using NT8.Core.Common.Models;
using NT8.Core.Risk;
using NT8.Core.Sizing;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace NT8.Core.Orders
{
    /// <summary>
    /// Order manager implementation with smart routing and algorithmic execution
    /// </summary>
    public class OrderManager : IOrderManager
    {
        private readonly IRiskManager _riskManager;
        private readonly IPositionSizer _positionSizer;
        private readonly ILogger<OrderManager> _logger;
        private readonly object _lock = new object();

        // Configuration
        private RoutingConfig _routingConfig;
        private AlgorithmParameters _algorithmParameters;

        // State
        private readonly Dictionary<string, OrderStatus> _orders;
        private readonly Dictionary<string, ExecutionVenue> _venues;
        private readonly RoutingMetrics _routingMetrics;
        private readonly OmsMetrics _omsMetrics;

        /// <summary>
        /// Constructor for OrderManager
        /// </summary>
        public OrderManager(
            IRiskManager riskManager,
            IPositionSizer positionSizer,
            ILogger<OrderManager> logger)
        {
            if (riskManager == null) throw new ArgumentNullException("riskManager");
            if (positionSizer == null) throw new ArgumentNullException("positionSizer");
            if (logger == null) throw new ArgumentNullException("logger");

            _riskManager = riskManager;
            _positionSizer = positionSizer;
            _logger = logger;

            _orders = new Dictionary<string, OrderStatus>();
            _venues = new Dictionary<string, ExecutionVenue>();

            var venuePerformance = new Dictionary<string, VenueMetrics>();
            _routingMetrics = new RoutingMetrics(venuePerformance, 0, 0.0, DateTime.UtcNow);

            _omsMetrics = new OmsMetrics(0, 0, 0, 0.0, 0.0, 0.0, 0, DateTime.UtcNow);

            InitializeDefaultConfig();
            InitializeVenues();
        }

        private void InitializeDefaultConfig()
        {
            var venuePreferences = new Dictionary<string, double>();
            venuePreferences.Add("Primary", 1.0);
            venuePreferences.Add("Secondary", 0.8);

            _routingConfig = new RoutingConfig(
                true,  // SmartRoutingEnabled
                "Primary",  // DefaultVenue
                venuePreferences,
                0.5, // MaxSlippagePercent
                TimeSpan.FromSeconds(30),  // MaxRoutingTime
                true,  // RouteByCost
                true,  // RouteBySpeed
                true   // RouteByReliability
            );

            var twapConfig = new TwapConfig(TimeSpan.FromMinutes(15), 30, true);
            var vwapConfig = new VwapConfig(0.1, true);
            var icebergConfig = new IcebergConfig(0.1, true);

            _algorithmParameters = new AlgorithmParameters(twapConfig, vwapConfig, icebergConfig);
        }

        private void InitializeVenues()
        {
            var primaryVenue = new ExecutionVenue(
                "Primary", "Primary execution venue", true, 1.0, 1.0, 0.99);
            _venues.Add("Primary", primaryVenue);

            var secondaryVenue = new ExecutionVenue(
                "Secondary", "Backup execution venue", true, 1.2, 0.9, 0.95);
            _venues.Add("Secondary", secondaryVenue);
        }

        #region Order Submission and Management

        /// <summary>
        /// Submit a new order for execution
        /// </summary>
        public async Task<OrderResult> SubmitOrderAsync(OrderRequest request, StrategyContext context)
        {
            if (request == null) throw new ArgumentNullException("request");
            if (context == null) throw new ArgumentNullException("context");

            try
            {
                _logger.LogInformation(String.Format("Submitting order for {0} {1} {2}",
                    request.Symbol, request.Side, request.Quantity));

                // 1. Validate order through risk management
                var riskDecision = await ValidateOrderAsync(request, context);
                if (!riskDecision.Allow)
                {
                    _logger.LogWarning(String.Format("Order rejected by risk management: {0}", riskDecision.RejectReason));
                    return new OrderResult(false, null, riskDecision.RejectReason, null);
                }

                // 2. Route order based on smart routing logic
                var routingResult = await RouteOrderAsync(request, context);
                if (!routingResult.Success)
                {
                    _logger.LogError(String.Format("Order routing failed: {0}", routingResult.Message));
                    return new OrderResult(false, null, routingResult.Message, null);
                }

                // 3. Submit to selected venue (simulated)
                var orderId = Guid.NewGuid().ToString();

                var fills = new List<OrderFill>();
                var orderStatus = new OrderStatus(
                    orderId, request.Symbol, request.Side, request.Type, request.Quantity, 0,
                    request.LimitPrice, request.StopPrice, OrderState.Submitted, DateTime.UtcNow, null,
                    fills);

                lock (_lock)
                {
                    _orders[orderId] = orderStatus;
                    UpdateOmsMetrics();
                }

                _logger.LogInformation(String.Format("Order {0} submitted to {1}", orderId, routingResult.SelectedVenue.Name));

                return new OrderResult(true, orderId, "Order submitted successfully", orderStatus);
            }
            catch (Exception ex)
            {
                _logger.LogError(String.Format("Error submitting order for {0}: {1}", request.Symbol, ex.Message));
                return new OrderResult(false, null, String.Format("Error submitting order: {0}", ex.Message), null);
            }
        }

        /// <summary>
        /// Cancel an existing order
        /// </summary>
        public async Task<bool> CancelOrderAsync(string orderId)
        {
            if (string.IsNullOrEmpty(orderId)) throw new ArgumentException("Order ID required", "orderId");

            try
            {
                lock (_lock)
                {
                    if (!_orders.ContainsKey(orderId))
                    {
                        _logger.LogWarning(String.Format("Cannot cancel order {0} - not found", orderId));
                        return false;
                    }

                    var order = _orders[orderId];
                    if (order.State == OrderState.Filled || order.State == OrderState.Cancelled)
                    {
                        _logger.LogWarning(String.Format("Cannot cancel order {0} - already {1}", orderId, order.State));
                        return false;
                    }

                    // Update order state to cancelled
                    var fills = new List<OrderFill>();
                    foreach (var fill in order.Fills)
                    {
                        fills.Add(fill);
                    }

                    var updatedOrder = new OrderStatus(
                        order.OrderId, order.Symbol, order.Side, order.Type, order.Quantity, order.FilledQuantity,
                        order.LimitPrice, order.StopPrice, OrderState.Cancelled, order.CreatedTime, DateTime.UtcNow,
                        fills);
                    _orders[orderId] = updatedOrder;

                    UpdateOmsMetrics();
                }

                _logger.LogInformation(String.Format("Order {0} cancelled successfully", orderId));
                return true;
            }
            catch (Exception ex)
            {
                _logger.LogError(String.Format("Error cancelling order {0}: {1}", orderId, ex.Message));
                return false;
            }
        }

        /// <summary>
        /// Modify an existing order
        /// </summary>
        public async Task<OrderResult> ModifyOrderAsync(string orderId, OrderModification modification)
        {
            if (string.IsNullOrEmpty(orderId)) throw new ArgumentException("Order ID required", "orderId");
            if (modification == null) throw new ArgumentNullException("modification");

            try
            {
                lock (_lock)
                {
                    if (!_orders.ContainsKey(orderId))
                    {
                        _logger.LogWarning(String.Format("Cannot modify order {0} - not found", orderId));
                        return new OrderResult(false, null, "Order not found", null);
                    }

                    var order = _orders[orderId];
                    if (order.State != OrderState.Submitted && order.State != OrderState.Accepted)
                    {
                        _logger.LogWarning(String.Format("Cannot modify order {0} - state is {1}", orderId, order.State));
                        return new OrderResult(false, null, String.Format("Cannot modify order in state {0}", order.State), null);
                    }

                    // Update order with modification parameters
                    var fills = new List<OrderFill>();
                    foreach (var fill in order.Fills)
                    {
                        fills.Add(fill);
                    }

                    var updatedOrder = new OrderStatus(
                        order.OrderId, order.Symbol, order.Side, order.Type,
                        modification.NewQuantity.HasValue ? modification.NewQuantity.Value : order.Quantity,
                        order.FilledQuantity,
                        modification.NewLimitPrice.HasValue ? modification.NewLimitPrice.Value : order.LimitPrice,
                        modification.NewStopPrice.HasValue ? modification.NewStopPrice.Value : order.StopPrice,
                        order.State, order.CreatedTime, order.FilledTime,
                        fills);

                    _orders[orderId] = updatedOrder;

                    _logger.LogInformation(String.Format("Order {0} modified successfully", orderId));

                    return new OrderResult(true, orderId, "Order modified successfully", updatedOrder);
                }
            }
            catch (Exception ex)
            {
                _logger.LogError(String.Format("Error modifying order {0}: {1}", orderId, ex.Message));
                return new OrderResult(false, null, String.Format("Error modifying order: {0}", ex.Message), null);
            }
        }

        /// <summary>
        /// Get order status
        /// </summary>
        public async Task<OrderStatus> GetOrderStatusAsync(string orderId)
        {
            if (string.IsNullOrEmpty(orderId)) throw new ArgumentException("Order ID required", "orderId");

            lock (_lock)
            {
                if (_orders.ContainsKey(orderId))
                {
                    return _orders[orderId];
                }
                return null;
            }
        }

        /// <summary>
        /// Get all orders for a symbol
        /// </summary>
        public async Task<List<OrderStatus>> GetOrdersBySymbolAsync(string symbol)
        {
            if (string.IsNullOrEmpty(symbol)) throw new ArgumentException("Symbol required", "symbol");

            var result = new List<OrderStatus>();

            lock (_lock)
            {
                foreach (var order in _orders.Values)
                {
                    if (order.Symbol.Equals(symbol, StringComparison.OrdinalIgnoreCase))
                    {
                        result.Add(order);
                    }
                }
            }

            return result;
        }

        /// <summary>
        /// Get all active orders
        /// </summary>
        public async Task<List<OrderStatus>> GetActiveOrdersAsync()
        {
            var result = new List<OrderStatus>();

            lock (_lock)
            {
                foreach (var order in _orders.Values)
                {
                    if (order.State == OrderState.Submitted ||
                        order.State == OrderState.Accepted ||
                        order.State == OrderState.PartiallyFilled)
                    {
                        result.Add(order);
                    }
                }
            }

            return result;
        }

        #endregion

        #region Algorithmic Execution

        /// <summary>
        /// Execute a TWAP order
        /// </summary>
        public async Task<OrderResult> ExecuteTwapAsync(TwapParameters parameters, StrategyContext context)
        {
            if (parameters == null) throw new ArgumentNullException("parameters");
            if (context == null) throw new ArgumentNullException("context");

            _logger.LogInformation(String.Format("Executing TWAP order for {0} {1} {2} over {3}",
                parameters.Symbol, parameters.Side, parameters.TotalQuantity, parameters.Duration));

            // Create a parent order for tracking
            var parentOrderId = Guid.NewGuid().ToString();

            // Calculate slice parameters
            var sliceCount = (int)(parameters.Duration.TotalSeconds / parameters.IntervalSeconds);
            var sliceQuantity = parameters.TotalQuantity / sliceCount;

            // Execute slices
            for (int i = 0; i < sliceCount; i++)
            {
                // Create slice order
                var algorithmParameters = new Dictionary<string, object>();
                var sliceRequest = new OrderRequest(
                    parameters.Symbol,
                    parameters.Side,
                    OrderType.Market, // Simplified to market orders
                    sliceQuantity,
                    parameters.LimitPrice,
                    null, // StopPrice
                    TimeInForce.Day,
                    null, // No algorithm for slices
                    algorithmParameters
                );

                // Submit slice order
                var result = await SubmitOrderAsync(sliceRequest, context);

                if (!result.Success)
                {
                    _logger.LogWarning(String.Format("TWAP slice {0}/{1} failed: {2}",
                        i + 1, sliceCount, result.Message));
                }
                else
                {
                    _logger.LogInformation(String.Format("TWAP slice {0}/{1} submitted: {2}",
                        i + 1, sliceCount, result.OrderId));
                }

                // Wait for next interval (except for last slice)
                if (i < sliceCount - 1)
                {
                    await Task.Delay(TimeSpan.FromSeconds(parameters.IntervalSeconds));
                }
            }

            return new OrderResult(true, parentOrderId, "TWAP execution completed", null);
        }

        /// <summary>
        /// Execute a VWAP order
        /// </summary>
        public async Task<OrderResult> ExecuteVwapAsync(VwapParameters parameters, StrategyContext context)
        {
            if (parameters == null) throw new ArgumentNullException("parameters");
            if (context == null) throw new ArgumentNullException("context");

            _logger.LogInformation(String.Format("Executing VWAP order for {0} {1} {2} from {3} to {4}",
                parameters.Symbol, parameters.Side, parameters.TotalQuantity, parameters.StartTime, parameters.EndTime));

            // Create a parent order for tracking
            var parentOrderId = Guid.NewGuid().ToString();

            // Simplified VWAP implementation - in a real system, this would:
            // 1. Monitor market volume throughout the execution period
            // 2. Calculate participation rate based on target participation
            // 3. Execute orders in proportion to volume

            // For now, we'll execute the order as a single market order
            var algorithmParameters = new Dictionary<string, object>();
            var request = new OrderRequest(
                parameters.Symbol,
                parameters.Side,
                OrderType.Market,
                parameters.TotalQuantity,
                parameters.LimitPrice,
                null, // StopPrice
                TimeInForce.Day,
                null, // No algorithm for this simplified version
                algorithmParameters
            );

            var result = await SubmitOrderAsync(request, context);

            return new OrderResult(result.Success, parentOrderId,
                result.Success ? "VWAP execution completed" : String.Format("VWAP execution failed: {0}", result.Message),
                result.Status);
        }

        /// <summary>
        /// Execute an Iceberg order
        /// </summary>
        public async Task<OrderResult> ExecuteIcebergAsync(IcebergParameters parameters, StrategyContext context)
        {
            if (parameters == null) throw new ArgumentNullException("parameters");
            if (context == null) throw new ArgumentNullException("context");

            _logger.LogInformation(String.Format("Executing Iceberg order for {0} {1} {2} (visible: {3})",
                parameters.Symbol, parameters.Side, parameters.TotalQuantity, parameters.VisibleQuantity));

            // Create a parent order for tracking
            var parentOrderId = Guid.NewGuid().ToString();

            var remainingQuantity = parameters.TotalQuantity;

            while (remainingQuantity > 0)
            {
                // Determine visible quantity for this slice
                var visibleQuantity = Math.Min(parameters.VisibleQuantity, remainingQuantity);

                // Create slice order
                var algorithmParameters = new Dictionary<string, object>();
                OrderType orderType = parameters.LimitPrice.HasValue ? OrderType.Limit : OrderType.Market;

                var sliceRequest = new OrderRequest(
                    parameters.Symbol,
                    parameters.Side,
                    orderType,
                    visibleQuantity,
                    parameters.LimitPrice,
                    null, // StopPrice
                    TimeInForce.Day,
                    null, // No algorithm for slices
                    algorithmParameters
                );

                // Submit slice order
                var result = await SubmitOrderAsync(sliceRequest, context);

                if (!result.Success)
                {
                    _logger.LogWarning(String.Format("Iceberg slice failed with {0} qty remaining: {1}",
                        remainingQuantity, result.Message));
                    break;
                }

                // Update remaining quantity
                remainingQuantity -= visibleQuantity;

                _logger.LogInformation(String.Format("Iceberg slice submitted, {0} qty remaining", remainingQuantity));

                // In a real implementation, we would wait for the order to fill
                // before submitting the next slice. For this design, we'll add a delay.
                if (remainingQuantity > 0)
                {
                    await Task.Delay(TimeSpan.FromSeconds(5)); // Simulate time between slices
                }
            }

            return new OrderResult(true, parentOrderId, "Iceberg execution completed", null);
        }

        #endregion

        #region Smart Order Routing

        /// <summary>
        /// Route order based on smart routing logic
        /// </summary>
        public async Task<RoutingResult> RouteOrderAsync(OrderRequest request, StrategyContext context)
        {
            if (request == null) throw new ArgumentNullException("request");
            if (context == null) throw new ArgumentNullException("context");

            if (!_routingConfig.SmartRoutingEnabled)
            {
                var defaultVenue = _venues[_routingConfig.DefaultVenue];
                var routingDetails = new Dictionary<string, object>();
                routingDetails.Add("venue", defaultVenue.Name);

                return new RoutingResult(true, null, defaultVenue, "Routing disabled, using default venue",
                    routingDetails);
            }

            // Select best venue based on configuration
            var selectedVenue = SelectBestVenue(request, context);

            // Update routing metrics
            UpdateRoutingMetrics(selectedVenue);

            var routingDetails2 = new Dictionary<string, object>();
            routingDetails2.Add("venue", selectedVenue.Name);
            routingDetails2.Add("cost_factor", selectedVenue.CostFactor);
            routingDetails2.Add("speed_factor", selectedVenue.SpeedFactor);

            return new RoutingResult(true, null, selectedVenue, "Order routed successfully", routingDetails2);
        }

        private ExecutionVenue SelectBestVenue(OrderRequest request, StrategyContext context)
        {
            ExecutionVenue bestVenue = null;
            double bestScore = double.MinValue;

            foreach (var kvp in _venues)
            {
                var venue = kvp.Value;
                if (!venue.IsActive) continue;

                double score = 0;

                // Factor in venue preferences
                if (_routingConfig.VenuePreferences.ContainsKey(venue.Name))
                {
                    score += _routingConfig.VenuePreferences[venue.Name] * 100;
                }

                // Factor in cost if enabled
                if (_routingConfig.RouteByCost)
                {
                    score -= venue.CostFactor * 50; // Lower cost is better
                }

                // Factor in speed if enabled
                if (_routingConfig.RouteBySpeed)
                {
                    score += venue.SpeedFactor * 30; // Higher speed is better
                }

                // Factor in reliability
                if (_routingConfig.RouteByReliability)
                {
                    score += venue.ReliabilityFactor * 20; // Higher reliability is better
                }

                if (score > bestScore)
                {
                    bestScore = score;
                    bestVenue = venue;
                }
            }

            if (bestVenue != null)
            {
                return bestVenue;
            }

            return _venues[_routingConfig.DefaultVenue];
        }

        private void UpdateRoutingMetrics(ExecutionVenue venue)
        {
            lock (_lock)
            {
                VenueMetrics venueMetrics;
                if (_routingMetrics.VenuePerformance.ContainsKey(venue.Name))
                {
                    venueMetrics = _routingMetrics.VenuePerformance[venue.Name];
                }
                else
                {
                    venueMetrics = new VenueMetrics(venue.Name, 0, 0.0, 0.0, 0.0, 0);
                }

                var updatedMetrics = new VenueMetrics(
                    venueMetrics.VenueName,
                    venueMetrics.OrdersRouted + 1,
                    venueMetrics.FillRate,
                    venueMetrics.AverageSlippage,
                    venueMetrics.AverageExecutionTimeMs,
                    venueMetrics.TotalValueRouted
                );

                _routingMetrics.VenuePerformance[venue.Name] = updatedMetrics;
                _routingMetrics.TotalRoutedOrders++;
                _routingMetrics.LastUpdated = DateTime.UtcNow;
            }
        }

        /// <summary>
        /// Get available execution venues
        /// </summary>
        public List<ExecutionVenue> GetAvailableVenues()
        {
            lock (_lock)
            {
                var venues = new List<ExecutionVenue>();
                foreach (var kvp in _venues)
                {
                    var venue = kvp.Value;
                    if (venue.IsActive)
                    {
                        venues.Add(venue);
                    }
                }
                return venues;
            }
        }

        /// <summary>
        /// Get routing performance metrics
        /// </summary>
        public RoutingMetrics GetRoutingMetrics()
        {
            lock (_lock)
            {
                return _routingMetrics;
            }
        }

        #endregion

        #region Risk Integration

        /// <summary>
        /// Validate order against risk parameters
        /// </summary>
        public async Task<RiskDecision> ValidateOrderAsync(OrderRequest request, StrategyContext context)
        {
            if (request == null) throw new ArgumentNullException("request");
            if (context == null) throw new ArgumentNullException("context");

            // Convert OrderRequest to StrategyIntent for risk validation
            NT8.Core.Common.Models.OrderSide side;
            if (request.Side == OrderSide.Buy)
            {
                side = NT8.Core.Common.Models.OrderSide.Buy;
            }
            else
            {
                side = NT8.Core.Common.Models.OrderSide.Sell;
            }

            var intent = new StrategyIntent(
                request.Symbol,
                side,
                ConvertOrderType(request.Type),
                (double?)request.LimitPrice,
                GetStopTicks(request),
                null, // TargetTicks
                1.0, // Confidence
                "OMS Order Submission",
                new Dictionary<string, object>()
            );

            // Create a mock risk config for validation
            var riskConfig = new RiskConfig(1000, 200, 10, true);

            return _riskManager.ValidateOrder(intent, context, riskConfig);
        }

        private NT8.Core.Common.Models.OrderType ConvertOrderType(NT8.Core.Orders.OrderType orderType)
        {
            if (orderType == NT8.Core.Orders.OrderType.Market)
            {
                return NT8.Core.Common.Models.OrderType.Market;
            }
            else if (orderType == NT8.Core.Orders.OrderType.Limit)
            {
                return NT8.Core.Common.Models.OrderType.Limit;
            }
            else if (orderType == NT8.Core.Orders.OrderType.StopMarket)
            {
                return NT8.Core.Common.Models.OrderType.StopMarket;
            }
            else if (orderType == NT8.Core.Orders.OrderType.StopLimit)
            {
                return NT8.Core.Common.Models.OrderType.StopLimit;
            }

            return NT8.Core.Common.Models.OrderType.Market;
        }

        private int GetStopTicks(OrderRequest request)
        {
            // Simplified stop ticks calculation
            return 10;
        }

        #endregion

        #region Configuration and Management

        /// <summary>
        /// Update routing configuration
        /// </summary>
        public void UpdateRoutingConfig(RoutingConfig config)
        {
            if (config == null) throw new ArgumentNullException("config");

            lock (_lock)
            {
                _routingConfig = config;
            }

            _logger.LogInformation("Routing configuration updated");
        }

        /// <summary>
        /// Get current routing configuration
        /// </summary>
        public RoutingConfig GetRoutingConfig()
        {
            lock (_lock)
            {
                return _routingConfig;
            }
        }

        /// <summary>
        /// Update algorithm parameters
        /// </summary>
        public void UpdateAlgorithmParameters(AlgorithmParameters parameters)
        {
            if (parameters == null) throw new ArgumentNullException("parameters");

            lock (_lock)
            {
                _algorithmParameters = parameters;
            }

            _logger.LogInformation("Algorithm parameters updated");
        }

        /// <summary>
        /// Get current algorithm parameters
        /// </summary>
        public AlgorithmParameters GetAlgorithmParameters()
        {
            lock (_lock)
            {
                return _algorithmParameters;
            }
        }

        /// <summary>
        /// Reset OMS state
        /// </summary>
        public void Reset()
        {
            lock (_lock)
            {
                _orders.Clear();
                _routingMetrics.VenuePerformance.Clear();
                _routingMetrics.TotalRoutedOrders = 0;
                _routingMetrics.AverageRoutingTimeMs = 0.0;
                _routingMetrics.LastUpdated = DateTime.UtcNow;

                // Note: In a real implementation, we would need to update the OmsMetrics properties
                // Since they are read-only in the current implementation, we can't modify them directly
            }

            _logger.LogInformation("OMS state reset");
        }

        #endregion

        #region Monitoring and Metrics

        private void UpdateOmsMetrics()
        {
            lock (_lock)
            {
                var activeOrders = 0;
                var filledOrders = 0;
                var failedOrders = 0;
                var totalQuantity = 0;

                foreach (var kvp in _orders)
                {
                    var order = kvp.Value;
                    switch (order.State)
                    {
                        case OrderState.Submitted:
                        case OrderState.Accepted:
                        case OrderState.PartiallyFilled:
                            activeOrders++;
                            break;
                        case OrderState.Filled:
                            filledOrders++;
                            break;
                        case OrderState.Rejected:
                        case OrderState.Expired:
                        case OrderState.Cancelled:
                            failedOrders++;
                            break;
                    }

                    totalQuantity += order.Quantity;
                }

                var totalOrders = _orders.Count;
                var fillRate = totalOrders > 0 ? (double)filledOrders / totalOrders : 0.0;

                // We can't directly modify the properties of _omsMetrics since they're read-only
                // In a real implementation, we would have setters or create a new instance
                // For now, we'll just log the updated values
                _logger.LogDebug(String.Format("OMS Metrics - Total: {0}, Active: {1}, Failed: {2}, Fill Rate: {3:P2}",
                    totalOrders, activeOrders, failedOrders, fillRate));
            }
        }

        /// <summary>
        /// Get OMS performance metrics
        /// </summary>
        public OmsMetrics GetMetrics()
        {
            lock (_lock)
            {
                return _omsMetrics;
            }
        }

        /// <summary>
        /// Check if OMS is healthy
        /// </summary>
        public bool IsHealthy()
        {
            // Simple health check - in a real implementation, this would check:
            // - Connection to execution venues
            // - Risk management system availability
            // - Position sizing system availability
            // - Internal state consistency

            return true;
        }

        #endregion
    }
}
