// ==UserScript==
// @name         Discord Keyword Notification
// @namespace    http://tampermonkey.net/
// @version      1.0.6
// @license      GNU AGPLv3
// @author       jcunews
// @description  Displays a browser notification whenever a user mentions specific textual word(s) in a channel. The script must be manually edited to configure the keywords.
// @match        *://discordapp.com/*
// @match        *://discord.com/*
// @grant        none
// ==/UserScript==
(function() {
//=== CONFIGURATION BEGIN ===
//maximum duration to display notification
var notificationDuration = 5000; //in milliseconds. 1000ms = 1 second. 0 or less = disable auto-dismiss notification.
//keywords are specified as regular expression. note: the "g" flag is required.
//quick tutorial: https://www.codeproject.com/Articles/199382/Simple-and-Useful-JavaScript-Regular-Expression-Tu
//full tutorial: https://www.regular-expressions.info/tutorial.html
var keywordsRegexp = /\bnotifyme\b|\bspotme\b|\bmatchwordstart|trivia|matchwordend\b|^matchmessagestart|matchmessageend$/gi;
//=== CONFIGURATION END ===
var observer, observing, selector = '[class^="messagesWrapper-"] #chat-messages', matches = [];
function notify(keywords, nt) {
var nt = new Notification("Keyword Notification", {
body: keywords.shift() + " mentions: " + keywords.join(", ")
});
setTimeout(function() {
matches.shift();
}, 500);
if (notificationDuration > 0) setTimeout(function() {
nt.close();
}, notificationDuration);
}
function getMatches(s, r, m) {
r = [];
while (m = keywordsRegexp.exec(s)) r.push(m[0]);
return r;
}
function check(records) {
records.forEach(function(record) {
record.addedNodes.forEach(function(node, m, s) {
if (
node && (!node.previousElementSibling || !(/hasMore/).test(node.previousElementSibling.className)) &&
!node.querySelector('[class*="isSending-"]') && (node = node.querySelector('[class^="markup-"]')) &&
((m = getMatches(node.textContent)).length)
) {
m.unshift(Array.from(node.querySelectorAll("h2 span:first-child")).map(e => e.textContent.trim()).join(" "));
if (!matches.includes(s = m.join("\uffff"))) {
matches.push(s);
notify(m);
}
}
});
});
}
function init(observerInit) {
observerInit = {childList: true, subtree: true};
setInterval(function(ele) {
if (location.pathname.substr(0, 10) === "/channels/") {
if (!observing && (ele = document.querySelector(selector))) {
observing = true;
if (!observer) observer = new MutationObserver(check);
observer.observe(ele, observerInit);
}
} else if (observing) {
observer.disconnect();
observing = false;
}
}, 500);
}
if (window.Notification) {
Notification.requestPermission().then(function() {
if (Notification.permission === "granted") {
init();
} else alert("Access to Browser Notification feature is not granted by user.\nKeyword notification can not be displayed.");
});
} else alert("Browser Notification feature is disabled or not supported.");
})();