/**
 * Tweet retreival and time format scripts.
 */
function relative_time(time_value) {
   var parsed_date = Date.parse(time_value);

   var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
   var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);

   if(delta < 60) {
       return 'less than a minute ago';
   } else if(delta < 120) {
       return 'about a minute ago';
   } else if(delta < (45*60)) {
       return (parseInt(delta / 60)).toString() + ' minutes ago';
   } else if(delta < (90*60)) {
           return 'about an hour ago';
       } else if(delta < (24*60*60)) {
       return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
   } else if(delta < (48*60*60)) {
       return '1 day ago';
   } else {
       return (parseInt(delta / 86400)).toString() + ' days ago';
   }
}

$(document).ready(function(){
	var url = "http://search.twitter.com/search.json?q=&from=iREAD_illinois&rpp=5&callback=?";
	var tweets = $('<ul id="tweets">').appendTo("#tweetscontainer");
		$.getJSON(url,  function(data){
			$.each(data.results, function(i,item){
				tweets.append(
							  '<li><a href="http://twitter.com/'
							  +item.from_user
							  +'/statuses/'
							  +item.id
							  +'" title="Click here to view this on twitter" target="_blank"><strong>'
							  +item.from_user
							  +'</strong></a> <em>'
							  +relative_time(item.created_at)
							  +'</em><div class="text">'
							  +item.text.replace(/(\w+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+)/gi, '<a href="$1" target="_blank">$1</a>').replace(/[\@]+([A-Za-z0-9-_]+)/gi, '<a href="http://twitter.com/$1" target="_blank">@$1</a>')
							  +'</div></li>');
      		});
		});
  	});