var CSA = {
	tileInstanceNum: 	1,
	maxTileInstanceNum:	4,
	numOfTiles: 		5,
	tileImgDir: 		false,
	tileImgExt: 		'.jpg',
	init: 				function()
	{
		CSA.loadLocationData();
		CSA.setTileImgDir();
		CSA.replaceTiles();
	},
	loadLocationData: 		function()
	{
		var locationData	= [];
		
		$('#locations .vcard').each(function(){
			locationData.push({
								title: 		$(this).find('.org').text(),
								address: 	$(this).find('.adr').text(),
								latitude: 	$(this).find('.latitude').text(),
								longitude: 	$(this).find('.longitude').text()
							});
		});
		
		CSA.drawLocationMap(locationData);
	},
	drawLocationMap: 		function(locationData)
	{
		if (locationData.length == 0){
			return false;
		}
		
		var points			= [];
		var markers			= [];
		var bounds 			= new google.maps.LatLngBounds();
		var geocoder		= new google.maps.Geocoder();
		var latLng;
		
		for (var a in locationData){
			latLng	= new google.maps.LatLng(locationData[a].latitude, locationData[a].longitude);
			//new CSA.geocodeAddress(geocoder, locationData[a].address);//
			
			points.push( latLng );
			bounds.extend( latLng );
		}
		
		
		var myOptions = {
		  zoom: CSA.calcZoomVal(bounds),//15
		  center: bounds.getCenter(),
		  mapTypeId: google.maps.MapTypeId.ROADMAP
		};
		var map = new google.maps.Map(document.getElementById("map-holder"), myOptions);
		
		// Draw markers for each location
		for (var a in points){
			var contentString = '<div>'+
			    '<div id="siteNotice">'+
			    '</div>'+
			    '<h3 id="firstHeading" class="firstHeading">'+locationData[a].title+'</h3>'+
			    '<div id="bodyContent">'+
				'<p>'+locationData[a].address+'</p>'+
			    '</div>'+
			    '</div>';
			
			
			var image = new google.maps.MarkerImage('/wp-content/themes/csa/images/markers/'+(parseInt(a)+1)+'.png',
			      // This marker is 20 pixels wide by 32 pixels tall.
			      new google.maps.Size(22, 36),
			      // The origin for this image is 0,0.
			      new google.maps.Point(0,0),
			      // The anchor for this image is the base of the flagpole at 0,32.
			      new google.maps.Point(0, 32));
			  var shadow = new google.maps.MarkerImage('/wp-content/themes/csa/images/markers/shadow.png',
			      // The shadow image is larger in the horizontal dimension
			      // while the position and offset are the same as for the main image.
			      new google.maps.Size(35, 22),
			      new google.maps.Point(0,0),
			      new google.maps.Point(0, 18));
			      
			
			markers[a] = new google.maps.Marker({
					position: points[a], 
					map: map,
					title:locationData[a].title,
					
					icon: image,
					shadow: shadow
			  });
			
			CSA.createInfoWindow(map,markers[a],contentString);
			
		}
	},
	geocodeAddress: 		function(geocoder,address)
	{
		if (geocoder){
			geocoder.geocode( {'address': address}, function(results, status){
				if (status == google.maps.GeocoderStatus.OK) {
				
					alert(address+" coords "+results[0].geometry.location.toString() );
					
				
					return results[0].geometry.location;
				} else {
					alert("Geocode was not successful for the following reason: " + status);
					return false;
				}
			});
		}
		return false;
	},
	createInfoWindow: 		function(map,marker,contentString)
	{
		var infoWindow = new google.maps.InfoWindow({
		    content: contentString
		});
		google.maps.event.addListener(marker, 'click', function() {
			infoWindow.open(map,marker);
		});
	},
	calcZoomVal: 			function(bounds)
	{
		if (bounds.isEmpty()){
			return 1;
		}
		
		var maxZoomLevel	= 15;
		var maxLatLong 		= bounds.getNorthEast();
		var minLatLong 		= bounds.getSouthWest();
		var latDiff			= maxLatLong.lat() - minLatLong.lat();
		var longDiff		= maxLatLong.lng() - minLatLong.lng();
		var diff			= Math.max(latDiff,longDiff);
		
		var	maxDiff			= (diff == latDiff) ? 180 : 360;
		
		var ratio			= (diff / maxDiff);
		
		var zoomLevel		= Math.ceil( Math.abs ( CSA.custLog(ratio,10) * 4) * 0.85);
		
		return Math.min(zoomLevel, maxZoomLevel);
	},
	custLog: 				function(x,base)
	{
		// Created 1997 by Brian Risk.  http://brianrisk.com
		return (Math.log(x))/(Math.log(base));
	},
	setTileImgDir: 			function()
	{
		var src = $('.tiles .tile-1').attr('src');
		if (! src){
			return false;
		}
		
		CSA.tileImgDir	= src.replace( '/1/' + CSA.tileInstanceNum + CSA.tileImgExt, '');
	},
	replaceTiles: 			function()
	{
		if (! CSA.tileImgDir){
			return false;
		}
		
		for (var a = 1; a <= CSA.numOfTiles; a++){
			var src = CSA.tileImgDir + "/" + a + "/" + CSA.tileInstanceNum + CSA.tileImgExt;
			
			$('<img />')
			    .attr('src', src)
				.attr('class', 'new tile tile-'+a)
				.attr('style', 'display:none')
			    .load(function(){
			        $('div.tiles').append( $(this) );
					$(this).fadeIn();
			    });
		}
		
		if (CSA.tileInstanceNum > 1){ // to get rid of the white flash
			$('.tiles :not(.new)').remove();
			$('.tiles .tile').removeClass('new');
		}
		
		CSA.advanceTileInstanceNum();
		setTimeout(CSA.replaceTiles, 5000);
	},
	advanceTileInstanceNum:	function()
	{
		if (CSA.tileInstanceNum == CSA.maxTileInstanceNum){
			CSA.tileInstanceNum = 1;
		} else {
			CSA.tileInstanceNum++;
		}
	}
}

$(document).ready(function(){
	Shadowbox.init();
	CSA.init();
});