Microsoft Teams Notifications

Creates browser notifications for the Web-based Teams application. Useful in Linux (in Linux notifications do not work). Tested in Chrome 66.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Microsoft Teams Notifications
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Creates browser notifications for the Web-based Teams application. Useful in Linux (in Linux notifications do not work). Tested in Chrome 66.
// @author       David López Castellote
// @match        https://teams.microsoft.com/*
// @grant        none
// ==/UserScript==
(function() {
    'use strict';

    function notifyMe(numberOfMessages) {
        // Let's check if the browser supports notifications
        if (!("Notification" in window)) {
            alert("Este navegador no soporta notificaciones de escritorio.");
        }

        // Let's check whether notification permissions have already been granted
        else if (Notification.permission === "granted") {
            // If it's okay let's create a notification
            createNotification(numberOfMessages);
        }

        // Otherwise, we need to ask the user for permission
        else if (Notification.permission !== "denied") {
            Notification.requestPermission(function(permission) {
                // If the user accepts, let's create a notification
                if (permission === "granted") {
                    createNotification(numberOfMessages);
                }
            });
        }

    }

    function createNotification(numberOfMessages) {
        var title = "Teams Online";
        var options = {
            body: "Tienes " + numberOfMessages + " nuevas notificaciones.",
            icon: document.querySelector('link[rel="icon"]').href,
            requireInteraction: true
        };
        var notification = new Notification(title, options);
        notification.onclick = function() {
            window.focus();
        };
    }


    function setTitleObserver() {
        console.log('Activando notificaciones de Teams...');
        requestNotificationsPermission();
        var target = document.querySelector('head > title');
        var observer = new window.WebKitMutationObserver(function(mutations) {
            mutations.forEach(function(mutation) {
                var newTitle = mutation.target.textContent;
                var res;
                try {
                    res = newTitle.match(/(?<=\().+?(?=\))/);
                }
                catch( e ) {
                    res = newTitle.match(/\(([^)]+)\)/);
                }
                if (res && res[0] && res[0] && document.hidden) {
                    notifyMe(res[0]);
                    return false;
                }
            });
        });
        observer.observe(target, {
            subtree: true,
            characterData: true,
            childList: true
        });

    }

    function requestNotificationsPermission() {
        Notification.requestPermission().then(function(result) {
            console.log('Permiso para notificaciones de Teams: ' + result);
        });
    }

    function exitFromCurrentChat() {
        setInterval( function() {
            if( document.hidden ) {
                document.querySelector('ul[data-tid="active-chat-list"] li:nth-last-child(2) a').click();
            }
        }, 30000 );
    }

    setTitleObserver();
    exitFromCurrentChat();
})();