/***
|Name:|PrettyDatesPlugin|
|Description:|Provides a new date format ('pppp') that displays times such as '2 days ago'|
|Version:|1.0 ($Rev: 3646 $)|
|Date:|$Date: 2008-02-27 02:34:38 +1000 (Wed, 27 Feb 2008) $|
|Source:|http://mptw.tiddlyspot.com/#PrettyDatesPlugin|
|Author:|Simon Baird <simon.baird@gmail.com>|
|License:|http://mptw.tiddlyspot.com/#TheBSDLicense|
!!Notes
* If you want to you can rename this plugin. :) Some suggestions: LastUpdatedPlugin, RelativeDatesPlugin, SmartDatesPlugin, SexyDatesPlugin.
* Inspired by http://ejohn.org/files/pretty.js
***/
//{{{
Date.prototype.prettyDate = function() {
	var diff = (((new Date()).getTime() - this.getTime()) / 1000);
	var day_diff = Math.floor(diff / 86400);

	if (isNaN(day_diff))      return "";
	else if (diff < 0)        return "in the future";
	else if (diff < 60)       return "just now";
	else if (diff < 120)      return "1 minute ago";
	else if (diff < 3600)     return Math.floor(diff/60) + " minutes ago";
	else if (diff < 7200)     return "1 hour ago";
	else if (diff < 86400)    return Math.floor(diff/3600) + " hours ago";
	else if (day_diff == 1)   return "Yesterday";
	else if (day_diff < 7)    return day_diff + " days ago";
	else if (day_diff < 14)   return  "a week ago";
	else if (day_diff < 31)   return Math.ceil(day_diff/7) + " weeks ago";
	else if (day_diff < 62)   return "a month ago";
	else if (day_diff < 365)  return "about " + Math.ceil(day_diff/31) + " months ago";
	else if (day_diff < 730)  return "a year ago";
	else                      return Math.ceil(day_diff/365) + " years ago";
}

Date.prototype.formatString_orig_mptw = Date.prototype.formatString;

Date.prototype.formatString = function(template) {
	return this.formatString_orig_mptw(template).replace(/pppp/,this.prettyDate());
}

// for MPTW. otherwise edit your ViewTemplate as required.
// config.mptwDateFormat = 'pppp (DD/MM/YY)'; 
config.mptwDateFormat = 'pppp'; 

//}}}