/**
 * Add actual cost in `Normalized instance hours` column
 *
 * Q: How do you calculate the Normalized Instance Hours displayed on the
 * console ?
 *
 * On the AWS Management Console, every cluster has a Normalized Instance Hours
 * column that displays the approximate number of compute hours the cluster has
 * used. Normalized Instance Hours are hours of compute time based on the
 * standard of 1 hour of m1.small usage = 1 hour normalized compute time.
 *
 * As of 2016-10-20, m1.small costs $0.044/hr
 */
function addNormalizedInstanceHoursCost() {
    var tbody = $('.GF2SJOLOO');
    // console.log(tbody);
    if (! tbody) {
        console.log("Didn't find tbody w/ class `GF2SJOLOO`");
        return;
    }
    var trs = tbody.find('tr');
    if (! trs) {
        console.log("Didn't find tbody trs");
        return;
    }
    console.log("Adding normalized instance hours costs for " + trs.length + " clusters ...");
    $.each(trs, function(index, tr) {
        var td = $(this).find('td').last();
        var hours = td.text();
        var cost = (0.044 * hours).toFixed(2);
        var tdStr = hours + " ($" + cost + ")";
        td.text(tdStr);
    })
}

function main() {
    console.log("Running `~/.js/console.aws.amazon.com.js ...");
    // These things load asynchronously, so wait a few ticks before kicking it off
    window.setTimeout(addNormalizedInstanceHoursCost, 3000);
}

main();