AddNamespace("NPR.twitter");

NPR.twitter.updateList = function(twitters) {

  var statusHTML = [];
  
  try {
	  
	  if (twitters.length > 0) {
		  var divName = "twitter_list_" + twitters[0].user.screen_name;
		  
		  for (var i=0; i<twitters.length; i++){
			var username = twitters[i].user.screen_name;
			var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) {
			  return '<a href="'+url+'">'+url+'</a>';
			}).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
			  return  reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'">'+reply.substring(1)+'</a>';
			});
			statusHTML.push('<li><span class="tweet">'+status+'</span> <a class="timestamp" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+NPR.twitter.relative_time(twitters[i].created_at)+'</a></li>');
		  }
		  document.getElementById(divName).innerHTML = statusHTML.join('');
	  }
  
  } catch (e) {
	NPR.messaging.exception(e, 'updating: '  + divName, 'NPR.twitter.updateList', NPR.messaging.constants.JAVASCRIPT_GENERAL_ISSUE);
  }
  
}

NPR.twitter.relative_time = function(time_value) {
	
  try {
	  
	  var values = time_value.split(" ");
	  time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
	  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);
	  delta = delta + (relative_to.getTimezoneOffset() * 60);
	
	  if (delta < 60) {
		return 'less than a minute ago';
	  } else if(delta < 120) {
		return 'about a minute ago';
	  } else if(delta < (60*60)) {
		return (parseInt(delta / 60)).toString() + ' minutes ago';
	  } else if(delta < (120*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';
	  }
  
  } catch (e) {
    NPR.messaging.exception(e, 'time_value: '  + time_value, 'NPR.twitter.relative_time', NPR.messaging.constants.JAVASCRIPT_GENERAL_ISSUE);
  }
  
}