Discord - Hide Blocked Messages.js

var quit = false; 
var interval = 100;
var injected = false;
var processed = [];

function injectCss() {
    var style = document.createElement('style');
    style.type = 'text/css';
    style.appendChild(document.createTextNode('.stfu { display: none!important; }'));

    var head = document.head || document.getElementsByTagName('head')[0];
    head.appendChild(style);
    injected = true;
}

function clearBlockedMessages() {
    var blocked = document.querySelectorAll("div[class^='blockedMessageText-']");
    if (blocked) {
        for (var i = 0; i < blocked.length; i++) {
            var container = findContainer(blocked[i]);
            if (container && (!processed.includes(container.className))) {
                container.classList.add("stfu");
                processed.push(container.className);
            }
        }
    }
}

function findContainer(el) {
    var previous = el.parentElement;
    if (previous == null) return null;

    if (previous.hasAttribute("class") && previous.className.match(/^groupStart-/)) {
        if (!previous.className.indexOf('stfu') > -1) {
            return previous;
        } else {
            return null;
        }
    } else {
        return findContainer(previous);
    }
}

var stfuGray = setInterval(function() {
    if (!injected) injectCss();
    if (injected) clearBlockedMessages();

    if (quit)
        clearInterval(stfuGray);
}, interval);