feat(appcheck): rCE provider api update

packages/firebase_app_check/firebase_app_check/android/src/main/kotlin/io/flutter/plugins/firebase/appcheck/FirebaseAppCheckPlugin.kt

@@ -53,6 +53,7 @@ class FirebaseAppCheckPlugin : FlutterFirebasePlugin, FlutterPlugin, FirebaseApp
       androidProvider: String?,
       appleProvider: String?,
       debugToken: String?,
+      recaptchaSiteKey: String?,
       callback: (Result<Unit>) -> Unit
   ) {
     try {
@@ -64,8 +65,11 @@ class FirebaseAppCheckPlugin : FlutterFirebasePlugin, FlutterPlugin, FirebaseApp
               DebugAppCheckProviderFactory.getInstance())
         }
         "recaptcha" -> {
-          firebaseAppCheck.installAppCheckProviderFactory(
-              RecaptchaAppCheckProviderFactory.getInstance())
+          if (recaptchaSiteKey == null) {
+            throw Exception("reCAPTCHA site key must not be null")
+          }
+          val factory = RecaptchaAppCheckProviderFactory.getInstance(recaptchaSiteKey)
+          firebaseAppCheck.installAppCheckProviderFactory(factory)
         }
         else -> {
           firebaseAppCheck.installAppCheckProviderFactory(

packages/firebase_app_check/firebase_app_check/android/src/main/kotlin/io/flutter/plugins/firebase/appcheck/GeneratedAndroidFirebaseAppCheck.g.kt

@@ -257,6 +257,7 @@ interface FirebaseAppCheckHostApi {
       androidProvider: String?,
       appleProvider: String?,
       debugToken: String?,
+      recaptchaSiteKey: String?,
       callback: (Result<Unit>) -> Unit
   )
 
@@ -306,15 +307,20 @@ interface FirebaseAppCheckHostApi {
             val androidProviderArg = args[1] as String?
             val appleProviderArg = args[2] as String?
             val debugTokenArg = args[3] as String?
-            api.activate(appNameArg, androidProviderArg, appleProviderArg, debugTokenArg) {
-                result: Result<Unit> ->
-              val error = result.exceptionOrNull()
-              if (error != null) {
-                reply.reply(GeneratedAndroidFirebaseAppCheckPigeonUtils.wrapError(error))
-              } else {
-                reply.reply(GeneratedAndroidFirebaseAppCheckPigeonUtils.wrapResult(null))
-              }
-            }
+            val recaptchaSiteKeyArg = args[4] as String?
+            api.activate(
+                appNameArg,
+                androidProviderArg,
+                appleProviderArg,
+                debugTokenArg,
+                recaptchaSiteKeyArg) { result: Result<Unit> ->
+                  val error = result.exceptionOrNull()
+                  if (error != null) {
+                    reply.reply(GeneratedAndroidFirebaseAppCheckPigeonUtils.wrapError(error))
+                  } else {
+                    reply.reply(GeneratedAndroidFirebaseAppCheckPigeonUtils.wrapResult(null))
+                  }
+                }
           }
         } else {
           channel.setMessageHandler(null)

packages/firebase_app_check/firebase_app_check/example/lib/main.dart

@@ -12,7 +12,9 @@ import 'package:flutter/material.dart';
 
 import 'firebase_options.dart';
 
-const kWebRecaptchaSiteKey = '6Lemcn0dAAAAABLkf6aiiHvpGD6x-zF3nOSDU2M8';
+const kWebRecaptchaSiteKey = 'put-default-web-sitekey';
+const kIOSRecaptchaSiteKey = 'put-default-ios-sitekey';
+const kAndroidRecaptchaSitekey = 'put-default-android-sitekey';
 
 // Windows: create a debug token in the Firebase Console
 // (App Check > Apps > Manage debug tokens), then paste it here
@@ -77,15 +79,36 @@ class FirebaseAppCheckExample extends StatefulWidget {
 
 class _FirebaseAppCheck extends State<FirebaseAppCheckExample> {
   final appCheck = FirebaseAppCheck.instance;
+  final TextEditingController _recaptchaSiteKeyController =
+      TextEditingController();
   String _message = '';
   String _eventToken = 'not yet';
 
+  String get _recaptchaSiteKey {
+    final text = _recaptchaSiteKeyController.text.trim();
+    if (text.isNotEmpty) return text;
+    if (kIsWeb) return kWebRecaptchaSiteKey;
+    if (defaultTargetPlatform == TargetPlatform.iOS) {
+      return kIOSRecaptchaSiteKey;
+    }
+    if (defaultTargetPlatform == TargetPlatform.android) {
+      return kAndroidRecaptchaSitekey;
+    }
+    return '';
+  }
+
   @override
   void initState() {
     appCheck.onTokenChange.listen(setEventToken);
     super.initState();
   }
 
+  @override
+  void dispose() {
+    _recaptchaSiteKeyController.dispose();
+    super.dispose();
+  }
+
   void setMessage(String message) {
     setState(() {
       _message = message;
@@ -101,18 +124,20 @@ class _FirebaseAppCheck extends State<FirebaseAppCheckExample> {
   Future<void> _activate({
     AndroidAppCheckProvider? android,
     AppleAppCheckProvider? apple,
+    WebProvider? web,
     WindowsAppCheckProvider? windows,
   }) async {
     try {
       await appCheck.activate(
         providerAndroid: android ?? const AndroidPlayIntegrityProvider(),
         providerApple: apple ?? const AppleDeviceCheckProvider(),
-        providerWeb: ReCaptchaV3Provider(kWebRecaptchaSiteKey),
+        providerWeb: web ?? ReCaptchaV3Provider(kWebRecaptchaSiteKey),
         providerWindows: windows ?? const WindowsDebugProvider(),
       );
       final providerName = windows?.runtimeType.toString() ??
           apple?.runtimeType.toString() ??
           android?.runtimeType.toString() ??
+          web?.runtimeType.toString() ??
           'default';
       setMessage('Activated with $providerName');
     } catch (e) {
@@ -170,6 +195,24 @@ class _FirebaseAppCheck extends State<FirebaseAppCheckExample> {
                   'activate(AppAttest + DeviceCheck fallback)',
                 ),
               ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _recaptchaSiteKeyController,
+              decoration: const InputDecoration(
+                labelText: 'reCAPTCHA Enterprise Site Key (optional)',
+                hintText: 'Leave empty to use default site key',
+                border: OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 8),
+            ElevatedButton(
+              onPressed: () => _activate(
+                android: AndroidReCaptchaProvider(_recaptchaSiteKey),
+                apple: AppleReCaptchaProvider(_recaptchaSiteKey),
+                web: ReCaptchaEnterpriseProvider(_recaptchaSiteKey),
+              ),
+              child: const Text('activate(ReCaptcha)'),
+            ),
             const SizedBox(height: 16),
             const Text(
               'Actions',