User script for Google Inbox Fluid App to update the Badge and send notifications on new Emails

Inbox-Fluid.js

var gUnreadMails = new Set()

setInterval(checkUnread, 3000)

function checkUnread() {
    updateBadge()
    notify()
}

function updateBadge() {
    var count = document.querySelectorAll('div.qG').length
    window.fluid.dockBadge = (count >= 1) ? count : ''
}

function notify() {
    var unreadSubjects = document.querySelectorAll('div.bg.qG > span')
    var unreadAuthors = document.querySelectorAll('div.hY.lq > div.rw > span')
    var unreadBodies = document.querySelectorAll('div.g6 > span')
  
    Array.prototype.slice.call(unreadSubjects)
        .map(function(v, i) {
            var subject = v.textContent
            var author = unreadAuthors[i].textContent
            var body = unreadBodies[i].textContent
            return {author: author, subject: subject, body: body}
        })
        .forEach(function(mail) {
            var hash = mail.author + mail.subject + mail.body
            if (!gUnreadMails.has(hash)) {
                gUnreadMails.add(hash)
                sendNotification(mail.author, {body: mail.subject})
            }
        })
}

function sendNotification(msg, opts) {
    if (Notification.permission === 'granted') {
        var notification = new Notification(msg, opts);
    } else if (Notification.permission !== 'denied') {
        Notification.requestPermission(function (permission) {
            if (permission === 'granted') {
                sendNotification(msg, opts)
            }
        })
    }
}

Thank you for creating this script. It's working for me. :)