/*
 * JavaScript Pretty Date
 * Copyright (c) 2008 John Resig (jquery.com)
 * Licensed under the MIT license.
 */

// Takes an ISO time and returns a string representing how
// long ago the date represents.
function prettyDate(time) {
	var date = new Date((time || "").replace(/-/g,"/").replace(/[TZ]/g," ")),
		diff = (((new Date()).getTime() - date.getTime()) / 1000),
		day_diff = Math.floor(diff / 86400);

	if (isNaN(day_diff) || day_diff < 0 || day_diff >= 31)
		return;

	return day_diff == 0 && (
			diff < 60 && "just now" ||
			diff < 120 && "1 minute ago" ||
			diff < 3600 && Math.floor(diff / 60) + " minutes ago" ||
			diff < 7200 && "1 hour ago" ||
			diff < 86400 && Math.floor(diff / 3600) + " hours ago") ||
		day_diff == 1 && "Yesterday" ||
		day_diff < 7 && day_diff + " days ago" ||
		day_diff < 31 && Math.ceil(day_diff / 7) + " weeks ago";
}

// If jQuery is included in the page, adds a jQuery plugin to handle it as well
if (typeof jQuery != "undefined") {
	jQuery.fn.prettyDate = function() {
		return this.each(function() {
			var date = prettyDate(this.title);
			if (date) jQuery(this).text(date);
		});
	};
}

function formatDate(date) {
  parsedDate = Date.parse(date);
  prettiedDate = prettyDate(parsedDate.toString('u'));
  return prettiedDate || parsedDate.toString('m');
}

var ellipses = '...'
function truncate(str, len, ell) {
  ell = ell || ellipses
  if (str.length > len + ell.length) {
    return str.substring(0, len) + ell;
  } else {
    return str;
  }
}

function autolink(string) {
  var link_regex = /https?\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!]/gi;
  var at_regex = /@\w+/gi;
  var hash_regex = /#\w+/gi;
  string = string.replace(link_regex, function(value) {
    return '<a href="' + value + '" title="' + value + '">' + value + '</a>';
  });
  string = string.replace(at_regex, function(value) {
    return '<a href="http://twitter.com/' + value.substr(1) + '" title="' + value.substr(1) + ' on Twitter">' + value + '</a>';
  });
  string = string.replace(hash_regex, function(value) {
    return '<a href="http://search.twitter.com/search?q=%23' + value.substr(1) + '" title="Search for ' + value + ' on Twitter">' + value + '</a>';
  });
  return string;
}