fill

lib/features/auth/domain/repositories/auth_repository.dart

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+import 'package:dartz/dartz.dart';
+
+import '../../../../core/errors/failures.dart';
+import '../../data/models/login_request_model.dart';
+import '../entities/user_entity.dart';
+
+/// Abstract repository interface for authentication operations
+///
+/// This defines the contract that the data layer must implement.
+/// Returns Either<Failure, Success> for proper error handling.
+abstract class AuthRepository {
+  /// Login with username and password
+  ///
+  /// Returns [Right(UserEntity)] on success
+  /// Returns [Left(Failure)] on error
+  Future<Either<Failure, UserEntity>> login(LoginRequestModel request);
+
+  /// Logout current user
+  ///
+  /// Returns [Right(void)] on success
+  /// Returns [Left(Failure)] on error
+  Future<Either<Failure, void>> logout();
+
+  /// Refresh access token
+  ///
+  /// Returns [Right(UserEntity)] with new tokens on success
+  /// Returns [Left(Failure)] on error
+  Future<Either<Failure, UserEntity>> refreshToken(String refreshToken);
+
+  /// Check if user is authenticated
+  ///
+  /// Returns true if valid access token exists
+  Future<bool> isAuthenticated();
+
+  /// Get current user from local storage
+  ///
+  /// Returns [Right(UserEntity)] if user data exists
+  /// Returns [Left(Failure)] if no user data found
+  Future<Either<Failure, UserEntity>> getCurrentUser();
+
+  /// Clear authentication data (logout locally)
+  ///
+  /// Returns [Right(void)] on success
+  /// Returns [Left(Failure)] on error
+  Future<Either<Failure, void>> clearAuthData();
+}