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Discord Keyword Notification

Displays a browser notification whenever a user mentions specific textual word(s) in a channel.

当前为 2018-10-20 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Discord Keyword Notification
  3. // @namespace    http://tampermonkey.net/
  4. // @license      GNU AGPLv3
  5. // @version      1.0.1
  6. // @description  Displays a browser notification whenever a user mentions specific textual word(s) in a channel.
  7. // @author       jcunews
  8. // @match        https://discordapp.com/*
  9. // @grant        none
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.  
  14.   //=== CONFIGURATION BEGIN ===
  15.  
  16.   //maximum duration to display notification
  17.   var notificationDuration = 5000; //in milliseconds. 1000ms = 1 second. 0 or less = disable auto-dismiss notification.
  18.  
  19.   //keywords are specified as regular expression. note: the "g" flag is required.
  20.   //quick tutorial: https://www.codeproject.com/Articles/199382/Simple-and-Useful-JavaScript-Regular-Expression-Tu
  21.   //full tutorial: https://www.regular-expressions.info/tutorial.html
  22.   var keywordsRegexp = /\bnotifyme\b|\bspotme\b|\bmatchwordstart|matchwordend\b|^matchmessagestart|matchmessageend$/gi;
  23.  
  24.   //=== CONFIGURATION END ===
  25.  
  26.   var observer, observing, selector = '[class^="messagesWrapper-"] [class^="messages-"]', matches = [];
  27.   function notify(keywords, nt) {
  28.     var nt = new Notification("Keyword Notification", {
  29.       body: keywords.shift() + " mentions: " + keywords.join(", ")
  30.     });
  31.     setTimeout(function() {
  32.       matches.shift();
  33.     }, 500);
  34.     if (notificationDuration > 0) setTimeout(function() {
  35.       nt.close();
  36.     }, notificationDuration);
  37.   }
  38.  
  39.   function getMatches(s, r, m) {
  40.     r = [];
  41.     while (m = keywordsRegexp.exec(s)) r.push(m[0]);
  42.     return r;
  43.   }
  44.  
  45.   function check(records) {
  46.     records.forEach(function(record) {
  47.       record.addedNodes.forEach(function(node, m, s) {
  48.         if (node && (node = node.querySelector('[class^="markup-"]')) && ((m = getMatches(node.textContent)).length)) {
  49.           m.unshift(node.querySelector("h2 span").textContent.trim());
  50.           if (!matches.includes(s = m.join("\uffff"))) {
  51.             matches.push(s);
  52.             notify(m);
  53.           }
  54.         }
  55.       });
  56.     });
  57.   }
  58.  
  59.   function init(observerInit) {
  60.     observerInit = {childList: true, subtree: true};
  61.     setInterval(function(ele) {
  62.       if (location.pathname.substr(0, 10) === "/channels/") {
  63.         if (!observing && (ele = document.querySelector(selector))) {
  64.           observing = true;
  65.           if (!observer) observer = new MutationObserver(check);
  66.           observer.observe(ele, observerInit);
  67.         }
  68.       } else if (observing) {
  69.         observer.disconnect();
  70.         observing = false;
  71.       }
  72.     }, 500);
  73.   }
  74.  
  75.   if (window.Notification) {
  76.     Notification.requestPermission().then(function() {
  77.       if (Notification.permission === "granted") {
  78.         init();
  79.       } else alert("Access to Browser Notification feature is not granted by user.\nKeyword notification can not be displayed.");
  80.     });
  81.   } else alert("Browser Notification feature is disabled or not supported.");
  82.  
  83. })();