[issue #5] Adding manifest.json functionality for chrome

webpush/templates/webpush.html

@@ -5,5 +5,7 @@
 
   <script id="service-worker-js" type="text/javascript" src="{% static 'webpush/webpush_serviceworker.js' %}"></script>
 
+  <link rel="manifest" href="{% url 'webpush_manifest_json' %}">
+
   <div id="webpush-data" {% if group %} data-group="{{ group }}" {% endif %} data-url="{{ url }}" hidden></div>
 {% endif %}

webpush/urls.py

@@ -4,4 +4,5 @@
 
 urlpatterns = [
     url(r'^save_information', views.save_info, name='save_webpush_info'),
+    url(r'^manifest', views.generate_manifest, name='webpush_manifest_json'),
 ]

webpush/utils.py

@@ -1,6 +1,6 @@
-# import requests
 from .models import PushInformation, Group
 
+from django.conf import settings
 from django.forms.models import model_to_dict
 
 from pywebpush import WebPusher
@@ -24,7 +24,12 @@ def send_notification_to_group(group_name, payload, ttl=0):
 def _send_notification(push_info, payload, ttl):
     subscription = push_info.subscription
     subscription_data = _process_subscription_info(subscription)
-    req = WebPusher(subscription_data).send(data=payload, ttl=ttl)
+    # Check if GCM info is provided in the settings
+    if hasattr(settings,'WEBPUSH_SETTINGS'):
+        gcm_key = settings.WEBPUSH_SETTINGS.get('GCM_KEY')
+    else:
+        gcm_key = None
+    req = WebPusher(subscription_data).send(data=payload, ttl=ttl, gcm_key=gcm_key)
     return req
 
 def _process_subscription_info(subscription):
@@ -35,5 +40,5 @@ def _process_subscription_info(subscription):
 
     return {
         "endpoint": endpoint,
-        "keys": {"p256dh": str(p256dh), "auth": str(auth)}
+        "keys": {"p256dh": p256dh, "auth": auth}
     }

webpush/views.py

@@ -1,15 +1,16 @@
 import json
 
+from django.conf import settings
 from django.core.exceptions import FieldError
-from django.http import HttpResponse
+from django.http import HttpResponse, JsonResponse
 from django.shortcuts import render
 from django.views.decorators.csrf import csrf_exempt
-from django.views.decorators.http import require_POST
+from django.views.decorators.http import require_POST, require_GET
 
+from .config import MANIFEST
 from .forms import WebPushForm, SubscriptionForm
 
 
-
 @require_POST
 @csrf_exempt
 def save_info(request):
@@ -51,6 +52,14 @@ def save_info(request):
     return HttpResponse(status=400)
 
 
+@require_GET
+def generate_manifest(request):
+    if hasattr(settings,'WEBPUSH_SETTINGS'):
+        return JsonResponse(MANIFEST)
+    else:
+        return HttpResponse(status=404)
+
+
 def process_subscription_data(post_data):
     """Process the subscription data according to out model"""
     subscription_data = post_data.pop("subscription", {})