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Update messaging.md #3627

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Update messaging.md
dev-skas Feb 24, 2025
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Update messaging.md
dev-skas Feb 24, 2025
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21 changes: 12 additions & 9 deletions docs/messaging.md
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ There are two parts to Firebase Messaging, a Service Worker and the DOM API. Ang

It may be wise to use file replacements or environments here for different environments

```
```ts
// This sample application is using 9.22, make sure you are importing the same version

import { initializeApp } from "https://www.gstatic.com/firebasejs/9.22.0/firebase-app.js";
Expand All @@ -74,7 +74,7 @@ const messaging = getMessaging(firebaseApp);

# Example messaging service

```
```ts
import { Injectable } from "@angular/core";
import { Messaging, getToken, onMessage, deleteToken } from "@angular/fire/messaging";
import { Observable, tap } from "rxjs";
Expand All @@ -83,6 +83,7 @@ import { Observable, tap } from "rxjs";
providedIn: "root",
})
export class FcmService {
message$: Observable<any>;
constructor(private msg: Messaging){
Notification.requestPermission().then(
(notificationPermissions: NotificationPermission) => {
Expand All @@ -105,19 +106,20 @@ export class FcmService {
console.log('my fcm token', x);
// This is a good place to then store it on your database for each user
});
});
}
});

this.message$ = new Observable((sub) => onMessage(this.msg, (msg) =>
sub.next(msg))).pipe(
tap((msg) => {
console.log("My Firebase Cloud Message", msg);
})
);
}
deleteToken(){
}
async deleteToken(){
// We can also delete fcm tokens, make sure to also update this on your firestore db if you are storing them as well
await deleteToken(this.msg);
}
}
```

# Testing and Sending Notifications
Expand All @@ -126,7 +128,7 @@ Firebase will allow you to send a test notification under Engage > Messaging > N

Here is a barebones Node example:

```
```js
export const sendTestMessage = onRequest(async (_, res) => {
try {
const message = {
Expand All @@ -147,7 +149,7 @@ export const sendTestMessage = onRequest(async (_, res) => {

Here is a Node example that listens for a new comment on a collection, then sends a notification, and also adds it to a cache on Firebase so users can click through them.

```
```js
exports.onPostReply =
onDocumentCreated("comments/{commentId}", async (event) => {
if (!event) throw new Error("No event found for document creation");
Expand Down Expand Up @@ -222,4 +224,5 @@ async function createNotificationAndCache(
firestore.collection("notificationCache").add(notificationCacheValue));

await Promise.all(promises);
} ```
}
```