feat(deriv_auth): add log in user tracking events.

packages/deriv_auth/lib/core/analytics/data/auth_tracking_data.dart

@@ -0,0 +1,164 @@
+import 'package:deriv_auth/core/analytics/enums.dart';
+
+/// Get user tracking data.
+Map<String, dynamic> getUserTrackingData(
+  LoginAction action,
+  String appId, {
+  LoginProvider? provider,
+  String? errorMessage,
+}) =>
+    switch (action) {
+      LoginAction.openLoginForm => <String, dynamic>{
+          'event': 'open',
+          'properties': <String, String>{
+            'app_id': appId,
+          },
+        },
+      LoginAction.startLogin => _getLoginStartedTrackingData(
+          provider,
+          appId,
+        ),
+      LoginAction.finishLogin => _getLoginFinishedTrackingData(
+          provider,
+          appId,
+        ),
+      LoginAction.loginError => _getLoginErrorTrackingData(
+          provider,
+          appId,
+          errorMessage ?? (throw Exception('Error message is required.')),
+        ),
+    };
+
+/// Get login started tracking data.
+Map<String, dynamic> _getLoginStartedTrackingData(
+        LoginProvider? provider, String appId) =>
+    switch (provider) {
+      LoginProvider.email => <String, dynamic>{
+          'event': 'login_started',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'email',
+          },
+        },
+      LoginProvider.passkey => <String, dynamic>{
+          'event': 'login_started',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'passkey',
+          },
+        },
+      LoginProvider.google => <String, dynamic>{
+          'event': 'login_started',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'google',
+          },
+        },
+      LoginProvider.facebook => <String, dynamic>{
+          'event': 'login_started',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'facebook',
+          },
+        },
+      LoginProvider.apple => <String, dynamic>{
+          'event': 'login_started',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'apple',
+          },
+        },
+      null => throw Exception('Null LoginProvider is being passed.'),
+    };
+
+/// Get login finished tracking data.
+Map<String, dynamic> _getLoginFinishedTrackingData(
+        LoginProvider? provider, String appId) =>
+    switch (provider) {
+      LoginProvider.email => <String, dynamic>{
+          'event': 'login_finished',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'email',
+          },
+        },
+      LoginProvider.passkey => <String, dynamic>{
+          'event': 'login_finished',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'passkey',
+          },
+        },
+      LoginProvider.google => <String, dynamic>{
+          'event': 'login_finished',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'google',
+          },
+        },
+      LoginProvider.facebook => <String, dynamic>{
+          'event': 'login_finished',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'facebook',
+          },
+        },
+      LoginProvider.apple => <String, dynamic>{
+          'event': 'login_finished',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'apple',
+          },
+        },
+      null => throw Exception('Null LoginProvider is being passed.'),
+    };
+
+/// Get login error tracking data.
+Map<String, dynamic> _getLoginErrorTrackingData(
+  LoginProvider? provider,
+  String appId,
+  String errorMessage,
+) =>
+    switch (provider) {
+      LoginProvider.email => <String, dynamic>{
+          'event': 'login_flow_error',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'email',
+            'error_message': errorMessage,
+          },
+        },
+      LoginProvider.passkey => <String, dynamic>{
+          'event': 'login_flow_error',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'passkey',
+            'error_message': errorMessage,
+          },
+        },
+      LoginProvider.google => <String, dynamic>{
+          'event': 'login_flow_error',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'google',
+            'error_message': errorMessage,
+          },
+        },
+      LoginProvider.facebook => <String, dynamic>{
+          'event': 'login_flow_error',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'facebook',
+            'error_message': errorMessage,
+          },
+        },
+      LoginProvider.apple => <String, dynamic>{
+          'event': 'login_flow_error',
+          'properties': <String, dynamic>{
+            'app_id': appId,
+            'login_provider': 'apple',
+            'error_message': errorMessage,
+          },
+        },
+      null => throw Exception('Null LoginProvider is being passed.'),
+    };

packages/deriv_auth/lib/core/analytics/data/auth_tracking_repository.dart

@@ -0,0 +1,131 @@
+import 'package:analytics/sdk/rudderstack/sdk/deriv_rudderstack_sdk.dart';
+import 'package:deriv_auth/core/services/token/models/enums.dart';
+import 'package:deriv_auth/core/analytics/data/auth_tracking_data.dart';
+import 'package:deriv_auth/core/analytics/domain/auth_user_tracking_interface.dart';
+import 'package:deriv_auth/core/analytics/enums.dart';
+
+/// Repository to track user events.
+class AuthTrackingRepository implements AuthUserTrackingInterface {
+  /// Constructor for [AnalyticsRepository].
+  AuthTrackingRepository._(
+    this._appId,
+    this._derivRudderstack,
+  );
+
+  static AuthTrackingRepository? _instance;
+
+  /// Singleton instance of [AnalyticsRepository].
+  static AuthTrackingRepository get instance => _instance ??=
+      throw Exception('AuthTrackingRepository is not initialized');
+
+  /// Instance of [DerivRudderstack].
+  final DerivRudderstack _derivRudderstack;
+
+  /// Initialize [AnalyticsRepository].
+  static void init(
+    String appId, {
+    required DerivRudderstack derivRudderstack,
+  }) =>
+      _instance = AuthTrackingRepository._(
+        appId,
+        derivRudderstack,
+      );
+
+  /// Deriv client app ID.
+  final String _appId;
+
+  LoginProvider? _loginProvider;
+
+  @override
+  void trackUserOpenedLoginForm() {
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.openLoginForm,
+      _appId,
+    );
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+
+  @override
+  void trackError(String errorMessage) {
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.loginError,
+      _appId,
+      errorMessage: errorMessage,
+    );
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+
+  @override
+  void trackSystemLoginPressed() {
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.startLogin,
+      _appId,
+      provider: LoginProvider.email,
+    );
+
+    _loginProvider = LoginProvider.email;
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+
+  @override
+  void trackPasskeyLoginPressed() {
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.startLogin,
+      _appId,
+      provider: LoginProvider.passkey,
+    );
+
+    _loginProvider = LoginProvider.passkey;
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+
+  @override
+  void trackSocialLoginPressed(SocialAuthProvider type) {
+    _loginProvider = switch (type) {
+      SocialAuthProvider.google => LoginProvider.google,
+      SocialAuthProvider.facebook => LoginProvider.facebook,
+      SocialAuthProvider.apple => LoginProvider.apple,
+    };
+
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.startLogin,
+      _appId,
+      provider: _loginProvider,
+    );
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+
+  @override
+  void trackLoginFinished() {
+    final Map<String, dynamic> data = getUserTrackingData(
+      LoginAction.finishLogin,
+      _appId,
+      provider: _loginProvider,
+    );
+
+    _derivRudderstack.track(
+      eventName: data['event'] as String,
+      properties: data['properties'] as Map<String, dynamic>,
+    );
+  }
+}

packages/deriv_auth/lib/core/analytics/domain/auth_user_tracking_interface.dart

@@ -0,0 +1,24 @@
+import 'package:deriv_auth/deriv_auth.dart';
+
+/// Interface to define the methods for tracking user events.
+abstract interface class AuthUserTrackingInterface {
+  /// Track user opened login form.
+  void trackUserOpenedLoginForm();
+
+  /// Track user clicks log after entering email and password.
+  void trackSystemLoginPressed();
+
+  /// Track user clicks on Passkey login button.
+  void trackPasskeyLoginPressed();
+
+  /// Track user clicks on social login button.
+  void trackSocialLoginPressed(
+    SocialAuthProvider type,
+  );
+
+  /// Track login finished.
+  void trackLoginFinished();
+
+  /// Track login error.
+  void trackError(String errorMessage);
+}

packages/deriv_auth/lib/core/analytics/enums.dart

@@ -0,0 +1,32 @@
+/// Enum for login actions
+enum LoginAction {
+  /// Open login form.
+  openLoginForm,
+
+  /// Start system login.
+  startLogin,
+
+  /// Finish login.
+  finishLogin,
+
+  /// Login error.
+  loginError,
+}
+
+/// Enum for login provider.
+enum LoginProvider {
+  /// Email login.
+  email,
+
+  /// Passkey login.
+  passkey,
+
+  /// Google login.
+  google,
+
+  /// Facebook login.
+  facebook,
+
+  /// Apple login.
+  apple,
+}

packages/deriv_auth/lib/core/analytics/service/auth_tracking_mixin.dart

@@ -0,0 +1,36 @@
+import 'package:deriv_auth/deriv_auth.dart';
+import 'package:deriv_auth/core/analytics/data/auth_tracking_repository.dart';
+
+/// Mixin for tracking user authentication actions.
+mixin AuthTrackingMixin {
+  late final AuthTrackingRepository _repository =
+      AuthTrackingRepository.instance;
+
+  /// Track user opened login form.
+  void trackUserOpenedLoginForm() => _repository.trackUserOpenedLoginForm();
+
+  /// Track login error.
+  void trackError(String errorMessage) => _repository.trackError(errorMessage);
+
+  /// Track login started.
+  void trackLoginWithEmailAndPassword() =>
+      _repository.trackSystemLoginPressed();
+
+  /// Track Passkey login started.
+  void trackLoginWithPasskey() => _repository.trackPasskeyLoginPressed();
+
+  /// Track Google login started.
+  void trackLoginWithGoogle() =>
+      _repository.trackSocialLoginPressed(SocialAuthProvider.google);
+
+  /// Track Facebook login started.
+  void trackLoginWithFacebook() =>
+      _repository.trackSocialLoginPressed(SocialAuthProvider.facebook);
+
+  /// Track Apple login started.
+  void trackLoginWithApple() =>
+      _repository.trackSocialLoginPressed(SocialAuthProvider.apple);
+
+  /// Track login finished.
+  void trackLoginFinished() => _repository.trackLoginFinished();
+}