Included the default serviceworker, updated the manifest, Add the default offline page, updated the unit test, Redme

CHANGELOG.md

@@ -10,4 +10,17 @@
  - Add Oritentation on manifest.json
  - Add tox
  - Add Coverage
+ 
+ 
+ ## 1.0.1
+ 
+ - Add django 2 requirement
+ - Use templateviews instead of own implementations
+ - Add content_types
+ - Update `README.md`
+ - Add `PWA_APP_FETCH_URL` 
+ - Add default_config in `__init__.py`
+ - Add basic serviceworker
+ - Add default offline page and default icons
+ - Updated the unit tests
  

MANIFEST.in

@@ -1,2 +1,3 @@
 include *.md
-recursive-include pwa/templates *
+recursive-include pwa/templates *
+recursive-include pwa/static *

README.md

@@ -60,11 +60,11 @@ All settings are optional, and the app will work fine with its internal defaults
 
 Add the progressive web app URLs to urls.py:
 ```python
-from django.conf.urls import url, include
+from django.urls import path, include
 
 urlpatterns = [
     ...
-    url('', include('pwa.urls')),  # You MUST use an empty string as the URL prefix
+    path('', include('pwa.urls')),  # You MUST use an empty string as the URL prefix
     ...
 ]
 ```
@@ -86,18 +86,85 @@ While running the Django test server:
 
 1. Verify that `/manifest.json` is being served
 1. Verify that `/serviceworker.js` is being served
+1. Verify that `/offline` is being served
 1. Use the Application tab in the Chrome Developer Tools to verify the progressive web app is configured correctly.
 1. Use the "Add to homescreen" link on the Application Tab to verify you can add the app successfully.
 
+
+The Service Worker
+=====
+By default, the service worker implemented by this app is:
+```js
+// Base Service Worker implementation.  To use your own Service Worker, set the PWA_SERVICE_WORKER_PATH variable in settings.py
+
+var staticCacheName = "django-pwa-v" + new Date().getTime();
+var filesToCache = [
+    '/offline',
+    '/css/django-pwa-app.css',
+    '/images/icons/icon-72x72.png',
+    '/images/icons/icon-96x96.png',
+    '/images/icons/icon-128x128.png',
+    '/images/icons/icon-144x144.png',
+    '/images/icons/icon-152x152.png',
+    '/images/icons/icon-192x192.png',
+    '/images/icons/icon-384x384.png',
+    '/images/icons/icon-512x512.png',
+];
+
+// Cache on install
+self.addEventListener("install", event => {
+    this.skipWaiting();
+    event.waitUntil(
+        caches.open(staticCacheName)
+            .then(cache => {
+                return cache.addAll(filesToCache);
+            })
+    )
+});
+
+// Clear cache on activate
+self.addEventListener('activate', event => {
+    event.waitUntil(
+        caches.keys().then(cacheNames => {
+            return Promise.all(
+                cacheNames
+                    .filter(cacheName => (cacheName.startsWith("django-pwa-")))
+                    .filter(cacheName => (cacheName !== staticCacheName))
+                    .map(cacheName => caches.delete(cacheName))
+            );
+        })
+    );
+});
+
+// Serve from Cache
+self.addEventListener("fetch", event => {
+    event.respondWith(
+        caches.match(event.request)
+            .then(response => {
+                return response || fetch(event.request);
+            })
+            .catch(() => {
+                return caches.match('offline');
+            })
+    )
+});
+```
+
 Adding Your Own Service Worker
 =====
-By default, the service worker implemented by this app is empty.  To add service worker functionality, you'll want to create a `serviceworker.js` or similarly named file, and then point at it using the PWA_SERVICE_WORKER_PATH variable.
+By default, the service worker implemented by this app is empty.  To add service worker functionality, you'll want to create a `serviceworker.js` or similarly named template in a template directory, and then point at it using the PWA_SERVICE_WORKER_PATH variable (PWA_APP_FETCH_URL is passed through).
 
 ```python
-PWA_SERVICE_WORKER_PATH = os.path.join(BASE_DIR, 'my_app', 'serviceworker.js')
+PWA_SERVICE_WORKER_PATH = 'my_app/serviceworker.js'
 
 ```
 
+The offline view
+=====
+By default, the offline view is implemented in `templates/offline.html`
+You can overwrite it in a template directory if you continue using the default `serviceworker.js`.  
+
+
 Feedback
 =====
 I welcome your feedback and pull requests.  Enjoy!

pwa/__init__.py

@@ -0,0 +1 @@
+default_app_config = 'pwa.apps.PwaConfig'

pwa/app_settings.py

@@ -3,8 +3,7 @@ from django.conf import settings
 import os
 
 # Path to the service worker implementation.  Default implementation is empty.
-PWA_SERVICE_WORKER_PATH = getattr(settings, 'PWA_SERVICE_WORKER_PATH',
-                                  os.path.join(os.path.abspath(os.path.dirname(__file__)), 'templates', 'serviceworker.js'))
+PWA_SERVICE_WORKER_PATH = getattr(settings, 'PWA_SERVICE_WORKER_PATH', 'serviceworker.js')
 
 # App parameters to include in manifest.json and appropriate meta tags
 PWA_APP_NAME = getattr(settings, 'PWA_APP_NAME', 'MyApp')
@@ -15,10 +14,39 @@ PWA_APP_BACKGROUND_COLOR = getattr(settings, 'PWA_APP_BACKGROUND_COLOR', '#fff')
 PWA_APP_DISPLAY = getattr(settings, 'PWA_APP_DISPLAY', 'standalone')
 PWA_APP_ORIENTATION = getattr(settings, 'PWA_APP_ORIENTATION', 'any')
 PWA_APP_START_URL = getattr(settings, 'PWA_APP_START_URL', '/')
+PWA_APP_FETCH_URL = getattr(settings, 'PWA_APP_FETCH_URL', '/')
 PWA_APP_ICONS = getattr(settings, 'PWA_APP_ICONS', [
     {
-        'src': '/',
-        'sizes': '160x160'
+        'src': '/static/images/icons/icon-72x72.png',
+        'sizes': '72x72'
+    },
+    {
+        'src': '/static/images/icons/icon-96x96.png',
+        'sizes': '96x96'
+    },
+    {
+        'src': '/static/images/icons/icon-128x128.png',
+        'sizes': '128x128'
+    },
+    {
+        'src': '/static/images/icons/icon-144x144.png',
+        'sizes': '144x144'
+    },
+    {
+        'src': '/static/images/icons/icon-152x152.png',
+        'sizes': '152x152'
+    },
+    {
+        'src': '/static/images/icons/icon-192x192.png',
+        'sizes': '192x192'
+    },
+    {
+        'src': '/static/images/icons/icon-384x384.png',
+        'sizes': '384x384'
+    },
+    {
+        'src': '/static/images/icons/icon-512x512.png',
+        'sizes': '512x512'
     }
 ])
 PWA_APP_DIR = getattr(settings, 'PWA_APP_DIR', 'auto')

pwa/templates/offline.html

@@ -0,0 +1,11 @@
+{% load static %}<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Default offline template</title>
+    <link href="{% static '/css/django-pwa-app.css' %}" rel="stylesheet">
+</head>
+<body>
+<h1>You are currently not connected to any networks.</h1>
+</body>
+</html>

pwa/templates/serviceworker.js

@@ -1,2 +1,53 @@
-// Empty Service Worker implementation.  To use your own Service Worker, set the PWA_SERVICE_WORKER_PATH variable in
-// settings.py
+// Base Service Worker implementation.  To use your own Service Worker, set the PWA_SERVICE_WORKER_PATH variable in settings.py
+
+var staticCacheName = "django-pwa-v" + new Date().getTime();
+var filesToCache = [
+    '/offline',
+    '/static/css/django-pwa-app.css',
+    '/static/images/icons/icon-72x72.png',
+    '/static/images/icons/icon-96x96.png',
+    '/static/images/icons/icon-128x128.png',
+    '/static/images/icons/icon-144x144.png',
+    '/static/images/icons/icon-152x152.png',
+    '/static/images/icons/icon-192x192.png',
+    '/static/images/icons/icon-384x384.png',
+    '/static/images/icons/icon-512x512.png',
+];
+
+// Cache on install
+self.addEventListener("install", event => {
+    this.skipWaiting();
+    event.waitUntil(
+        caches.open(staticCacheName)
+            .then(cache => {
+                return cache.addAll(filesToCache);
+            })
+    )
+});
+
+// Clear cache on activate
+self.addEventListener('activate', event => {
+    event.waitUntil(
+        caches.keys().then(cacheNames => {
+            return Promise.all(
+                cacheNames
+                    .filter(cacheName => (cacheName.startsWith("django-pwa-")))
+                    .filter(cacheName => (cacheName !== staticCacheName))
+                    .map(cacheName => caches.delete(cacheName))
+            );
+        })
+    );
+});
+
+// Serve from Cache
+self.addEventListener("fetch", event => {
+    event.respondWith(
+        caches.match(event.request)
+            .then(response => {
+                return response || fetch(event.request);
+            })
+            .catch(() => {
+                return caches.match('offline');
+            })
+    )
+});

pwa/urls.py

@@ -1,8 +1,10 @@
-from django.conf.urls import url
-from .views import manifest, service_worker
+from django.urls import path
+
+from .views import Manifest, ServiceWorker, OfflineView
 
 # Serve up serviceworker.js and manifest.json at the root
 urlpatterns = [
-    url('^serviceworker.js$', service_worker, name="serviceworker"),
-    url('^manifest.json$', manifest, name="manifest")
+    path('serviceworker.js', ServiceWorker.as_view(), name='serviceworker'),
+    path('manifest.json', Manifest.as_view(), name='manifest'),
+    path('offline', OfflineView.as_view(), name='offline')
 ]

pwa/views.py

@@ -1,17 +1,27 @@
-from django.http import HttpResponse
-from django.shortcuts import render
+from django.views.generic.base import TemplateView
 
 from . import app_settings
 
 
-def service_worker(request):
-    response = HttpResponse(open(app_settings.PWA_SERVICE_WORKER_PATH).read(), content_type='application/javascript')
-    return response
+class ServiceWorker(TemplateView):
+    content_type = 'application/javascript'
+    template_name = app_settings.PWA_SERVICE_WORKER_PATH
+    
+    def get_context_data(self, **kwargs):
+        kwargs['PWA_APP_FETCH_URL'] = app_settings.PWA_APP_FETCH_URL
+        return super().get_context_data(**kwargs)
 
 
-def manifest(request):
-    return render(request, 'manifest.json', {
-        setting_name: getattr(app_settings, setting_name)
-        for setting_name in dir(app_settings)
-        if setting_name.startswith('PWA_')
-    })
+class Manifest(TemplateView):
+    content_type = 'application/json'
+    template_name = 'manifest.json'
+    
+    def get_context_data(self, **kwargs):
+        for setting_name in dir(app_settings):
+            if setting_name.startswith('PWA_'):
+                kwargs[setting_name] = getattr(app_settings, setting_name)
+        return super().get_context_data(**kwargs)
+
+
+class OfflineView(TemplateView):
+    template_name = "offline.html"

setup.py

@@ -10,16 +10,21 @@ try:
     import pypandoc
 
     long_description = pypandoc.convert('README.md', 'rst')
-except:
+except RuntimeError:
     long_description = short_description
 
 # allow setup.py to be run from any path
 os.chdir(os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir)))
 
+install_requirements = [
+    "django>=2",
+]
+
 setup(
     name='django-pwa',
-    version='1.0.0',
+    version='1.0.1',
     packages=find_packages(),
+    install_requires=install_requirements,
     include_package_data=True,
     license='MIT License',
     description=short_description,
@@ -30,7 +35,8 @@ setup(
     classifiers=[
         'Environment :: Web Environment',
         'Framework :: Django',
-        'Framework :: Django :: 1.10',
+        'Framework :: Django :: 2.0',
+        'Framework :: Django :: 2.1',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',

tests/settings.py

@@ -33,4 +33,6 @@ DATABASES = {
         'ENGINE': 'django.db.backends.sqlite3',
         'NAME': 'mydatabase',
     }
-}
+}
+
+STATIC_URL = '/static/'

tests/test_settings_attr.py

@@ -15,6 +15,7 @@ class AppSettingsTest(TestCase):
             'PWA_APP_DISPLAY',
             'PWA_APP_ORIENTATION',
             'PWA_APP_START_URL',
+            'PWA_APP_FETCH_URL',
             'PWA_APP_ICONS',
             'PWA_APP_DIR',
             'PWA_APP_LANG'

tests/test_template_tag_meta.py

@@ -14,7 +14,14 @@ class CreateMetaTemplateTagTest(TestCase):
     def test_has_tags(self):
         """Must contains the tags in HTML"""
         tags = [
-            '<link rel="apple-touch-icon" href="/" sizes="160x160">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-72x72.png" sizes="72x72">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-96x96.png" sizes="96x96">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-128x128.png" sizes="128x128">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-144x144.png" sizes="144x144">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-152x152.png" sizes="152x152">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-192x192.png" sizes="192x192">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-384x384.png" sizes="384x384">',
+            '<link rel="apple-touch-icon" href="/images/icons/icon-512x512.png" sizes="512x512">',
             '<link rel="manifest" href="/manifest.json">',
             '<meta name="theme-color" content="#000">',
             '<meta name="apple-mobile-web-app-capable" content="yes">',

tests/test_view.py

@@ -41,3 +41,13 @@ class ManifestTest(TestCase):
         for expected in contents:
             with self.subTest():
                 self.assertContains(self.response, expected)
+
+
+class OfflineTest(TestCase):
+    def setUp(self):
+        self.response = self.client.get(r('offline'))
+
+    def test_get(self):
+        """GET /offline Should return status code 200"""
+        self.assertEqual(200, self.response.status_code)
+

tox.ini

@@ -1,5 +1,7 @@
 [tox]
-envlist = py36-django{20}
+envlist =
+    py36-django{20}
+    py36-django{21}
 
 [testenv]
 commands = python runtests.py
@@ -7,4 +9,6 @@ setenv =
     DJANGO_SETTINGS_MODULE=tests.settings
     PYTHONPATH={toxinidir}
 basepython = py36: python3.6
-deps = django20: Django==2.0
+deps =
+    django20: Django==2.0
+    django21: Django==2.1