Implement push notification handling

frigate/api/notification.py

@@ -44,7 +44,9 @@ def register_notifications():
     sub = json.get("sub")
 
     if not sub:
-        return jsonify({"success": False, "message": "Subscription must be provided."}), 400
+        return jsonify(
+            {"success": False, "message": "Subscription must be provided."}
+        ), 400
 
     try:
         User.update(notification_tokens=User.notification_tokens.append(sub)).where(

frigate/comms/webpush.py

@@ -85,19 +85,24 @@ def send_message(self, payload: dict[str, any]) -> None:
 
         title = f"{', '.join(sorted_objects).replace('_', ' ').title()}{' was' if state == 'end' else ''} detected in {', '.join(payload['after']['data']['zones']).replace('_', ' ').title()}"
         message = f"Detected on {payload['after']['camera'].replace('_', ' ').title()}"
-        direct_url = f"{self.config.notifications.base_url}/review?id={reviewId}"
-        image = f'{self.config.notifications.base_url}{payload["after"]["thumb_path"].replace("/media/frigate", "")}'
+        direct_url = f"/review?id={reviewId}"
+        image = f'{payload["after"]["thumb_path"].replace("/media/frigate", "")}'
+
+        logger.info(f"the image for testing is {image}")
 
         for pusher in self.web_pushers:
             pusher.send(
                 headers=self.claim_headers,
                 ttl=0,
-                data=json.dumps({
-                    "title": title,
-                    "message": message,
-                    "direct_url": direct_url,
-                    "image": image,
-                }),
+                data=json.dumps(
+                    {
+                        "title": title,
+                        "message": message,
+                        "direct_url": direct_url,
+                        "image": image,
+                        "id": reviewId,
+                    }
+                ),
             )
 
     def stop(self) -> None:

web/public/notifications-worker.ts

@@ -1,9 +1,58 @@
 // Notifications Worker
 
 self.addEventListener("push", function (event) {
+  // @ts-expect-error we know this exists
   if (event.data) {
-    console.log("This push event has data: ", event.data.text());
+    // @ts-expect-error we know this exists
+    const data = event.data.json();
+    // @ts-expect-error we know this exists
+    self.registration.showNotification(data.title, {
+      body: data.message,
+      icon: data.image,
+      image: data.image,
+      tag: data.id,
+      data: { id: data.id, link: data.direct_url },
+      actions: [
+        {
+          action: `view-${data.id}`,
+          title: "View",
+        },
+      ],
+    });
   } else {
-    console.log("This push event has no data.");
+    // pass
+    // This push event has no data
+  }
+});
+
+self.addEventListener("notificationclick", (event) => {
+  // @ts-expect-error we know this exists
+  if (event.notification) {
+    // @ts-expect-error we know this exists
+    event.notification.close();
+
+    // @ts-expect-error we know this exists
+    if (event.notification.data) {
+      // @ts-expect-error we know this exists
+      const url = event.notification.data.link;
+
+      // @ts-expect-error we know this exists
+      clients.matchAll({ type: "window" }).then((windowClients) => {
+        // Check if there is already a window/tab open with the target URL
+        for (let i = 0; i < windowClients.length; i++) {
+          const client = windowClients[i];
+          // If so, just focus it.
+          if (client.url === url && "focus" in client) {
+            return client.focus();
+          }
+        }
+        // If not, then open the target URL in a new window/tab.
+        // @ts-expect-error we know this exists
+        if (clients.openWindow) {
+          // @ts-expect-error we know this exists
+          return clients.openWindow(url);
+        }
+      });
+    }
   }
 });

web/src/views/settings/NotificationsSettingsView.tsx

@@ -5,30 +5,58 @@ import { Toaster } from "@/components/ui/sonner";
 import { Switch } from "@/components/ui/switch";
 import { FrigateConfig } from "@/types/frigateConfig";
 import axios from "axios";
-import { useEffect, useState } from "react";
+import { useCallback, useEffect, useState } from "react";
 import useSWR from "swr";
 
 const NOTIFICATION_SERVICE_WORKER = "notifications-worker.ts";
 
 export default function NotificationView() {
-  const { data: config } = useSWR<FrigateConfig>("config");
+  const { data: config } = useSWR<FrigateConfig>("config", {
+    revalidateOnFocus: false,
+  });
 
   // notification key handling
 
   const { data: publicKey } = useSWR(
     config?.notifications?.enabled ? "notifications/pubkey" : null,
+    { revalidateOnFocus: false },
+  );
+
+  const subscribeToNotifications = useCallback(
+    (registration: ServiceWorkerRegistration) => {
+      if (registration) {
+        registration.pushManager
+          .subscribe({
+            userVisibleOnly: true,
+            applicationServerKey: publicKey,
+          })
+          .then((pushSubscription) => {
+            axios.post("notifications/register", {
+              sub: pushSubscription,
+            });
+          });
+      }
+    },
+    [publicKey],
   );
 
   // notification state
 
-  const [notificationsSubscribed, setNotificationsSubscribed] =
-    useState<boolean>();
+  const [registration, setRegistration] =
+    useState<ServiceWorkerRegistration | null>();
 
   useEffect(() => {
     navigator.serviceWorker
       .getRegistration(NOTIFICATION_SERVICE_WORKER)
       .then((worker) => {
-        setNotificationsSubscribed(worker != null);
+        if (worker) {
+          setRegistration(worker);
+        } else {
+          setRegistration(null);
+        }
+      })
+      .catch(() => {
+        setRegistration(null);
       });
   }, []);
 
@@ -70,34 +98,34 @@ export default function NotificationView() {
                   // TODO make the notifications button show enable / disable depending on current state
                 }
                 <Button
-                  disabled={
-                    notificationsSubscribed == undefined ||
-                    publicKey == undefined
-                  }
+                  disabled={publicKey == undefined}
                   onClick={() => {
-                    Notification.requestPermission().then((permission) => {
-                      console.log("notification permissions are ", permission);
-                      if (permission === "granted") {
-                        navigator.serviceWorker
-                          .register(NOTIFICATION_SERVICE_WORKER)
-                          .then((registration) => {
-                            registration.pushManager
-                              .subscribe({
-                                userVisibleOnly: true,
-                                applicationServerKey: publicKey,
-                              })
-                              .then((pushSubscription) => {
-                                console.log(pushSubscription.endpoint);
-                                axios.post("notifications/register", {
-                                  sub: pushSubscription,
-                                });
-                              });
-                          });
-                      }
-                    });
+                    if (registration == null) {
+                      Notification.requestPermission().then((permission) => {
+                        if (permission === "granted") {
+                          navigator.serviceWorker
+                            .register(NOTIFICATION_SERVICE_WORKER)
+                            .then((registration) => {
+                              setRegistration(registration);
+
+                              if (registration.active) {
+                                subscribeToNotifications(registration);
+                              } else {
+                                setTimeout(
+                                  () => subscribeToNotifications(registration),
+                                  1000,
+                                );
+                              }
+                            });
+                        }
+                      });
+                    } else {
+                      registration.unregister();
+                      setRegistration(null);
+                    }
                   }}
                 >
-                  {`${notificationsSubscribed ? "Disable" : "Enable"} Notifications`}
+                  {`${registration != null ? "Unregister" : "Register"} for Notifications`}
                 </Button>
               </div>
             </div>