update one signal

lib/core/services/onesignal_service.dart

@@ -0,0 +1,92 @@
+import 'package:flutter/foundation.dart';
+import 'package:onesignal_flutter/onesignal_flutter.dart';
+
+/// OneSignal service for managing push notifications and external user ID.
+///
+/// This service handles:
+/// - Setting external user ID after login (using phone number)
+/// - Restoring external user ID on app startup
+/// - Clearing external user ID on logout
+///
+/// Usage:
+/// ```dart
+/// // After successful login
+/// await OneSignalService.login(phoneNumber);
+///
+/// // On logout
+/// await OneSignalService.logout();
+/// ```
+class OneSignalService {
+  OneSignalService._();
+
+  /// Login user to OneSignal by setting external user ID.
+  ///
+  /// This associates the device with the user's phone number,
+  /// allowing targeted push notifications to specific users.
+  ///
+  /// [phoneNumber] - The user's phone number (used as external ID)
+  static Future<void> login(String phoneNumber) async {
+    try {
+      // Set external user ID for targeting
+      await OneSignal.login(phoneNumber);
+      debugPrint('🔔 OneSignal: login - external_id set to $phoneNumber');
+    } catch (e) {
+      debugPrint('🔔 OneSignal error: Failed to set external user ID - $e');
+    }
+  }
+
+  /// Logout user from OneSignal by removing external user ID.
+  ///
+  /// This disassociates the device from the user,
+  /// so notifications won't be sent to this specific user anymore.
+  static Future<void> logout() async {
+    try {
+      await OneSignal.logout();
+      debugPrint('🔔 OneSignal: logout - external_id cleared');
+    } catch (e) {
+      debugPrint('🔔 OneSignal error: Failed to clear external user ID - $e');
+    }
+  }
+
+  /// Add a tag to the user for segmentation.
+  ///
+  /// Tags can be used to segment users for targeted notifications.
+  /// Example: tier = "diamond", role = "contractor"
+  static Future<void> setTag(String key, String value) async {
+    try {
+      await OneSignal.User.addTagWithKey(key, value);
+      debugPrint('🔔 OneSignal: tag set - $key: $value');
+    } catch (e) {
+      debugPrint('🔔 OneSignal error: Failed to set tag - $e');
+    }
+  }
+
+  /// Add multiple tags at once.
+  static Future<void> setTags(Map<String, String> tags) async {
+    try {
+      await OneSignal.User.addTags(tags);
+      debugPrint('🔔 OneSignal: tags set - $tags');
+    } catch (e) {
+      debugPrint('🔔 OneSignal error: Failed to set tags - $e');
+    }
+  }
+
+  /// Remove a tag from the user.
+  static Future<void> removeTag(String key) async {
+    try {
+      await OneSignal.User.removeTag(key);
+      debugPrint('🔔 OneSignal: tag removed - $key');
+    } catch (e) {
+      debugPrint('🔔 OneSignal error: Failed to remove tag - $e');
+    }
+  }
+
+  /// Get the OneSignal subscription ID (player ID).
+  ///
+  /// This is the device-specific ID used by OneSignal.
+  static String? get subscriptionId => OneSignal.User.pushSubscription.id;
+
+  /// Check if push notifications are enabled.
+  static bool get isPushEnabled =>
+      OneSignal.User.pushSubscription.optedIn ?? false;
+}