/*  usefull for design of twitter feeds 
    borrowed some from: http://twitter.com/javascripts/blogger.js */

function formatTweets() {
    $('li.tweet em').each(function(i) {
        var time = $(this).text();
        $(this).text( relative(time) );
    });
    $('li.tweet').each(function(i) {
        var txt = $(this).html();
        txt = txt.replace(/\B@([_a-z0-9]+)/ig, function(r) { return r.charAt(0)+'<a href="http://twitter.com/'+r.substring(1)+'">'+r.substring(1)+'</a>';});
        $(this).html(txt);
    });
}

function relative(time_value) {
  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';
  }
}

$(document).ready(function() {
    formatTweets();
});