notification support

app.py

@@ -6,6 +6,7 @@ import requests.auth
 import os
 import base64
 from typing import Dict, Any, Tuple, Union
+from pywebpush import webpush, WebPushException
 
 from lib.datetime import filter_accounts_next_30_days, filter_accounts_expired
 from lib.reqs import (get_urls, get_user_accounts, add_user_account,
@@ -90,6 +91,27 @@ def index() -> Union[Response, str]:
         return redirect(url_for("home"))
     return render_template("index.html")
 
+@app.route('/vapid-public-key')
+def vapid_public_key():
+    """Provides the VAPID public key to the client."""
+    return jsonify({'public_key': app.config['VAPID_PUBLIC_KEY']})
+
+@app.route('/save-subscription', methods=['POST'])
+def save_subscription():
+    """Saves a push notification subscription."""
+    if not session.get("logged_in"):
+        return jsonify({'error': 'Unauthorized'}), 401
+
+    subscription_data = request.get_json()
+    if not subscription_data:
+        return jsonify({'error': 'No subscription data received'}), 400
+
+    # Here you would typically save the subscription to a database
+    # For this example, we'll just store it in the session
+    session['push_subscription'] = subscription_data
+    print(f"Subscription saved for user: {session['username']}")
+    return jsonify({'success': True})
+
 @app.route("/home")
 @cache.cached(timeout=60)
 def home() -> str:

templates/base.html

@@ -74,7 +74,10 @@
         }
 
         function subscribeUser(registration) {
-            const applicationServerKey = urlB64ToUint8Array('{{ config.VAPID_PUBLIC_KEY }}');
+            fetch('http://localhost:3001/vapid-public-key')
+                .then(response => response.json())
+                .then(data => {
+                    const applicationServerKey = urlB64ToUint8Array(data.public_key);
                     registration.pushManager.subscribe({
                         userVisibleOnly: true,
                         applicationServerKey: applicationServerKey
@@ -84,6 +87,7 @@
                     }).catch(function(err) {
                         console.log('Failed to subscribe the user: ', err);
                     });
+                });
         }
 
         function saveSubscription(subscription) {