chore: refactor dart call forwarding

apps/amiapp_flutter/lib/src/screens/dashboard.dart

@@ -53,8 +53,8 @@ class _DashboardScreenState extends State<DashboardScreen> {
         .getBuildInfo()
         .then((value) => setState(() => _buildInfo = value));
 
-    inAppMessageStreamSubscription =
-    CustomerIO.instance.inAppMessaging.subscribeToInAppEventListener(handleInAppEvent);
+    inAppMessageStreamSubscription = CustomerIO.inAppMessaging
+        .subscribeToInAppEventListener(handleInAppEvent);
 
     // Setup 3rd party SDK, flutter-fire.
     // We install this SDK into sample app to make sure the CIO SDK behaves as expected when there is another SDK installed that handles push notifications.

lib/customer_io.dart

@@ -5,7 +5,7 @@ import 'package:flutter/cupertino.dart';
 
 import 'customer_io_config.dart';
 import 'customer_io_enums.dart';
-import 'customer_io_platform_interface.dart';
+import 'data_pipelines/customer_io_platform_interface.dart';
 import 'extensions/map_extensions.dart';
 import 'messaging_in_app/platform_interface.dart';
 import 'messaging_push/platform_interface.dart';
@@ -61,17 +61,13 @@ class CustomerIO {
 
   /// Access push messaging functionality
   static CustomerIOMessagingPushPlatform get pushMessaging {
-    if (_instance == null) {
-      throw StateError(
-        'CustomerIO SDK must be initialized before accessing push module.\n'
-            'Call CustomerIO.initialize() first.',
-      );
-    }
-    return _instance!._pushMessaging;
+    return instance._pushMessaging;
   }
 
   /// Access in-app messaging functionality
-  CustomerIOMessagingInAppPlatform get inAppMessaging => _inAppMessaging;
+  static CustomerIOMessagingInAppPlatform get inAppMessaging {
+    return instance._inAppMessaging;
+  }
 
   /// To initialize the plugin
   ///
@@ -95,7 +91,7 @@ class CustomerIO {
   ///
   /// @param userId unique identifier for a profile
   /// @param traits (Optional) params to set profile attributes
-  void identify(
+  Future<void> identify(
       {required String userId, Map<String, dynamic> traits = const {}}) {
     return _platform.identify(
         userId: userId, traits: traits.excludeNullValues());
@@ -105,23 +101,23 @@ class CustomerIO {
   ///
   /// If a profile exists, clearIdentify will stop identifying the profile.
   /// If no profile exists, request to clearIdentify will be ignored.
-  void clearIdentify() {
-    _platform.clearIdentify();
+  Future<void> clearIdentify() {
+    return _platform.clearIdentify();
   }
 
   /// To track user events like loggedIn, addedItemToCart etc.
   /// You may also track events with additional yet optional data.
   ///
   /// @param name event name to be tracked
   /// @param properties (Optional) params to be sent with event
-  void track(
+  Future<void> track(
       {required String name, Map<String, dynamic> properties = const {}}) {
     return _platform.track(
         name: name, properties: properties.excludeNullValues());
   }
 
   /// Track a push metric
-  void trackMetric(
+  Future<void> trackMetric(
       {required String deliveryID,
       required String deviceToken,
       required MetricEvent event}) {
@@ -131,15 +127,15 @@ class CustomerIO {
 
   /// Register a new device token with Customer.io, associated with the current active customer. If there
   /// is no active customer, this will fail to register the device
-  void registerDeviceToken({required String deviceToken}) {
+  Future<void> registerDeviceToken({required String deviceToken}) {
     return _platform.registerDeviceToken(deviceToken: deviceToken);
   }
 
   /// Track screen events to record the screens a user visits
   ///
   /// @param name name of the screen user visited
   /// @param attributes (Optional) params to be sent with event
-  void screen(
+  Future<void> screen(
       {required String title, Map<String, dynamic> properties = const {}}) {
     return _platform.screen(
         title: title, properties: properties.excludeNullValues());
@@ -149,15 +145,16 @@ class CustomerIO {
   /// such as app preferences, timezone etc
   ///
   /// @param attributes device attributes
-  void setDeviceAttributes({required Map<String, dynamic> attributes}) {
+  Future<void> setDeviceAttributes({required Map<String, dynamic> attributes}) {
     return _platform.setDeviceAttributes(attributes: attributes);
   }
 
   /// Set custom user profile information such as user preference, specific
   /// user actions etc
   ///
   /// @param attributes additional attributes for a user profile
-  void setProfileAttributes({required Map<String, dynamic> attributes}) {
+  Future<void> setProfileAttributes(
+      {required Map<String, dynamic> attributes}) {
     return _platform.setProfileAttributes(
         attributes: attributes.excludeNullValues());
   }

lib/customer_io_const.dart → lib/data_pipelines/_native_constants.dart

@@ -1,33 +1,26 @@
-// TODO: Cleanup this file later when all commented methods are implemented
-
-class MethodConsts {
-  static const String initialize = "initialize";
-  static const String identify = "identify";
+/// Methods specific to Data Pipelines module.
+class NativeMethods {
   static const String clearIdentify = "clearIdentify";
-  static const String track = "track";
-  static const String trackMetric = "trackMetric";
+  static const String identify = "identify";
+  static const String initialize = "initialize";
   static const String screen = "screen";
   static const String setDeviceAttributes = "setDeviceAttributes";
   static const String setProfileAttributes = "setProfileAttributes";
   static const String registerDeviceToken = "registerDeviceToken";
-  static const String onMessageReceived = "onMessageReceived";
-  static const String dismissMessage = "dismissMessage";
-  static const String getRegisteredDeviceToken = "getRegisteredDeviceToken";
+  static const String track = "track";
+  static const String trackMetric = "trackMetric";
 }
 
-class TrackingConsts {
-  static const String userId = "userId";
+/// Method parameters specific to DataPipelines module.
+class NativeMethodParams {
   static const String attributes = "attributes";
-  static const String traits = "traits";
-  static const String eventName = "eventName";
-  static const String token = "token";
   static const String deliveryId = "deliveryId";
   static const String deliveryToken = "deliveryToken";
   static const String metricEvent = "metricEvent";
-  static const String message = "message";
-  static const String handleNotificationTrigger = "handleNotificationTrigger";
-
   static const String name = "name";
   static const String properties = "properties";
   static const String title = "title";
+  static const String token = "token";
+  static const String traits = "traits";
+  static const String userId = "userId";
 }