authflow

• Added imageUrl property to DefaultAuthUser

✨ Token Refresh Feature

• Added token refresh functionality to AuthProvider interface
  • New refreshToken method with default implementation returning null
  • Allows providers to implement custom token refresh logic
• Enhanced AuthManager with refresh capabilities
  • New refreshSession() method for manual token refresh
  • Automatic token refresh during session restoration when enabled
• Added configuration control via AuthConfig
  • New autoRefreshOnExpiry flag (defaults to true)
  • Enables/disables automatic refresh on expired tokens
• New TokenRefreshEvent for refresh tracking
  • Success and failure events with detailed information
  • Integrates with existing event bus system

• Update SDK to >=3.0.0 <4.0.0 and flutter to >=3.7.0 in pubspec.yaml

• Improved Readme documentation with quickstart guide and built-in providers

• Fixed AuthManager.login() to properly respect defaultProviderId from AuthConfig
• Implemented standardized exception handling with AuthException class
• Added typed exception factory constructors for various authentication scenarios
• Updated providers to use consistent error handling
• Improved testing for exception cases
• Enhanced error reporting with contextual information
• Added test mode support to AuthEventBus for improved testability
• Fixed event handling in tests to avoid cross-test interference
• Add optional expiration duration for anonymous sessions in AnonymousAuthProvider
• Improved documentation and examples for exception handling
• Enhanced AuthBuilder with optimized stream handling and token expiration check

Initial release of the Authflow package with the following features:

Core Components

• AuthToken: Token management with access token, refresh token, and expiration handling
• AuthUser: Abstract user model with DefaultAuthUser implementation
• AuthStorage: Interface for persisting authentication state
• SecureAuthStorage: Implementation using SharedPreferences for secure storage
• AuthProvider: Abstract interface for authentication providers
• AuthStatus: Enum representing authentication states (authenticated, unauthenticated, loading)
• AuthRegistry: Global registry for managing authentication providers
• AuthManager: Central orchestrator for authentication operations
• AuthConfig: Configuration system for the auth manager
• AuthEventBus: Reactive event system using RxDart's BehaviorSubject for auth state changes

Authentication Providers

• AnonymousAuthProvider: Provider for anonymous authentication
• EmailPasswordAuthProvider: Base provider for email/password authentication
• MockEmailPasswordAuthProvider: Implementation for testing or demos

Events

• LoginEvent: Dispatched when a user logs in
• LogoutEvent: Dispatched when a user logs out

Flutter Widgets

• AuthBuilder: Stream-based widget for building UIs based on auth state

Features

• Multiple authentication provider support
• Reactive streams for auth status, user, and token
• Secure token and user persistence
• Manual session injection capabilities
• Global event system for cross-app auth state management