// Package slurp provides contextual intelligence capabilities for BZZZ.
//
// SLURP (Storage, Logic, Understanding, Retrieval, Processing) implements:
// - Hierarchical context resolution with bounded depth traversal
// - Decision-hop temporal analysis for tracking conceptual evolution
// - Distributed storage with role-based encryption
// - Context generation restricted to elected admin nodes
// - Real-time context evolution tracking and validation
//
// Architecture:
//   - context/     Hierarchical context resolution and caching
//   - temporal/    Decision-based temporal evolution tracking
//   - storage/     Distributed encrypted storage layer
//   - intelligence/ Context generation and analysis (admin-only)
//   - retrieval/   Context search and query interfaces
//
// Integration Points:
//   - pkg/dht      Distributed hash table for context storage
//   - pkg/crypto   Role-based encryption for access control
//   - pkg/election Admin-only operations coordination
//   - pkg/config   Configuration extension for SLURP settings
//
// This package follows established BZZZ patterns for interfaces, error handling,
// and distributed operations while providing native Go implementations of the
// contextual intelligence capabilities originally prototyped in Python.
package slurp

import (
	"context"
	"fmt"
	"sync"
	"time"

	"chorus.services/bzzz/pkg/config"
	"chorus.services/bzzz/pkg/crypto"
	"chorus.services/bzzz/pkg/dht"
	"chorus.services/bzzz/pkg/election"
)

// SLURP is the main coordinator for contextual intelligence operations.
//
// It orchestrates the interaction between context resolution, temporal analysis,
// distributed storage, and intelligence generation while enforcing security
// and access controls through integration with existing BZZZ systems.
//
// Thread Safety: SLURP is safe for concurrent use across multiple goroutines.
// All public methods handle synchronization internally.
type SLURP struct {
	// Configuration and dependencies
	config   *config.Config
	dht      dht.DHT
	crypto   *crypto.AgeCrypto
	election *election.ElectionManager
	
	// Core components
	contextResolver   ContextResolver
	temporalGraph     TemporalGraph
	storage          DistributedStorage
	intelligence     ContextGenerator
	retrieval        QueryEngine
	
	// State management
	mu               sync.RWMutex
	initialized      bool
	adminMode        bool
	currentAdmin     string
	
	// Background processing
	ctx              context.Context
	cancel           context.CancelFunc
	backgroundTasks  sync.WaitGroup
	
	// Performance monitoring
	metrics          *SLURPMetrics
	
	// Event handling
	eventHandlers    map[EventType][]EventHandler
	eventMux         sync.RWMutex
}

// SLURPConfig holds SLURP-specific configuration that extends the main BZZZ config
type SLURPConfig struct {
	// Enable/disable SLURP system
	Enabled bool `yaml:"enabled" json:"enabled"`
	
	// Context resolution settings
	ContextResolution ContextResolutionConfig `yaml:"context_resolution" json:"context_resolution"`
	
	// Temporal analysis settings
	TemporalAnalysis TemporalAnalysisConfig `yaml:"temporal_analysis" json:"temporal_analysis"`
	
	// Storage configuration
	Storage SLURPStorageConfig `yaml:"storage" json:"storage"`
	
	// Intelligence/generation settings
	Intelligence IntelligenceConfig `yaml:"intelligence" json:"intelligence"`
	
	// Performance tuning
	Performance PerformanceConfig `yaml:"performance" json:"performance"`
	
	// Security settings
	Security SLURPSecurityConfig `yaml:"security" json:"security"`
}

// ContextResolutionConfig configures hierarchical context resolution
type ContextResolutionConfig struct {
	// Bounded traversal settings
	MaxHierarchyDepth     int           `yaml:"max_hierarchy_depth" json:"max_hierarchy_depth"`
	DefaultDepthLimit     int           `yaml:"default_depth_limit" json:"default_depth_limit"`
	
	// Caching configuration
	CacheTTL              time.Duration `yaml:"cache_ttl" json:"cache_ttl"`
	CacheMaxSize          int64         `yaml:"cache_max_size" json:"cache_max_size"`
	CacheMaxEntries       int           `yaml:"cache_max_entries" json:"cache_max_entries"`
	
	// Resolution behavior
	RequireStrictMatching bool          `yaml:"require_strict_matching" json:"require_strict_matching"`
	AllowPartialResolution bool         `yaml:"allow_partial_resolution" json:"allow_partial_resolution"`
	MinConfidenceThreshold float64      `yaml:"min_confidence_threshold" json:"min_confidence_threshold"`
	
	// Global context settings
	EnableGlobalContexts  bool          `yaml:"enable_global_contexts" json:"enable_global_contexts"`
	GlobalContextTTL      time.Duration `yaml:"global_context_ttl" json:"global_context_ttl"`
}

// TemporalAnalysisConfig configures decision-based temporal evolution tracking
type TemporalAnalysisConfig struct {
	// Decision hop analysis
	MaxDecisionHops       int           `yaml:"max_decision_hops" json:"max_decision_hops"`
	DefaultHopLimit       int           `yaml:"default_hop_limit" json:"default_hop_limit"`
	
	// Temporal navigation
	EnableNavigation      bool          `yaml:"enable_navigation" json:"enable_navigation"`
	MaxNavigationHistory  int           `yaml:"max_navigation_history" json:"max_navigation_history"`
	
	// Staleness detection
	StalenessThreshold    float64       `yaml:"staleness_threshold" json:"staleness_threshold"`
	StalenessCheckInterval time.Duration `yaml:"staleness_check_interval" json:"staleness_check_interval"`
	
	// Decision analysis
	MinDecisionConfidence float64       `yaml:"min_decision_confidence" json:"min_decision_confidence"`
	MaxDecisionAge        time.Duration `yaml:"max_decision_age" json:"max_decision_age"`
	
	// Influence propagation
	EnableInfluencePropagation bool     `yaml:"enable_influence_propagation" json:"enable_influence_propagation"`
	MaxInfluenceDepth         int       `yaml:"max_influence_depth" json:"max_influence_depth"`
}

// SLURPStorageConfig configures distributed storage behavior
type SLURPStorageConfig struct {
	// Storage backend
	Backend               string        `yaml:"backend" json:"backend"` // "dht", "hybrid"
	
	// Encryption settings
	DefaultEncryption     bool          `yaml:"default_encryption" json:"default_encryption"`
	EncryptionRoles       []string      `yaml:"encryption_roles" json:"encryption_roles"`
	
	// Persistence
	LocalCacheEnabled     bool          `yaml:"local_cache_enabled" json:"local_cache_enabled"`
	LocalCachePath        string        `yaml:"local_cache_path" json:"local_cache_path"`
	LocalCacheMaxSize     int64         `yaml:"local_cache_max_size" json:"local_cache_max_size"`
	
	// Synchronization
	SyncInterval          time.Duration `yaml:"sync_interval" json:"sync_interval"`
	SyncTimeout           time.Duration `yaml:"sync_timeout" json:"sync_timeout"`
	ConflictResolution    string        `yaml:"conflict_resolution" json:"conflict_resolution"`
	
	// Replication
	ReplicationFactor     int           `yaml:"replication_factor" json:"replication_factor"`
	ConsistencyLevel      string        `yaml:"consistency_level" json:"consistency_level"`
}

// IntelligenceConfig configures context generation and analysis
type IntelligenceConfig struct {
	// Generation settings (admin-only)
	EnableGeneration      bool          `yaml:"enable_generation" json:"enable_generation"`
	GenerationTimeout     time.Duration `yaml:"generation_timeout" json:"generation_timeout"`
	GenerationConcurrency int           `yaml:"generation_concurrency" json:"generation_concurrency"`
	
	// Analysis settings
	EnableAnalysis        bool          `yaml:"enable_analysis" json:"enable_analysis"`
	AnalysisInterval      time.Duration `yaml:"analysis_interval" json:"analysis_interval"`
	
	// Pattern detection
	EnablePatternDetection bool         `yaml:"enable_pattern_detection" json:"enable_pattern_detection"`
	PatternMatchThreshold float64       `yaml:"pattern_match_threshold" json:"pattern_match_threshold"`
	
	// Quality metrics
	QualityThreshold      float64       `yaml:"quality_threshold" json:"quality_threshold"`
	EnableQualityMetrics  bool          `yaml:"enable_quality_metrics" json:"enable_quality_metrics"`
	
	// External integrations
	RAGEndpoint           string        `yaml:"rag_endpoint" json:"rag_endpoint"`
	RAGTimeout            time.Duration `yaml:"rag_timeout" json:"rag_timeout"`
}

// PerformanceConfig configures performance optimization settings
type PerformanceConfig struct {
	// Concurrency limits
	MaxConcurrentResolutions  int           `yaml:"max_concurrent_resolutions" json:"max_concurrent_resolutions"`
	MaxConcurrentGenerations  int           `yaml:"max_concurrent_generations" json:"max_concurrent_generations"`
	MaxConcurrentQueries      int           `yaml:"max_concurrent_queries" json:"max_concurrent_queries"`
	
	// Timeout settings
	DefaultRequestTimeout     time.Duration `yaml:"default_request_timeout" json:"default_request_timeout"`
	BackgroundTaskTimeout     time.Duration `yaml:"background_task_timeout" json:"background_task_timeout"`
	HealthCheckTimeout        time.Duration `yaml:"health_check_timeout" json:"health_check_timeout"`
	
	// Resource limits
	MaxMemoryUsage            int64         `yaml:"max_memory_usage" json:"max_memory_usage"`
	MaxDiskUsage              int64         `yaml:"max_disk_usage" json:"max_disk_usage"`
	
	// Batch processing
	DefaultBatchSize          int           `yaml:"default_batch_size" json:"default_batch_size"`
	MaxBatchSize              int           `yaml:"max_batch_size" json:"max_batch_size"`
	BatchTimeout              time.Duration `yaml:"batch_timeout" json:"batch_timeout"`
	
	// Monitoring
	EnableMetrics             bool          `yaml:"enable_metrics" json:"enable_metrics"`
	MetricsCollectionInterval time.Duration `yaml:"metrics_collection_interval" json:"metrics_collection_interval"`
}

// SLURPSecurityConfig configures security-specific settings
type SLURPSecurityConfig struct {
	// Access control
	EnforceRoleBasedAccess    bool     `yaml:"enforce_role_based_access" json:"enforce_role_based_access"`
	DefaultAccessRoles        []string `yaml:"default_access_roles" json:"default_access_roles"`
	AdminOnlyOperations       []string `yaml:"admin_only_operations" json:"admin_only_operations"`
	
	// Audit and logging
	EnableAuditLog            bool     `yaml:"enable_audit_log" json:"enable_audit_log"`
	AuditLogPath              string   `yaml:"audit_log_path" json:"audit_log_path"`
	LogSensitiveOperations    bool     `yaml:"log_sensitive_operations" json:"log_sensitive_operations"`
	
	// Encryption
	RequireEncryption         bool     `yaml:"require_encryption" json:"require_encryption"`
	EncryptionAlgorithm       string   `yaml:"encryption_algorithm" json:"encryption_algorithm"`
	KeyRotationInterval       time.Duration `yaml:"key_rotation_interval" json:"key_rotation_interval"`
	
	// Rate limiting
	EnableRateLimiting        bool     `yaml:"enable_rate_limiting" json:"enable_rate_limiting"`
	DefaultRateLimit          int      `yaml:"default_rate_limit" json:"default_rate_limit"`
	BurstLimit                int      `yaml:"burst_limit" json:"burst_limit"`
}

// SLURPMetrics holds performance and operational metrics
type SLURPMetrics struct {
	// Resolution metrics
	TotalResolutions       int64         `json:"total_resolutions"`
	SuccessfulResolutions  int64         `json:"successful_resolutions"`
	FailedResolutions      int64         `json:"failed_resolutions"`
	AverageResolutionTime  time.Duration `json:"average_resolution_time"`
	CacheHitRate           float64       `json:"cache_hit_rate"`
	
	// Temporal metrics
	TemporalNodes          int64         `json:"temporal_nodes"`
	DecisionPaths          int64         `json:"decision_paths"`
	InfluenceRelationships int64         `json:"influence_relationships"`
	StaleContexts          int64         `json:"stale_contexts"`
	
	// Storage metrics
	StoredContexts         int64         `json:"stored_contexts"`
	EncryptedContexts      int64         `json:"encrypted_contexts"`
	StorageUtilization     float64       `json:"storage_utilization"`
	SyncOperations         int64         `json:"sync_operations"`
	
	// Intelligence metrics
	GenerationRequests     int64         `json:"generation_requests"`
	SuccessfulGenerations  int64         `json:"successful_generations"`
	AnalysisOperations     int64         `json:"analysis_operations"`
	PatternMatches         int64         `json:"pattern_matches"`
	
	// Performance metrics
	ActiveConnections      int64         `json:"active_connections"`
	MemoryUsage            int64         `json:"memory_usage"`
	DiskUsage              int64         `json:"disk_usage"`
	
	// Error metrics
	AuthenticationErrors   int64         `json:"authentication_errors"`
	AuthorizationErrors    int64         `json:"authorization_errors"`
	TimeoutErrors          int64         `json:"timeout_errors"`
	
	// Timestamp
	LastUpdated            time.Time     `json:"last_updated"`
}

// EventType represents different types of SLURP events
type EventType string

const (
	EventContextResolved     EventType = "context_resolved"
	EventContextGenerated    EventType = "context_generated"
	EventContextEvolved      EventType = "context_evolved"
	EventDecisionRecorded    EventType = "decision_recorded"
	EventInfluenceAdded      EventType = "influence_added"
	EventAdminChanged        EventType = "admin_changed"
	EventStalenessDetected   EventType = "staleness_detected"
	EventCacheInvalidated    EventType = "cache_invalidated"
	EventStorageSynced       EventType = "storage_synced"
	EventPatternDetected     EventType = "pattern_detected"
	EventErrorOccurred       EventType = "error_occurred"
)

// EventHandler defines the interface for handling SLURP events
type EventHandler func(ctx context.Context, event *SLURPEvent) error

// SLURPEvent represents an event within the SLURP system
type SLURPEvent struct {
	Type      EventType              `json:"type"`
	Timestamp time.Time              `json:"timestamp"`
	Source    string                 `json:"source"`
	Data      map[string]interface{} `json:"data"`
	Context   map[string]string      `json:"context,omitempty"`
}

// NewSLURP creates a new SLURP instance with the provided dependencies.
//
// The SLURP system requires integration with existing BZZZ components:
// - config: Main BZZZ configuration including SLURP settings
// - dhtInstance: Distributed hash table for storage and discovery
// - cryptoInstance: Role-based encryption for access control
// - electionManager: Admin election coordination for restricted operations
//
// Returns an initialized but not yet started SLURP instance.
func NewSLURP(
	config *config.Config,
	dhtInstance dht.DHT,
	cryptoInstance *crypto.AgeCrypto,
	electionManager *election.ElectionManager,
) (*SLURP, error) {
	if config == nil {
		return nil, fmt.Errorf("config is required")
	}
	if dhtInstance == nil {
		return nil, fmt.Errorf("DHT instance is required")
	}
	if cryptoInstance == nil {
		return nil, fmt.Errorf("crypto instance is required")
	}
	if electionManager == nil {
		return nil, fmt.Errorf("election manager is required")
	}
	
	// Validate SLURP configuration
	if err := validateSLURPConfig(&config.Slurp); err != nil {
		return nil, fmt.Errorf("invalid SLURP configuration: %w", err)
	}
	
	ctx, cancel := context.WithCancel(context.Background())
	
	slurp := &SLURP{
		config:        config,
		dht:          dhtInstance,
		crypto:       cryptoInstance,
		election:     electionManager,
		ctx:          ctx,
		cancel:       cancel,
		metrics:      &SLURPMetrics{LastUpdated: time.Now()},
		eventHandlers: make(map[EventType][]EventHandler),
	}
	
	return slurp, nil
}

// Initialize initializes all SLURP components and prepares for operation.
//
// This method must be called before using any SLURP functionality.
// It sets up the context resolver, temporal graph, storage layer,
// intelligence system, and retrieval engine.
//
// The initialization process includes:
// - Loading existing context hierarchies from storage
// - Setting up encryption keys and access controls
// - Initializing caches and performance optimizations
// - Starting background maintenance tasks
//
// Returns an error if initialization fails.
func (s *SLURP) Initialize(ctx context.Context) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	
	if s.initialized {
		return fmt.Errorf("SLURP already initialized")
	}
	
	// Check if SLURP is enabled
	if !s.config.Slurp.Enabled {
		return fmt.Errorf("SLURP is disabled in configuration")
	}
	
	// TODO: Initialize components in dependency order
	// 1. Initialize storage layer first
	// 2. Initialize context resolver with storage
	// 3. Initialize temporal graph with storage
	// 4. Initialize intelligence with resolver and temporal
	// 5. Initialize retrieval with all components
	// 6. Set up event handlers and background tasks
	
	// Set admin status based on current election state
	s.updateAdminStatus()
	
	// Set up election event handlers
	if err := s.setupElectionHandlers(); err != nil {
		return fmt.Errorf("failed to setup election handlers: %w", err)
	}
	
	// Start background tasks
	s.startBackgroundTasks()
	
	s.initialized = true
	
	// Emit initialization event
	s.emitEvent(EventContextResolved, map[string]interface{}{
		"action": "system_initialized",
		"admin_mode": s.adminMode,
		"current_admin": s.currentAdmin,
	})
	
	return nil
}

// Resolve resolves context for a UCXL address using hierarchical inheritance.
//
// This is the primary method for context resolution, implementing bounded
// hierarchy traversal with caching and role-based access control.
//
// Parameters:
//   ctx: Request context for cancellation and timeouts
//   ucxlAddress: The UCXL address to resolve context for
//
// Returns:
//   *ResolvedContext: Complete resolved context with metadata
//   error: Any error during resolution
//
// The resolution process:
// 1. Validates the UCXL address format
// 2. Checks cache for existing resolution
// 3. Performs bounded hierarchy traversal
// 4. Applies global contexts if enabled
// 5. Encrypts result based on current role permissions
// 6. Caches the result for future requests
func (s *SLURP) Resolve(ctx context.Context, ucxlAddress string) (*ResolvedContext, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	// TODO: Implement context resolution
	// This would delegate to the contextResolver component
	
	return nil, fmt.Errorf("not implemented")
}

// ResolveWithDepth resolves context with a specific depth limit.
//
// This method provides fine-grained control over the hierarchy traversal
// depth, allowing callers to optimize performance for specific use cases.
func (s *SLURP) ResolveWithDepth(ctx context.Context, ucxlAddress string, maxDepth int) (*ResolvedContext, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	if maxDepth < 0 {
		return nil, fmt.Errorf("maxDepth cannot be negative")
	}
	
	// TODO: Implement depth-limited resolution
	
	return nil, fmt.Errorf("not implemented")
}

// BatchResolve efficiently resolves multiple UCXL addresses in parallel.
//
// This method is optimized for bulk resolution operations with request
// deduplication, shared caching, and controlled concurrency.
func (s *SLURP) BatchResolve(ctx context.Context, addresses []string) (map[string]*ResolvedContext, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	if len(addresses) == 0 {
		return make(map[string]*ResolvedContext), nil
	}
	
	// TODO: Implement batch resolution with concurrency control
	
	return nil, fmt.Errorf("not implemented")
}

// GetTemporalEvolution retrieves the temporal evolution history for a context.
//
// This method provides access to decision-based evolution tracking,
// showing how context has changed through different decision points.
func (s *SLURP) GetTemporalEvolution(ctx context.Context, ucxlAddress string) ([]*TemporalNode, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	// TODO: Delegate to temporal graph component
	
	return nil, fmt.Errorf("not implemented")
}

// NavigateDecisionHops navigates through the decision graph by hop distance.
//
// This method implements decision-hop based navigation rather than
// chronological time-based navigation, allowing exploration of
// conceptually related changes.
func (s *SLURP) NavigateDecisionHops(ctx context.Context, ucxlAddress string, hops int, direction NavigationDirection) (*TemporalNode, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	// TODO: Implement decision-hop navigation
	
	return nil, fmt.Errorf("not implemented")
}

// GenerateContext generates new context for a path (admin-only operation).
//
// This method is restricted to admin nodes and provides intelligent
// context generation using analysis of file content, structure, and
// existing patterns.
func (s *SLURP) GenerateContext(ctx context.Context, path string, options *GenerationOptions) (*ContextNode, error) {
	if !s.initialized {
		return nil, fmt.Errorf("SLURP not initialized")
	}
	
	// Enforce admin-only restriction
	if !s.IsCurrentNodeAdmin() {
		return nil, fmt.Errorf("context generation requires admin privileges")
	}
	
	// TODO: Delegate to intelligence component
	
	return nil, fmt.Errorf("not implemented")
}

// IsCurrentNodeAdmin returns true if the current node is the elected admin.
//
// This method is used throughout SLURP to enforce admin-only operations
// such as context generation and hierarchy management.
func (s *SLURP) IsCurrentNodeAdmin() bool {
	s.mu.RLock()
	defer s.mu.RUnlock()
	return s.adminMode
}

// GetMetrics returns current SLURP performance and operational metrics.
func (s *SLURP) GetMetrics() *SLURPMetrics {
	s.mu.RLock()
	defer s.mu.RUnlock()
	
	// Return a copy to prevent modification
	metricsCopy := *s.metrics
	metricsCopy.LastUpdated = time.Now()
	return &metricsCopy
}

// RegisterEventHandler registers an event handler for specific event types.
//
// Event handlers are called asynchronously when events occur and can be
// used for monitoring, logging, and reactive operations.
func (s *SLURP) RegisterEventHandler(eventType EventType, handler EventHandler) {
	s.eventMux.Lock()
	defer s.eventMux.Unlock()
	
	if _, exists := s.eventHandlers[eventType]; !exists {
		s.eventHandlers[eventType] = make([]EventHandler, 0)
	}
	
	s.eventHandlers[eventType] = append(s.eventHandlers[eventType], handler)
}

// Close gracefully shuts down the SLURP system.
//
// This method stops all background tasks, flushes caches, and releases
// resources. It should be called when the BZZZ node is shutting down.
func (s *SLURP) Close() error {
	s.mu.Lock()
	defer s.mu.Unlock()
	
	if !s.initialized {
		return nil
	}
	
	// Cancel context to stop background tasks
	s.cancel()
	
	// Wait for background tasks to complete
	s.backgroundTasks.Wait()
	
	// TODO: Close all components in reverse dependency order
	// 1. Stop retrieval engine
	// 2. Stop intelligence system
	// 3. Flush and close temporal graph
	// 4. Flush and close context resolver
	// 5. Close storage layer
	
	s.initialized = false
	
	return nil
}

// Internal methods

func (s *SLURP) updateAdminStatus() {
	if s.election != nil {
		s.adminMode = s.election.IsCurrentAdmin()
		s.currentAdmin = s.election.GetCurrentAdmin()
	}
}

func (s *SLURP) setupElectionHandlers() error {
	if s.election == nil {
		return nil
	}
	
	// Set up callbacks for admin changes
	s.election.SetCallbacks(
		s.handleAdminChanged,
		s.handleElectionComplete,
	)
	
	return nil
}

func (s *SLURP) handleAdminChanged(oldAdmin, newAdmin string) {
	s.mu.Lock()
	s.currentAdmin = newAdmin
	s.adminMode = (newAdmin == s.config.Agent.ID)
	s.mu.Unlock()
	
	// Emit admin change event
	s.emitEvent(EventAdminChanged, map[string]interface{}{
		"old_admin": oldAdmin,
		"new_admin": newAdmin,
		"is_current_node": s.adminMode,
	})
}

func (s *SLURP) handleElectionComplete(winner string) {
	// Election completion handling if needed
}

func (s *SLURP) startBackgroundTasks() {
	// Start metrics collection
	s.backgroundTasks.Add(1)
	go s.metricsCollectionLoop()
	
	// Start cache maintenance
	s.backgroundTasks.Add(1)
	go s.cacheMaintenance()
	
	// Start staleness detection
	if s.config.Slurp.TemporalAnalysis.StalenessCheckInterval > 0 {
		s.backgroundTasks.Add(1)
		go s.stalenessDetectionLoop()
	}
}

func (s *SLURP) metricsCollectionLoop() {
	defer s.backgroundTasks.Done()
	
	ticker := time.NewTicker(s.config.Slurp.Performance.MetricsCollectionInterval)
	defer ticker.Stop()
	
	for {
		select {
		case <-s.ctx.Done():
			return
		case <-ticker.C:
			s.updateMetrics()
		}
	}
}

func (s *SLURP) cacheMaintenance() {
	defer s.backgroundTasks.Done()
	
	// TODO: Implement cache maintenance loop
	ticker := time.NewTicker(5 * time.Minute)
	defer ticker.Stop()
	
	for {
		select {
		case <-s.ctx.Done():
			return
		case <-ticker.C:
			// Perform cache cleanup, expire old entries, etc.
		}
	}
}

func (s *SLURP) stalenessDetectionLoop() {
	defer s.backgroundTasks.Done()
	
	ticker := time.NewTicker(s.config.Slurp.TemporalAnalysis.StalenessCheckInterval)
	defer ticker.Stop()
	
	for {
		select {
		case <-s.ctx.Done():
			return
		case <-ticker.C:
			s.detectStaleContexts()
		}
	}
}

func (s *SLURP) updateMetrics() {
	s.mu.Lock()
	defer s.mu.Unlock()
	
	// TODO: Collect metrics from all components
	s.metrics.LastUpdated = time.Now()
}

func (s *SLURP) detectStaleContexts() {
	// TODO: Implement staleness detection
	// This would scan temporal nodes for contexts that haven't been
	// updated recently and may be outdated due to related changes
}

func (s *SLURP) emitEvent(eventType EventType, data map[string]interface{}) {
	event := &SLURPEvent{
		Type:      eventType,
		Timestamp: time.Now(),
		Source:    "slurp_core",
		Data:      data,
	}
	
	// Call event handlers asynchronously
	go s.handleEvent(event)
}

func (s *SLURP) handleEvent(event *SLURPEvent) {
	s.eventMux.RLock()
	handlers, exists := s.eventHandlers[event.Type]
	if !exists {
		s.eventMux.RUnlock()
		return
	}
	
	// Make a copy of handlers to avoid holding lock during execution
	handlersCopy := make([]EventHandler, len(handlers))
	copy(handlersCopy, handlers)
	s.eventMux.RUnlock()
	
	// Execute handlers
	for _, handler := range handlersCopy {
		func(h EventHandler) {
			defer func() {
				if r := recover(); r != nil {
					// Log handler panic but don't crash the system
				}
			}()
			
			ctx, cancel := context.WithTimeout(s.ctx, 30*time.Second)
			defer cancel()
			
			if err := h(ctx, event); err != nil {
				// Log handler error but continue with other handlers
			}
		}(handler)
	}
}

// validateSLURPConfig validates SLURP configuration for consistency and correctness
func validateSLURPConfig(config *SLURPConfig) error {
	if config.ContextResolution.MaxHierarchyDepth < 1 {
		return fmt.Errorf("max_hierarchy_depth must be at least 1")
	}
	
	if config.ContextResolution.MinConfidenceThreshold < 0 || config.ContextResolution.MinConfidenceThreshold > 1 {
		return fmt.Errorf("min_confidence_threshold must be between 0 and 1")
	}
	
	if config.TemporalAnalysis.MaxDecisionHops < 1 {
		return fmt.Errorf("max_decision_hops must be at least 1")
	}
	
	if config.TemporalAnalysis.StalenessThreshold < 0 || config.TemporalAnalysis.StalenessThreshold > 1 {
		return fmt.Errorf("staleness_threshold must be between 0 and 1")
	}
	
	if config.Performance.MaxConcurrentResolutions < 1 {
		return fmt.Errorf("max_concurrent_resolutions must be at least 1")
	}
	
	return nil
}