droppable-active',
		tolerance: 'touch',
		over: function() {
			$("#shoppingcarticon").fadeTo("fast", 0.6);
		},
		out: function() {
			$("#shoppingcarticon").fadeTo("fast", 1);
		},
		drop: function(ev, ui) {
			dropProduct( ev, ui );
		}
	});
	
	// custom fields that we may need to set
	if ( $( "#neucart_cart_value_custom" ).length ) 
	{
		if ( $( "#carttotal" ).length )
			$( "#neucart_cart_value_custom" ).text( $( "#carttotal" ).text() );
		else
			custom_carttotal_absent();
	}
		
	// custom fields that we may need to set
	if ( $( "#neucart_cart_qty_custom" ).length ) 
	{
		if ( $( "#cartqty" ).length )
			$( "#neucart_cart_qty_custom" ).text( $( "#cartqty" ).text() );
		else
			custom_cartqty_absent();
	}
	
	custom_neucart_pageload();
  });
  
function detailsClicked( cartkey ) {
	var elemId = "#celldetails" + cartkey;
	var showHideId = "#showhide" + cartkey;
	var expand = $( elemId ).html() == "";
	var detailText = expand ? $( elemId ).attr( "dtext" ) : "";
	$( elemId ).html( detailText );
	$( showHideId ).html( expand ? neucart_hide_details : neucart_show_details );
}
  
function checkoutQuantityChange( cartkey, count ) {
	$.get( "includes/ajax/updatecart.php", {
		sid: "", 
		action: 'chk_change_quantity', 
		id: cartkey, 
		quantity: count },
		function ( data ) {			
			if ( data == "false" )
				return false;
		
			// cart price, item total
			var qpk = data.split( "|" );
			$( "#summary_carttotal" ).text( qpk[ 0 ] );
			var itemtotal = qpk[ 1 ];
			$( "#totalprice_" + cartkey ).text( neucart_currency_symbol + itemtotal );			
		}
	);
	
	return true;
}
  
function checkoutSpecInstrChange( cartkey, instructions ) {
	$.get( "includes/ajax/updatecart.php", { 
		sid: "", 
		action: 'chk_change_spec_inst', 
		id: cartkey, 
		inst: instructions } 
	);
}

function checkoutCartMemoChange( instructions ) {
	$.get( "includes/ajax/updatecart.php", { 
		sid: "", 
		action: 'chk_change_cart_memo', 
		inst: instructions } 
	);
}

function checkoutOptionChanged( itemkey, optionkey, optionvalue ) {
	$.get( "includes/ajax/updatecart.php", {
		sid: "", 
		action: "chk_option_changed",
		id: itemkey,
		op: optionkey,
		val: optionvalue
		}, function ( data ) {
			
			// it is blank when the price of the options didn't change.
			if ( data == "" )
				return;
		
			var arr = data.split( "|" );
			var iprice = prettifyNumber( arr[ 0 ] );
			var tprice = prettifyNumber( arr[ 1 ] );
			var cprice = prettifyNumber( arr[ 2 ] );
			$( "#unitprice_" + itemkey ).text( neucart_currency_symbol + iprice );
			$( "#totalprice_" + itemkey).text( neucart_currency_symbol + tprice );
			$( "#summary_carttotal" ).text( cprice );
		}
	);
}  

// this function is called from drag/drop. the product is being "dropped"
// into the cart. this calls "add product", which actually adds the item
// into memory and the ui cart
function dropProduct( ev, ui ) {
	productid = ui.draggable.attr("p_id");
	productsku = ui.draggable.attr("p_sku");
	productname = ui.draggable.attr("p_name");
	productprice = ui.draggable.attr("p_price");
	productInstructionLabel = ui.draggable.attr("p_specInstrLabel");
	addProduct( ev, ui, productid, productname, productprice, productsku, productInstructionLabel, "", null );
}

// it would appear that "ev" is never used.
// this function is called directly from the "add to cart" link
// on the product detail page. also called from function above.
function addProduct(ev, ui, productid, productname, productprice, productsku, productInstructionLabel, productInstrInstr, productOptions ) {  	  	
	productqty = 1;
	
	if ( productOptions == null )
		productOptions = "";
	else
	{
		// create a pipe-sep string with key:value items between pipes
		var optns = "";
		for ( var id in productOptions )
			optns = optns.concat( id, ":", productOptions[ id ], "|" );
		productOptions = optns;
	}
	
	if ( productInstructionLabel == null )
		productInstructionLabel = "";
	if ( productInstrInstr == null )
		productInstrInstr = "";	

	var topOrig = showWorking( neucart_adding_product );
	var atc_link = document.getElementById( 'atc_link_' + productid );
	var linkOrig = showWorkingLink( atc_link );
		
	$.get( "includes/ajax/updatecart.php", { 
		sid: "",
		action: "addproduct",
		id: productid,
		name: productname,
		price: productprice,
		sku: productsku,
		options: productOptions,
		specname: productInstructionLabel,
		specinst: productInstrInstr }, 
		function( data ) {
			// the function echos "false" string or "quantity|total|cartguid|unitprice".
			if ( data == "false" ) {
				restoreCart( topOrig );
				restoreLink( linkOrig, atc_link );
				return;
			}
			
			// quantity, price, key (unique key used to store items in cart)
			var qpk = data.split( "|" );
			$( "#cartqty" ).text( qpk[ 0 ] );
			$("#carttotal").text( qpk[ 1 ] );
			var cartkey = qpk[ 2 ];
			productprice = qpk[ 3 ];
			
			// if there are custom cart fields, update those.
			update_custom_totals( qpk[ 0 ], qpk[ 1 ] );
			
			var elemId = "#ddcproduct" + cartkey;
			
			// if the item exists, increase the quantity. otherwise,
			// add to the list.
			if ( $(elemId).text() != "" )
			{
				// increase the quantity. update the attribute AND
				// update the text
				var newQty = parseFloat( $( elemId ).attr( "qty" ) ) + 1;
				$( elemId ).attr( "qty", newQty );
				$( elemId + " > #cell2").html( newQty );
			}
			else			
			{			
				$.get( "includes/ajax/updatecart.php", { 
					sid: "",
					action: "get_options_name",
					id: cartkey },
					function( rslt ) {
						//add a new row.
						elemId = elemId.replace( "#", "" );
						
						var detailsText = "";
						
						if ( rslt != "" )
						{
							detailsText = 
								"<br>[" +
								'<a href="javascript:void(0);"' +
								' onclick="detailsClicked( \'' + cartkey + '\' );"' +
								' id="showhide' + cartkey + '"' +
								'>' + neucart_show_details + '</a>]' +
								'<div id="celldetails' + cartkey +
								'" dtext="' + rslt + 
								'"></div>';
						}
						
						var newrowtext =
							'<div id="' + elemId +
							'" class="reglistrow' +
							'" productname="' + productname +
							'" qty="' + productqty +
							'" price="' + productprice +
							'"><div id="cell0"><a href="javascript:void(0);' +
							'" onclick="removeProduct(\'' + cartkey + '\')">' +
							'<img src="assets/images/remove.png' +
							'" title="' + neucart_decrease_quantity + '" border="0" /></a>' +
							' <a href="javascript:void(0);" onclick=' +
							'"increaseQty( \'' + cartkey + "|" + productprice + 
							'\' )"><img src="assets/images/add.gif" title=' +
							'"' + neucart_increase_quantity + '" border="0"></a>' +
							'</div>' +
							'<div id="cell1"><a href="productdetail.php?product=' + 
							productid + '" class="summarylink">' +
							productname + '</a>' + detailsText + '</div>' +
							'<div id="cell2">' + productqty + '</div>' +
							'<div id="cell3">' + neucart_currency_symbol + 
							prettifyNumber( productprice ) + 
							'</div>' +
							'<div class="clear"></div>' +
							'</div>';
							$( "#listitems" ).prepend( newrowtext );
					}
				);					
			}
			
		restoreCart( topOrig );
		restoreLink( linkOrig, atc_link );
		
		}
	);
}

function vote_for_review( isHelpful, id ) {
	isHelpful = isHelpful ? 1 : 0;
	$.get( "includes/ajax/cust_review.php", { 
		sid: "",
		action: "vote_for_review",
		id: id,
		helpful: isHelpful }
	);
	
	$( "#helpful_review_" + id ).fadeOut( 100, function() {
		document.getElementById( 'helpful_review_' + id ).innerHTML = neucart_thanks_for_review;
		
		// update the counts to show the customer just reviewed. it's AJAX so we don't really know if 
		// the update occurred (and it may fail if this is from an IP address that already voted)
		// but just update this anyway without returning a result. it's not critical.
		cur_val = document.getElementById( 'number_of_helpful_' + id ).innerHTML;
		document.getElementById( 'number_of_helpful_' + id ).innerHTML = parseInt( cur_val ) + isHelpful;
		
		cur_val = document.getElementById( 'number_of_total_' + id ).innerHTML;
		document.getElementById( 'number_of_total_' + id ).innerHTML = parseInt( cur_val ) + 1;
		
		$( "#helpful_review_" + id ).fadeIn( 400 );
	});
}

function submit_review( showImmediately, prodid ) {

	stars = document.getElementById( 'review_stars' ).value;
	title = document.getElementById( 'review_title' ).value;
	text =  document.getElementById( 'review_text' ).value;
	name =  document.getElementById( 'reviewer_name' ).value;
	loca =  document.getElementById( 'reviewer_location' ).value;
	crid =  'new';
	
	if ( jQuery.trim( title ).length == 0 ) {
		alert( neucart_review_blank_title );
		return;
	}
	
	if ( jQuery.trim( text ).length == 0 ) {
		alert( neucart_review_blank_text );
		return;
	}
	
	if ( jQuery.trim( name ).length == 0 ) {
		alert( neucart_review_blank_name );
		return;
	}
	
	if ( jQuery.trim( loca ).length  == 0 ) {
		alert( neucart_review_blank_loca );
		return;
	}
	
	if ( document.getElementById( 'edit_your_review' ) != null )
		crid = $( "#edit_your_review" ).attr( 'crid' );
	
	$.get( "includes/ajax/cust_review.php", {
		sid: "",
		action: "submit_review",
		pid: prodid,
		rstars: stars,
		rtitle: title,
		rtext: text,
		rname: name,
		rloca: loca,
		revid: crid }
	);
	
	$( "#your_review" ).fadeOut( 300, function() {
		$( "#your_review_submitted" ).fadeIn( 400 );
		$( "#your_review" ).remove();
	});
}

function update_custom_totals( qty, total ) {
	// if these fields exist, update them. this is for customers who
	// have added custom fields on their pages that must be updated
	if ( document.getElementById( 'neucart_cart_value_custom' ) != null )
		$( "#neucart_cart_value_custom" ).text( total );
		
	if ( document.getElementById( 'neucart_cart_qty_custom' ) != null )
		$( "#neucart_cart_qty_custom" ).text( qty );
}

function showWorking( text ) {
	var topRow = "#toplistrow";
	var orig = $( topRow ).html();
	var newHtml = '<div style="text-align:center; margin: 0 3px 0 3px; padding:2px">' + text + '</div>';	
	$( topRow ).html( newHtml );
	$( topRow ).css( "background", "yellow" );
	return orig;
}

function showWorkingLink( atc_link ) {
	if ( atc_link == null )
		return null;

	atc_orig = atc_link.innerHTML;
	atc_link.innerHTML = neucart_adding_product;
	return atc_orig;
}

function restoreLink( text, atc_link ) {
	if ( atc_link == null )
		return;
		
	$( atc_link ).fadeTo( 500, 0, function() {
		$( atc_link ).html( neucart_click_to_add_another );
		$( atc_link ).fadeTo( 500, 1 );		
	} );

}

function restoreCart( topRowOrigText ) {
	$("#addhowto").css( "display", "none");
	$("#parentlist").css( "display", "none");
	$("#parentlist").fadeIn( "fast" );
	$("#shoppingcarticon").fadeTo( "fast", 1 );
	$( "#toplistrow" ).css( "background", "#ccc" );
	$( "#toplistrow" ).html( topRowOrigText );
}

function prettifyNumber( number ) {
	var splits = number.split( '.' );
	var digits = splits[ 0 ];
	
	if ( digits.length > 3 )
	{
		var thou = digits.substr( 0, digits.length - 3 )
		digits = thou.concat( ",", digits.substr( digits.length - 3 ) );
	}
	
	if ( splits.length > 1 )
		return digits.concat( ".", splits[ 1 ] );
	else
		return digits.concat( ".", "00" );
}
  
function increaseQty( product ) {
	prodparts = product.split( "|" );
	cartkey = prodparts[ 0 ];
	
	var topOrig = showWorking( neucart_increasing_quantity );
	
	$.get( "includes/ajax/updatecart.php", {
		sid: "",
		action: "quantity_increase",
		key: cartkey },
		function( data ) {
			if ( data == "false" ) {
				restoreCart( topOrig );
				return;
			}
				
			// quantity, price, key... returned from func
			var qpk = data.split( "|" );
			$( "#cartqty" ).text( qpk[ 0 ] );
			$("#carttotal").text( qpk[ 1 ] );
			
			// if there are custom cart fields, update those.
			update_custom_totals( qpk[ 0 ], qpk[ 1 ] );
			
			var newQty = qpk[ 2 ];
			
			// increase the quantity. update the attribute AND
			// update the text
			var elemId = "#ddcproduct" + cartkey;
			$( elemId ).attr( "qty", newQty );
			$( elemId + " > #cell2").html( newQty );  
			
			restoreCart( topOrig );			
		}
	);
}

function removeProduct( productid ) {

	var topOrig = showWorking( neucart_decreasing_quantity );

	$.get( "includes/ajax/updatecart.php", {
		sid: "",
		action: "quantity_decrease",
		key: productid },
		function( data ) {
			if ( data == "false" ) {
				restoreCart( topOrig );	
				return;
			}
				
			// quantity, price, key... returned from func
			var qpk = data.split( "|" );
			$( "#cartqty" ).text( qpk[ 0 ] );
			$("#carttotal").text( qpk[ 1 ] );
			
			// if there are custom cart fields, update those.
			update_custom_totals( qpk[ 0 ], qpk[ 1 ] );
			
			var newQty = qpk[ 2 ];
			
			var elemId = "#ddcproduct" + productid;
			
			if ( newQty > 0 )
			{
				// decrease the quantity. update the attribute AND
				// update the text
				$( elemId ).attr( "qty", newQty );
				$( elemId + " > #cell2").html( newQty );  			
			}
			else
			{
				// disable the link and then
				// remove altogether.
				$( elemId + " > #cell0 > a").attr( 'onclick', '' );
				$( elemId ).fadeOut( 500, function() {
					$( elemId ).remove(); 
					
					if ( qpk[ 0 ] == 0 )
						$( "#addhowto" ).fadeIn( "fast" );
				} 
				);						
			}
			
			restoreCart( topOrig );	
		}
	);
}

function emptyCart(){
	if ( !confirm( neucart_empty_cart_confirm ) )
		return;
		
	var topOrig = showWorking( neucart_emptying_cart );
	
	$.get( "includes/ajax/updatecart.php", {
		sid: "",
		action: "empty_cart" },
		function( data ) {
			if ( data == "false" ) {
				restoreCart( topOrig );	
				return;
			}
				
			// array of items
			var arr = data.split( "|" );
			
			for ( i = 0; i < arr.length; i++ )
			{	
				// disable the link and then
				// remove altogether.
				var elemId = "#ddcproduct" + arr[ i ];
				$( elemId + " > #cell0 > a").attr( 'onclick', '' );
				$( elemId ).fadeOut( 500, function() {
					$( elemId ).remove(); 
				} 
				);						
			}
			
			$( "#cartqty" ).text( 0 );
			$("#carttotal").text( neucart_currency_symbol + "0.00" );
			restoreCart( topOrig );	
			$( "#addhowto" ).fadeIn( "fast" );
			
			// if there are custom cart fields, update those.
			update_custom_totals( 0, neucart_currency_symbol + "0.00" );
		}
	);
}