/*
JUITTER 1.0.0 - 22/07/2009 - http://juitter.com
BY RODRIGO FANTE - http://rodrigofante.com

** jQuery 1.2.* or higher required

Juitter is distributed under the MIT License
Read more about the MIT License --> http://www.opensource.org/licenses/mit-license.php

This script is just a beta test version, download and use it at your own risk.
The Juitter developer shall have no responsability for data loss or damage of any kind by using this script.
*/
(function($) {
	var conf = {},
		// JUITTER DEFAULT CONFIGURATION ========================
		// YOU CAN CHANGE THE DYNAMIC VARS ON CALLING THE start method, see the system.js for more information about it.

		defNumMSG = 20; // set the number of messages to be show
		containerDiv="juitterContainer"; // //Set a place holder DIV which will receive the list of tweets example <div id="juitterContainer"></div>
		loadMSG="Loading messages..."; // Loading message, if you want to show an image, fill it with "image/gif" and go to the next variable to set which image you want to use on
		imgName="loader.gif"; // Loading image, to enable it, go to the loadMSG var above and change it to "image/gif"
		readMore="Read it on Twitter"; // read more message to be show after the tweet content
		nameUser="image"; // insert "image" to show avatar of "text" to show the name of the user that sent the tweet
		live:"live-20"; //optional, disabled by default, the number after "live-" indicates the time in seconds to wait before request the Twitter API for updates, I do not recommend to use less than 60 seconds.
		// end of configuration
	
		// some global vars
		aURL="";msgNb=1;
		var mode,param,time,lang,contDiv,loadMSG,gifName,numMSG,readMore,fromID,ultID,filterWords;
		var running=false;
		// Twitter API Urls
		apifMultipleUSER = "http://search.twitter.com/search.json?from%3A";
		apifUSER = "http://search.twitter.com/search.json?q=from%3A";
		apitMultipleUSER = "http://search.twitter.com/search.json?to%3A";
		apitUSER = "http://search.twitter.com/search.json?q=to%3A";
		apiSEARCH = "http://search.twitter.com/search.json?q=";
	$.Juitter = {
		registerVar: function(opt){
      mode=opt.searchType;
			param=opt.searchObject;
			timer=opt.live;
			lang=opt.lang?opt.lang:"";
			contDiv=opt.containerDiv?opt.containerDiv:containerDiv;
			loadMSG=opt.loadMSG?opt.loadMSG:loadMSG;
			gifName=opt.imgName?opt.imgName:imgName;
			numMSG=opt.numMSG?opt.numMSG:defNumMSG;
			readMore=opt.readMore?opt.readMore:readMore;
			fromID=opt.nameUser?opt.nameUser:nameUser;
			filterWords=opt.filter;
			openLink=opt.openExternalLinks?"target='_blank'":"";
		},
		start: function(opt) {		
			ultID=0;
			if($("#"+contDiv)){	
				this.registerVar(opt);
				// show the load message
				this.loading();
				// create the URL  to be request at the Twitter API
				aURL = this.createURL();
				// query the twitter API and create the tweets list
				this.conectaTwitter(1);		
				// if live mode is enabled, schedule the next twitter API query
				if(timer!=undefined&&!running) this.temporizador();
			}   
		},
		update: function(){
			this.conectaTwitter(2);		
			if(timer!=undefined) this.temporizador();
		},
		loading: function(){
			if(loadMSG=="image/gif"){
				$("<img></img>")
					.attr('src', gifName)
					.appendTo("#"+contDiv); 
			} else $("#"+contDiv).html(loadMSG);
		},
		createURL: function(){
			var url = "";
			jlg=lang.length>0?"&lang="+lang:jlg=""; 
			var seachMult = param.search(/,/);
			if(seachMult>0) param = "&ors="+param.replace(/,/g,"+");
			if(mode=="fromUser" && seachMult<=0) url=apifUSER+param;
			else if(mode=="fromUser" && seachMult>=0) url=apifMultipleUSER+param;
			else if(mode=="toUser" && seachMult<=0) url=apitUSER+param;
			else if(mode=="toUser" && seachMult>=0) url=apitMultipleUSER+param;
			else if(mode=="searchWord") url=apiSEARCH+param+jlg;
			url += "&rpp="+numMSG;		
			return url;
		},
		delRegister: function(){
			// remove the oldest entry on the tweets list
			if(msgNb>=numMSG){
				$(".juitter").each(
					function(o,elemLI){
						if(o>=numMSG) $(this).hide("slow");													  
					}
				);
			}	
		},
		conectaTwitter: function(e){
			// query the twitter api and create the tweets list
			$.ajax({
				url: aURL,
				type: 'GET',
				dataType: 'jsonp',
				timeout: 1000,
				error: function(){ $("#"+contDiv).html("fail#"); },
				success: function(json){
					if(e==1) $("#"+contDiv).html("");				
					$.each(json.results,function(i,item) {
						if(e==1 || (i<numMSG && item.id>ultID)){
							if(i==0){
								tultID = item.id;
								$("<ul></ul>")
									.attr('id', 'juitter-list-'+ultID)
									.attr('class','juitter-list')
									.prependTo("#"+contDiv);  
							}
							if (item.text != "undefined") {
								var link =  "http://twitter.com/"+item.from_user+"/status/"+item.id;  
								
								var tweet = $.Juitter.filter(item.text);
								
								if (fromID=='image') {
                  mHTML = '<a href="http://www.twitter.com/'+item.from_user+'"><img src="'+item.profile_image_url+'" alt="'+item.from_user+'" class="juitterAvatar" /></a><a class="juitter-user" href="http://www.twitter.com/'+item.from_user+'">'+item.from_user+'</a>: '+$.Juitter.textFormat(tweet)+' <br /> <span class="time">'+$.Juitter.relativeTime(item.created_at)+'</span>';
                } else {
                  mHTML = '<a class="juitter-user" href="http://www.twitter.com/'+item.from_user+'">'+item.from_user+'</a>: '+$.Juitter.textFormat(tweet)+' <br /> <span class="time">'+$.Juitter.relativeTime(item.created_at)+'</span>';
                }
								$("<li></li>") 
									.html(mHTML)  
									.attr('id', 'juitter-'+msgNb)
									.attr('class', 'juitter')
									.appendTo("#juitter-list-"+ultID);

								$('#juitter-'+msgNb).hide();
								$('#juitter-'+msgNb).show("fast", function () {
                  $('#'+contDiv).trigger('change');
                });

								
								// remove old entries
								$.Juitter.delRegister();
								msgNb++;								
							}
						}
					});	
					ultID=tultID;
				}
			});
		},	
		filter: function(s){
			if(filterWords){
				searchWords = filterWords.split(",");				
				if(searchWords.length>0){
					cleanHTML=s;
					$.each(searchWords,function(i,item){	
						sW = item.split("->").length>0 ? item.split("->")[0] : item;
						rW = item.split("->").length>0 ? item.split("->")[1] : "";					
						regExp=eval('/'+sW+'/gi');					
						cleanHTML = cleanHTML.replace(regExp, rW);							
					});
				} else cleanHTML = s;			
				return cleanHTML;
			} else return s;
		},
		textFormat: function(texto){
			//make links
			var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
			texto = texto.replace(exp,"<a href='$1' class='extLink' "+openLink+">$1</a>"); 
			var exp = /[\@]+([A-Za-z0-9-_]+)/ig;
			texto = texto.replace(exp,"<a href='http://twitter.com/$1' class='profileLink'>@$1</a>"); 
			var exp = /[\#]+([A-Za-z0-9-_]+)/ig;
			texto = texto.replace(exp,"<a href='http://search.twitter.com/search?q=%23$1' onclick='$.Juitter.start({searchType:\"searchWord\",searchObject:\"$1\"});return false;' class='hashLink'>#$1</a>");
			// make it bold
			if(mode=="searchWord"){
				tempParam = param.replace(/&ors=/,"");
				arrParam = tempParam.split("+");
				$.each(arrParam,function(i,item){					
					regExp=eval('/'+item+'/gi');
					newString = new String(' <b>'+item+'</b> ');
					texto = texto.replace(regExp, newString);					  
				});				
			}
			return texto;
		},
		temporizador: function(){
			// live mode timer
			running=true;
			aTim = timer.split("-");
			if(aTim[0]=="live" && aTim[1].length>0){
				tempo = aTim[1]*1000;
				setTimeout("$.Juitter.update()",tempo);
			}
		},

    relativeTime: function (time_value) {
      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);
      if(delta < 60) {
      return 'mindre enn ett minutt siden';
      } else if(delta < 120) {
      return 'cirka ett minutt siden';
      } else if(delta < (45*60)) {
      return (parseInt(delta / 60)).toString() + ' minutter siden';
      } else if(delta < (90*60)) {
      return 'cirka en time siden';
      } else if(delta < (24*60*60)) {
      return 'cirka ' + (parseInt(delta / 3600)).toString() + ' timer siden';
      } else if(delta < (48*60*60)) {
      return '1 dag siden';
      } else {
      return (parseInt(delta / 86400)).toString() + ' dager siden';
      }
    }
	};

})(jQuery);