gtto = null;

tweets = [];

function tweetToHtml(tweet) {

	html = '<li class="tweet';

	for (var i in tweet.annotations) {

		html += ' a_' + tweet.annotations[i].name

	}

	html += '" id="tweet_' + tweet.id + '">';

	a_user = '<a href="http://twitter.com/"' + tweet.user.screen_name + ' target="_blank">';

	if (tweet.user.profile_image_url) {

		html += a_user + '<img class="tweet_profile_image" src="' + tweet.user.profile_image_url + '" /></a>';

	}

	html += '<h4>' + a_user + '@' + tweet.user.screen_name + '</a></h4><p class="tweet_created_at">' + tweet.created_at + '</p><p>';

	lastend = 0;

	txt = '';

	tweet.entities.sort(function(a, b) { return a.indice_start - b.indice_start });

	for (var i in tweet.entities) {

		txt += tweet.text.substring(lastend, tweet.entities[i].indice_start);

		lastend = tweet.entities[i].indice_end;

		switch(tweet.entities[i].type) {

			case "entity_hashtag":

				txt += '<a href="http://twitter.com/search?q=%23' + tweet.entities[i].entity.text + '" target="_blank">#' + tweet.entities[i].entity.text + '</a>';

				break;

			case "entity_user":

				txt += '<a href="http://twitter.com/' + tweet.entities[i].entity.screen_name + '" target="_blank">@' + tweet.entities[i].entity.screen_name + '</a>';

				break;

			case "entity_url":

			case "entity_media":

				txt += '<a href="' + tweet.entities[i].entity.expanded_url + '" target="_blank">' + tweet.entities[i].entity.expanded_url + '</a>';

				break;

		}

	}

	txt += tweet.text.substring(lastend);

	html += txt + '</p></li>';

	return html;

}

function scheduleTweets() {

	var tl = $("#tweetlist"), tc = $("#tweetcontainer");

	if (tweets.length != tl.children().length) {

		console.log("Tweet count error");

	}

	if (tweets.length) {

		while (tl.height() - (tc.scrollTop() + tc.height()) > 1000) {

			tl.children().last().detach();

			tweets.pop();

		}

		if (tl.height() - (tc.scrollTop() + tc.height()) < 120) {

			getTweets({

				before_id : tweets[tweets.length - 1].id,

				limit : 5

			});

		}

		getTweets({

			after_id : tweets[0].id

		});

	} else {

		getTweets({

			limit: 15

		});

	}

}

function getTweets(params) {

	$.getJSON("http://" + document.location.hostname + ":8888/?callback=?", params, function(data, a, b) {

		if (data.tweets && data.tweets.length) {

			var tl = $("#tweetlist"), tc = $("#tweetcontainer");

			html = '';

			for (var i in data.tweets) {

				html += tweetToHtml(data.tweets[i]);

			}

			if (params.before_id) {

				tl.append(html);

				tweets = tweets.concat(data.tweets);

			} else {

				var pos = tc.scrollTop(), fixScroll = (pos > 80);

				pos -= tl.height();

				tl.prepend(html);

				tweets = data.tweets.concat(tweets);

				if (fixScroll) {

					tc.scrollTop(tl.height() + pos);

				}

			}

		}

	});

}

$(document).ready(function() {

	gtto = setInterval(scheduleTweets, 1500);

});