//! Integration tests for authentication and authorization
//!
//! These tests verify that the auth system works correctly end-to-end.

use std::env;
use std::fs;
use std::path::PathBuf;
use uuid::Uuid;

// Note: These integration tests cannot run until amaters-core compiles successfully.
// They are provided here to demonstrate the intended auth flow and for future use.

#[cfg(test)]
mod integration_tests {
    use super::*;

    // Helper function to create a temporary directory
    fn temp_dir() -> PathBuf {
        env::temp_dir().join(format!("amaters_auth_test_{}", Uuid::new_v4()))
    }

    // Helper function to cleanup temporary directory
    fn cleanup_dir(path: &PathBuf) {
        if path.exists() {
            fs::remove_dir_all(path).ok();
        }
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_end_to_end_jwt_auth() {
        // This test would:
        // 1. Create an Authenticator with JWT enabled
        // 2. Generate a test JWT token
        // 3. Authenticate using the token
        // 4. Verify the principal is correct
        // 5. Use Authorizer to check permissions
        // 6. Log the auth events with AuditLogger

        // Example:
        // let auth_config = AuthSettings { ... };
        // let authenticator = Authenticator::new(auth_config).unwrap();
        // let principal = authenticator.authenticate_jwt(&token).unwrap();
        // assert_eq!(principal.name, "test_user");

        // let authz_config = AuthorizationSettings { ... };
        // let authorizer = Authorizer::new(authz_config).unwrap();
        // let result = authorizer.authorize(&principal, &Action::Read, &Resource::Collection("test".into()));
        // assert!(result.is_ok());

        // let audit_logger = AuditLogger::new(Some(log_path)).unwrap();
        // audit_logger.log_auth_success(&principal, None);
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_end_to_end_api_key_auth() {
        // This test would:
        // 1. Create API key configuration file
        // 2. Create Authenticator with API key enabled
        // 3. Authenticate using an API key
        // 4. Verify the principal is correct
        // 5. Check authorization
        // 6. Verify audit logs
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_authorization_with_roles() {
        // This test would:
        // 1. Create custom roles configuration
        // 2. Create Authorizer with the roles
        // 3. Test different principals with different roles
        // 4. Verify admin has all permissions
        // 5. Verify user has limited permissions
        // 6. Verify reader has read-only permissions
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_audit_logging_complete_flow() {
        // This test would:
        // 1. Setup audit logger with file
        // 2. Perform authentication (success and failure)
        // 3. Perform authorization (success and denial)
        // 4. Read audit log file
        // 5. Verify all events were logged correctly
        // 6. Parse JSON and verify structure
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_config_validation() {
        // This test would:
        // 1. Create various ServerConfig instances with auth settings
        // 2. Test validation logic
        // 3. Verify invalid configs are rejected
        // 4. Verify valid configs are accepted
    }

    #[test]
    #[ignore] // Ignore until amaters-core builds
    fn test_role_inheritance() {
        // This test would:
        // 1. Create roles with inheritance
        // 2. Verify permissions are inherited correctly
        // 3. Verify circular inheritance is handled
    }
}

// Example: How to setup authentication and authorization in the server
//
// ```no_run
// use amaters_server::auth::{Authenticator, Principal};
// use amaters_server::authz::{Authorizer, Action, Resource};
// use amaters_server::audit::AuditLogger;
// use amaters_server::config::{AuthSettings, AuthorizationSettings};
//
// async fn setup_auth_example() {
//     // 1. Load configuration
//     let auth_config = AuthSettings {
//         enabled: true,
//         methods: vec!["jwt".to_string()],
//         jwt: JwtSettings {
//             enabled: true,
//             secret: Some("my-secret-key".to_string()),
//             algorithm: "HS256".to_string(),
//             // ... other JWT settings
//         },
//         // ... other auth settings
//     };
//
//     // 2. Create authenticator
//     let authenticator = Authenticator::new(auth_config)
//         .expect("Failed to create authenticator");
//
//     // 3. Create authorizer
//     let authz_config = AuthorizationSettings {
//         enabled: true,
//         default_role: "user".to_string(),
//         // ... other authz settings
//     };
//
//     let authorizer = Authorizer::new(authz_config)
//         .expect("Failed to create authorizer");
//
//     // 4. Create audit logger
//     let audit_logger = AuditLogger::new(Some("/var/log/amaters/audit.jsonl".into()))
//         .expect("Failed to create audit logger");
//
//     // 5. Authenticate a request (example with JWT)
//     let token = "eyJhbGc..."; // JWT token from client
//     match authenticator.authenticate_jwt(token) {
//         Ok(principal) => {
//             audit_logger.log_auth_success(&principal, Some("192.168.1.1".to_string()));
//
//             // 6. Authorize an action
//             let action = Action::Read;
//             let resource = Resource::Collection("users".to_string());
//
//             match authorizer.authorize(&principal, &action, &resource) {
//                 Ok(()) => {
//                     audit_logger.log_authz_success(&principal, &action, &resource, None);
//                     // Proceed with the operation
//                 }
//                 Err(e) => {
//                     audit_logger.log_authz_denied(
//                         &principal,
//                         &action,
//                         &resource,
//                         &e.to_string(),
//                         Some("192.168.1.1".to_string())
//                     );
//                     // Return authorization error to client
//                 }
//             }
//         }
//         Err(e) => {
//             audit_logger.log_auth_failure(
//                 AuthMethod::Jwt,
//                 &e.to_string(),
//                 Some("192.168.1.1".to_string())
//             );
//             // Return authentication error to client
//         }
//     }
// }
// ```
