/**
 * jQuery.timers - Timer abstractions for jQuery
 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
 * Date: 2009/02/08
 *
 * @author Blair Mitchelmore
 * @version 1.1.2
 *
 **/

jQuery.fn.extend({
	everyTime: function(interval, label, fn, times, belay) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, times, belay);
		});
	},
	oneTime: function(interval, label, fn) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, 1);
		});
	},
	stopTime: function(label, fn) {
		return this.each(function() {
			jQuery.timer.remove(this, label, fn);
		});
	}
});

jQuery.event.special

jQuery.extend({
	timer: {
		global: [],
		guid: 1,
		dataKey: "jQuery.timer",
		regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/,
		powers: {
			// Yeah this is major overkill...
			'ms': 1,
			'cs': 10,
			'ds': 100,
			's': 1000,
			'das': 10000,
			'hs': 100000,
			'ks': 1000000
		},
		timeParse: function(value) {
			if (value == undefined || value == null)
				return null;
			var result = this.regex.exec(jQuery.trim(value.toString()));
			if (result[2]) {
				var num = parseFloat(result[1]);
				var mult = this.powers[result[2]] || 1;
				return num * mult;
			} else {
				return value;
			}
		},
		add: function(element, interval, label, fn, times, belay) {
			var counter = 0;
			
			if (jQuery.isFunction(label)) {
				if (!times) 
					times = fn;
				fn = label;
				label = interval;
			}
			
			interval = jQuery.timer.timeParse(interval);

			if (typeof interval != 'number' || isNaN(interval) || interval <= 0)
				return;

			if (times && times.constructor != Number) {
				belay = !!times;
				times = 0;
			}
			
			times = times || 0;
			belay = belay || false;
			
			var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {});
			
			if (!timers[label])
				timers[label] = {};
			
			fn.timerID = fn.timerID || this.guid++;
			
			var handler = function() {
				if (belay && this.inProgress) 
					return;
				this.inProgress = true;
				if ((++counter > times && times !== 0) || fn.call(element, counter) === false)
					jQuery.timer.remove(element, label, fn);
				this.inProgress = false;
			};
			
			handler.timerID = fn.timerID;
			
			if (!timers[label][fn.timerID])
				timers[label][fn.timerID] = window.setInterval(handler,interval);
			
			this.global.push( element );
			
		},
		remove: function(element, label, fn) {
			var timers = jQuery.data(element, this.dataKey), ret;
			
			if ( timers ) {
				
				if (!label) {
					for ( label in timers )
						this.remove(element, label, fn);
				} else if ( timers[label] ) {
					if ( fn ) {
						if ( fn.timerID ) {
							window.clearInterval(timers[label][fn.timerID]);
							delete timers[label][fn.timerID];
						}
					} else {
						for ( var fn in timers[label] ) {
							window.clearInterval(timers[label][fn]);
							delete timers[label][fn];
						}
					}
					
					for ( ret in timers[label] ) break;
					if ( !ret ) {
						ret = null;
						delete timers[label];
					}
				}
				
				for ( ret in timers ) break;
				if ( !ret ) 
					jQuery.removeData(element, this.dataKey);
			}
		}
	}
});

jQuery(window).bind("unload", function() {
	jQuery.each(jQuery.timer.global, function(index, item) {
		jQuery.timer.remove(item);
	});
});var studies;
var studyLinks;
var currentstudy;
var studyPath;

// Write a cookie
function createCookie(name,value,days){
	var date = new Date();
	date.setTime(date.getTime()+(days*24*60*60*1000));
	var expires = "; expires="+date.toGMTString();
	document.cookie = name+"="+value+expires+"; path=/";
	return null;
}

// Read a cookie of the given name
function readCookie(myCookie){
  var nameEQ = myCookie+"=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;			
}

function linkifyTweets() {
	updates = document.getElementById('twitter_update_list');
	tweets = updates.getElementsByTagName('span');
	for (i = 0; i < tweets.length; i++){
		tweets[i].innerHTML= tweets[i].innerHTML.replace('/(http:\/\/[a-zA-Z0-9-\/\.]+)/g', '<a href="$1">$1</a>');
	}
}

function pulltweets(){
	twitterFeed = document.getElementById('twitter_div');
	if (twitterFeed) {
			oldtweets = document.getElementById('twitter_update_list');
			newtweets = document.createElement('ul');	
			newtweets.setAttribute('id','twitter_update_list');
			twitterFeed.replaceChild(newtweets,oldtweets);
	}
}

function setCurrentStudy(study){
	createCookie('currentstudy',parseInt(study),30);
	currentstudy = parseInt(study);
}

function evalStudy(study){	
	switch(study){
		case "next":
			if (currentstudy >= studies) { return 0; } else { return parseInt(currentstudy)+1; }
			break;
		case "previous":
			if (currentstudy <= 0) { return studies; } else { return parseInt(currentstudy)-1; };
			break;
	}
	return study;
}


function setStudyPath(study){
	studyPath = study.href.split('/');
}
function studyRotation(newStudy) {
 	setStudyPath(newStudy);
   $('#case-study .current-study').clone(true).appendTo('#case-study').addClass('new').css({
         'opacity':'0'}).attr('href',"/what/"+studyPath[4]+"/case-studies/"+studyPath[5]).children('img').attr('src','/images/gallery/'+studyPath[5]+'.jpg');
   $('.current-study:not(.new)').animate({opacity: 0}, 750, function(f){
      $(this).remove();
		$('#case-studies a').removeClass('active');
		$('#case-studies a#study'+(currentstudy+1)).addClass('active');
		$('#tag-cloud').load("/what/"+studyPath[4]+"/case-studies/"+studyPath[5]+"/summary");
   })
   $('.current-study.new').animate({opacity:1.0},750,function(f){
      $(this).removeClass('new');
   });
	return false;
}

function homeStudyPreload(){
	var tmpStudy = currentstudy;	
	var temp = new Array();
	for(i = 0 ; i < studies; i++){
		setStudyPath(studyLinks[evalStudy("next")]);
		temp[i] = new Image();
		temp[i].src = '/images/gallery/'+studyPath[5]+'.jpg';
	  setCurrentStudy(evalStudy("next"));
	 }
	setCurrentStudy(tmpStudy);
}

function homeChangeStudy(rotationDirection){
	if (rotationDirection == 'next'){
		var nextStudy = evalStudy("next");
		setCurrentStudy(nextStudy);
		newstudy = studyLinks[nextStudy];
	} else {
		var previousStudy = evalStudy("previous");
		setCurrentStudy(previousStudy);
		newstudy = studyLinks[previousStudy];	
	}
	studyRotation(newstudy)

}

function homeStudyNav(){
	// thumbnails
		$('#case-studies a').click(function(e){
			e.preventDefault(); 
			$(document).stopTime(); 
			setCurrentStudy(parseInt(this.id.substr(5,1))-1);
			studyRotation(this); 
			});
}

function replaceAudio(){
	$('ul#audio li').each(function(e){
		audiofilename = this.id;
		AudioPlayer.embed(audiofilename, {  
		    soundFile: "/audio/case-studies/"+audiofilename+".mp3",  
		    autostart: "no"  
		});
	})
	 
}

function loadVideos(){
	var videos = $('.videoplayer');
	if (videos.get().length > 0){
		var sitepath = "/";
		var params = {
			wmode: "opaque"
		};
		
		var attributes = {};
		if (swfobject.hasFlashPlayerVersion("7")){
			for (i = 0; i < videos.length; i++){
				myBg = videos[i].style.backgroundImage;
				var flashvars = {
					file: "/video/"+videos[i].id+".flv",
					stretching: "exactfit",
					skin: "/sites/beta.metrohealth.net/themes/metrohealth_main/flash/snel.swf"
				};
				if (myBg != "") {
					var myImg = myBg.split("(")[1].split(")")[0];	
					flashvars.image = myImg;
				}			
					swfobject.embedSWF(sitepath+"flash/jw-player.swf", videos[i].id, "500",  "281", "7", sitepath+"flash/expressInstall.swf", flashvars, params, attributes);
			}
			$('body').addClass('flashable');
		}
	}
	
}

$(document).ready(function(){
	if ($("ul#audio")){ replaceAudio(); }
	
	if (document.getElementById('tighome')) {
		studyLinks = $("#case-studies a");
		studies = parseInt(studyLinks.length)-1;
		currentstudy = readCookie('currentstudy');
		if(isNaN(parseInt(currentstudy))){ currentstudy = 0 };
		createCookie("currentstudy",evalStudy("next"), 30);
		$('#case-studies a#study'+(parseInt(currentstudy)+1)).addClass('active');
		homeStudyPreload();		
		homeStudyNav();
		if ((($('body').height() > 240) && ($('body').width() > 480))&&((window.innerHeight != 735) && (window.innerWidth != 980))){
			$(document).everyTime(8000, function(i) {
			    homeChangeStudy('next');
			});
		}
	}
})