feat(messaging): add support for exporting delivery metrics to BigQuery

docs/cloud-messaging/receive.md

@@ -339,3 +339,64 @@ Here's how to use the second method:
      },
    }
    ```
+
+
+## Enable message delivery data export
+
+You can export your message data into BigQuery for further analysis. BigQuery allows you to analyze the data using BigQuery SQL, 
+export it to another cloud provider, or use the data for your custom ML models. An export to BigQuery 
+includes all available data for messages, regardless of message type or whether the message is sent via 
+the API or the Notifications composer.
+
+To enable the export, first follow the steps [described here](https://firebase.google.com/docs/cloud-messaging/understand-delivery?platform=ios#bigquery-data-export),
+then follow these instructions:
+
+### Android
+
+You can use the following code:
+```dart
+await FirebaseMessaging.instance.setDeliveryMetricsExportToBigQuery(true);
+```
+
+### iOS
+
+For iOS, you need to change the `AppDelegate.m` with the following content.
+
+```objective-c
+#import "AppDelegate.h"
+#import "GeneratedPluginRegistrant.h"
+#import <Firebase/Firebase.h>
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [GeneratedPluginRegistrant registerWithRegistry:self];
+  // Override point for customization after application launch.
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+- (void)application:(UIApplication *)application
+    didReceiveRemoteNotification:(NSDictionary *)userInfo
+          fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
+  [[FIRMessaging extensionHelper] exportDeliveryMetricsToBigQueryWithMessageInfo:userInfo];
+}
+
+@end
+``` 
+
+### Web
+
+For Web, you need to change your service worker in order to use the v9 version of the SDK.
+The v9 version needs to be bundled, so you need to use a bundler like `esbuild` for instance 
+to get the service worker to work.
+See [the example app](https://github.com/firebase/flutterfire/blob/master/packages/firebase_messaging/firebase_messaging/example/bundled-service-worker) to see how to achieve this.
+
+Once you've migrated to the v9 SDK, you can use the following code:
+
+``` typescript
+const messaging = getMessaging(app);
+experimentalSetDeliveryMetricsExportedToBigQueryEnabled(messaging, true);
+```
+
+Don't forget to run `yarn build` in order to export the new version of your service worker to the `web` folder.

packages/firebase_messaging/firebase_messaging/android/src/main/java/io/flutter/plugins/firebase/messaging/FlutterFirebaseMessagingPlugin.java

@@ -251,6 +251,25 @@ private Task<Map<String, Object>> setAutoInitEnabled(Map<String, Object> argumen
     return taskCompletionSource.getTask();
   }
 
+  private Task<Void> setDeliveryMetricsExportToBigQuery(Map<String, Object> arguments) {
+    TaskCompletionSource<Void> taskCompletionSource = new TaskCompletionSource<>();
+
+    cachedThreadPool.execute(
+        () -> {
+          try {
+            FirebaseMessaging firebaseMessaging =
+                FlutterFirebaseMessagingUtils.getFirebaseMessagingForArguments(arguments);
+            Boolean enabled = (Boolean) Objects.requireNonNull(arguments.get("enabled"));
+            firebaseMessaging.setDeliveryMetricsExportToBigQuery(enabled);
+            taskCompletionSource.setResult(null);
+          } catch (Exception e) {
+            taskCompletionSource.setException(e);
+          }
+        });
+
+    return taskCompletionSource.getTask();
+  }
+
   private Task<Map<String, Object>> getInitialMessage() {
     TaskCompletionSource<Map<String, Object>> taskCompletionSource = new TaskCompletionSource<>();
 
@@ -447,6 +466,9 @@ public void onMethodCall(final MethodCall call, @NonNull final Result result) {
       case "Messaging#setAutoInitEnabled":
         methodCallTask = setAutoInitEnabled(call.arguments());
         break;
+      case "Messaging#setDeliveryMetricsExportToBigQuery":
+        methodCallTask = setDeliveryMetricsExportToBigQuery(call.arguments());
+        break;
       case "Messaging#requestPermission":
         if (Build.VERSION.SDK_INT >= 33) {
           // Android version >= Android 13 requires user input if notification permission not set/granted

packages/firebase_messaging/firebase_messaging/example/.gitignore

@@ -32,7 +32,6 @@
 /build/
 
 # Web related
-lib/generated_plugin_registrant.dart
 
 # Symbolication related
 app.*.symbols

packages/firebase_messaging/firebase_messaging/example/bundled-service-worker/firebase-messaging-sw.ts

@@ -0,0 +1,45 @@
+import { initializeApp } from 'firebase/app';
+import {
+  experimentalSetDeliveryMetricsExportedToBigQueryEnabled,
+  getMessaging,
+  isSupported,
+  onBackgroundMessage
+} from 'firebase/messaging/sw';
+
+declare var self: ServiceWorkerGlobalScope;
+
+self.addEventListener('install', (event) => {
+  console.log(self);
+  console.log(event);
+});
+
+const app = initializeApp({
+  apiKey: 'AIzaSyAgUhHU8wSJgO5MVNy95tMT07NEjzMOfz0',
+  authDomain: 'react-native-firebase-testing.firebaseapp.com',
+  databaseURL: 'https://react-native-firebase-testing.firebaseio.com',
+  projectId: 'react-native-firebase-testing',
+  storageBucket: 'react-native-firebase-testing.appspot.com',
+  messagingSenderId: '448618578101',
+  appId: '1:448618578101:web:ecaffe2bc4511738',
+});
+
+isSupported().then((isSupported) => {
+  if (isSupported) {
+    const messaging = getMessaging(app);
+
+    experimentalSetDeliveryMetricsExportedToBigQueryEnabled(messaging, true);
+
+    onBackgroundMessage(messaging, ({ notification: notification }) => {
+      const { title, body, image } = notification ?? {};
+
+      if (!title) {
+        return;
+      }
+
+      self.registration.showNotification(title, {
+        body,
+        icon: image || '/assets/icons/icon-72x72.png',
+      });
+    });
+  }
+});

packages/firebase_messaging/firebase_messaging/example/bundled-service-worker/package.json

@@ -0,0 +1,11 @@
+{
+  "dependencies": {
+    "firebase": "9"
+  },
+  "devDependencies": {
+    "esbuild": "^0.15.10"
+  },
+  "scripts": {
+    "build": "esbuild firebase-messaging-sw.ts --outdir=../web --bundle --sourcemap --minify --format=esm"
+  }
+}

packages/firebase_messaging/firebase_messaging/example/bundled-service-worker/tsconfig.json

@@ -0,0 +1,8 @@
+{
+    "compilerOptions": {
+        "lib": [
+            "webworker",
+            "es6"
+        ]
+    }
+}