mark-monteiro/drumpfinator

// Wait for document ready before executing main function
var readyStateCheckInterval = setInterval(function() {
    if (document.readyState === "complete") {
        clearInterval(readyStateCheckInterval);
        main();
    }
}, 10);

function main() {
    // Replace page title
    document.title = generateReplacment(document.title);

    // Replace all initial text on page
    replaceNodeText(document.body);

    // Create a mutation observer to monitor the DOM for changes
    var observer = new MutationObserver(function(mutations) {
        mutations.forEach(function(mutation) {
            Array.prototype.slice.call(mutation.addedNodes).forEach(replaceNodeText);
        });
    });

    // Configure and start the observer
    observer.observe(document.body, {
        childList: true,
        subtree: true,
        attributes: false,
        characterData: false
    });
}

function replaceNodeText(node) {

    // Do nothing for nodes contained in a Google Docs editor (sorry I.E. no support for you)
    if(node.closest && node.closest('.kix-appview')) return;

    // Create a tree walker to traverse all text nodes
    var walker = document.createTreeWalker(
        node,
        NodeFilter.SHOW_TEXT,
        {
            acceptNode: function(node) {
                // Reject contentEditable nodes
                return (node.parentElement && node.parentElement.isContentEditable) ?
                    NodeFilter.FILTER_SKIP :
                    NodeFilter.FILTER_ACCEPT;
            }
        },
        false
    );

    // Replace all text nodes
    var textNode;
    while(textNode = walker.nextNode()) {
        textNode.nodeValue = generateReplacment(textNode.nodeValue);
    }
}

function generateReplacment(text) {
    const regex = /Donald( (John|J|J.))? Trump/gi;

    const adjectives = [
        "Orange",
        "Bulbous",
        "Narcissistic",
        "Obnoxious",
        "Delusional",
        "Putrid",
        "Greasy",
        "Decaying",
        "Wilting",
        "Balding",
        "Droopy",
        "Petulent",
        "Toupeed",
        "Bleached",
        "Pumpkin-Spiced",
        "Mouth-Eyed",
        "Dangerously Cheesy",
        "Shrivelled",
        "Melting",
        "Parasitic",
        "Sexually Frustrated",
        "Racist",
        "Sniffling",
        "Gaseous",
        "Flabby",
        "Gelatenous",
        "Machiavellian",
        "Irritable",
        "Tempermental",
        "Fossilized",
        "Spray-Tanned",
        "Malignant",
        "Carrot-Topped",
        "Senseless",
        "Screaming",
        "Egotistical",
        "Belligerent",
        "Grandiloquent",
        "Illiterate",
        "Short-Fingered",
        "Dissonant",
        "Larval",
        "Maladroit"

    ];

    const prefixAdjectives = [
        "Large",
        "Tiny"
    ].concat(adjectives);

    const suffixAdjectives = [
    ].concat(adjectives);

    const nouns = [
        "Corn Cob",
        "Hand Gnome",
        "Butternet Squash",
        "Oompa Loompa",
        "Man-Baby",
        "Canadian Goose",
        "Clown",
        "Sweet Potato",
        "Orangutan",
        "Dried Apricot",
        "Mustard Tiger",
        "Fish Frog",
        "Corn Dog",
        "Marshmallow",
        "Traffic Cone",
        "Cheese Puff",
        "Jack-O-Lantern",
        "Scarecrow",
        "Neanderthal",
        "Haystack",
        "Taco Bowl",
        "Plantar Wart",
        "Mr. Potato Head",
        "Dorito",
        "Whale Blubber",
        "Block of Aged Cheddar",
        "Rumpelstiltskin",
        "Tangerine",
        "Hot Dog Casing",
        "Cheese Grit",
        "Covfefe",
        "Malfunctioning Dalek",
        "Russian Poodle",
        "Beelzebub",
        "Rum Ham",
        "Abradolf Lincler",
        "Leaning Tower Of Cheeza",
        "Trumpy McTrumpface",
        "Dumpster Fire",
        "SCROTUS",
        "Annoying Orange",
        "Jizz Trumpet",
        "Bagpipe"
    ];

    // TODO: perform with a single replace command
    return text.replace(regex, getName()).replace("Trump", "Drumpf");

    function getName() {
        var prefix = getRandomElement(prefixAdjectives);
        var suffix;
        do suffix = getRandomElement(adjectives); while(suffix === prefix);
        return prefix + " " + suffix + " " + getRandomElement(nouns);
    }

    function getRandomElement(array) {
        return array[Math.floor(Math.random()*array.length)];
    }
}