/*
 * jQuery LiveTwitter 1.6.0
 * - Live updating Twitter plugin for jQuery
 *
 * Copyright (c) 2009-2010 Inge Jørgensen (elektronaut.no)
 * Licensed under the MIT license (MIT-LICENSE.txt)
 *
 * $Date: 2010/10/25$
 */

/*jslint browser: true, devel: true, onevar: false, immed: false, regexp: false */
/*global window: false, jQuery: false */

/*
 * Usage example:
 * $("#twitterSearch").liveTwitter('bacon', {limit: 10, rate: 15000});
 */


(function ($) {
	if (!$.fn.reverse) {
		$.fn.reverse = function () {
			return this.pushStack(this.get().reverse(), arguments);
		};
	}
	$.fn.liveTwitter = function (query, options, callback) {
		var domNode = this;
		$(this).each(function () {
			var settings = {};

			// Handle changing of options
			if (this.twitter) {
				settings = $.extend(this.twitter.settings, options);
				this.twitter.settings = settings;
				if (query) {
					this.twitter.query = query;
				}
				this.twitter.limit = settings.limit;
				this.twitter.mode  = settings.mode;
				if (this.twitter.interval) {
					this.twitter.refresh();
				}
				if (callback) {
					this.twitter.callback = callback;
				}

			// ..or create a new twitter object
			} else {
				// Extend settings with the defaults
				settings = $.extend({
					mode:      'search', // Mode, valid options are: 'search', 'user_timeline'
					rate:      15000,    // Refresh rate in ms
					limit:     10,       // Limit number of results
					refresh:   true,
					base:		"",
					timeLinks: true,
					service:   ''
				}, options);

				// Default setting for showAuthor if not provided
				if (typeof settings.showAuthor === "undefined") {
					settings.showAuthor = (settings.mode === 'user_timeline') ? false : true;
				}

				// Set up a dummy function for the Twitter API callback
				if (!window.twitter_callback) {
					window.twitter_callback = function () {
						return true;
					};
				}

				this.twitter = {
					settings:      settings,
					query:         query,
					limit:         settings.limit,
					mode:          settings.mode,
					interval:      false,
					container:     this,
					lastTimeStamp: 0,
					base:		   settings.base,
					callback:      callback,

					// Convert the time stamp to a more human readable format
					relativeTime: function(timeString){
						var parsedDate = Date.parse(timeString);
						var delta = (Date.parse(Date()) - parsedDate) / 1000;
						var r = '';
						if (delta < 60) {
							r = 'fa ' + delta + ' segs.';

						} else if(delta < 120) {
							r = 'fa un minut';

						} else if(delta < (45*60)) {
							r = 'fa ' + (parseInt(delta / 60, 10)).toString() + ' mins.';
						} else if(delta < (90*60)) {
							r = 'fa una hora';

						} else if(delta < (24*60*60)) {
							r = 'fa ' + (parseInt(delta / 3600, 10)).toString() + ' hores';
						} else if(delta < (48*60*60)) {
							r = 'fa un dia';

						} else {
							r = 'fa ' + (parseInt(delta / 86400, 10)).toString() + ' dies';
						}
						return r;
					},

					// Update the timestamps in realtime
					refreshTime: function () {
						var twitter = this;
						$(twitter.container).find('span.time').each(function () {
							var time_element = twitter.settings.timeLinks ? $(this).find('a') : $(this);
							time_element.html(twitter.relativeTime(this.timeStamp));
						});
					},

					// Handle reloading
					refresh: function (initialize) {
						var twitter = this;
						if (this.settings.refresh || initialize) {
							var url = '';
							var params = {};
							if (twitter.mode === 'search') {
								if (this.query && this.query !== '') {
									params.q = this.query;
								}
								if (this.settings.geocode) {
									params.geocode = this.settings.geocode;
								}
								if (this.settings.lang) {
									params.lang = this.settings.lang;
								}
								if (this.settings.rpp) {
									params.rpp = this.settings.rpp;
								} else {
									params.rpp = this.settings.limit;
								}
								
								// Convert params to string
								var paramsString = [];
								for (var param in params) {
									if (params.hasOwnProperty(param)) {
										paramsString[paramsString.length] = param + '=' + encodeURIComponent(params[param]);
									}
								}
								paramsString = paramsString.join("&");
								if (settings.service.length > 0) {
									url = "http://" + settings.service + "/api/search.json?";
								} else {
									url = "http://search.twitter.com/search.json?";
								}
								url += paramsString + "&callback=?";
							} else if (twitter.mode === 'user_timeline') {
								if (settings.service.length > 0) {
									url = "http://" + settings.service + "/api/statuses/user_timeline/" + encodeURIComponent(this.query) + ".json?count=" + twitter.limit + "&callback=?";
								} else {
									url = "http://api.twitter.com/1/statuses/user_timeline/" + encodeURIComponent(this.query) + ".json?count=" + twitter.limit + "&callback=?";
								}
							} else if (twitter.mode === 'list') {
								var username = encodeURIComponent(this.query.user);
								var listname = encodeURIComponent(this.query.list);
								url = "http://api.twitter.com/1/" + username + "/lists/" + listname + "/statuses.json?per_page=" + twitter.limit + "&callback=?";
							}
							$.getJSON(url, function (json) {
								var results = null;
								if (twitter.mode === 'search') {
									results = json.results;
								} else {
									results = json;
								}
								var newTweets = 0;
								$(results).reverse().each(function () {
									var screen_name = '';
									var profile_image_url = '';
									var created_at_date = '';
									var tweet_url = '';
									if (twitter.mode === 'search') {
										screen_name = this.from_user;
										profile_image_url = this.profile_image_url;
										created_at_date = this.created_at;
									} else {
										screen_name = this.user.screen_name;
										profile_image_url = this.user.profile_image_url;
										// Fix for IE
										created_at_date = this.created_at.replace(/^(\w+)\s(\w+)\s(\d+)(.*)(\s\d+)$/, "$1, $3 $2$5$4");
									}
									if (settings.service.length > 0) {
										tweet_url = 'http://' + settings.service + '/notice/' + this.id;
									} else {
										tweet_url = 'http://twitter.com/' + screen_name + '/statuses/' + this.id;
									}
									var userInfo = this.user;
									var linkified_text = this.text.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/, function (m) { 
										return m.link(m); 
									});
									if (settings.service.length > 0) {
										linkified_text = linkified_text.replace(/@[A-Za-z0-9_]+/g, function (u) {
											return u.link('http://' + settings.service + '/' + u.replace(/^@/, ''));
										});
									} else {
										linkified_text = linkified_text.replace(/@[A-Za-z0-9_]+/g, function (u) {
											return u.link('http://twitter.com/' + u.replace(/^@/, ''));
										});
									}
									if (settings.service.length > 0) {
										linkified_text = linkified_text.replace(/#[A-Za-z0-9_\-]+/g, function (u) {
											return u.link('http://http://' + settings.service + '/search/notice?q=' + u.replace(/^#/, '%23'));
										});
									} else {
										linkified_text = linkified_text.replace(/#[A-Za-z0-9_\-]+/g, function (u) {
											return u.link('http://search.twitter.com/search?q=' + u.replace(/^#/, '%23'));
										});
									}
									
									if (!twitter.settings.filter || twitter.settings.filter(this)) {
										if (Date.parse(created_at_date) > twitter.lastTimeStamp) 
										{
											newTweets += 1;
											
											var tweetHTML = '';
											
											tweetHTML+=	'<li id="tweet-'+this.id+'" class="tweet tweet-'+this.id+'">';
											tweetHTML+=		'<div class="avatar">';
											
											// if (twitter.settings.showAuthor) 
											// {
												var profile_url = '';
												if (settings.service.length > 0)
												{
													profile_url = 'http://' + settings.service + '/' + screen_name;
												} 
												else
												{
													profile_url = 'http://twitter.com/' + screen_name;
												}
												
												// tweetHTML+=		'<div class="twavatar">';
												// tweetHTML+=			'<div class="twavatar-holder">';
												tweetHTML+=				'<a target="_blank" class="pic" href="http://twitter.com/'+screen_name+'"><img src="'+profile_image_url+'" /></a>';
												// tweetHTML+=			'</div>';
												// tweetHTML+=		'</div>';
											// } 
											//else 
											//{
											//}
											
											// tweetHTML+=			'<div class="source">';
											// tweetHTML+=				'<a target="_blank" href="http://twitter.com/'+screen_name+'"><img src="'+twitter.base+'/img/icons/minitweet.gif" /></a>';
											// tweetHTML+=			'</div>';
											
											var hour=new Date(created_at_date).getHours();
											var minutes=new Date(created_at_date).getMinutes();
											
											if(hour.toString().length==1) hour="0"+hour;
											if(minutes.toString().length==1) minutes="0"+minutes;
											
											tweetHTML+=			'<a class="time" href="http://twitter.com/'+this.from_user+'/status/'+this.id_str+'">'+hour+":"+minutes+'</a>';
											// tweetHTML+=			'<div class="time">'+twitter.relativeTime(created_at_date)+'</div>';
											tweetHTML+=		'</div>';
											
											//tweetHTML+=		'<div class="bafarada">';
											tweetHTML+=			'<div class="text">';
											tweetHTML+= 			'<p>' + linkified_text + '</p>';
											tweetHTML+=				'<a target="_blank" href="http://twitter.com/'+screen_name+'">'+screen_name+'</a>';
											tweetHTML+=			'</div>';
											
											// if(twitter.settings.showAuthor) 
											// {
												// tweetHTML+=		'<div class="username">';
												// tweetHTML+=			'<a target="_blank" href="http://twitter.com/'+screen_name+'">'+screen_name+'</a>';				
												// tweetHTML+=		'</div>';
											// }
											
											//tweetHTML+=		'</div>';
											
											tweetHTML+=	'</li>';
											
											$(twitter.container).prepend(tweetHTML);
											var timeStamp = created_at_date;
											$(twitter.container).find('div.time:first').each(function () {
												this.timeStamp = timeStamp;
											});
											if (!initialize) {
												$(twitter.container).find('.tweet-' + this.id).hide().fadeIn();
											}
											
											twitter.lastTimeStamp = Date.parse(created_at_date);
										}
									}
								});
								if (newTweets > 0) {
									// Limit number of entries
									$(twitter.container).find('li.tweet:gt(' + (twitter.limit - 1) + ')').remove();
									// Run callback
									if (twitter.callback) {
										twitter.callback(domNode, newTweets);
									}
									// Trigger event
									$(domNode).trigger('tweets');
								}
							});
						}	
					},
					start: function () {
						var twitter = this;
						if (!this.interval) {
							this.interval = setInterval(function () {
								twitter.refresh();
							}, twitter.settings.rate);
							this.refresh(true);
						}
					},
					stop: function () {
						if (this.interval) {
							clearInterval(this.interval);
							this.interval = false;
						}
					},
					clear: function () {
						$(this.container).find('div.tweet').remove();
						this.lastTimeStamp = null;
					}
				};
				var twitter = this.twitter;
				this.timeInterval = setInterval(function () {
					twitter.refreshTime();
				}, 5000);
				this.twitter.start();
			}
		});
		return this;
	};
})(jQuery);