var gfeedfetcher_loading_image = "/~/media/customer_comcast_com/Images/indicator.ashx"

function gfeedfetcher(divid, divClass, linktarget) {
    this.linktarget = linktarget || ""
    this.feedlabels = []
    this.feedurls = []
    this.feeds = []
    this.feedsfetched = 0
    this.feedlimit = 5
    this.sortstring = "publishedDate"
    this.feedcontainer = document.getElementById(divid)
    this.itemcontainer = "<li>"
}
gfeedfetcher.prototype.addFeed = function(label, url) {
    this.feedlabels[this.feedlabels.length] = label
    this.feedurls[this.feedurls.length] = url
}
gfeedfetcher.prototype.filterfeed = function(feedlimit, sortstr) {
    this.feedlimit = feedlimit
    if (typeof sortstr != "undefined")
        this.sortstring = sortstr
}
gfeedfetcher.prototype.setentrycontainer = function(containerstr) {
    this.itemcontainer = "<" + containerstr.toLowerCase() + ">"
}
gfeedfetcher.prototype.initialize = function() {
    this.feedsfetched = 0
    this.feeds = []
    this.feedcontainer.innerHTML = '<p><img class="textmiddle" src="' + gfeedfetcher_loading_image + '" /> Loading forum feed...</p>'
    var displayer = this
    for (var i = 0; i < this.feedurls.length; i++) {
        var feedpointer = new google.feeds.Feed(this.feedurls[i])
        var items_to_show = (this.feedlimit <= this.feedurls.length) ? 1 : Math.floor(this.feedlimit / this.feedurls.length)
        if (this.feedlimit % this.feedurls.length > 0 && this.feedlimit > this.feedurls.length && i == this.feedurls.length - 1)
            items_to_show += (this.feedlimit % this.feedurls.length)
        feedpointer.setNumEntries(items_to_show)
        feedpointer.load(function(label) {
            return function(r) {
                displayer._fetch_data_as_array(r, label)
            }
        } (this.feedlabels[i]))
    }
}
gfeedfetcher._formatdate = function(datestr) {
    var itemdate = new Date(datestr)
    var parseddate = itemdate.toLocaleString();
    return parseddate
}
gfeedfetcher._sortarray = function(arr, sortstr) {
    var sortstr = (sortstr == "label") ? "title" : sortstr
    if (sortstr == "title") {
        arr.sort(function(a, b) {
            var fielda = a[sortstr].toLowerCase()
            var fieldb = b[sortstr].toLowerCase()
            return (fielda < fieldb) ? -1 : (fielda > fieldb) ? 1 : 0
        })
    }
    else {
        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, ddlabel) {
    var thisfeed = (!result.error) ? result.feed.entries : ""
    if (thisfeed == "") {
        alert("Some form posts could not be loaded: " + result.error.message)
    }
    for (var i = 0; i < thisfeed.length; i++) {
        result.feed.entries[i].ddlabel = ddlabel
    }
    this.feeds = this.feeds.concat(thisfeed)
    this._signaldownloadcomplete()
}
gfeedfetcher.prototype._signaldownloadcomplete = function() {
    this.feedsfetched += 1
    if (this.feedsfetched == this.feedurls.length)
        this._displayresult(this.feeds)
}
gfeedfetcher.prototype._displayresult = function(feeds) {
    var rssoutput = (this.itemcontainer == "<li>") ? "<ul id='latestQuestions'>\n" : ""
    gfeedfetcher._sortarray(feeds, this.sortstring)
    for (var i = 0; i < feeds.length; i++) {
        var itemtitle = "<h4><a href=\"" + feeds[i].link + "\" target=\"" + this.linktarget + "\">" + feeds[i].title + "</a></h4>";
        var itemdescription = "<p>" + feeds[i].contentSnippet + " <a href='" + feeds[i].link + "' target=\"" + this.linktarget + "\">read more</a></p>";
        var itemdate = "<p class='date'>Updated on " + gfeedfetcher._formatdate(feeds[i].publishedDate) + " by " + feeds[i].author + "</p>";
        rssoutput += this.itemcontainer + itemtitle + itemdescription + itemdate + this.itemcontainer.replace("<", "</") + "\n\n"
    }
    rssoutput += (this.itemcontainer == "<li>") ? "</ul>" : ""
    this.feedcontainer.innerHTML = rssoutput;
}