Ready to pre-configure independent notifications service

android/app/src/main/java/org/communiquons/comunic/MainActivity.java

@@ -1,6 +1,23 @@
 package org.communiquons.comunic;
 
+
+import androidx.annotation.NonNull;
+
+import org.communiquons.comunic.independentnotifications.NotificationsChannel;
+
 import io.flutter.embedding.android.FlutterActivity;
+import io.flutter.embedding.engine.FlutterEngine;
+import io.flutter.plugin.common.MethodChannel;
 
 public class MainActivity extends FlutterActivity {
+
+    private static final String INDEPENDENT_NOTIFICATIONS_CHANNEL = "org.communiquons.comunic/independent-push-notifications-service";
+
+    @Override
+    public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
+        super.configureFlutterEngine(flutterEngine);
+
+        new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), INDEPENDENT_NOTIFICATIONS_CHANNEL)
+        .setMethodCallHandler(new NotificationsChannel());
+    }
 }

android/app/src/main/java/org/communiquons/comunic/independentnotifications/NotificationsChannel.java

@@ -0,0 +1,31 @@
+package org.communiquons.comunic.independentnotifications;
+
+import androidx.annotation.NonNull;
+
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+
+public class NotificationsChannel implements MethodChannel.MethodCallHandler {
+    @Override
+    public void onMethodCall(@NonNull MethodCall call, @NonNull MethodChannel.Result result) {
+        try {
+
+            if (call.method.equals("preConfigure"))
+                preConfigure(result);
+
+            else
+                result.notImplemented();
+        } catch (Exception e) {
+            e.printStackTrace();
+            result.error("Failed to execute native code!", e.getMessage(), null);
+        }
+
+    }
+
+    /**
+     * Pre-configure notifications service
+     */
+    private static void preConfigure(@NonNull MethodChannel.Result result) throws Exception {
+        System.out.println("Ready to pre-configure !");
+    }
+}

lib/generated_plugin_registrant.dart

@@ -5,12 +5,13 @@
 // ignore_for_file: lines_longer_than_80_chars
 
 import 'package:file_picker/src/file_picker_web.dart';
-import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 import 'package:shared_preferences_web/shared_preferences_web.dart';
 import 'package:url_launcher_web/url_launcher_web.dart';
 import 'package:video_player_web/video_player_web.dart';
 import 'package:wakelock_web/wakelock_web.dart';
 
+import 'package:flutter_web_plugins/flutter_web_plugins.dart';
+
 // ignore: public_member_api_docs
 void registerPlugins(Registrar registrar) {
   FilePickerWeb.registerWith(registrar);

lib/helpers/independent_push_notifications_helper.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/services.dart';
+
+/// Independent push notifications helper
+///
+/// @author Pierre Hubert
+
+class IndependentPushNotificationsHelper {
+  static const platform = const MethodChannel(
+      "org.communiquons.comunic/independent-push-notifications-service");
+
+  /// Call this method to prepare the application for background refresh by
+  /// requesting appropriate permissions, configuring battery optimization...
+  ///
+  /// Throws an Exception in case of failure
+  static Future<void> preConfigure() async {
+    await platform.invokeMethod("preConfigure");
+  }
+}

lib/ui/routes/push_notifications_route.dart

@@ -1,3 +1,4 @@
+import 'package:comunic/helpers/independent_push_notifications_helper.dart';
 import 'package:comunic/helpers/push_notifications_helper.dart';
 import 'package:comunic/helpers/server_config_helper.dart';
 import 'package:comunic/models/config.dart';
@@ -15,8 +16,7 @@ import 'package:flutter/material.dart';
 Future<void> showInitialPushNotificationsConfiguration(
     BuildContext context) async {
   // Check if no notifications service are available
-  if (!PushNotificationsHelper.arePushNotificationsAvailable)
+  if (!PushNotificationsHelper.arePushNotificationsAvailable) return;
-    return;
 
   await Navigator.of(context).push(
       MaterialPageRoute(builder: (c) => PushNotificationsConfigurationRoute()));
@@ -118,9 +118,9 @@ class _PushNotificationsConfigurationRouteState
           // TODO: Handle this case.
           throw new Exception("Firebase not supported yet!");
           break;
+
         case PushNotificationsStatus.INDEPENDENT:
-          // TODO: Handle this case.
+          await IndependentPushNotificationsHelper.preConfigure();
-          throw new Exception("Independent not supported yet!");
           break;
 
         default: