restartbuild.js

var PASSED = 'passed',
    STARTED = 'started',
    FAILED = 'failed',
    ERRORED = 'errored',
    CANCELED = 'canceled',
    POLL_PERIOD = 5000,
    MAX_MINUTES = 22;

function icon(which) {
    return $('.icon.icon-status.' + which + '[title="' + which + '"]')
}

function has(which) {
    return icon(which).length > 0;
}

var hasBeen = has;

function restartBuild() {
    console.log('Restarted build!');
    $('.button-circle[title="Restart Build"]').click();
}

function cancelBuild() {
    console.log('Canceled build!');
    $('.button-circle[title="Cancel Build"]').click();
}

function elapsedMinutes() {
    var timeString = $('div.tile-additional > ul.repo-main-info > li[title]').first().attr('title');
    var match = /(\d+) min \d+ sec/g.exec(timeString);
    return match ? +match[1] : 0;
}

function win() {
    alert(PASSED);
    document.title = PASSED;
    console.log('Passed!');
}

(function pollUntilSuccess() {
    if (has(PASSED)) {
        return win();
    }

    if (has(FAILED) || has(ERRORED) || hasBeen(CANCELED)) {
        restartBuild();
    } else if (elapsedMinutes() > MAX_MINUTES) {
        cancelBuild();
    } else {
        console.log('Waiting...');
    }
    setTimeout(pollUntilSuccess, POLL_PERIOD);
})();