fraiseql-server 2.0.0-alpha.1

// Phase 12.5 Cycle 1: External Auth Provider Integration - RED
//! Comprehensive test specifications for OAuth2 and OIDC authentication,
//! provider discovery, JWT validation, and user provisioning.

#[cfg(test)]
mod oauth_tests {
    // ============================================================================
    // OAUTH2 AUTHORIZATION CODE FLOW TESTS
    // ============================================================================

    /// Test OAuth2 authorization URL generation
    #[tokio::test]
    #[ignore] // Requires OAuth implementation
    async fn test_oauth2_authorization_url_generation() {
        // OAuth2Client with provider configuration
        // Generate authorization URL with:
        // - client_id
        // - redirect_uri
        // - response_type: "code"
        // - scope: "openid profile email"
        // - state: random CSRF token
        // URL is valid and properly encoded
        assert!(true);
    }

    /// Test OAuth2 authorization code exchange
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_exchange_code_for_token() {
        // POST to token endpoint with:
        // - code: authorization code
        // - client_id
        // - client_secret
        // - redirect_uri
        // - grant_type: "authorization_code"
        // Response contains:
        // - access_token
        // - refresh_token
        // - token_type: "Bearer"
        // - expires_in: seconds
        assert!(true);
    }

    /// Test OAuth2 token refresh
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_refresh_token() {
        // POST to token endpoint with:
        // - grant_type: "refresh_token"
        // - refresh_token
        // - client_id
        // - client_secret
        // Returns new access_token and optionally new refresh_token
        // Can be used to keep session alive
        assert!(true);
    }

    /// Test OAuth2 state parameter validation
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_state_parameter_prevents_csrf() {
        // Authorization URL includes random state parameter
        // Callback verifies state matches original
        // Mismatch: reject with 403
        // Prevents CSRF attacks
        assert!(true);
    }

    /// Test OAuth2 redirect URI validation
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_redirect_uri_validation() {
        // Authorization uses redirect_uri parameter
        // Must match configured callback URL exactly
        // Mismatched redirect_uri: provider rejects request
        // Prevents token leakage to wrong application
        assert!(true);
    }

    // ============================================================================
    // OAUTH2 ERROR HANDLING TESTS
    // ============================================================================

    /// Test OAuth2 invalid credentials
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_invalid_credentials_error() {
        // Token exchange with invalid client_secret
        // Provider returns: error: "invalid_client"
        // Application handles gracefully with informative error
        assert!(true);
    }

    /// Test OAuth2 expired authorization code
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_expired_authorization_code() {
        // Exchange authorization code after expiry (usually 10 minutes)
        // Provider returns: error: "invalid_grant"
        // User redirected to re-authorize
        assert!(true);
    }

    /// Test OAuth2 scope mismatch
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_insufficient_permissions_error() {
        // User denies requested scopes (e.g., email access)
        // Provider returns: error: "access_denied"
        // Application prompts user to authorize required scopes
        assert!(true);
    }

    // ============================================================================
    // OIDC PROVIDER DISCOVERY TESTS
    // ============================================================================

    /// Test OIDC provider discovery via well-known endpoint
    #[tokio::test]
    #[ignore]
    async fn test_oidc_provider_discovery() {
        // GET /.well-known/openid-configuration from provider
        // Response includes:
        // - issuer: provider identifier
        // - authorization_endpoint
        // - token_endpoint
        // - userinfo_endpoint
        // - jwks_uri: for JWT signature verification
        // Cached locally for performance
        assert!(true);
    }

    /// Test OIDC JWKS (JSON Web Key Set) retrieval
    #[tokio::test]
    #[ignore]
    async fn test_oidc_jwks_retrieval_and_caching() {
        // GET /oauth/discovery/keys or jwks_uri
        // Response contains public keys for ID token verification
        // Keys cached with reasonable TTL (usually 1 day)
        // Cache invalidated if key ID not found
        assert!(true);
    }

    /// Test OIDC configuration caching
    #[tokio::test]
    #[ignore]
    async fn test_oidc_configuration_caching() {
        // Provider configuration cached locally
        // Subsequent requests use cache, not HTTP
        // Cache expiration and refresh logic
        // Periodic update of configuration in background
        assert!(true);
    }

    // ============================================================================
    // JWT ID TOKEN VALIDATION TESTS
    // ============================================================================

    /// Test ID token structure validation
    #[tokio::test]
    #[ignore]
    async fn test_id_token_structure_validation() {
        // ID token is JWT with three parts: header.payload.signature
        // Header contains: alg (algorithm), kid (key ID)
        // Payload (claims) contains: iss, sub, aud, exp, iat
        // Invalid format: reject
        assert!(true);
    }

    /// Test ID token signature verification
    #[tokio::test]
    #[ignore]
    async fn test_id_token_signature_verification() {
        // Retrieve provider's public key from JWKS by kid
        // Verify JWT signature matches algorithm in header
        // Invalid signature: reject
        // Prevents token forgery
        assert!(true);
    }

    /// Test ID token expiry validation
    #[tokio::test]
    #[ignore]
    async fn test_id_token_expiry_validation() {
        // Check exp claim against current time
        // Token expired: reject
        // Time skew allowed: ±5 minutes (configurable)
        // Prevents replay attacks
        assert!(true);
    }

    /// Test ID token issuer validation
    #[tokio::test]
    #[ignore]
    async fn test_id_token_issuer_validation() {
        // Verify iss claim matches provider issuer
        // Mismatch: reject
        // Prevents token substitution from other issuers
        assert!(true);
    }

    /// Test ID token audience (aud) claim validation
    #[tokio::test]
    #[ignore]
    async fn test_id_token_audience_validation() {
        // Verify aud claim contains application's client_id
        // Mismatch: reject
        // Prevents token intended for another app
        assert!(true);
    }

    /// Test ID token subject (sub) claim validation
    #[tokio::test]
    #[ignore]
    async fn test_id_token_subject_claim_extraction() {
        // Extract sub (subject) claim from validated token
        // Sub is unique user identifier from provider
        // Used to link to local user account
        assert!(true);
    }

    // ============================================================================
    // USERINFO ENDPOINT TESTS
    // ============================================================================

    /// Test userinfo endpoint access
    #[tokio::test]
    #[ignore]
    async fn test_userinfo_endpoint_retrieval() {
        // GET /oauth/userinfo with Bearer access_token
        // Response includes:
        // - sub: user subject (unique ID)
        // - email
        // - email_verified
        // - name
        // - picture (profile picture URL)
        // - locale
        assert!(true);
    }

    /// Test userinfo token validation
    #[tokio::test]
    #[ignore]
    async fn test_userinfo_access_token_validation() {
        // Userinfo endpoint requires valid access_token
        // Expired/invalid token: 401 Unauthorized
        // Can refresh token and retry
        assert!(true);
    }

    /// Test userinfo email verification
    #[tokio::test]
    #[ignore]
    async fn test_userinfo_email_verified_flag() {
        // Provider indicates if email is verified: email_verified boolean
        // If false: application may require re-verification
        // Or prompt user to verify before certain operations
        assert!(true);
    }

    // ============================================================================
    // USER PROVISIONING TESTS
    // ============================================================================

    /// Test first-time user auto-provisioning
    #[tokio::test]
    #[ignore]
    async fn test_first_login_auto_provisioning() {
        // User logs in with OAuth provider for first time
        // System retrieves userinfo from provider
        // Creates local user account with:
        // - email from provider
        // - name from provider
        // - external_auth record linking provider:sub to local user
        // User can immediately use application
        assert!(true);
    }

    /// Test existing user OAuth linking
    #[tokio::test]
    #[ignore]
    async fn test_linking_existing_user_to_oauth() {
        // User with existing local account
        // Logs in with OAuth provider
        // System finds local account by email
        // Creates external_auth record linking provider:sub
        // User can now use both local password and OAuth
        assert!(true);
    }

    /// Test user profile update on login
    #[tokio::test]
    #[ignore]
    async fn test_user_profile_update_from_provider() {
        // On each login, sync user profile from provider
        // Update: name, picture, locale if changed
        // Existing local data not overwritten if blank from provider
        // User retains manual customizations
        assert!(true);
    }

    /// Test multiple OAuth providers per user
    #[tokio::test]
    #[ignore]
    async fn test_multiple_oauth_providers_same_user() {
        // User can link multiple OAuth providers (Google + GitHub)
        // Each provider has separate external_auth record
        // Login with any provider maps to same user
        // Allows flexibility in identity management
        assert!(true);
    }

    /// Test OAuth provider unlinking
    #[tokio::test]
    #[ignore]
    async fn test_unlinking_oauth_provider() {
        // User can disconnect OAuth provider from account
        // Removes external_auth record for that provider
        // User can still login with other methods
        // If last auth method: require local password first
        assert!(true);
    }

    // ============================================================================
    // PROVIDER-SPECIFIC TESTS
    // ============================================================================

    /// Test Auth0 OIDC provider support
    #[tokio::test]
    #[ignore]
    async fn test_auth0_provider_integration() {
        // Auth0 provider configuration
        // Domain: tenant.auth0.com
        // Discovery endpoint: https://tenant.auth0.com/.well-known/openid-configuration
        // Supports standard OIDC flow
        assert!(true);
    }

    /// Test Google OAuth2 provider support
    #[tokio::test]
    #[ignore]
    async fn test_google_oauth2_provider_integration() {
        // Google provider configuration
        // Discovery: https://accounts.google.com/.well-known/openid-configuration
        // Provides email, name, picture claims
        // Supports hd (hosted domain) parameter for workspace
        assert!(true);
    }

    /// Test Microsoft OIDC provider support
    #[tokio::test]
    #[ignore]
    async fn test_microsoft_oidc_provider_integration() {
        // Microsoft provider configuration
        // Discovery: https://login.microsoftonline.com/common/.well-known/openid-configuration
        // Multi-tenant support with tenant-specific endpoints
        // Provides Microsoft Graph integration
        assert!(true);
    }

    /// Test Okta OIDC provider support
    #[tokio::test]
    #[ignore]
    async fn test_okta_oidc_provider_integration() {
        // Okta provider configuration
        // Custom domain: https://tenant.okta.com
        // Discovery: https://tenant.okta.com/.well-known/openid-configuration
        // Support for groups claims
        assert!(true);
    }

    // ============================================================================
    // OAUTH SESSION MANAGEMENT TESTS
    // ============================================================================

    /// Test OAuth session creation
    #[tokio::test]
    #[ignore]
    async fn test_oauth_session_creation() {
        // After successful authentication
        // Create oauth_session record with:
        // - user_id: local user
        // - provider_type: "oauth2", "oidc"
        // - provider_user_id: provider's sub claim
        // - access_token: stored securely
        // - refresh_token: stored securely
        // - token_expiry: when access_token expires
        assert!(true);
    }

    /// Test OAuth session token refresh
    #[tokio::test]
    #[ignore]
    async fn test_oauth_session_automatic_refresh() {
        // When access_token expires
        // System uses refresh_token to get new access_token
        // Updates oauth_session with new tokens
        // Continues seamless service without user re-login
        assert!(true);
    }

    /// Test OAuth session expiration handling
    #[tokio::test]
    #[ignore]
    async fn test_oauth_session_expiration() {
        // Refresh token has longer expiry (typically 7-90 days)
        // If refresh_token expired: user must re-authenticate
        // Session cleaned up from database
        // User redirected to login
        assert!(true);
    }

    /// Test OAuth session revocation
    #[tokio::test]
    #[ignore]
    async fn test_oauth_session_revocation() {
        // User logs out
        // Provider revocation endpoint called if available
        // oauth_session record marked as revoked/deleted
        // Access token no longer valid
        assert!(true);
    }

    // ============================================================================
    // SECURITY TESTS
    // ============================================================================

    /// Test PKCE code challenge verification
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_pkce_code_challenge() {
        // For public clients (SPAs, mobile apps)
        // Generate code_verifier (random string)
        // Compute code_challenge = BASE64URL(SHA256(code_verifier))
        // Send code_challenge in authorization request
        // Exchange code with code_verifier
        // Provider verifies code_verifier matches original challenge
        // Prevents authorization code interception
        assert!(true);
    }

    /// Test state parameter CSRF protection
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_state_csrf_protection() {
        // Generate random state token
        // Store in session with fingerprint
        // Include state in authorization URL
        // After callback, verify state matches and validate fingerprint
        // Prevents CSRF attacks
        assert!(true);
    }

    /// Test nonce parameter replay protection
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_nonce_replay_prevention() {
        // Generate random nonce
        // Include nonce in authorization request
        // Provider includes nonce in ID token
        // Verify nonce matches original
        // Prevents token replay attacks
        assert!(true);
    }

    /// Test XSS prevention in OAuth flow
    #[tokio::test]
    #[ignore]
    async fn test_oauth2_xss_protection() {
        // User info and claims properly escaped
        // No script injection through provider data
        // Profile name, picture URL, etc. sanitized
        // Prevents XSS through provider accounts
        assert!(true);
    }

    /// Test credential storage security
    #[tokio::test]
    #[ignore]
    async fn test_oauth_credentials_encrypted_storage() {
        // Access tokens encrypted in database
        // Refresh tokens encrypted in database
        // Never logged or exposed in error messages
        // Retrieved from secure vault or encrypted column
        assert!(true);
    }

    // ============================================================================
    // CONFIGURATION AND DISCOVERY TESTS
    // ============================================================================

    /// Test dynamic provider configuration
    #[tokio::test]
    #[ignore]
    async fn test_dynamic_oauth_provider_configuration() {
        // Application stores provider configuration
        // Configuration retrievable via API
        // Can update: client_id, scopes, tenant-specific settings
        // Configuration persisted and loaded on startup
        assert!(true);
    }

    /// Test provider enablement toggle
    #[tokio::test]
    #[ignore]
    async fn test_oauth_provider_enable_disable() {
        // Each provider can be enabled/disabled independently
        // Disabled provider: hidden from login UI
        // Disabled but authenticated users can still access
        // Re-enabling doesn't affect existing sessions
        assert!(true);
    }

    /// Test fallback provider handling
    #[tokio::test]
    #[ignore]
    async fn test_oauth_provider_fallback() {
        // If primary provider unavailable
        // Try fallback provider if configured
        // Provides resilience against provider outages
        assert!(true);
    }

    /// Test scope customization per provider
    #[tokio::test]
    #[ignore]
    async fn test_oauth_scopes_configuration() {
        // Each provider can request different scopes
        // Auth0: openid profile email custom:claims
        // Google: openid profile email
        // Microsoft: openid profile email offline_access
        // Configuration determines what data collected
        assert!(true);
    }

    // ============================================================================
    // ERROR RECOVERY AND LOGGING TESTS
    // ============================================================================

    /// Test OAuth provider timeout handling
    #[tokio::test]
    #[ignore]
    async fn test_oauth_provider_timeout() {
        // Provider request timeout: 10 seconds
        // Timeout: return user-friendly error
        // Suggest retry or alternative login method
        // Log for investigation
        assert!(true);
    }

    /// Test OAuth provider unavailability
    #[tokio::test]
    #[ignore]
    async fn test_oauth_provider_unavailable() {
        // Provider returns 5xx error
        // Application shows appropriate error message
        // Suggests local password login as alternative
        // Logs incident for monitoring
        assert!(true);
    }

    /// Test OAuth audit logging
    #[tokio::test]
    #[ignore]
    async fn test_oauth_audit_logging() {
        // Log all OAuth events:
        // - Authorization attempt
        // - Token exchange
        // - User provisioning
        // - Token refresh
        // - Session logout
        // Includes: timestamp, provider, user_id, IP address, status
        assert!(true);
    }

    /// Test OAuth malicious token detection
    #[tokio::test]
    #[ignore]
    async fn test_oauth_suspicious_token_detection() {
        // Detect suspicious patterns:
        // - Multiple failed token exchanges
        // - Invalid signatures
        // - Token replay attempts
        // Alert on suspicious activity
        // Lock account or require additional verification
        assert!(true);
    }
}