use sal_zinit_client::{
    create_service, delete_service, forget, get_service, kill, list, logs, monitor, restart, start,
    status, stop,
};
use std::path::Path;
use tokio::time::{sleep, Duration};

/// Helper function to check if a zinit socket is available
async fn get_available_socket_path() -> Option<String> {
    let common_paths = vec![
        "/var/run/zinit.sock",
        "/tmp/zinit.sock",
        "/run/zinit.sock",
        "./zinit.sock",
    ];

    for path in common_paths {
        if Path::new(path).exists() {
            // Try to connect and list services to verify it's working
            match list(path).await {
                Ok(_) => {
                    println!("✓ Found working Zinit socket at: {}", path);
                    return Some(path.to_string());
                }
                Err(e) => {
                    println!("⚠ Socket exists at {} but connection failed: {}", path, e);
                }
            }
        }
    }

    println!("⚠ No working Zinit socket found. Tests will be skipped.");
    None
}

#[tokio::test]
async fn test_list_services() {
    if let Some(socket_path) = get_available_socket_path().await {
        let result = list(&socket_path).await;

        match result {
            Ok(services) => {
                println!("✓ Successfully listed {} services", services.len());

                // Verify the result is a proper HashMap with valid structure
                // Verify all service names are non-empty strings and states are valid
                for (name, state) in &services {
                    assert!(!name.is_empty(), "Service name should not be empty");
                    assert!(!state.is_empty(), "Service state should not be empty");
                }

                // Print some services for debugging
                for (name, state) in services.iter().take(3) {
                    println!("  Service: {} -> {}", name, state);
                }
            }
            Err(e) => {
                println!("⚠ List services failed: {}", e);
                // Don't fail the test - zinit might not have any services
            }
        }
    } else {
        println!("⚠ Skipping test_list_services: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_service_lifecycle() {
    if let Some(socket_path) = get_available_socket_path().await {
        let service_name = "test-service-lifecycle";
        let exec_command = "echo 'Hello from test service'";
        let oneshot = true;

        // Clean up any existing service first
        let _ = stop(&socket_path, service_name).await;
        let _ = forget(&socket_path, service_name).await;
        let _ = delete_service(&socket_path, service_name).await;

        // Test service creation
        println!("Creating test service: {}", service_name);
        let create_result = create_service(&socket_path, service_name, exec_command, oneshot).await;

        match create_result {
            Ok(_) => {
                println!("✓ Service created successfully");

                // Test service monitoring
                println!("Monitoring service: {}", service_name);
                let monitor_result = monitor(&socket_path, service_name).await;
                match monitor_result {
                    Ok(_) => println!("✓ Service monitoring started"),
                    Err(e) => println!("⚠ Monitor failed: {}", e),
                }

                // Test service start
                println!("Starting service: {}", service_name);
                let start_result = start(&socket_path, service_name).await;
                match start_result {
                    Ok(_) => {
                        println!("✓ Service started successfully");

                        // Wait a bit for the service to run
                        sleep(Duration::from_millis(500)).await;

                        // Test service status
                        println!("Getting service status: {}", service_name);
                        let status_result = status(&socket_path, service_name).await;
                        match status_result {
                            Ok(service_status) => {
                                println!("✓ Service status: {:?}", service_status.state);
                                assert!(!service_status.name.is_empty());
                            }
                            Err(e) => println!("⚠ Status check failed: {}", e),
                        }
                    }
                    Err(e) => println!("⚠ Start failed: {}", e),
                }

                // Test service stop
                println!("Stopping service: {}", service_name);
                let stop_result = stop(&socket_path, service_name).await;
                match stop_result {
                    Ok(_) => println!("✓ Service stopped successfully"),
                    Err(e) => println!("⚠ Stop failed: {}", e),
                }

                // Test forget (stop monitoring)
                println!("Forgetting service: {}", service_name);
                let forget_result = forget(&socket_path, service_name).await;
                match forget_result {
                    Ok(_) => println!("✓ Service forgotten successfully"),
                    Err(e) => println!("⚠ Forget failed: {}", e),
                }

                // Test service deletion
                println!("Deleting service: {}", service_name);
                let delete_result = delete_service(&socket_path, service_name).await;
                match delete_result {
                    Ok(_) => println!("✓ Service deleted successfully"),
                    Err(e) => println!("⚠ Delete failed: {}", e),
                }
            }
            Err(e) => {
                println!("⚠ Service creation failed: {}", e);
                // This might be expected if zinit doesn't allow service creation
            }
        }
    } else {
        println!("⚠ Skipping test_service_lifecycle: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_get_service_configuration() {
    if let Some(socket_path) = get_available_socket_path().await {
        // First, list services to find an existing one
        let services_result = list(&socket_path).await;

        match services_result {
            Ok(services) => {
                if let Some((service_name, _)) = services.iter().next() {
                    println!("Testing get_service for: {}", service_name);

                    let config_result = get_service(&socket_path, service_name).await;
                    match config_result {
                        Ok(config) => {
                            println!("✓ Service configuration retrieved successfully");
                            println!("  Config: {:?}", config);

                            // Verify it's a valid JSON value
                            assert!(config.is_object() || config.is_string() || config.is_null());
                        }
                        Err(e) => {
                            println!("⚠ Get service config failed: {}", e);
                        }
                    }
                } else {
                    println!("⚠ No services available to test get_service");
                }
            }
            Err(e) => {
                println!("⚠ Could not list services for get_service test: {}", e);
            }
        }
    } else {
        println!("⚠ Skipping test_get_service_configuration: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_logs_functionality() {
    if let Some(socket_path) = get_available_socket_path().await {
        println!("Testing logs functionality");

        // Test getting all logs
        let logs_result = logs(&socket_path, None).await;
        match logs_result {
            Ok(log_entries) => {
                println!("✓ Retrieved {} log entries", log_entries.len());

                // Print first few log entries for verification
                for (i, log_entry) in log_entries.iter().take(3).enumerate() {
                    println!("  Log {}: {}", i + 1, log_entry);
                }

                // Verify logs are valid strings - if we got them, they should be properly formatted
                for log_entry in log_entries.iter().take(5) {
                    // Verify it's a valid string (String type guarantees valid UTF-8)
                    // and check it doesn't contain null bytes which would indicate corruption
                    assert!(
                        !log_entry.contains('\0'),
                        "Log entry should not contain null bytes"
                    );
                }
            }
            Err(e) => {
                println!("⚠ Logs retrieval failed: {}", e);
                // This might be expected if no logs are available
            }
        }

        // Test getting logs with a filter
        let filtered_logs_result = logs(&socket_path, Some("zinit".to_string())).await;
        match filtered_logs_result {
            Ok(filtered_logs) => {
                println!("✓ Retrieved {} filtered log entries", filtered_logs.len());
            }
            Err(e) => {
                println!("⚠ Filtered logs retrieval failed: {}", e);
            }
        }
    } else {
        println!("⚠ Skipping test_logs_functionality: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_kill_signal_functionality() {
    if let Some(socket_path) = get_available_socket_path().await {
        let service_name = "test-kill-service";
        let exec_command = "sleep 30"; // Long-running command
        let oneshot = false;

        // Clean up any existing service first
        let _ = stop(&socket_path, service_name).await;
        let _ = forget(&socket_path, service_name).await;
        let _ = delete_service(&socket_path, service_name).await;

        // Create and start a service for testing kill
        let create_result = create_service(&socket_path, service_name, exec_command, oneshot).await;

        if create_result.is_ok() {
            let _ = monitor(&socket_path, service_name).await;
            let start_result = start(&socket_path, service_name).await;

            if start_result.is_ok() {
                // Wait for service to start
                sleep(Duration::from_millis(1000)).await;

                // Test kill with TERM signal
                println!("Testing kill with TERM signal");
                let kill_result = kill(&socket_path, service_name, Some("TERM")).await;
                match kill_result {
                    Ok(_) => {
                        println!("✓ Kill signal sent successfully");

                        // Wait a bit and check if service stopped
                        sleep(Duration::from_millis(500)).await;

                        let status_result = status(&socket_path, service_name).await;
                        match status_result {
                            Ok(service_status) => {
                                println!("  Service state after kill: {:?}", service_status.state);
                            }
                            Err(e) => println!("  Status check after kill failed: {}", e),
                        }
                    }
                    Err(e) => {
                        println!("⚠ Kill signal failed: {}", e);
                    }
                }
            }

            // Clean up
            let _ = stop(&socket_path, service_name).await;
            let _ = forget(&socket_path, service_name).await;
            let _ = delete_service(&socket_path, service_name).await;
        } else {
            println!("⚠ Could not create test service for kill test");
        }
    } else {
        println!("⚠ Skipping test_kill_signal_functionality: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_restart_functionality() {
    if let Some(socket_path) = get_available_socket_path().await {
        let service_name = "test-restart-service";
        let exec_command = "echo 'Restart test'";
        let oneshot = true;

        // Clean up any existing service first
        let _ = stop(&socket_path, service_name).await;
        let _ = forget(&socket_path, service_name).await;
        let _ = delete_service(&socket_path, service_name).await;

        // Create and start a service for testing restart
        let create_result = create_service(&socket_path, service_name, exec_command, oneshot).await;

        if create_result.is_ok() {
            let _ = monitor(&socket_path, service_name).await;
            let start_result = start(&socket_path, service_name).await;

            if start_result.is_ok() {
                // Wait for service to complete (it's oneshot)
                sleep(Duration::from_millis(1000)).await;

                // Test restart
                println!("Testing service restart");
                let restart_result = restart(&socket_path, service_name).await;
                match restart_result {
                    Ok(_) => {
                        println!("✓ Service restarted successfully");

                        // Wait and check status
                        sleep(Duration::from_millis(500)).await;

                        let status_result = status(&socket_path, service_name).await;
                        match status_result {
                            Ok(service_status) => {
                                println!(
                                    "  Service state after restart: {:?}",
                                    service_status.state
                                );
                            }
                            Err(e) => println!("  Status check after restart failed: {}", e),
                        }
                    }
                    Err(e) => {
                        println!("⚠ Restart failed: {}", e);
                    }
                }
            }

            // Clean up
            let _ = stop(&socket_path, service_name).await;
            let _ = forget(&socket_path, service_name).await;
            let _ = delete_service(&socket_path, service_name).await;
        } else {
            println!("⚠ Could not create test service for restart test");
        }
    } else {
        println!("⚠ Skipping test_restart_functionality: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_error_handling() {
    if let Some(socket_path) = get_available_socket_path().await {
        // Test operations on non-existent service
        let non_existent_service = "non-existent-service-12345";

        println!("Testing error handling with non-existent service");

        // Test status of non-existent service
        let status_result = status(&socket_path, non_existent_service).await;
        match status_result {
            Ok(_) => println!("⚠ Unexpected success for non-existent service status"),
            Err(e) => {
                println!("✓ Correctly failed for non-existent service status: {}", e);
                assert!(!e.to_string().is_empty());
            }
        }

        // Test stop of non-existent service
        let stop_result = stop(&socket_path, non_existent_service).await;
        match stop_result {
            Ok(_) => println!("⚠ Unexpected success for non-existent service stop"),
            Err(e) => {
                println!("✓ Correctly failed for non-existent service stop: {}", e);
            }
        }
    } else {
        println!("⚠ Skipping test_error_handling: No Zinit socket available");
    }
}

#[tokio::test]
async fn test_invalid_socket_path() {
    let invalid_socket = "/invalid/path/to/zinit.sock";

    println!("Testing with invalid socket path: {}", invalid_socket);

    let result = list(invalid_socket).await;
    match result {
        Ok(_) => {
            println!("⚠ Unexpected success with invalid socket path");
        }
        Err(e) => {
            println!("✓ Correctly failed with invalid socket: {}", e);
            assert!(!e.to_string().is_empty());
        }
    }
}