Replace the messages of a special user with a tiny red bar
// ==UserScript==
// @name Slack user censor
// @version 1.0.0
// @grant none
// @author github.com/geezee
// @description Replace the messages of a special user with a tiny red bar
// @match https://app.slack.com/*
// @license GPLv3
// @namespace https://greasyfork.org/users/387744
// ==/UserScript==
const userId = ""; // user id can be retrieved from data-message-sender attribute on .c-message__sender_link
const targetInstanceName = ""; // the name of the workplace to run this script on
const style = "background:rgba(255,50,50,0.1); padding: 3px 20px; font-size: 8px;"; // the style of the red bar
const blockMsg = "Message blocked";
const hoverMsg = "read"; // if you don't want to read the message when hovering then set this to an empty string
function blockMessage(msg) {
const bodyContainer = msg.querySelector(".c-message__body");
if (bodyContainer == null) return;
const body = bodyContainer.innerHTML;
msg.innerHTML = '<div style="' + style + '">'
+ '<a href="#" data-message-sender="' + userId + '"></a>'
+ blockMsg
+ ' - <abbrv class="c-message__contents__toblock">' + hoverMsg + '</abbrv></div>';
msg.querySelector(".c-message__contents__toblock").title = body;
}
function hideMessages() {
const messages = Array.from(document.querySelectorAll(".c-message"));
for (var i=0; i<messages.length; i++) {
var msg = messages[i];
// make sure the message has an author and it matches the troll's id
const senderLink = msg.querySelector("a.c-message__sender_link");
if (senderLink == null) continue;
const sender = senderLink.dataset.messageSender;
if (sender != userId) continue;
// replace the message with a block notice
blockMessage(msg);
// search for adjacent messages
while (messages[i+1].classList.contains("c-message--adjacent")) {
i++;
blockMessage(messages[i]);
}
}
}
setTimeout(function() {
const instanceName = document.querySelector(".p-classic_nav__team_header__team__name").innerHTML;
if (instanceName != targetInstanceName) return;
document.querySelector(".p-workspace__primary_view").addEventListener("DOMSubtreeModified", () => {
setTimeout(hideMessages, 1000);
});
hideMessages();
}, 2000);