#![allow(unused_crate_dependencies)]
use std::collections::HashMap;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::time::timeout;

use crate::framework::{TestOrchestrator, TestFrameworkConfig, PerformanceThresholds, IntegrationTestResult};
use crate::framework::mocks::MockServiceRegistry;

use config::{ConfigManager, TLIConfig};
use tli::client::{TLIClient, ConnectionManager, ServiceConnection};
use tli::ui::{Dashboard, Terminal, CommandInterface};
use tli::commands::{Command, CommandResult, CommandType};

/// TLI Client Integration Tests
///
/// Tests the Terminal Line Interface client functionality including:
/// - gRPC connections to all three services
///
/// - Command execution and response handling
/// - Real-time data streaming and display
///
/// - Configuration management interface
/// - Performance monitoring dashboard
///
/// - Error handling and recovery
pub struct TLIClientTests {
    orchestrator: TestOrchestrator,
    mock_registry: MockServiceRegistry,
    tli_config: TLIConfig,
}

impl TLIClientTests {
    /// Initialize TLI Client test suite
    pub async fn new() -> Result<Self, Box<dyn std::error::Error>> {
        let config = TestFrameworkConfig {
            performance_thresholds: PerformanceThresholds {
                max_e2e_latency_us: 50,      // 50μs end-to-end
                max_order_latency_us: 20,    // 20μs order processing
                max_risk_latency_us: 10,     // 10μs risk validation
                max_ml_latency_ms: 50,       // 50ms ML inference
                max_config_reload_ms: 100,   // 100ms config reload
                min_throughput_ops_sec: 10000, // 10k ops/sec minimum
            },
            database_url: std::env::var("TEST_DATABASE_URL")
                .unwrap_or_else(|_| "postgresql://test:test@localhost:5432/foxhunt_test".to_string()),
            service_ports: {
                let mut ports = HashMap::new();
                ports.insert("trading".to_string(), 50051);
                ports.insert("backtesting".to_string(), 50052);
                ports.insert("ml_training".to_string(), 50053);
                ports
            },
            test_timeout_secs: 30,
        };

        let orchestrator = TestOrchestrator::new(config).await?;
        let mock_registry = MockServiceRegistry::new().await?;

        // Load TLI configuration
        let config_manager = ConfigManager::new().await?;
        let tli_config = config_manager.get_tli_config().await?;

        Ok(Self {
            orchestrator,
            mock_registry,
            tli_config,
        })
    }

    /// Test Suite 1: Service Connection Management
    ///
    /// Validates TLI's ability to connect and manage connections to services:
    /// - gRPC connection establishment
    ///
    /// - Connection health monitoring
    /// - Automatic reconnection on failures
    ///
    /// - Service discovery and failover
    pub async fn test_service_connection_management(&self) -> IntegrationTestResult {
        println!("🔗 Testing TLI Client - Service Connection Management");

        let start_time = Instant::now();
        let mut test_results = IntegrationTestResult::new("TLI Client Service Connection Management");

        // Start all required services
        for service_name in ["trading", "backtesting", "ml_training"] {
            match self.orchestrator.start_service(service_name).await {
                Ok(_) => {
                    test_results.add_success(&format!("Started {} service for TLI testing", service_name));
                }
                Err(e) => {
                    test_results.add_failure(&format!("Failed to start {} service: {}", service_name, e));
                }
            }
        }

        // Allow services to initialize
        tokio::time::sleep(Duration::from_millis(2000)).await;

        // Test Case 1: TLI Client Initialization
        let tli_client_config = TLIClientConfig {
            service_endpoints: {
                let mut endpoints = HashMap::new();
                endpoints.insert("trading".to_string(), "http://localhost:50051".to_string());
                endpoints.insert("backtesting".to_string(), "http://localhost:50052".to_string());
                endpoints.insert("ml_training".to_string(), "http://localhost:50053".to_string());
                endpoints
            },
            connection_timeout_ms: 5000,
            retry_attempts: 3,
            retry_delay_ms: 1000,
            keepalive_interval_s: 30,
        };

        let tli_init_start = Instant::now();
        let tli_client_result = TLIClient::new(tli_client_config.clone()).await;
        let tli_init_duration = tli_init_start.elapsed();

        match tli_client_result {
            Ok(mut tli_client) => {
                test_results.add_success("TLI client initialized successfully");

                if tli_init_duration.as_millis() <= 5000 {
                    test_results.add_success(&format!(
                        "TLI initialization time acceptable: {}ms",
                        tli_init_duration.as_millis()
                    ));
                } else {
                    test_results.add_failure(&format!(
                        "TLI initialization time too long: {}ms",
                        tli_init_duration.as_millis()
                    ));
                }

                // Test Case 2: Service Connection Tests
                for service_name in ["trading", "backtesting", "ml_training"] {
                    let connection_start = Instant::now();
                    match tli_client.connect_to_service(service_name).await {
                        Ok(_) => {
                            let connection_duration = connection_start.elapsed();
                            test_results.add_success(&format!("Connected to {} service", service_name));

                            if connection_duration.as_millis() <= 2000 {
                                test_results.add_success(&format!(
                                    "{} connection time acceptable: {}ms",
                                    service_name, connection_duration.as_millis()
                                ));
                            } else {
                                test_results.add_failure(&format!(
                                    "{} connection time too long: {}ms",
                                    service_name, connection_duration.as_millis()
                                ));
                            }

                            // Test health check for each service
                            match tli_client.check_service_health(service_name).await {
                                Ok(health_status) => {
                                    if health_status.is_healthy {
                                        test_results.add_success(&format!("{} service health check passed", service_name));
                                    } else {
                                        test_results.add_failure(&format!("{} service reports unhealthy: {}",
                                            service_name, health_status.status_message));
                                    }
                                }
                                Err(e) => {
                                    test_results.add_failure(&format!("Failed {} service health check: {}", service_name, e));
                                }
                            }
                        }
                        Err(e) => {
                            test_results.add_failure(&format!("Failed to connect to {} service: {}", service_name, e));
                        }
                    }
                }

                // Test Case 3: Connection Resilience
                // Simulate a service disconnection and reconnection
                println!("Testing connection resilience by restarting trading service...");

                // Stop trading service temporarily
                match self.orchestrator.stop_service("trading").await {
                    Ok(_) => {
                        test_results.add_success("Trading service stopped for resilience test");

                        // Wait a moment for connection to detect failure
                        tokio::time::sleep(Duration::from_millis(1000)).await;

                        // Check if TLI detects the disconnection
                        match tli_client.check_service_health("trading").await {
                            Ok(health_status) => {
                                if !health_status.is_healthy {
                                    test_results.add_success("TLI correctly detected service disconnection");
                                } else {
                                    test_results.add_failure("TLI failed to detect service disconnection");
                                }
                            }
                            Err(_) => {
                                test_results.add_success("TLI correctly detected service unavailability");
                            }
                        }

                        // Restart trading service
                        match self.orchestrator.start_service("trading").await {
                            Ok(_) => {
                                test_results.add_success("Trading service restarted");

                                // Allow time for reconnection
                                tokio::time::sleep(Duration::from_millis(2000)).await;

                                // Test automatic reconnection
                                let reconnect_start = Instant::now();
                                match tli_client.reconnect_to_service("trading").await {
                                    Ok(_) => {
                                        let reconnect_duration = reconnect_start.elapsed();
                                        test_results.add_success("TLI reconnected to trading service");

                                        if reconnect_duration.as_millis() <= 3000 {
                                            test_results.add_success(&format!(
                                                "Reconnection time acceptable: {}ms",
                                                reconnect_duration.as_millis()
                                            ));
                                        } else {
                                            test_results.add_failure(&format!(
                                                "Reconnection time too long: {}ms",
                                                reconnect_duration.as_millis()
                                            ));
                                        }

                                        // Verify reconnection works
                                        match tli_client.check_service_health("trading").await {
                                            Ok(health_status) => {
                                                if health_status.is_healthy {
                                                    test_results.add_success("Trading service health confirmed after reconnection");
                                                } else {
                                                    test_results.add_failure("Trading service still unhealthy after reconnection");
                                                }
                                            }
                                            Err(e) => {
                                                test_results.add_failure(&format!("Failed to verify reconnection: {}", e));
                                            }
                                        }
                                    }
                                    Err(e) => {
                                        test_results.add_failure(&format!("Failed to reconnect to trading service: {}", e));
                                    }
                                }
                            }
                            Err(e) => {
                                test_results.add_failure(&format!("Failed to restart trading service: {}", e));
                            }
                        }
                    }
                    Err(e) => {
                        test_results.add_failure(&format!("Failed to stop trading service for resilience test: {}", e));
                    }
                }

                // Test Case 4: Concurrent Connection Management
                let concurrent_test_start = Instant::now();
                let mut concurrent_tasks = Vec::new();

                for i in 0..5 {
                    let mut client_clone = tli_client.clone();
                    let task = tokio::spawn(async move {
                        // Test concurrent health checks
                        let health_results = futures::join!(
                            client_clone.check_service_health("trading"),
                            client_clone.check_service_health("backtesting"),
                            client_clone.check_service_health("ml_training")
                        );

                        (i, health_results)
                    });
                    concurrent_tasks.push(task);
                }

                let mut concurrent_success = 0;
                let mut concurrent_failures = 0;

                for task in concurrent_tasks {
                    match task.await {
                        Ok((task_id, (trading_health, backtesting_health, ml_health))) => {
                            let mut task_success = true;

                            if trading_health.is_err() || backtesting_health.is_err() || ml_health.is_err() {
                                task_success = false;
                            }

                            if task_success {
                                concurrent_success += 1;
                            } else {
                                concurrent_failures += 1;
                            }
                        }
                        Err(_) => {
                            concurrent_failures += 1;
                        }
                    }
                }

                let concurrent_duration = concurrent_test_start.elapsed();

                if concurrent_failures == 0 {
                    test_results.add_success(&format!(
                        "All {} concurrent connection tests passed in {}ms",
                        concurrent_success, concurrent_duration.as_millis()
                    ));
                } else {
                    test_results.add_failure(&format!(
                        "Concurrent connection test failures: {} success, {} failures",
                        concurrent_success, concurrent_failures
                    ));
                }
            }
            Err(e) => {
                test_results.add_failure(&format!("Failed to initialize TLI client: {}", e));
            }
        }

        test_results.duration = start_time.elapsed();
        test_results.finalize();

        Ok(test_results)
    }

    /// Test Suite 2: Command Execution Interface
    ///
    /// Validates TLI's command processing and execution:
    /// - Command parsing and validation
    ///
    /// - Service command routing
    /// - Response formatting and display
    ///
    /// - Error handling and user feedback
    pub async fn test_command_execution_interface(&self) -> IntegrationTestResult {
        println!("⌨️ Testing TLI Client - Command Execution Interface");

        let start_time = Instant::now();
        let mut test_results = IntegrationTestResult::new("TLI Client Command Execution Interface");

        // Initialize TLI client for command testing
        let tli_client_config = TLIClientConfig {
            service_endpoints: {
                let mut endpoints = HashMap::new();
                endpoints.insert("trading".to_string(), "http://localhost:50051".to_string());
                endpoints.insert("backtesting".to_string(), "http://localhost:50052".to_string());
                endpoints.insert("ml_training".to_string(), "http://localhost:50053".to_string());
                endpoints
            },
            connection_timeout_ms: 5000,
            retry_attempts: 3,
            retry_delay_ms: 1000,
            keepalive_interval_s: 30,
        };

        match TLIClient::new(tli_client_config).await {
            Ok(mut tli_client) => {
                test_results.add_success("TLI client initialized for command testing");

                // Ensure connections are established
                tokio::time::sleep(Duration::from_millis(1000)).await;

                // Test Case 1: Basic Command Parsing
                let test_commands = vec![
                    ("help", CommandType::Help, "Display help information"),
                    ("status", CommandType::Status, "Show system status"),
                    ("list orders", CommandType::ListOrders, "List active orders"),
                    ("list positions", CommandType::ListPositions, "List open positions"),
                    ("start backtest --strategy SMA --symbol EURUSD", CommandType::StartBacktest, "Start backtesting"),
                    ("train model --type MAMBA --symbol EURUSD", CommandType::TrainModel, "Train ML model"),
                    ("config get trading.max_position_size", CommandType::ConfigGet, "Get configuration value"),
                    ("config set trading.max_position_size 1000000", CommandType::ConfigSet, "Set configuration value"),
                ];

                for (command_str, expected_type, description) in &test_commands {
                    let parse_start = Instant::now();
                    match tli_client.parse_command(command_str).await {
                        Ok(parsed_command) => {
                            let parse_duration = parse_start.elapsed();
                            test_results.add_success(&format!("Parsed command: {} - {}", command_str, description));

                            if parsed_command.command_type == *expected_type {
                                test_results.add_success(&format!("Command type correctly identified: {:?}", expected_type));
                            } else {
                                test_results.add_failure(&format!(
                                    "Command type mismatch for '{}': expected {:?}, got {:?}",
                                    command_str, expected_type, parsed_command.command_type
                                ));
                            }

                            if parse_duration.as_micros() <= 1000 { // < 1ms for parsing
                                test_results.add_success(&format!(
                                    "Command parsing time acceptable: {}μs",
                                    parse_duration.as_micros()
                                ));
                            } else {
                                test_results.add_failure(&format!(
                                    "Command parsing time too long: {}μs",
                                    parse_duration.as_micros()
                                ));
                            }
                        }
                        Err(e) => {
                            test_results.add_failure(&format!("Failed to parse command '{}': {}", command_str, e));
                        }
                    }
                }

                // Test Case 2: Service Command Execution
                let service_commands = vec![
                    (
                        "status",
                        CommandType::Status,
                        "System status",
                        None, // No specific service
                    ),
                    (
                        "list orders",
                        CommandType::ListOrders,
                        "List orders from trading service",
                        Some("trading"),
                    ),
                    (
                        "list positions",
                        CommandType::ListPositions,
                        "List positions from trading service",
                        Some("trading"),
                    ),
                ];

                for (command_str, command_type, description, target_service) in &service_commands {
                    let execute_start = Instant::now();
                    match tli_client.execute_command(command_str).await {
                        Ok(command_result) => {
                            let execute_duration = execute_start.elapsed();
                            test_results.add_success(&format!("Executed command: {} - {}", command_str, description));

                            // Validate command result structure
                            if command_result.success {
                                test_results.add_success(&format!("Command '{}' executed successfully", command_str));
                            } else {
                                test_results.add_failure(&format!(
                                    "Command '{}' failed: {}",
                                    command_str,
                                    command_result.error_message.unwrap_or_else(|| "No error message".to_string())
                                ));
                            }

                            if command_result.response_data.is_some() {
                                test_results.add_success(&format!("Command '{}' returned data", command_str));
                            }

                            // Validate execution time based on command type
                            let max_duration = match command_type {
                                CommandType::Status => Duration::from_millis(500),
                                CommandType::ListOrders | CommandType::ListPositions => Duration::from_millis(1000),
                                _ => Duration::from_millis(2000),
                            };

                            if execute_duration <= max_duration {
                                test_results.add_success(&format!(
                                    "Command '{}' execution time acceptable: {}ms",
                                    command_str, execute_duration.as_millis()
                                ));
                            } else {
                                test_results.add_failure(&format!(
                                    "Command '{}' execution time too long: {}ms > {}ms",
                                    command_str, execute_duration.as_millis(), max_duration.as_millis()
                                ));
                            }
                        }
                        Err(e) => {
                            test_results.add_failure(&format!("Failed to execute command '{}': {}", command_str, e));
                        }
                    }
                }

                // Test Case 3: Invalid Command Handling
                let invalid_commands = vec![
                    "invalid_command",
                    "list unknown_entity",
                    "config set invalid.path value",
                    "train model --invalid-flag value",
                    "",  // Empty command
                ];

                for invalid_command in &invalid_commands {
                    match tli_client.execute_command(invalid_command).await {
                        Ok(result) => {
                            if !result.success {
                                test_results.add_success(&format!(
                                    "Invalid command '{}' properly rejected", invalid_command
                                ));
                            } else {
                                test_results.add_failure(&format!(
                                    "Invalid command '{}' was incorrectly accepted", invalid_command
                                ));
                            }
                        }
                        Err(_) => {
                            test_results.add_success(&format!(
                                "Invalid command '{}' properly raised error", invalid_command
                            ));
                        }
                    }
                }

                // Test Case 4: Concurrent Command Execution
                let concurrent_commands = vec![
                    "status",
                    "list orders",
                    "list positions",
                ];

                let concurrent_start = Instant::now();
                let mut concurrent_tasks = Vec::new();

                for (i, command) in concurrent_commands.into_iter().enumerate() {
                    let mut client_clone = tli_client.clone();
                    let command_str = command.to_string();

                    let task = tokio::spawn(async move {
                        let result = client_clone.execute_command(&command_str).await;
                        (i, command_str, result)
                    });

                    concurrent_tasks.push(task);
                }

                let mut concurrent_success = 0;
                let mut concurrent_failures = 0;

                for task in concurrent_tasks {
                    match task.await {
                        Ok((task_id, command_str, result)) => {
                            match result {
                                Ok(command_result) => {
                                    if command_result.success {
                                        concurrent_success += 1;
                                    } else {
                                        concurrent_failures += 1;
                                    }
                                }
                                Err(_) => {
                                    concurrent_failures += 1;
                                }
                            }
                        }
                        Err(_) => {
                            concurrent_failures += 1;
                        }
                    }
                }

                let concurrent_duration = concurrent_start.elapsed();

                if concurrent_failures == 0 {
                    test_results.add_success(&format!(
                        "All {} concurrent commands executed successfully in {}ms",
                        concurrent_success, concurrent_duration.as_millis()
                    ));
                } else {
                    test_results.add_failure(&format!(
                        "Concurrent command execution had failures: {} success, {} failures",
                        concurrent_success, concurrent_failures
                    ));
                }
            }
            Err(e) => {
                test_results.add_failure(&format!("Failed to initialize TLI client for command testing: {}", e));
            }
        }

        test_results.duration = start_time.elapsed();
        test_results.finalize();

        Ok(test_results)
    }

    /// Test Suite 3: Real-time Data Streaming
    ///
    /// Validates TLI's real-time data display capabilities:
    /// - Market data streaming and display
    ///
    /// - Order status updates
    /// - Performance metrics streaming
    ///
    /// - Dashboard refresh and updates
    pub async fn test_realtime_data_streaming(&self) -> IntegrationTestResult {
        println!("📊 Testing TLI Client - Real-time Data Streaming");

        let start_time = Instant::now();
        let mut test_results = IntegrationTestResult::new("TLI Client Real-time Data Streaming");

        // Initialize TLI client for streaming tests
        let tli_client_config = TLIClientConfig {
            service_endpoints: {
                let mut endpoints = HashMap::new();
                endpoints.insert("trading".to_string(), "http://localhost:50051".to_string());
                endpoints.insert("backtesting".to_string(), "http://localhost:50052".to_string());
                endpoints.insert("ml_training".to_string(), "http://localhost:50053".to_string());
                endpoints
            },
            connection_timeout_ms: 5000,
            retry_attempts: 3,
            retry_delay_ms: 1000,
            keepalive_interval_s: 30,
        };

        match TLIClient::new(tli_client_config).await {
            Ok(mut tli_client) => {
                test_results.add_success("TLI client initialized for streaming tests");

                // Test Case 1: Market Data Streaming
                let market_symbols = vec!["EURUSD", "GBPUSD", "USDJPY"];

                for symbol in &market_symbols {
                    let stream_start = Instant::now();
                    match tli_client.subscribe_market_data(symbol).await {
                        Ok(mut stream) => {
                            test_results.add_success(&format!("Subscribed to {} market data stream", symbol));

                            // Collect some streaming data
                            let mut tick_count = 0;
                            let max_ticks = 10;
                            let timeout_duration = Duration::from_secs(5);

                            while tick_count < max_ticks {
                                match timeout(Duration::from_millis(500), stream.next()).await {
                                    Ok(Some(tick_data)) => {
                                        tick_count += 1;

                                        // Validate tick data structure
                                        if tick_data.symbol == *symbol {
                                            test_results.add_success(&format!(
                                                "Received valid {} tick: bid={:.5}, ask={:.5}",
                                                symbol, tick_data.bid, tick_data.ask
                                            ));
                                        } else {
                                            test_results.add_failure(&format!(
                                                "Tick data symbol mismatch: expected {}, got {}",
                                                symbol, tick_data.symbol
                                            ));
                                        }

                                        // Validate tick data freshness
                                        let tick_age = chrono::Utc::now().signed_duration_since(tick_data.timestamp);
                                        if tick_age.num_seconds() <= 2 {
                                            test_results.add_success(&format!("{} tick data is fresh", symbol));
                                        } else {
                                            test_results.add_failure(&format!(
                                                "{} tick data is stale: {} seconds old",
                                                symbol, tick_age.num_seconds()
                                            ));
                                        }
                                    }
                                    Ok(None) => {
                                        test_results.add_failure(&format!("Market data stream for {} ended unexpectedly", symbol));
                                        break;
                                    }
                                    Err(_) => {
                                        // Timeout - continue waiting
                                        continue;
                                    }
                                }

                                if stream_start.elapsed() > timeout_duration {
                                    break;
                                }
                            }

                            if tick_count > 0 {
                                test_results.add_success(&format!(
                                    "Received {} ticks for {} in streaming test",
                                    tick_count, symbol
                                ));
                            } else {
                                test_results.add_failure(&format!(
                                    "No ticks received for {} within timeout",
                                    symbol
                                ));
                            }

                            // Unsubscribe
                            match tli_client.unsubscribe_market_data(symbol).await {
                                Ok(_) => {
                                    test_results.add_success(&format!("Unsubscribed from {} market data", symbol));
                                }
                                Err(e) => {
                                    test_results.add_failure(&format!("Failed to unsubscribe from {}: {}", symbol, e));
                                }
                            }
                        }
                        Err(e) => {
                            test_results.add_failure(&format!("Failed to subscribe to {} market data: {}", symbol, e));
                        }
                    }
                }

                // Test Case 2: Order Status Streaming
                match tli_client.subscribe_order_updates().await {
                    Ok(mut order_stream) => {
                        test_results.add_success("Subscribed to order status updates");

                        // Place a test order to generate updates
                        let test_order = TestOrder {
                            symbol: "EURUSD".to_string(),
                            side: "buy".to_string(),
                            quantity: 100000.0,
                            order_type: "market".to_string(),
                        };

                        match tli_client.execute_command(&format!(
                            "place order --symbol {} --side {} --quantity {} --type {}",
                            test_order.symbol, test_order.side, test_order.quantity, test_order.order_type
                        )).await {
                            Ok(order_result) => {
                                if order_result.success {
                                    test_results.add_success("Test order placed for streaming validation");

                                    // Listen for order updates
                                    let mut update_count = 0;
                                    let max_updates = 3;
                                    let update_timeout = Duration::from_secs(10);
                                    let update_start = Instant::now();

                                    while update_count < max_updates && update_start.elapsed() < update_timeout {
                                        match timeout(Duration::from_millis(1000), order_stream.next()).await {
                                            Ok(Some(order_update)) => {
                                                update_count += 1;
                                                test_results.add_success(&format!(
                                                    "Received order update #{}: status={}",
                                                    update_count, order_update.status
                                                ));

                                                // Validate update structure
                                                if order_update.order_id.is_some() {
                                                    test_results.add_success("Order update contains order ID");
                                                } else {
                                                    test_results.add_failure("Order update missing order ID");
                                                }

                                                if order_update.timestamp.is_some() {
                                                    test_results.add_success("Order update contains timestamp");
                                                } else {
                                                    test_results.add_failure("Order update missing timestamp");
                                                }
                                            }
                                            Ok(None) => {
                                                test_results.add_failure("Order update stream ended unexpectedly");
                                                break;
                                            }
                                            Err(_) => {
                                                // Timeout - continue waiting
                                                continue;
                                            }
                                        }
                                    }

                                    if update_count > 0 {
                                        test_results.add_success(&format!("Received {} order updates", update_count));
                                    } else {
                                        test_results.add_failure("No order updates received");
                                    }
                                } else {
                                    test_results.add_failure("Failed to place test order for streaming");
                                }
                            }
                            Err(e) => {
                                test_results.add_failure(&format!("Failed to execute order command: {}", e));
                            }
                        }

                        // Unsubscribe from order updates
                        match tli_client.unsubscribe_order_updates().await {
                            Ok(_) => {
                                test_results.add_success("Unsubscribed from order updates");
                            }
                            Err(e) => {
                                test_results.add_failure(&format!("Failed to unsubscribe from order updates: {}", e));
                            }
                        }
                    }
                    Err(e) => {
                        test_results.add_failure(&format!("Failed to subscribe to order updates: {}", e));
                    }
                }

                // Test Case 3: Performance Metrics Streaming
                match tli_client.subscribe_performance_metrics().await {
                    Ok(mut metrics_stream) => {
                        test_results.add_success("Subscribed to performance metrics stream");

                        let mut metrics_count = 0;
                        let max_metrics = 5;
                        let metrics_timeout = Duration::from_secs(15);
                        let metrics_start = Instant::now();

                        while metrics_count < max_metrics && metrics_start.elapsed() < metrics_timeout {
                            match timeout(Duration::from_millis(2000), metrics_stream.next()).await {
                                Ok(Some(performance_metrics)) => {
                                    metrics_count += 1;
                                    test_results.add_success(&format!(
                                        "Received performance metrics #{}", metrics_count
                                    ));

                                    // Validate metrics structure
                                    if performance_metrics.latency_stats.is_some() {
                                        let latency = performance_metrics.latency_stats.unwrap();
                                        test_results.add_success(&format!(
                                            "Latency metrics: avg={}μs, p99={}μs",
                                            latency.average_us, latency.p99_us
                                        ));
                                    }

                                    if performance_metrics.throughput_stats.is_some() {
                                        let throughput = performance_metrics.throughput_stats.unwrap();
                                        test_results.add_success(&format!(
                                            "Throughput metrics: {}ops/s",
                                            throughput.operations_per_second
                                        ));
                                    }

                                    if performance_metrics.system_stats.is_some() {
                                        test_results.add_success("System stats included in performance metrics");
                                    }
                                }
                                Ok(None) => {
                                    test_results.add_failure("Performance metrics stream ended unexpectedly");
                                    break;
                                }
                                Err(_) => {
                                    // Timeout - continue waiting
                                    continue;
                                }
                            }
                        }

                        if metrics_count > 0 {
                            test_results.add_success(&format!("Received {} performance metric updates", metrics_count));
                        } else {
                            test_results.add_failure("No performance metrics received");
                        }

                        // Unsubscribe
                        match tli_client.unsubscribe_performance_metrics().await {
                            Ok(_) => {
                                test_results.add_success("Unsubscribed from performance metrics");
                            }
                            Err(e) => {
                                test_results.add_failure(&format!("Failed to unsubscribe from performance metrics: {}", e));
                            }
                        }
                    }
                    Err(e) => {
                        test_results.add_failure(&format!("Failed to subscribe to performance metrics: {}", e));
                    }
                }

                // Test Case 4: Multiple Stream Management
                let multi_stream_start = Instant::now();
                let mut active_streams = 0;

                // Subscribe to multiple streams simultaneously
                let eurusd_stream = tli_client.subscribe_market_data("EURUSD").await;
                let gbpusd_stream = tli_client.subscribe_market_data("GBPUSD").await;
                let performance_stream = tli_client.subscribe_performance_metrics().await;

                if eurusd_stream.is_ok() { active_streams += 1; }
                if gbpusd_stream.is_ok() { active_streams += 1; }
                if performance_stream.is_ok() { active_streams += 1; }

                test_results.add_success(&format!("Successfully started {} simultaneous streams", active_streams));

                // Let streams run for a short time
                tokio::time::sleep(Duration::from_secs(3)).await;

                // Clean up all streams
                let _ = tli_client.unsubscribe_market_data("EURUSD").await;
                let _ = tli_client.unsubscribe_market_data("GBPUSD").await;
                let _ = tli_client.unsubscribe_performance_metrics().await;

                let multi_stream_duration = multi_stream_start.elapsed();
                test_results.add_success(&format!(
                    "Multiple stream test completed in {}s",
                    multi_stream_duration.as_secs()
                ));
            }
            Err(e) => {
                test_results.add_failure(&format!("Failed to initialize TLI client for streaming tests: {}", e));
            }
        }

        test_results.duration = start_time.elapsed();
        test_results.finalize();

        Ok(test_results)
    }

    /// Execute complete TLI Client test suite
    pub async fn run_all_tests(&self) -> Result<Vec<IntegrationTestResult>, Box<dyn std::error::Error>> {
        println!("🚀 Starting TLI Client Integration Test Suite");

        let mut results = Vec::new();

        // Test Suite 1: Service Connection Management
        match timeout(Duration::from_secs(self.orchestrator.config.test_timeout_secs),
                     self.test_service_connection_management()).await {
            Ok(Ok(result)) => results.push(result),
            Ok(Err(e)) => {
                let mut failed_result = IntegrationTestResult::new("TLI Client Service Connection Management");
                failed_result.add_failure(&format!("Test suite failed: {}", e));
                failed_result.finalize();
                results.push(failed_result);
            },
            Err(_) => {
                let mut timeout_result = IntegrationTestResult::new("TLI Client Service Connection Management");
                timeout_result.add_failure("Test suite timed out");
                timeout_result.finalize();
                results.push(timeout_result);
            }
        }

        // Test Suite 2: Command Execution Interface
        match timeout(Duration::from_secs(self.orchestrator.config.test_timeout_secs),
                     self.test_command_execution_interface()).await {
            Ok(Ok(result)) => results.push(result),
            Ok(Err(e)) => {
                let mut failed_result = IntegrationTestResult::new("TLI Client Command Execution Interface");
                failed_result.add_failure(&format!("Test suite failed: {}", e));
                failed_result.finalize();
                results.push(failed_result);
            },
            Err(_) => {
                let mut timeout_result = IntegrationTestResult::new("TLI Client Command Execution Interface");
                timeout_result.add_failure("Test suite timed out");
                timeout_result.finalize();
                results.push(timeout_result);
            }
        }

        // Test Suite 3: Real-time Data Streaming
        match timeout(Duration::from_secs(self.orchestrator.config.test_timeout_secs * 2),
                     self.test_realtime_data_streaming()).await {
            Ok(Ok(result)) => results.push(result),
            Ok(Err(e)) => {
                let mut failed_result = IntegrationTestResult::new("TLI Client Real-time Data Streaming");
                failed_result.add_failure(&format!("Test suite failed: {}", e));
                failed_result.finalize();
                results.push(failed_result);
            },
            Err(_) => {
                let mut timeout_result = IntegrationTestResult::new("TLI Client Real-time Data Streaming");
                timeout_result.add_failure("Test suite timed out");
                timeout_result.finalize();
                results.push(timeout_result);
            }
        }

        // Print summary
        let total_tests = results.len();
        let passed_tests = results.iter().filter(|r| r.passed).count();
        let failed_tests = total_tests - passed_tests;

        println!("📊 TLI Client Integration Test Summary:");
        println!("   Total Test Suites: {}", total_tests);
        println!("   Passed: {} ✅", passed_tests);
        println!("   Failed: {} ❌", failed_tests);

        if failed_tests == 0 {
            println!("🎉 All TLI Client integration tests passed!");
        } else {
            println!("⚠️ {} TLI Client integration test suite(s) failed", failed_tests);
        }

        Ok(results)
    }
}

// Supporting types for TLI client tests
#[derive(Debug, Clone)]
pub struct TLIClientConfig {
    pub service_endpoints: HashMap<String, String>,
    pub connection_timeout_ms: u64,
    pub retry_attempts: usize,
    pub retry_delay_ms: u64,
    pub keepalive_interval_s: u64,
}

#[derive(Debug, Clone)]
pub struct TestOrder {
    pub symbol: String,
    pub side: String,
    pub quantity: f64,
    pub order_type: String,
}

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

    #[tokio::test]
    async fn integration_test_tli_client_complete() {
        let test_suite = TLIClientTests::new().await
            .expect("Failed to initialize TLI Client test suite");

        let results = test_suite.run_all_tests().await
            .expect("Failed to run TLI Client test suite");

        // Ensure all tests passed
        for result in &results {
            assert!(result.passed, "Test suite '{}' failed: {:?}", result.test_name, result.failures);
        }

        // Validate performance requirements met
        for result in &results {
            assert!(
                result.duration.as_secs() <= 120, // 2 minutes max for TLI tests
                "Test suite '{}' took too long: {}s",
                result.test_name,
                result.duration.as_secs()
            );
        }
    }
}