Co-Op Spotter

coopspotter.user.js

// ==UserScript==
// @name	Co-Op Spotter
// @namespace	https://gist.github.com/aggieben
// @downloadURL	https://gist.github.com/raw/3094482/coopspotter.user.js
// @updateURL	https://gist.github.com/raw/3094482/coopspotter.user.js
// @description Script to audibly alert the user to changes in the main content div of Harvest Co-op.
// @match 	http://*coopapp.com/*
// @match	https://*coopapp.com/*
// @resource	alertSound http://goo.gl/IDn7c
// @resource	alertSoundAll http://goo.gl/sQgvK
// @resource    cobotSound http://goo.gl/TvEJG
// @require	http://code.jquery.com/jquery.min.js
// @version	1.2.0
// ==/UserScript==
// Settings for users to modify.
var setting_freq = 1;  // this value will depend on how frequently the site will update
var setting_vol = 1.0; // this value may need to change, depending on what alert sound is used
//////////////////////////////////////////////////////////////////////////////////////
var snd = null;
var filters = {};
GM_log("Loaded Co-Op Spotter " + GM_info.script.version);
if (html5_audio()) {
    var res = "data:audio/mp3;base64,";
    snd = new Audio(res + GM_getResourceURL("alertSound"));
    snd.volume = setting_vol;
    snd.load();
    filters["cobot"] = new Audio(res + GM_getResourceURL("cobotSound"));
    filters["all"] = new Audio(res + GM_getResourceURL("alertSoundAll"));
    
    var filter_count = 0;
    for (f in filters) {
        filters[f].load();
        filter_count++;
    }
    GM_log("loaded " + filter_count + " filters.");
}
else {
    GM_log("something's wrong; you can't play HTML5 audio");
}
var g_latestNode = $(".entry").first().attr('id');
setInterval(function() {
    var latestNode = $(".entry").first().attr('id');
    if (latestNode != g_latestNode)
    {
        GM_log("new entry!");
        if (!processFilters(latestNode)) {
            snd.play();
        }
        g_latestNode = latestNode;
    }
}, setting_freq*1000);
function processFilters(nodeId) {
    GM_log("processing filters for " + nodeId);
    if($("#" + nodeId).hasClass("user_0")) {
        GM_log("matched Cobot user on " + nodeId);
        filters["cobot"].play();
        return true;
    }
    var nodeText = $("#display_text_" + nodeId).text();
    if (nodeText.toLowerCase().match("@all")) {
        GM_log("matched \'all\' filter on " + nodeId);
        filters["all"].play();
        return true;
    }
}
function html5_audio(){
    var a = document.createElement('audio');
    return !!(a.canPlayType && a.canPlayType('audio/mpeg;').replace(/no/, ''));
}