/**
 *	@description twitter fetching and processing js for search or regular api json
 *	@author js+twitter+paulypopex@gmail.com
 *	@date 27/02/09
 *	@requires jquery1.2
 *	@usage <script type="text/javascript" src="http://www.popex.ukshells.co.uk/twfeed.js"></script>
 *	@usage + <ul class="tw"></ul>
 *	@usage + <link rel="tw" href="http://search.twitter.com/search.json?q=@popbitch+OR+%23popbitch" />
 *	@usage + optionally <a class="twreply" href="/reply">reply</a>
 */
var tw = {
	ul: 'ul.tw:last',
	r: 30,
	d: function ( m ) { window.console && console.log( m ) },
	q: function ( u ) { return u.indexOf('?') == -1 ? '?' : '&'; },
	u: function ( n, na ) { n = n.substring(1); return '<a href="http://twitter.com/'+n+'">'+(na?'':'@')+n+'</a>' },
	s: function ( w ) { w = w.substring(1); return '<a href="http://search.twitter.com/search?q=%23'+w+'"><u>'+w+'</u></a>' },
	p: function ( t ) { return t.replace( /((https?)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(F){return'<a href="'+F+'">'+F+"</a>"}).replace(/\B@\w+/g, tw.u ).replace(/\B\#[\w:]+/g, tw.s ) }, /* from twitter's blogger.js */
	filter: function ( m ) { return $(tw.ul+' #' + m.id).length },
	li: function ( m, r ) { return '<li class="tw" id="' + m.id + '">' + tw.p( m.text ) + ' <i>' + tw.u( '@' + ( m.from_user || m.user.screenname ), 1 ) + '</i>' + ( r ? ( ' <a href="' + r + tw.q( r ) + 'tw=' + m.id + '">reply</a>' ) : '' ) + '</li>' },
	get: function ( a ) {
		$(tw.ul).addClass('loading');
		var u = $('[rel=tw]').attr('href') || 'http://search.twitter.com/search.json?q=%23twitter';
		u += tw.q( u );
		u += 'callback=?';
		$.getJSON( u, function ( js ) { tw.go( js, a ) } );
	},
	go: function ( js, a ) {
		var ul = $(tw.ul);
		// $(ul).length || tw.d('ul.tw missing');
		var r = $('a.twreply').attr('href');
		js = js.results || js;
		for ( var i = 0; i < js.length; i ++ ) {
			if (	! tw.filter( js[i] )) {
				var li = tw.li( js[i], r );
				a ? ul.append(li) : $(li).hide().prependTo(ul).slideDown('slow');
			}
		}
		ul.removeClass('loading');
		setTimeout( tw.get, tw.r * 1000 );
	}
};
window.$ && $( function () {
	tw.get(true);
} );