auth-framework 0.4.2

use auth_framework::auth::AuthFramework;
use auth_framework::authentication::credentials::Credential;
use auth_framework::config::AuthConfig;
use auth_framework::testing::test_infrastructure::TestEnvironmentGuard;
use std::sync::Arc;

/// Demonstration of critical test coverage gaps
/// These tests reveal missing error path coverage

#[tokio::test]
async fn demonstrate_uninitialized_framework_gap() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    let config = AuthConfig::default();
    let framework = AuthFramework::new(config);
    // DELIBERATELY NOT calling framework.initialize()

    let credential = Credential::password("user", "pass");

    // This should fail, but we don't have tests covering this scenario
    match framework.authenticate("nonexistent", credential).await {
        Ok(_) => println!("❌ COVERAGE GAP: Framework allowed operation without initialization!"),
        Err(e) => println!(
            "✅ Framework properly rejected uninitialized operation: {}",
            e
        ),
    }
}

#[tokio::test]
async fn demonstrate_storage_failure_gap() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    // Use default storage configuration
    // This demonstrates we lack proper failure scenario testing
    let config = AuthConfig::default();

    let mut framework = AuthFramework::new(config);
    framework.initialize().await.unwrap();

    // This test demonstrates that we lack coverage for storage failures
    println!("⚠️ COVERAGE GAP: We don't test storage failure scenarios");

    // Try creating sessions and observe behavior
    match framework
        .create_session(
            "test_user",
            std::time::Duration::from_secs(3600),
            None,
            None,
        )
        .await
    {
        Ok(session_id) => println!("✅ Session created: {}", session_id),
        Err(e) => println!("❌ Session creation failed: {}", e),
    }
}

#[tokio::test]
async fn demonstrate_input_validation_gaps() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    let config = AuthConfig::default();
    let mut framework = AuthFramework::new(config);
    framework.initialize().await.unwrap();

    // Test extreme inputs that might cause issues
    let long_string = "a".repeat(10000);
    let long_string2 = "b".repeat(10000);

    let extreme_inputs = vec![
        ("", ""),                                      // Empty strings
        (long_string.as_str(), long_string2.as_str()), // Very long strings
        ("👤🚀💻", "🔐🌟⚡"),                          // Unicode emoji
        ("\0\x01\x02", "\x03\x04\x05"),                // Control characters
    ];

    for (username, password) in extreme_inputs {
        let credential = Credential::password(username, password);

        // Should handle gracefully without panicking
        match framework.authenticate("password", credential).await {
            Ok(_) => println!(
                "Input accepted: {} / ***",
                username.chars().take(10).collect::<String>()
            ),
            Err(e) => println!(
                "Input rejected: {} -> {}",
                username.chars().take(10).collect::<String>(),
                e
            ),
        }
    }
}

#[tokio::test]
async fn demonstrate_concurrency_gap() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    let config = AuthConfig::default();
    let mut framework = AuthFramework::new(config);
    framework.initialize().await.unwrap();

    let framework = Arc::new(framework);
    let mut handles = vec![];

    // Test concurrent operations - looking for deadlocks or race conditions
    for i in 0..10 {
        let framework = framework.clone();
        let handle = tokio::spawn(async move {
            let user_id = format!("user_{}", i);

            // Multiple concurrent operations per task
            let session_result = framework
                .create_session(&user_id, std::time::Duration::from_secs(3600), None, None)
                .await;

            if let Ok(session_id) = session_result {
                let _get_result = framework.get_session(&session_id).await;
                let _delete_result = framework.delete_session(&session_id).await;
            }
        });
        handles.push(handle);
    }

    // Wait for all operations with timeout to catch deadlocks
    for handle in handles {
        match tokio::time::timeout(std::time::Duration::from_secs(5), handle).await {
            Ok(_) => (), // Success
            Err(_) => {
                println!("❌ COVERAGE GAP: Potential deadlock detected in concurrent operations!")
            }
        }
    }

    println!("✅ Concurrency test completed");
}

#[tokio::test]
async fn demonstrate_error_propagation_gaps() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    let config = AuthConfig::default();
    let mut framework = AuthFramework::new(config);
    framework.initialize().await.unwrap();

    // Test non-existent authentication method
    let credential = Credential::password("user", "pass");
    match framework
        .authenticate("non_existent_method", credential)
        .await
    {
        Ok(_) => println!("❌ COVERAGE GAP: Non-existent method should fail!"),
        Err(e) => println!("✅ Non-existent method properly rejected: {}", e),
    }

    // Test invalid session operations
    match framework.get_session("invalid-session-id").await {
        Ok(None) => println!("✅ Invalid session ID handled correctly"),
        Ok(Some(_)) => println!("❌ COVERAGE GAP: Invalid session ID returned data!"),
        Err(e) => println!("✅ Invalid session ID caused error: {}", e),
    }
}

#[tokio::test]
async fn demonstrate_boundary_condition_gaps() {
    let _env = TestEnvironmentGuard::new().with_jwt_secret("test-secret");

    let config = AuthConfig::default();
    let mut framework = AuthFramework::new(config);
    framework.initialize().await.unwrap();

    println!("⚠️ COVERAGE GAPS DEMONSTRATED:");
    println!("1. No tests for session timeout boundary conditions");
    println!("2. No tests for maximum concurrent session limits");
    println!("3. No tests for rate limiting boundary conditions");
    println!("4. No tests for memory pressure scenarios");
    println!("5. No tests for token expiration edge cases");
    println!("6. No fuzz testing infrastructure");
    println!("7. No tests for malformed JWT tokens");
    println!("8. No tests for timing attack resistance");
    println!("9. No tests for DoS protection mechanisms");
    println!("10. No tests for database connection failures");
}