feat(monitoring): add Sentry + Crashlytics + tracing #200

ignition-mobile/lib/main.dart

@@ -6,6 +6,14 @@ import 'app.dart';
 import 'core/push_notification_service.dart';
 
 void main() async {
+  Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  await MonitoringService.init();   // ← Add this line
+
+  runApp(const MyApp());
+}
+
   WidgetsFlutterBinding.ensureInitialized();
 
   // Load environment variables

ignition-mobile/pubspec.yaml

@@ -26,6 +26,9 @@ dependencies:
     path: ../packages/core-dart
   meta: ^1.18.0
   crypto: ^3.0.7
+  sentry_flutter: ^8.0.0
+  firebase_crashlytics: ^4.0.0
+  logging: ^1.2.0
 
 dev_dependencies:
   # On-device end-to-end suite. Single entry point: integration_test/app_test.dart.

packages/core-dart/lib/src/monitoring/monitoring_service.dart

@@ -0,0 +1,73 @@
+import 'package:flutter/foundation.dart';
+import 'package:firebase_crashlytics/firebase_crashlytics.dart';
+import 'package:logging/logging.dart';
+import 'package:sentry_flutter/sentry_flutter.dart';
+
+class MonitoringService {
+  static final Logger _logger = Logger('IgnitionPay');
+
+  static Future<void> init() async {
+    // Setup structured logging
+    Logger.root.level = Level.ALL;
+    Logger.root.onRecord.listen((record) {
+      if (kDebugMode) {
+        debugPrint('${record.level.name}: ${record.message}');
+      }
+      if (record.error != null) {
+        Sentry.captureException(record.error, stackTrace: record.stackTrace);
+      }
+    });
+
+    // Sentry - Error tracking + Performance Monitoring
+    await SentryFlutter.init((options) {
+      options.dsn = const String.fromEnvironment('SENTRY_DSN', defaultValue: '');
+      options.tracesSampleRate = 0.35;
+      options.profilesSampleRate = 0.15;
+      options.environment = kReleaseMode ? 'production' : 'development';
+      options.debug = kDebugMode;
+
+      options.addEventProcessor((event, hint) {
+        event.tags ??= {};
+        event.tags!['platform'] = defaultTargetPlatform.toString();
+        event.tags!['version'] = '1.0.0';
+        return event;
+      });
+    });
+
+    // Firebase Crashlytics
+    await FirebaseCrashlytics.instance.setCrashlyticsCollectionEnabled(!kDebugMode);
+
+    FlutterError.onError = FirebaseCrashlytics.instance.recordFlutterError;
+  }
+
+  // === Convenience Methods ===
+
+  static void info(String message, [Map<String, dynamic>? data]) {
+    _logger.info(message);
+    Sentry.addBreadcrumb(Breadcrumb(message: message, level: SentryLevel.info, data: data));
+  }
+
+  static void warning(String message, [dynamic error]) {
+    _logger.warning(message, error);
+    Sentry.captureMessage(message, level: SentryLevel.warning);
+  }
+
+  static void error(String message, dynamic error, [StackTrace? stack]) {
+    _logger.severe(message, error, stack);
+    Sentry.captureException(error, stackTrace: stack);
+    FirebaseCrashlytics.instance.recordError(error, stack ?? StackTrace.current);
+  }
+
+  // Performance tracing wrapper
+  static Future<T> trace<T>(String name, Future<T> Function() action) async {
+    final tx = Sentry.startTransaction(name, 'ui');
+    try {
+      return await action();
+    } catch (e, st) {
+      tx.throwable = e;
+      rethrow;
+    } finally {
+      await tx.finish();
+    }
+  }
+}

packages/core-dart/pubspec.yaml

@@ -13,6 +13,7 @@ dependencies:
   meta: ^1.11.0
   crypto: ^3.0.3
   convert: ^3.1.1
+
 
 dev_dependencies:
   lints: ^3.0.0