ec432a037c
feat: Implement OAuth 2.0 authentication with PKCE and automatic fallback
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Add complete OAuth 2.0 Authorization Code Flow with PKCE as alternative
to API token authentication, with automatic server detection and graceful
fallback to classic login.
**OAuth Core (RFC 7636 PKCE):**
- PKCEGenerator: S256 challenge generation for secure code exchange
- OAuth DTOs: Client registration, token request/response models
- OAuthClient, OAuthToken, AuthenticationMethod domain models
- API.swift: registerOAuthClient() and exchangeOAuthToken() endpoints
- OAuthRepository + POAuthRepository protocol
**Browser Integration (ASWebAuthenticationSession):**
- OAuthSession: Wraps native authentication session
- OAuthFlowCoordinator: Orchestrates 5-phase OAuth flow
- readeck:// URL scheme for OAuth callback handling
- State verification for CSRF protection
- User cancellation handling
**Token Management:**
- KeychainHelper: OAuth token storage alongside API tokens
- TokenProvider: getOAuthToken(), setOAuthToken(), getAuthMethod()
- AuthenticationMethod enum to distinguish token types
- AuthRepository: loginWithOAuth(), getAuthenticationMethod()
- Endpoint persistence in both Keychain and Settings
**Server Feature Detection:**
- ServerInfo extended with features array and supportsOAuth flag
- GET /api/info endpoint integration (backward compatible)
- GetServerInfoUseCase with optional endpoint parameter
**User Profile Integration:**
- ProfileApiClient: Fetch user data via GET /api/profile
- UserProfileDto with username, email, provider information
- GetUserProfileUseCase: Extract username from profile
- Username saved and displayed for OAuth users (like classic auth)
**Automatic OAuth Flow (No User Selection):**
- OnboardingServerView: 2-phase flow (endpoint → auto-OAuth or classic)
- OAuth attempted automatically if server supports it
- Fallback to username/password on OAuth failure or unsupported
- SettingsServerViewModel: checkServerOAuthSupport(), loginWithOAuth()
**Cleanup & Refactoring:**
- Remove all #if os(iOS) && !APP_EXTENSION conditionals
- Remove LoginMethodSelectionView (no longer needed)
- Remove switchToClassicLogin() method
- Factories updated with OAuth dependencies
**Testing:**
- PKCEGeneratorTests: Verify RFC 7636 compliance
- ServerInfoTests: Feature detection and backward compatibility
- Mock implementations for all OAuth components
**Documentation:**
- docs/OAuth2-Implementation-Plan.md: Complete implementation guide
- openapi.json: Readeck API specification
**Scopes Requested:**
- bookmarks:read, bookmarks:write, profile:read
OAuth users now have full feature parity with classic authentication.
Server auto-detects OAuth support via /info endpoint. Seamless UX with
browser-based login and automatic fallback.
2025-12-19 21:56:40 +01:00
4b93c605f1
Redesign settings screen with native iOS style
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- Refactor all settings views to use List with .insetGrouped style
- Create reusable SettingsRow components for consistent UI
- Separate onboarding flow into dedicated OnboardingServerView
- Consolidate font, theme, and card layout into unified Appearance section
- Add visual card layout previews in dedicated selection screen
- Move "Open links in" option to Appearance with descriptive footer
- Improve settings organization and native iOS feel
2025-10-31 23:39:59 +01:00
