// -------------------------------------------------------------------
// gAjax RSS Feeds Displayer- By Dynamic Drive, available at: http://www.dynamicdrive.com
// Created: July 17th, 2007 Updated: n/a
// -------------------------------------------------------------------

// Aldaketa batzuk egin ditut, gure beharretara egokitzeko. Behar ez genituen funtzio batzuk kendu ta aldagai batzuk aldatu.

google.load("feeds", "1") //Load Google Ajax Feed API (version 1)

function gfeedfetcher(){
	this.linktarget="_new" || "" //link target of RSS entries
	this.feedlabels=[] //array holding lables for each RSS feed
	this.feedurls=[]
	this.feeds=[] //array holding combined RSS feeds' entries from Feed API (result.feed.entries)
	this.feedsfetched=0 //number of feeds fetched
	this.feedlimit=4 //Erakutsiko den berri kopurua
	document.write('<div id="berriak"></div>') //output div to contain RSS entries
	this.feedcontainer=document.getElementById("berriak")
	this.itemcontainer="<li>" //default element wrapping around each RSS entry item
}

gfeedfetcher.prototype.addFeed=function(label, url){
	this.feedlabels[this.feedlabels.length]=label
	this.feedurls[this.feedurls.length]=url
}


gfeedfetcher.prototype.setentrycontainer=function(containerstr){  //set element that should wrap around each RSS entry item
this.itemcontainer="<"+containerstr.toLowerCase()+">"
}

gfeedfetcher.prototype.init=function(){
	this.feedsfetched=0 //reset number of feeds fetched to 0 (in case init() is called more than once)
	this.feeds=[] //reset feeds[] array to empty (in case init() is called more than once)
	this.feedcontainer.innerHTML='Berriak kargatzen...'
	var displayer=this
	for (var i=0; i<this.feedurls.length; i++){ //loop through the specified RSS feeds' URLs
		var feedpointer=new google.feeds.Feed(this.feedurls[i]) //create new instance of Google Ajax Feed API
		//feedpointer.setNumEntries(this.feedlimit) //hau nik gehitua
		feedpointer.setNumEntries(10) //Legazpiko udalekoa konpondu bitartean... 
		feedpointer.load(function(r){displayer._fetch_data_as_array(r)}) //call Feed.load() to retrieve and output RSS feed
	}
}


gfeedfetcher._formatdate=function(datestr){
//ordua gehitu nahi ezkero hemen aldatu
	var itemdate=new Date(datestr)
	var urtea=itemdate.getFullYear()
	var hila=itemdate.getMonth()+1
	if (hila<10) hila="0" +hila //digitu bateko zkiei '0' jarri aurretik
	else hila=hila
	var eguna=itemdate.getDate()
	if (eguna<10) eguna="0" +eguna //digitu bateko zkiei '0' jarri aurretik
	else eguna=eguna
	var data=urtea + "/" + hila + "/" + eguna //format: yyyy/month/day 

	return "<span style='color:gray; font-size: 90%'>"+data+"</span>" //dataren formatua hemen zehaztuko dugu
}

gfeedfetcher._sortarray=function(arr){ //beti dataren arabera
	//sort by "publishedDate" property (using error handling, as "publishedDate" may not be a valid date str if an error has occured while getting feed
		try{
			arr.sort(function(a,b){return new Date(b.publishedDate)-new Date(a.publishedDate)})
		}
		catch(err){}
}

gfeedfetcher.prototype._fetch_data_as_array=function(result){
	var thisfeed=(!result.error)? result.feed.entries : "" //get all feed entries as a JSON array or "" if failed
	if (thisfeed=="") //if error has occured fetching feed
		alert("Google Feed API Error: "+result.error.message)
	for (var i=0; i<thisfeed.length; i++) //For each entry within feed
		result.feed.entries[i].ddlabel=this.feedlabels[this.feedsfetched] //extend it with a "ddlabel" property
	this.feeds=this.feeds.concat(thisfeed) //add entry to array holding all feed entries
	this._signaldownloadcomplete() //signal the retrieval of this feed as complete (and move on to next one if defined)
}

gfeedfetcher.prototype._signaldownloadcomplete=function(){
	this.feedsfetched+=1
	if (this.feedsfetched==this.feedurls.length) //if all feeds fetched
		this._displayresult(this.feeds) //display results
}


gfeedfetcher.prototype._displayresult=function(feeds){
	var rssoutput=(this.itemcontainer=="<li>")? "<ul>\n" : ""
	gfeedfetcher._sortarray(feeds, this.sortstring)
	for (var i=0; i<this.feedlimit; i++){ //nik gehitua
//	for (var i=0; i<feeds.length; i++){
		var itemtitle="<a href=\"" + feeds[i].link + "\" target=\"" + this.linktarget + "\" class=\"titlefield\">" + feeds[i].title + "</a>"
		var itemlabel="<span style='color:brown; font-size: 90%'>["+this.feeds[i].ddlabel+"]</span>"
		var itemdate=gfeedfetcher._formatdate(feeds[i].publishedDate)
		rssoutput+=this.itemcontainer + itemtitle + " " + itemlabel + " " + itemdate + this.itemcontainer.replace("<", "</") + "\n\n"
	}
	rssoutput+=(this.itemcontainer=="<li>")? "</ul>" : ""
	this.feedcontainer.innerHTML=rssoutput
}