//! Enhanced real-time dashboard for comprehensive operational monitoring
//!
//! Provides advanced web-based dashboard with:
//! - Real-time metrics visualization
//! - Interactive log exploration
//! - Distributed trace analysis
//! - Alert management interface
//! - Service health monitoring
//! - Performance analytics

use crate::monitoring::{LogAggregator, DistributedTracer, MetricsCollector};
use crate::monitoring::enhanced_alerts::EnhancedAlertManager;
use crate::monitoring::centralized_logging::{CentralizedLoggingSystem, EnhancedLogEntry};
use crate::monitoring::enhanced_tracing::{EnhancedDistributedTracer, Trace, TraceSpan};
use crate::network::error::{NetworkError, NetworkResult};
use serde::{Deserialize, Serialize};
use std::collections::{HashMap, BTreeMap, VecDeque};
use std::sync::{Arc, Mutex};
use std::time::{Duration, SystemTime, UNIX_EPOCH, Instant};
use tokio::sync::{RwLock, broadcast, mpsc};
use tokio::time::interval;
use uuid::Uuid;
use log::{debug, info, warn, error};
use chrono::{DateTime, Utc};

/// Enhanced dashboard configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EnhancedDashboardConfig {
    pub enabled: bool,
    pub port: u16,
    pub host: String,
    pub refresh_interval_seconds: u64,
    pub max_data_points: usize,
    pub enable_real_time: bool,
    pub enable_alerts: bool,
    pub enable_tracing: bool,
    pub enable_logs: bool,
    pub enable_metrics: bool,
    pub websocket_enabled: bool,
    pub authentication_enabled: bool,
    pub ssl_enabled: bool,
    pub cert_path: Option<String>,
    pub key_path: Option<String>,
    pub cors_enabled: bool,
    pub allowed_origins: Vec<String>,
}

impl Default for EnhancedDashboardConfig {
    fn default() -> Self {
        Self {
            enabled: true,
            port: 8080,
            host: "0.0.0.0".to_string(),
            refresh_interval_seconds: 5,
            max_data_points: 1000,
            enable_real_time: true,
            enable_alerts: true,
            enable_tracing: true,
            enable_logs: true,
            enable_metrics: true,
            websocket_enabled: true,
            authentication_enabled: false,
            ssl_enabled: false,
            cert_path: None,
            key_path: None,
            cors_enabled: true,
            allowed_origins: vec!["*".to_string()],
        }
    }
}

/// Dashboard widget types for customizable UI
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum WidgetType {
    MetricChart,
    LogViewer,
    AlertList,
    TraceViewer,
    ServiceMap,
    HealthStatus,
    PerformanceMetrics,
    ErrorRate,
    ThroughputChart,
    LatencyHeatmap,
    TopologyView,
    SystemResources,
}

/// Dashboard widget configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DashboardWidget {
    pub id: String,
    pub widget_type: WidgetType,
    pub title: String,
    pub position: WidgetPosition,
    pub size: WidgetSize,
    pub config: WidgetConfig,
    pub refresh_interval: Option<Duration>,
    pub data_source: DataSource,
}

/// Widget position on dashboard
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WidgetPosition {
    pub x: u32,
    pub y: u32,
    pub row: u32,
    pub col: u32,
}

/// Widget size configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WidgetSize {
    pub width: u32,
    pub height: u32,
    pub min_width: Option<u32>,
    pub min_height: Option<u32>,
}

/// Widget-specific configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WidgetConfig {
    pub time_range: TimeRange,
    pub filters: HashMap<String, String>,
    pub aggregation: Option<AggregationType>,
    pub threshold_alerts: Vec<ThresholdAlert>,
    pub visualization_type: VisualizationType,
    pub color_scheme: ColorScheme,
}

/// Time range for data display
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum TimeRange {
    LastMinute,
    Last5Minutes,
    Last15Minutes,
    LastHour,
    Last6Hours,
    Last24Hours,
    Last7Days,
    Custom { start: u64, end: u64 },
}

/// Data aggregation types
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AggregationType {
    Sum,
    Average,
    Min,
    Max,
    Count,
    Rate,
    Percentile(f64),
}

/// Threshold alert for widgets
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThresholdAlert {
    pub metric: String,
    pub threshold: f64,
    pub comparison: ComparisonOperator,
    pub severity: AlertSeverity,
}

/// Comparison operators for alerts
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ComparisonOperator {
    GreaterThan,
    LessThan,
    Equal,
    NotEqual,
    GreaterThanOrEqual,
    LessThanOrEqual,
}

/// Alert severity levels
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AlertSeverity {
    Info,
    Warning,
    Critical,
}

/// Visualization types for widgets
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum VisualizationType {
    LineChart,
    BarChart,
    PieChart,
    Gauge,
    Heatmap,
    Table,
    SingleStat,
    Graph,
    Map,
    Timeline,
}

/// Color schemes for visualization
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ColorScheme {
    Default,
    Dark,
    Light,
    HighContrast,
    Custom(Vec<String>),
}

/// Data sources for widgets
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum DataSource {
    Metrics,
    Logs,
    Traces,
    Alerts,
    System,
    Custom(String),
}

/// Dashboard layout configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DashboardLayout {
    pub id: String,
    pub name: String,
    pub description: String,
    pub widgets: Vec<DashboardWidget>,
    pub layout_type: LayoutType,
    pub created_at: u64,
    pub updated_at: u64,
    pub created_by: String,
    pub tags: Vec<String>,
    pub is_default: bool,
}

/// Dashboard layout types
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum LayoutType {
    Grid,
    Flow,
    Tabs,
    Columns,
    Custom,
}

/// Real-time data point for streaming
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DataPoint {
    pub timestamp: u64,
    pub value: f64,
    pub labels: HashMap<String, String>,
    pub metadata: Option<HashMap<String, serde_json::Value>>,
}

/// Time series data for charts
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TimeSeries {
    pub name: String,
    pub points: Vec<DataPoint>,
    pub unit: Option<String>,
    pub aggregation: Option<AggregationType>,
    pub tags: HashMap<String, String>,
}

/// Dashboard data container
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DashboardData {
    pub metrics: HashMap<String, TimeSeries>,
    pub logs: Vec<LogEntry>,
    pub alerts: Vec<AlertSummary>,
    pub traces: Vec<TraceSummary>,
    pub system_health: SystemHealth,
    pub node_status: HashMap<String, NodeStatus>,
    pub service_topology: ServiceTopology,
    pub performance_summary: PerformanceSummary,
    pub error_analysis: ErrorAnalysis,
}

/// Log entry for dashboard display
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct LogEntry {
    pub timestamp: u64,
    pub level: String,
    pub component: String,
    pub message: String,
    pub node_id: String,
    pub trace_id: Option<Uuid>,
    pub correlation_id: Option<String>,
    pub tags: Vec<String>,
}

/// Alert summary for dashboard
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AlertSummary {
    pub id: Uuid,
    pub rule_name: String,
    pub severity: String,
    pub state: String,
    pub message: String,
    pub started_at: u64,
    pub node_id: String,
    pub service: Option<String>,
    pub component: Option<String>,
}

/// Trace summary for dashboard
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TraceSummary {
    pub trace_id: Uuid,
    pub operation_name: String,
    pub duration_micros: u64,
    pub span_count: usize,
    pub error_count: usize,
    pub service_count: usize,
    pub start_time: u64,
    pub end_time: u64,
    pub services: Vec<String>,
    pub critical_path_duration: u64,
}

/// System health overview
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SystemHealth {
    pub overall_health: HealthStatus,
    pub service_health: HashMap<String, HealthStatus>,
    pub node_health: HashMap<String, HealthStatus>,
    pub active_alerts: usize,
    pub critical_alerts: usize,
    pub uptime_seconds: u64,
    pub last_updated: u64,
}

/// Health status levels
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum HealthStatus {
    Healthy,
    Warning,
    Critical,
    Unknown,
}

/// Node status information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct NodeStatus {
    pub node_id: String,
    pub status: String,
    pub last_seen: u64,
    pub cpu_usage: f64,
    pub memory_usage: f64,
    pub disk_usage: f64,
    pub network_throughput: f64,
    pub active_connections: u32,
    pub uptime: u64,
    pub version: String,
    pub services: Vec<String>,
}

/// Service topology information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceTopology {
    pub services: HashMap<String, ServiceInfo>,
    pub dependencies: Vec<ServiceDependency>,
    pub traffic_flow: Vec<TrafficFlow>,
    pub last_updated: u64,
}

/// Service information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceInfo {
    pub name: String,
    pub instances: Vec<ServiceInstance>,
    pub health: HealthStatus,
    pub request_rate: f64,
    pub error_rate: f64,
    pub response_time_p99: u64,
    pub cpu_usage: f64,
    pub memory_usage: f64,
}

/// Service instance information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceInstance {
    pub id: String,
    pub node_id: String,
    pub address: String,
    pub health: HealthStatus,
    pub last_health_check: u64,
}

/// Service dependency relationship
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceDependency {
    pub from_service: String,
    pub to_service: String,
    pub dependency_type: DependencyType,
    pub strength: f64,
    pub health: HealthStatus,
}

/// Dependency types
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum DependencyType {
    HttpCall,
    DatabaseConnection,
    MessageQueue,
    Cache,
    FileSystem,
    External,
}

/// Traffic flow between services
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TrafficFlow {
    pub from_service: String,
    pub to_service: String,
    pub requests_per_minute: f64,
    pub avg_latency_ms: f64,
    pub error_rate: f64,
}

/// Performance summary metrics
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceSummary {
    pub overall_throughput: f64,
    pub avg_response_time: u64,
    pub error_rate: f64,
    pub cpu_utilization: f64,
    pub memory_utilization: f64,
    pub network_utilization: f64,
    pub top_slow_operations: Vec<SlowOperation>,
    pub resource_bottlenecks: Vec<ResourceBottleneck>,
}

/// Slow operation analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SlowOperation {
    pub operation: String,
    pub service: String,
    pub avg_duration_ms: u64,
    pub call_count: u64,
    pub percentage_of_total_time: f64,
}

/// Resource bottleneck information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceBottleneck {
    pub resource_type: String,
    pub utilization: f64,
    pub threshold: f64,
    pub impact_services: Vec<String>,
    pub recommendation: String,
}

/// Error analysis summary
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ErrorAnalysis {
    pub total_errors: u64,
    pub error_rate: f64,
    pub errors_by_service: HashMap<String, u64>,
    pub errors_by_type: HashMap<String, u64>,
    pub error_trends: Vec<ErrorTrend>,
    pub top_errors: Vec<TopError>,
}

/// Error trend analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ErrorTrend {
    pub timestamp: u64,
    pub error_count: u64,
    pub error_rate: f64,
}

/// Top error information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TopError {
    pub error_type: String,
    pub count: u64,
    pub percentage: f64,
    pub first_seen: u64,
    pub last_seen: u64,
    pub affected_services: Vec<String>,
}

/// Enhanced real-time dashboard system
pub struct EnhancedDashboard {
    config: EnhancedDashboardConfig,
    node_id: String,

    // Monitoring components
    logging_system: Option<Arc<CentralizedLoggingSystem>>,
    tracing_system: Option<Arc<EnhancedDistributedTracer>>,
    alert_manager: Arc<EnhancedAlertManager>,
    metrics_collector: Arc<MetricsCollector>,

    // Dashboard state
    layouts: Arc<RwLock<HashMap<String, DashboardLayout>>>,
    active_sessions: Arc<RwLock<HashMap<String, DashboardSession>>>,

    // Real-time streaming
    data_stream_tx: broadcast::Sender<DashboardUpdate>,

    // Data cache
    data_cache: Arc<RwLock<DashboardData>>,
    last_update: Arc<Mutex<Instant>>,

    // Performance tracking
    dashboard_metrics: Arc<Mutex<DashboardMetrics>>,
}

/// Dashboard session information
#[derive(Debug, Clone)]
pub struct DashboardSession {
    pub session_id: String,
    pub user_id: Option<String>,
    pub connected_at: Instant,
    pub last_activity: Instant,
    pub active_layout: String,
    pub subscribed_widgets: Vec<String>,
}

/// Real-time dashboard updates
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DashboardUpdate {
    pub update_type: UpdateType,
    pub timestamp: u64,
    pub data: serde_json::Value,
    pub target_widgets: Option<Vec<String>>,
}

/// Types of dashboard updates
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum UpdateType {
    MetricUpdate,
    LogEntry,
    AlertTriggered,
    AlertResolved,
    TraceCompleted,
    HealthStatusChanged,
    ServiceStatusChanged,
    NodeStatusChanged,
    PerformanceAlert,
}

/// Dashboard performance metrics
#[derive(Debug, Default, Clone, Serialize, Deserialize)]
pub struct DashboardMetrics {
    pub page_views: u64,
    pub active_sessions: u64,
    pub data_queries: u64,
    pub real_time_updates: u64,
    pub avg_response_time_ms: f64,
    pub error_count: u64,
    pub cache_hits: u64,
    pub cache_misses: u64,
}

impl EnhancedDashboard {
    /// Create new enhanced dashboard
    pub fn new(
        config: EnhancedDashboardConfig,
        node_id: String,
        alert_manager: Arc<EnhancedAlertManager>,
        metrics_collector: Arc<MetricsCollector>,
    ) -> Self {
        let (data_stream_tx, _) = broadcast::channel(1000);

        Self {
            config,
            node_id,
            logging_system: None,
            tracing_system: None,
            alert_manager,
            metrics_collector,
            layouts: Arc::new(RwLock::new(HashMap::new())),
            active_sessions: Arc::new(RwLock::new(HashMap::new())),
            data_stream_tx,
            data_cache: Arc::new(RwLock::new(DashboardData::default())),
            last_update: Arc::new(Mutex::new(Instant::now())),
            dashboard_metrics: Arc::new(Mutex::new(DashboardMetrics::default())),
        }
    }

    /// Get dashboard configuration
    pub fn get_config(&self) -> &EnhancedDashboardConfig {
        &self.config
    }

    /// Get dashboard node ID
    pub fn get_node_id(&self) -> &str {
        &self.node_id
    }

    /// Set logging system
    pub fn set_logging_system(&mut self, logging_system: Arc<CentralizedLoggingSystem>) {
        self.logging_system = Some(logging_system);
    }

    /// Set tracing system
    pub fn set_tracing_system(&mut self, tracing_system: Arc<EnhancedDistributedTracer>) {
        self.tracing_system = Some(tracing_system);
    }

    /// Start the enhanced dashboard
    pub async fn start(&self) -> NetworkResult<()> {
        if !self.config.enabled {
            info!("Enhanced dashboard is disabled");
            return Ok(());
        }

        info!("Starting enhanced dashboard on {}:{}", self.config.host, self.config.port);

        // Create default layouts
        self.create_default_layouts().await?;

        // Start data collection task
        self.start_data_collection_task().await;

        // Start real-time streaming
        if self.config.enable_real_time {
            self.start_real_time_streaming().await;
        }

        // Start session management
        self.start_session_management().await;

        // Start performance monitoring
        self.start_performance_monitoring().await;

        info!("Enhanced dashboard started successfully");
        Ok(())
    }

    /// Create a new dashboard layout
    pub async fn create_layout(&self, layout: DashboardLayout) -> NetworkResult<()> {
        let mut layouts = self.layouts.write().await;
        layouts.insert(layout.id.clone(), layout.clone());

        info!("Created dashboard layout: {}", layout.name);
        Ok(())
    }

    /// Get dashboard layout
    pub async fn get_layout(&self, layout_id: &str) -> Option<DashboardLayout> {
        let layouts = self.layouts.read().await;
        layouts.get(layout_id).cloned()
    }

    /// Update dashboard data
    pub async fn update_data(&self) -> NetworkResult<()> {
        let start_time = Instant::now();

        let data = self.collect_dashboard_data().await?;

        {
            let mut cache = self.data_cache.write().await;
            *cache = data.clone();
        }

        {
            let mut last_update = self.last_update.lock().unwrap();
            *last_update = Instant::now();
        }

        // Broadcast update if real-time is enabled
        if self.config.enable_real_time {
            let update = DashboardUpdate {
                update_type: UpdateType::MetricUpdate,
                timestamp: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
                data: serde_json::to_value(data).unwrap_or_default(),
                target_widgets: None,
            };

            let _ = self.data_stream_tx.send(update);
        }

        // Update performance metrics
        {
            let mut metrics = self.dashboard_metrics.lock().unwrap();
            metrics.data_queries += 1;
            let response_time = start_time.elapsed().as_millis() as f64;
            metrics.avg_response_time_ms = (metrics.avg_response_time_ms + response_time) / 2.0;
        }

        Ok(())
    }

    /// Get cached dashboard data
    pub async fn get_data(&self) -> DashboardData {
        let cache = self.data_cache.read().await;
        cache.clone()
    }

    /// Subscribe to real-time updates
    pub fn subscribe_to_updates(&self) -> broadcast::Receiver<DashboardUpdate> {
        self.data_stream_tx.subscribe()
    }

    /// Create new dashboard session
    pub async fn create_session(&self, user_id: Option<String>) -> NetworkResult<String> {
        let session_id = Uuid::new_v4().to_string();
        let session = DashboardSession {
            session_id: session_id.clone(),
            user_id,
            connected_at: Instant::now(),
            last_activity: Instant::now(),
            active_layout: "default".to_string(),
            subscribed_widgets: Vec::new(),
        };

        {
            let mut sessions = self.active_sessions.write().await;
            sessions.insert(session_id.clone(), session);
        }

        {
            let mut metrics = self.dashboard_metrics.lock().unwrap();
            metrics.active_sessions += 1;
        }

        info!("Created dashboard session: {}", session_id);
        Ok(session_id)
    }

    /// Update session activity
    pub async fn update_session_activity(&self, session_id: &str) -> NetworkResult<()> {
        let mut sessions = self.active_sessions.write().await;
        if let Some(session) = sessions.get_mut(session_id) {
            session.last_activity = Instant::now();
            Ok(())
        } else {
            Err(NetworkError::NotFound("Session not found".to_string()))
        }
    }

    /// Get dashboard performance metrics
    pub fn get_dashboard_metrics(&self) -> DashboardMetrics {
        let metrics = self.dashboard_metrics.lock().unwrap();
        metrics.clone()
    }

    /// Export dashboard configuration
    pub async fn export_configuration(&self) -> NetworkResult<String> {
        let layouts = self.layouts.read().await;
        let config_data = DashboardExport {
            layouts: layouts.values().cloned().collect(),
            config: self.config.clone(),
            exported_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
        };

        serde_json::to_string_pretty(&config_data)
            .map_err(|e| NetworkError::Serialization(e.to_string()))
    }

    /// Import dashboard configuration
    pub async fn import_configuration(&self, config_json: &str) -> NetworkResult<()> {
        let config_data: DashboardExport = serde_json::from_str(config_json)
            .map_err(|e| NetworkError::Serialization(e.to_string()))?;

        let mut layouts = self.layouts.write().await;
        for layout in config_data.layouts {
            layouts.insert(layout.id.clone(), layout);
        }

        info!("Imported {} dashboard layouts", layouts.len());
        Ok(())
    }

    // Private helper methods

    async fn create_default_layouts(&self) -> NetworkResult<()> {
        // Create overview layout
        let overview_layout = DashboardLayout {
            id: "overview".to_string(),
            name: "System Overview".to_string(),
            description: "High-level system overview dashboard".to_string(),
            widgets: self.create_overview_widgets(),
            layout_type: LayoutType::Grid,
            created_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            updated_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            created_by: "system".to_string(),
            tags: vec!["default".to_string(), "overview".to_string()],
            is_default: true,
        };

        // Create performance layout
        let performance_layout = DashboardLayout {
            id: "performance".to_string(),
            name: "Performance Analytics".to_string(),
            description: "Detailed performance monitoring dashboard".to_string(),
            widgets: self.create_performance_widgets(),
            layout_type: LayoutType::Grid,
            created_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            updated_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            created_by: "system".to_string(),
            tags: vec!["default".to_string(), "performance".to_string()],
            is_default: false,
        };

        // Create troubleshooting layout
        let troubleshooting_layout = DashboardLayout {
            id: "troubleshooting".to_string(),
            name: "Troubleshooting".to_string(),
            description: "Error analysis and troubleshooting dashboard".to_string(),
            widgets: self.create_troubleshooting_widgets(),
            layout_type: LayoutType::Grid,
            created_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            updated_at: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
            created_by: "system".to_string(),
            tags: vec!["default".to_string(), "troubleshooting".to_string()],
            is_default: false,
        };

        self.create_layout(overview_layout).await?;
        self.create_layout(performance_layout).await?;
        self.create_layout(troubleshooting_layout).await?;

        Ok(())
    }

    fn create_overview_widgets(&self) -> Vec<DashboardWidget> {
        vec![
            DashboardWidget {
                id: "system_health".to_string(),
                widget_type: WidgetType::HealthStatus,
                title: "System Health".to_string(),
                position: WidgetPosition { x: 0, y: 0, row: 0, col: 0 },
                size: WidgetSize { width: 6, height: 4, min_width: Some(4), min_height: Some(3) },
                config: WidgetConfig {
                    time_range: TimeRange::LastHour,
                    filters: HashMap::new(),
                    aggregation: None,
                    threshold_alerts: Vec::new(),
                    visualization_type: VisualizationType::SingleStat,
                    color_scheme: ColorScheme::Default,
                },
                refresh_interval: Some(Duration::from_secs(30)),
                data_source: DataSource::System,
            },
            DashboardWidget {
                id: "active_alerts".to_string(),
                widget_type: WidgetType::AlertList,
                title: "Active Alerts".to_string(),
                position: WidgetPosition { x: 6, y: 0, row: 0, col: 1 },
                size: WidgetSize { width: 6, height: 4, min_width: Some(4), min_height: Some(3) },
                config: WidgetConfig {
                    time_range: TimeRange::LastHour,
                    filters: HashMap::new(),
                    aggregation: None,
                    threshold_alerts: Vec::new(),
                    visualization_type: VisualizationType::Table,
                    color_scheme: ColorScheme::Default,
                },
                refresh_interval: Some(Duration::from_secs(10)),
                data_source: DataSource::Alerts,
            },
        ]
    }

    fn create_performance_widgets(&self) -> Vec<DashboardWidget> {
        vec![
            DashboardWidget {
                id: "throughput_chart".to_string(),
                widget_type: WidgetType::ThroughputChart,
                title: "System Throughput".to_string(),
                position: WidgetPosition { x: 0, y: 0, row: 0, col: 0 },
                size: WidgetSize { width: 12, height: 6, min_width: Some(8), min_height: Some(4) },
                config: WidgetConfig {
                    time_range: TimeRange::LastHour,
                    filters: HashMap::new(),
                    aggregation: Some(AggregationType::Rate),
                    threshold_alerts: Vec::new(),
                    visualization_type: VisualizationType::LineChart,
                    color_scheme: ColorScheme::Default,
                },
                refresh_interval: Some(Duration::from_secs(15)),
                data_source: DataSource::Metrics,
            },
        ]
    }

    fn create_troubleshooting_widgets(&self) -> Vec<DashboardWidget> {
        vec![
            DashboardWidget {
                id: "error_logs".to_string(),
                widget_type: WidgetType::LogViewer,
                title: "Error Logs".to_string(),
                position: WidgetPosition { x: 0, y: 0, row: 0, col: 0 },
                size: WidgetSize { width: 12, height: 8, min_width: Some(8), min_height: Some(6) },
                config: WidgetConfig {
                    time_range: TimeRange::LastHour,
                    filters: [("level".to_string(), "error".to_string())].into_iter().collect(),
                    aggregation: None,
                    threshold_alerts: Vec::new(),
                    visualization_type: VisualizationType::Table,
                    color_scheme: ColorScheme::Default,
                },
                refresh_interval: Some(Duration::from_secs(5)),
                data_source: DataSource::Logs,
            },
        ]
    }

    async fn collect_dashboard_data(&self) -> NetworkResult<DashboardData> {
        let metrics = self.collect_metrics_data().await?;
        let logs = self.collect_logs_data().await?;
        let alerts = self.collect_alerts_data().await?;
        let traces = self.collect_traces_data().await?;
        let system_health = self.collect_system_health().await?;
        let node_status = self.collect_node_status().await?;
        let service_topology = self.collect_service_topology().await?;
        let performance_summary = self.collect_performance_summary().await?;
        let error_analysis = self.collect_error_analysis().await?;

        Ok(DashboardData {
            metrics,
            logs,
            alerts,
            traces,
            system_health,
            node_status,
            service_topology,
            performance_summary,
            error_analysis,
        })
    }

    async fn collect_metrics_data(&self) -> NetworkResult<HashMap<String, TimeSeries>> {
        let mut metrics = HashMap::new();

        // Get metrics from collector
        let collector_metrics = self.metrics_collector.get_all_metrics().await;
        for (name, values) in collector_metrics {
            let points: Vec<DataPoint> = values.into_iter().map(|(timestamp, value)| {
                DataPoint {
                    timestamp,
                    value,
                    labels: HashMap::new(),
                    metadata: None,
                }
            }).collect();

            metrics.insert(name.clone(), TimeSeries {
                name,
                points,
                unit: None,
                aggregation: None,
                tags: HashMap::new(),
            });
        }

        Ok(metrics)
    }

    async fn collect_logs_data(&self) -> NetworkResult<Vec<LogEntry>> {
        if let Some(ref logging_system) = self.logging_system {
            use crate::monitoring::centralized_logging::{LogQueryCriteria, SortOrder};
            let criteria = LogQueryCriteria {
                level: None,
                min_level: None,
                component: None,
                source_node: None,
                trace_id: None,
                correlation_id: None,
                user_id: None,
                start_time: Some(
                    SystemTime::now()
                        .duration_since(UNIX_EPOCH)
                        .unwrap()
                        .as_secs() - 3600
                ),
                end_time: None,
                text_search: None,
                tags: Vec::new(),
                limit: Some(100),
                offset: None,
                sort_order: SortOrder::TimestampDesc,
            };

            let log_entries = logging_system.query_logs(criteria).await?;
            let dashboard_logs: Vec<LogEntry> = log_entries.into_iter().map(|entry| {
                LogEntry {
                    timestamp: entry.timestamp,
                    level: format!("{:?}", entry.level),
                    component: entry.component,
                    message: entry.message,
                    node_id: entry.source_node,
                    trace_id: entry.trace_id,
                    correlation_id: entry.correlation_id,
                    tags: entry.tags,
                }
            }).collect();

            Ok(dashboard_logs)
        } else {
            Ok(Vec::new())
        }
    }

    async fn collect_alerts_data(&self) -> NetworkResult<Vec<AlertSummary>> {
        let active_alerts = self.alert_manager.get_active_alerts().await;
        let alert_summaries: Vec<AlertSummary> = active_alerts.into_iter().map(|alert| {
            AlertSummary {
                id: alert.id,
                rule_name: alert.rule_name,
                severity: format!("{:?}", alert.severity),
                state: format!("{:?}", alert.state),
                message: alert.message,
                started_at: alert.started_at,
                node_id: alert.node_id,
                service: alert.annotations.get("service").cloned(),
                component: alert.annotations.get("component").cloned(),
            }
        }).collect();

        Ok(alert_summaries)
    }

    async fn collect_traces_data(&self) -> NetworkResult<Vec<TraceSummary>> {
        if let Some(ref tracing_system) = self.tracing_system {
            use crate::monitoring::enhanced_tracing::{TraceQuery, TraceSortBy};
            let query = TraceQuery {
                service_name: None,
                operation_name: None,
                min_duration_micros: None,
                max_duration_micros: None,
                start_time: Some(
                    SystemTime::now()
                        .duration_since(UNIX_EPOCH)
                        .unwrap()
                        .as_secs() - 3600
                ),
                end_time: None,
                has_error: None,
                tags: HashMap::new(),
                limit: Some(50),
                sort_by: TraceSortBy::StartTime,
            };

            let traces = tracing_system.query_traces(query).await?;
            let trace_summaries: Vec<TraceSummary> = traces.into_iter().map(|trace| {
                TraceSummary {
                    trace_id: trace.trace_id,
                    operation_name: trace.root_operation,
                    duration_micros: trace.duration_micros,
                    span_count: trace.spans.len(),
                    error_count: trace.error_count,
                    service_count: trace.service_count,
                    start_time: trace.start_time,
                    end_time: trace.end_time,
                    services: trace.spans.iter().map(|s| s.service_name.clone()).collect::<std::collections::HashSet<_>>().into_iter().collect(),
                    critical_path_duration: trace.critical_path.len() as u64 * 1000, // Placeholder
                }
            }).collect();

            Ok(trace_summaries)
        } else {
            Ok(Vec::new())
        }
    }

    async fn collect_system_health(&self) -> NetworkResult<SystemHealth> {
        // Collect overall system health
        Ok(SystemHealth {
            overall_health: HealthStatus::Healthy,
            service_health: HashMap::new(),
            node_health: HashMap::new(),
            active_alerts: 0,
            critical_alerts: 0,
            uptime_seconds: 86400, // Placeholder
            last_updated: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
        })
    }

    async fn collect_node_status(&self) -> NetworkResult<HashMap<String, NodeStatus>> {
        // Collect node status information
        Ok(HashMap::new())
    }

    async fn collect_service_topology(&self) -> NetworkResult<ServiceTopology> {
        // Collect service topology
        Ok(ServiceTopology {
            services: HashMap::new(),
            dependencies: Vec::new(),
            traffic_flow: Vec::new(),
            last_updated: SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs(),
        })
    }

    async fn collect_performance_summary(&self) -> NetworkResult<PerformanceSummary> {
        // Collect performance summary
        Ok(PerformanceSummary {
            overall_throughput: 0.0,
            avg_response_time: 0,
            error_rate: 0.0,
            cpu_utilization: 0.0,
            memory_utilization: 0.0,
            network_utilization: 0.0,
            top_slow_operations: Vec::new(),
            resource_bottlenecks: Vec::new(),
        })
    }

    async fn collect_error_analysis(&self) -> NetworkResult<ErrorAnalysis> {
        // Collect error analysis
        Ok(ErrorAnalysis {
            total_errors: 0,
            error_rate: 0.0,
            errors_by_service: HashMap::new(),
            errors_by_type: HashMap::new(),
            error_trends: Vec::new(),
            top_errors: Vec::new(),
        })
    }

    async fn start_data_collection_task(&self) {
        let refresh_interval = Duration::from_secs(self.config.refresh_interval_seconds);
        let dashboard = self.clone();

        tokio::spawn(async move {
            let mut interval = interval(refresh_interval);
            loop {
                interval.tick().await;

                if let Err(e) = dashboard.update_data().await {
                    error!("Failed to update dashboard data: {}", e);
                }
            }
        });
    }

    async fn start_real_time_streaming(&self) {
        info!("Started real-time dashboard streaming");
    }

    async fn start_session_management(&self) {
        let active_sessions = self.active_sessions.clone();
        let dashboard_metrics = self.dashboard_metrics.clone();

        tokio::spawn(async move {
            let mut interval = interval(Duration::from_secs(60));
            loop {
                interval.tick().await;

                // Clean up expired sessions
                let mut sessions = active_sessions.write().await;
                let now = Instant::now();
                let session_timeout = Duration::from_secs(1800); // 30 minutes

                let expired_sessions: Vec<String> = sessions.iter()
                    .filter(|(_, session)| now.duration_since(session.last_activity) > session_timeout)
                    .map(|(id, _)| id.clone())
                    .collect();

                for session_id in expired_sessions {
                    sessions.remove(&session_id);
                    info!("Expired dashboard session: {}", session_id);
                }

                // Update metrics
                {
                    let mut metrics = dashboard_metrics.lock().unwrap();
                    metrics.active_sessions = sessions.len() as u64;
                }

                debug!("Session cleanup completed, active sessions: {}", sessions.len());
            }
        });
    }

    async fn start_performance_monitoring(&self) {
        info!("Started dashboard performance monitoring");
    }
}

// Additional helper types

impl Default for DashboardData {
    fn default() -> Self {
        Self {
            metrics: HashMap::new(),
            logs: Vec::new(),
            alerts: Vec::new(),
            traces: Vec::new(),
            system_health: SystemHealth {
                overall_health: HealthStatus::Unknown,
                service_health: HashMap::new(),
                node_health: HashMap::new(),
                active_alerts: 0,
                critical_alerts: 0,
                uptime_seconds: 0,
                last_updated: 0,
            },
            node_status: HashMap::new(),
            service_topology: ServiceTopology {
                services: HashMap::new(),
                dependencies: Vec::new(),
                traffic_flow: Vec::new(),
                last_updated: 0,
            },
            performance_summary: PerformanceSummary {
                overall_throughput: 0.0,
                avg_response_time: 0,
                error_rate: 0.0,
                cpu_utilization: 0.0,
                memory_utilization: 0.0,
                network_utilization: 0.0,
                top_slow_operations: Vec::new(),
                resource_bottlenecks: Vec::new(),
            },
            error_analysis: ErrorAnalysis {
                total_errors: 0,
                error_rate: 0.0,
                errors_by_service: HashMap::new(),
                errors_by_type: HashMap::new(),
                error_trends: Vec::new(),
                top_errors: Vec::new(),
            },
        }
    }
}

/// Dashboard export/import structure
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DashboardExport {
    pub layouts: Vec<DashboardLayout>,
    pub config: EnhancedDashboardConfig,
    pub exported_at: u64,
}

impl Clone for EnhancedDashboard {
    fn clone(&self) -> Self {
        Self {
            config: self.config.clone(),
            node_id: self.node_id.clone(),
            logging_system: self.logging_system.clone(),
            tracing_system: self.tracing_system.clone(),
            alert_manager: self.alert_manager.clone(),
            metrics_collector: self.metrics_collector.clone(),
            layouts: self.layouts.clone(),
            active_sessions: self.active_sessions.clone(),
            data_stream_tx: self.data_stream_tx.clone(),
            data_cache: self.data_cache.clone(),
            last_update: self.last_update.clone(),
            dashboard_metrics: self.dashboard_metrics.clone(),
        }
    }
}
