added notifications

frontend/src/download.js

@@ -1,4 +1,5 @@
 const FileReceiver = require('./fileReceiver');
+const { notify } = require('./utils');
 const $ = require('jquery');
 
 $(document).ready(function() {
@@ -16,6 +17,7 @@ $(document).ready(function() {
 
       if (percentComplete === 100) {
         fileReceiver.removeAllListeners('progress');
+        notify('Your download has finished.');
         btn.text('Download complete!');
         btn.attr('disabled', 'true');
       }

frontend/src/fileSender.js

@@ -1,5 +1,5 @@
 const EventEmitter = require('events');
-const { ivToStr } = require('./utils');
+const { ivToStr, notify } = require('./utils');
 
 class FileSender extends EventEmitter {
   constructor(file) {
@@ -23,7 +23,7 @@ class FileSender extends EventEmitter {
         }
 
         if (xhr.status === 200) {
-          console.log('The file was successfully deleted.');
+          console.log('The file was successfully deleted.')
         } else {
           console.log('The file has expired, or has already been deleted.');
         }

frontend/src/upload.js

@@ -1,4 +1,5 @@
 const FileSender = require('./fileSender');
+const { notify } = require('./utils')
 const $ = require('jquery');
 
 $(document).ready(function() {
@@ -84,6 +85,9 @@ $(document).ready(function() {
       $('#upload-progress').show();
       $('#upload-filename').innerHTML += file.name;
       progress.innerText = `Progress: ${percentComplete}%`;
+      if (percentComplete === 100) {
+        notify('Your upload has finished.');
+      }
     });
     fileSender.upload().then(info => {
       const url = info.url.trim() + `#${info.secretKey}`.trim();

frontend/src/utils.js

@@ -20,7 +20,21 @@ function strToIv(str) {
   return iv;
 }
 
+function notify(str) {
+  if (!("Notification" in window)) {
+    return;
+  } else if (Notification.permission === 'granted') {
+    new Notification(str)
+  } else if (Notification.permission !== 'denied') {
+    Notification.requestPermission(function(permission) {
+      if (permission === 'granted')
+        new Notification(str);
+    })
+  }
+}
+
 module.exports = {
   ivToStr,
-  strToIv
+  strToIv,
+  notify
 };