Initial boilerplate for accepting subscriptions

djangoldp_webpushnotification/templates/sw.js

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+// Register event listener for the 'push' event.
+self.addEventListener("push", function (event) {
+  // Retrieve the textual payload from event.data (a PushMessageData object).
+  // Other formats are supported (ArrayBuffer, Blob, JSON), check out the documentation
+  // on https://developer.mozilla.org/en-US/docs/Web/API/PushMessageData.
+  const eventInfo = event.data.text();
+  const data = JSON.parse(eventInfo);
+  const head = data.head || "New Notification 🕺🕺";
+  const body = data.body || "This is default content. Your notification didn't have one 🙄🙄";
+
+  // Keep the service worker alive until the notification is created.
+  event.waitUntil(
+    self.registration.showNotification(head, {
+      body: body,
+      icon: "https://i.imgur.com/MZM3K5w.png",
+    })
+  );
+});