/* ds-twitter.js
 * modified from the original http://twitter.com/javascripts/blogger.js
 * for use on dsandler.org only; contact <same-as-domain>@dsandler.org
 */

//var RE_LINK_HTTP = new RegExp("(http://[_.%A-Za-z0-9#/]+[_A-Za-z0-9#])", "g");
var RE_LINK = new RegExp("(http://)?([A-Za-z0-9-.]+[.](?:com|net|org|us|edu|info))(/[_.%A-Za-z0-9#/]*[_A-Za-z0-9#])?", "g");
var TWITTER_XREF = new RegExp("@([A-Za-z0-9-_]*)", "g");
//var LONG_WORDS = new RegExp("([^ <>\"']{10})([^ <>\"']+)", "g");

var LINK_SUFFIX = "/&hellip;";

function autolink(s) {
	return s
	.replace(RE_LINK, function(str, scheme, host, path, offset, s) {
		var text = str;
		if (text.length > 18) {
			text = host + LINK_SUFFIX; // "/&#x22EF;";
		}
		if (scheme == '') scheme = 'http://';
		return "<a href=\"" + scheme + host + path + "\">" 
			+ text + "</a>";
	})
	.replace(TWITTER_XREF, "@<a href=\"http://twitter.com/$1\">$1</a>")
	;
}
function autolink2(s) {
	s = s.replace(RE_LINK_HTTP, "<a href=\"$1\">$1</a>");
	parts = s.split(/(<[^>]*>)/g);
	s = '';
	for (var i=0; i<parts.length; i++) {
		var p = parts[i];
		if (p == '') continue;
		if (p.substring(0,1) == '<') {
			s += p; // skip things already linked
		}
		else {
			s += p.replace(RE_LINK, "<a href=\"http://$1\">$1</a>");
		}
	}
	return s;
}

function onTwitterReady(obj) {
	var twitters = obj;
	var statusHTML = "";
	var username = "";
	for (var i=0; i<twitters.length; i++){
		username = twitters[i].user.screen_name;
		var text = autolink(twitters[i].text);
		statusHTML += ('<li><span class="twitter_text">'+text+'</span>'
		+'<span class="twitter_permalink">&hellip;<a href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+relative_time(twitters[i].created_at)+'</a></span>'
		+'</li>')
	}
	document.getElementById('twitter_update_list').innerHTML = statusHTML;
}

function relative_time(time_value, short) {
  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 short ? 'now' : 'a moment ago';
  } else if(delta < 120) {
    return short ? '~1m' : 'about a minute ago';
  } else if(delta < (60*60)) {
    return (parseInt(delta / 60)).toString() + 
		(short ? 'm' : ' minutes ago');
  } else if(delta < (120*60)) {
    return short ? '~1h' : 'about an hour ago';
  } else if(delta < (24*60*60)) {
    return (short ? '~' : 'about ') 
		+ (parseInt(delta / 3600)).toString() 
		+ (short?'h':' hours ago');
  } else if(delta < (48*60*60)) {
    return short ? '1d' : 'yesterday';
  } else {
    return (parseInt(delta / 86400)).toString() 
		+ (short ? 'd' : ' days ago');
  }
}