bzzz/main.go

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"
	"path/filepath"
	"reflect"
	"syscall"
	"time"

	"chorus.services/bzzz/api"
	"chorus.services/bzzz/coordinator"
	"chorus.services/bzzz/discovery"
	"chorus.services/bzzz/logging"
	"chorus.services/bzzz/p2p"
	"chorus.services/bzzz/pkg/config"
	"chorus.services/bzzz/pkg/crypto"
	"chorus.services/bzzz/pkg/health"
	"chorus.services/bzzz/pkg/shutdown"
	"chorus.services/bzzz/pkg/ucxi"
	"chorus.services/bzzz/pkg/ucxl"
	"chorus.services/bzzz/pubsub"
	"chorus.services/bzzz/reasoning"
	
	"github.com/libp2p/go-libp2p-kad-dht"
	"github.com/libp2p/go-libp2p/core/peer"
	"github.com/multiformats/go-multiaddr"
)

// SimpleTaskTracker tracks active tasks for availability reporting
type SimpleTaskTracker struct {
	maxTasks         int
	activeTasks      map[string]bool
	decisionPublisher *ucxl.DecisionPublisher
}

// GetActiveTasks returns list of active task IDs
func (t *SimpleTaskTracker) GetActiveTasks() []string {
	tasks := make([]string, 0, len(t.activeTasks))
	for taskID := range t.activeTasks {
		tasks = append(tasks, taskID)
	}
	return tasks
}

// GetMaxTasks returns maximum number of concurrent tasks
func (t *SimpleTaskTracker) GetMaxTasks() int {
	return t.maxTasks
}

// AddTask marks a task as active
func (t *SimpleTaskTracker) AddTask(taskID string) {
	t.activeTasks[taskID] = true
}

// RemoveTask marks a task as completed and publishes decision if publisher available
func (t *SimpleTaskTracker) RemoveTask(taskID string) {
	delete(t.activeTasks, taskID)
	
	// Publish task completion decision if publisher is available
	if t.decisionPublisher != nil {
		t.publishTaskCompletion(taskID, true, "Task completed successfully", nil)
	}
}

// CompleteTaskWithDecision marks a task as completed and publishes detailed decision
func (t *SimpleTaskTracker) CompleteTaskWithDecision(taskID string, success bool, summary string, filesModified []string) {
	delete(t.activeTasks, taskID)
	
	// Publish task completion decision if publisher is available
	if t.decisionPublisher != nil {
		t.publishTaskCompletion(taskID, success, summary, filesModified)
	}
}

// SetDecisionPublisher sets the decision publisher for task completion tracking
func (t *SimpleTaskTracker) SetDecisionPublisher(publisher *ucxl.DecisionPublisher) {
	t.decisionPublisher = publisher
}

// publishTaskCompletion publishes a task completion decision to DHT
func (t *SimpleTaskTracker) publishTaskCompletion(taskID string, success bool, summary string, filesModified []string) {
	if t.decisionPublisher == nil {
		return
	}
	
	if err := t.decisionPublisher.PublishTaskCompletion(taskID, success, summary, filesModified); err != nil {
		fmt.Printf("⚠️ Failed to publish task completion for %s: %v\n", taskID, err)
	} else {
		fmt.Printf("📤 Published task completion decision for: %s\n", taskID)
	}
}

func main() {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	fmt.Println("🚀 Starting Bzzz + HMMM P2P Task Coordination System...")

	// Load configuration
	cfg, err := config.LoadConfig("")
	if err != nil {
		log.Fatalf("Failed to load configuration: %v", err)
	}

	// Initialize P2P node
	node, err := p2p.NewNode(ctx)
	if err != nil {
		log.Fatalf("Failed to create P2P node: %v", err)
	}
	defer node.Close()

	// Apply node-specific configuration if agent ID is not set
	if cfg.Agent.ID == "" {
		nodeID := node.ID().ShortString()
		nodeSpecificCfg := config.GetNodeSpecificDefaults(nodeID)
		
		// Merge node-specific defaults with loaded config
		cfg.Agent.ID = nodeSpecificCfg.Agent.ID
		if len(cfg.Agent.Capabilities) == 0 {
			cfg.Agent.Capabilities = nodeSpecificCfg.Agent.Capabilities
		}
		if len(cfg.Agent.Models) == 0 {
			cfg.Agent.Models = nodeSpecificCfg.Agent.Models
		}
		if cfg.Agent.Specialization == "" {
			cfg.Agent.Specialization = nodeSpecificCfg.Agent.Specialization
		}
	}

	// Apply role-based configuration if no role is set
	if cfg.Agent.Role == "" {
		// Determine default role based on specialization
		defaultRole := getDefaultRoleForSpecialization(cfg.Agent.Specialization)
		if defaultRole != "" {
			fmt.Printf("🎭 Applying default role: %s\n", defaultRole)
			if err := cfg.ApplyRoleDefinition(defaultRole); err != nil {
				fmt.Printf("⚠️ Failed to apply role definition: %v\n", err)
			} else {
				fmt.Printf("✅ Role applied: %s\n", cfg.Agent.Role)
			}
		}
	}

	fmt.Printf("🐝 Bzzz node started successfully\n")
	fmt.Printf("📍 Node ID: %s\n", node.ID().ShortString())
	fmt.Printf("🤖 Agent ID: %s\n", cfg.Agent.ID)
	fmt.Printf("🎯 Specialization: %s\n", cfg.Agent.Specialization)
	
	// Display authority level if role is configured
	if cfg.Agent.Role != "" {
		authority, err := cfg.GetRoleAuthority(cfg.Agent.Role)
		if err == nil {
			fmt.Printf("🎭 Role: %s (Authority: %s)\n", cfg.Agent.Role, authority)
			if authority == config.AuthorityMaster {
				fmt.Printf("👑 This node can become admin/SLURP\n")
			}
		}
	}
	
	fmt.Printf("🐝 WHOOSH API: %s\n", cfg.HiveAPI.BaseURL)
	fmt.Printf("🔗 Listening addresses:\n")
	for _, addr := range node.Addresses() {
		fmt.Printf("   %s/p2p/%s\n", addr, node.ID())
	}

	// Initialize Hypercore-style logger
	hlog := logging.NewHypercoreLog(node.ID())
	hlog.Append(logging.PeerJoined, map[string]interface{}{"status": "started"})
	fmt.Printf("📝 Hypercore logger initialized\n")

	// Initialize mDNS discovery
	mdnsDiscovery, err := discovery.NewMDNSDiscovery(ctx, node.Host(), "bzzz-peer-discovery")
	if err != nil {
		log.Fatalf("Failed to create mDNS discovery: %v", err)
	}
	defer mdnsDiscovery.Close()

	// Initialize PubSub with hypercore logging
	ps, err := pubsub.NewPubSubWithLogger(ctx, node.Host(), "bzzz/coordination/v1", "hmmm/meta-discussion/v1", hlog)
	if err != nil {
		log.Fatalf("Failed to create PubSub: %v", err)
	}
	defer ps.Close()

	// Join role-based topics if role is configured
	if cfg.Agent.Role != "" {
		if err := ps.JoinRoleBasedTopics(cfg.Agent.Role, cfg.Agent.Expertise, cfg.Agent.ReportsTo); err != nil {
			fmt.Printf("⚠️ Failed to join role-based topics: %v\n", err)
		} else {
			fmt.Printf("🎯 Joined role-based collaboration topics\n")
		}
	}
	
	// === Admin Election System ===
	// Initialize election manager
	electionManager := election.NewElectionManager(ctx, cfg, node.Host(), ps, node.ID().ShortString())
	
	// Set election callbacks
	electionManager.SetCallbacks(
		func(oldAdmin, newAdmin string) {
			fmt.Printf("👑 Admin changed: %s -> %s\n", oldAdmin, newAdmin)
			
			// If this node becomes admin, enable SLURP functionality
			if newAdmin == node.ID().ShortString() {
				fmt.Printf("🎯 This node is now admin - enabling SLURP functionality\n")
				cfg.Slurp.Enabled = true
				// Apply admin role configuration
				if err := cfg.ApplyRoleDefinition("admin"); err != nil {
					fmt.Printf("⚠️ Failed to apply admin role: %v\n", err)
				}
			}
		},
		func(winner string) {
			fmt.Printf("🏆 Election completed, winner: %s\n", winner)
		},
	)
	
	// Start election manager
	if err := electionManager.Start(); err != nil {
		fmt.Printf("❌ Failed to start election manager: %v\n", err)
	} else {
		fmt.Printf("✅ Election manager started\n")
	}
	defer electionManager.Stop()
	
	// Start admin heartbeat if this node is admin
	if electionManager.IsCurrentAdmin() {
		go func() {
			ticker := time.NewTicker(cfg.Security.ElectionConfig.HeartbeatTimeout / 2)
			defer ticker.Stop()
			
			for {
				select {
				case <-ctx.Done():
					return
				case <-ticker.C:
					if electionManager.IsCurrentAdmin() {
						if err := electionManager.SendAdminHeartbeat(); err != nil {
							fmt.Printf("❌ Failed to send admin heartbeat: %v\n", err)
						}
					}
				}
			}
		}()
	}
	// ============================
	
	// === DHT Storage and Decision Publishing ===
	// Initialize DHT for distributed storage
	var dhtNode *kadht.IpfsDHT
	var encryptedStorage *dht.EncryptedDHTStorage  
	var decisionPublisher *ucxl.DecisionPublisher
	
	if cfg.V2.DHT.Enabled {
		// Create DHT
		dhtNode, err = kadht.New(ctx, node.Host())
		if err != nil {
			fmt.Printf("⚠️ Failed to create DHT: %v\n", err)
		} else {
			fmt.Printf("🕸️ DHT initialized\n")
			
			// Bootstrap DHT
			if err := dhtNode.Bootstrap(ctx); err != nil {
				fmt.Printf("⚠️ DHT bootstrap failed: %v\n", err)
			}
			
			// Connect to bootstrap peers if configured  
			for _, addrStr := range cfg.V2.DHT.BootstrapPeers {
				addr, err := multiaddr.NewMultiaddr(addrStr)
				if err != nil {
					fmt.Printf("⚠️ Invalid bootstrap address %s: %v\n", addrStr, err)
					continue
				}
				
				// Extract peer info from multiaddr
				info, err := peer.AddrInfoFromP2pAddr(addr)
				if err != nil {
					fmt.Printf("⚠️ Failed to parse peer info from %s: %v\n", addrStr, err)
					continue
				}
				
				if err := node.Host().Connect(ctx, *info); err != nil {
					fmt.Printf("⚠️ Failed to connect to bootstrap peer %s: %v\n", addrStr, err)
				} else {
					fmt.Printf("🔗 Connected to DHT bootstrap peer: %s\n", addrStr)
				}
			}
			
			// Initialize encrypted storage
			encryptedStorage = dht.NewEncryptedDHTStorage(
				ctx,
				node.Host(), 
				dhtNode,
				cfg,
				node.ID().ShortString(),
			)
			
			// Start cache cleanup
			encryptedStorage.StartCacheCleanup(5 * time.Minute)
			fmt.Printf("🔐 Encrypted DHT storage initialized\n")
			
			// Initialize decision publisher
			decisionPublisher = ucxl.NewDecisionPublisher(
				ctx,
				cfg,
				encryptedStorage,
				node.ID().ShortString(),
				cfg.Agent.ID,
			)
			fmt.Printf("📤 Decision publisher initialized\n")
			
			// Test the encryption system on startup
			go func() {
				time.Sleep(2 * time.Second) // Wait for initialization
				if err := crypto.TestAgeEncryption(); err != nil {
					fmt.Printf("❌ Age encryption test failed: %v\n", err)
				} else {
					fmt.Printf("✅ Age encryption test passed\n")
				}
				
				if err := crypto.TestShamirSecretSharing(); err != nil {
					fmt.Printf("❌ Shamir secret sharing test failed: %v\n", err)
				} else {
					fmt.Printf("✅ Shamir secret sharing test passed\n")
				}
				
				// Test end-to-end encrypted decision flow
				time.Sleep(3 * time.Second) // Wait a bit more
				testEndToEndDecisionFlow(decisionPublisher, encryptedStorage)
			}()
		}
	} else {
		fmt.Printf("⚪ DHT disabled in configuration\n")
	}
	defer func() {
		if dhtNode != nil {
			dhtNode.Close()
		}
	}()
	// ===========================================

	// === Task Coordination Integration ===
	// Initialize Task Coordinator
	taskCoordinator := coordinator.NewTaskCoordinator(
		ctx,
		nil, // No WHOOSH client
		ps,
		hlog,
		cfg,
		node.ID().ShortString(),
	)
	
	// Start task coordination
	taskCoordinator.Start()
	fmt.Printf("✅ Task coordination system active\n")
	// ==========================

	// Start HTTP API server
	httpServer := api.NewHTTPServer(8080, hlog, ps)
	go func() {
		if err := httpServer.Start(); err != nil && err != http.ErrServerClosed {
			fmt.Printf("❌ HTTP server error: %v\n", err)
		}
	}()
	defer httpServer.Stop()
	fmt.Printf("🌐 HTTP API server started on :8080\n")

	// === UCXI Server Integration ===
	// Initialize UCXI server if UCXL protocol is enabled
	var ucxiServer *ucxi.Server
	if cfg.UCXL.Enabled && cfg.UCXL.Server.Enabled {
		// Create storage directory
		storageDir := cfg.UCXL.Storage.Directory
		if storageDir == "" {
			storageDir = filepath.Join(os.TempDir(), "bzzz-ucxi-storage")
		}
		
		storage, err := ucxi.NewBasicContentStorage(storageDir)
		if err != nil {
			fmt.Printf("⚠️ Failed to create UCXI storage: %v\n", err)
		} else {
			// Create resolver
			resolver := ucxi.NewBasicAddressResolver(node.ID().ShortString())
			resolver.SetDefaultTTL(cfg.UCXL.Resolution.CacheTTL)
			
			// TODO: Add P2P integration hooks here
			// resolver.SetAnnounceHook(...)
			// resolver.SetDiscoverHook(...)
			
			// Create UCXI server
			ucxiConfig := ucxi.ServerConfig{
				Port:     cfg.UCXL.Server.Port,
				BasePath: cfg.UCXL.Server.BasePath,
				Resolver: resolver,
				Storage:  storage,
				Logger:   ucxi.SimpleLogger{},
			}
			
			ucxiServer = ucxi.NewServer(ucxiConfig)
			go func() {
				if err := ucxiServer.Start(); err != nil && err != http.ErrServerClosed {
					fmt.Printf("❌ UCXI server error: %v\n", err)
				}
			}()
			defer func() {
				if ucxiServer != nil {
					ucxiServer.Stop()
				}
			}()
			fmt.Printf("🔗 UCXI server started on :%d%s/ucxi/v1\n", 
				cfg.UCXL.Server.Port, cfg.UCXL.Server.BasePath)
		}
	} else {
		fmt.Printf("⚪ UCXI server disabled (UCXL protocol not enabled)\n")
	}
	// ============================

	// Create simple task tracker
	taskTracker := &SimpleTaskTracker{
		maxTasks:    cfg.Agent.MaxTasks,
		activeTasks: make(map[string]bool),
	}
	
	// Connect decision publisher to task tracker if available
	if decisionPublisher != nil {
		taskTracker.SetDecisionPublisher(decisionPublisher)
		fmt.Printf("📤 Task completion decisions will be published to DHT\n")
	}

	// Announce capabilities and role
	go announceAvailability(ps, node.ID().ShortString(), taskTracker)
	go announceCapabilitiesOnChange(ps, node.ID().ShortString(), cfg)
	go announceRoleOnStartup(ps, node.ID().ShortString(), cfg)

	// Start status reporting
	go statusReporter(node)

	fmt.Printf("🔍 Listening for peers on local network...\n")
	fmt.Printf("📡 Ready for task coordination and meta-discussion\n")
	fmt.Printf("🎯 HMMM collaborative reasoning enabled\n")

	// === Comprehensive Health Monitoring & Graceful Shutdown ===
	// Initialize shutdown manager
	shutdownManager := shutdown.NewManager(30*time.Second, &simpleLogger{})
	
	// Initialize health manager
	healthManager := health.NewManager(node.ID().ShortString(), "v0.2.0", &simpleLogger{})
	healthManager.SetShutdownManager(shutdownManager)
	
	// Register health checks
	setupHealthChecks(healthManager, ps, node, dhtNode)
	
	// Register components for graceful shutdown
	setupGracefulShutdown(shutdownManager, healthManager, node, ps, mdnsDiscovery, 
		electionManagers, httpServer, ucxiServer, taskCoordinator, dhtNode)
	
	// Start health monitoring
	if err := healthManager.Start(); err != nil {
		log.Printf("❌ Failed to start health manager: %v", err)
	} else {
		fmt.Printf("❤️ Health monitoring started\n")
	}
	
	// Start health HTTP server on port 8081
	if err := healthManager.StartHTTPServer(8081); err != nil {
		log.Printf("❌ Failed to start health HTTP server: %v", err)
	} else {
		fmt.Printf("🏥 Health endpoints available at http://localhost:8081/health\n")
	}
	
	// Start shutdown manager (begins listening for signals)
	shutdownManager.Start()
	fmt.Printf("🛡️ Graceful shutdown manager started\n")
	
	fmt.Printf("✅ Bzzz system fully operational with health monitoring\n")
	
	// Wait for graceful shutdown
	shutdownManager.Wait()
	fmt.Println("✅ Bzzz system shutdown completed")
}

// setupHealthChecks configures comprehensive health monitoring
func setupHealthChecks(healthManager *health.Manager, ps *pubsub.PubSub, node *p2p.Node, dhtNode *kadht.IpfsDHT) {
	// P2P connectivity check (critical)
	p2pCheck := &health.HealthCheck{
		Name:        "p2p-connectivity",
		Description: "P2P network connectivity and peer count",
		Enabled:     true,
		Critical:    true,
		Interval:    15 * time.Second,
		Timeout:     10 * time.Second,
		Checker: func(ctx context.Context) health.CheckResult {
			connectedPeers := node.ConnectedPeers()
			minPeers := 1
			
			if connectedPeers < minPeers {
				return health.CheckResult{
					Healthy: false,
					Message: fmt.Sprintf("Insufficient P2P peers: %d < %d", connectedPeers, minPeers),
					Details: map[string]interface{}{
						"connected_peers": connectedPeers,
						"min_peers":      minPeers,
						"node_id":        node.ID().ShortString(),
					},
					Timestamp: time.Now(),
				}
			}
			
			return health.CheckResult{
				Healthy: true,
				Message: fmt.Sprintf("P2P connectivity OK: %d peers connected", connectedPeers),
				Details: map[string]interface{}{
					"connected_peers": connectedPeers,
					"min_peers":      minPeers,
					"node_id":        node.ID().ShortString(),
				},
				Timestamp: time.Now(),
			}
		},
	}
	healthManager.RegisterCheck(p2pCheck)
	
	// PubSub system check
	pubsubCheck := &health.HealthCheck{
		Name:        "pubsub-system",
		Description: "PubSub messaging system health",
		Enabled:     true,
		Critical:    false,
		Interval:    30 * time.Second,
		Timeout:     5 * time.Second,
		Checker: func(ctx context.Context) health.CheckResult {
			// Simple health check - in real implementation, test actual pub/sub
			return health.CheckResult{
				Healthy:   true,
				Message:   "PubSub system operational",
				Timestamp: time.Now(),
			}
		},
	}
	healthManager.RegisterCheck(pubsubCheck)
	
	// DHT system check (if DHT is enabled)
	if dhtNode != nil {
		dhtCheck := &health.HealthCheck{
			Name:        "dht-system",
			Description: "Distributed Hash Table system health",
			Enabled:     true,
			Critical:    false,
			Interval:    60 * time.Second,
			Timeout:     15 * time.Second,
			Checker: func(ctx context.Context) health.CheckResult {
				// In a real implementation, you would test DHT operations
				return health.CheckResult{
					Healthy:   true,
					Message:   "DHT system operational",
					Details: map[string]interface{}{
						"dht_enabled": true,
					},
					Timestamp: time.Now(),
				}
			},
		}
		healthManager.RegisterCheck(dhtCheck)
	}
	
	// Memory usage check
	memoryCheck := health.CreateMemoryCheck(0.85) // Alert if > 85%
	healthManager.RegisterCheck(memoryCheck)
	
	// Disk space check
	diskCheck := health.CreateDiskSpaceCheck("/tmp", 0.90) // Alert if > 90%
	healthManager.RegisterCheck(diskCheck)
}

// setupGracefulShutdown registers all components for proper shutdown
func setupGracefulShutdown(shutdownManager *shutdown.Manager, healthManager *health.Manager, 
	node *p2p.Node, ps *pubsub.PubSub, mdnsDiscovery interface{}, electionManagers interface{},
	httpServer *api.HTTPServer, ucxiServer *ucxi.Server, taskCoordinator interface{}, dhtNode *kadht.IpfsDHT) {
	
	// Health manager (stop health checks early)
	healthComponent := shutdown.NewGenericComponent("health-manager", 10, true).
		SetShutdownFunc(func(ctx context.Context) error {
			return healthManager.Stop()
		})
	shutdownManager.Register(healthComponent)
	
	// HTTP servers
	if httpServer != nil {
		httpComponent := shutdown.NewGenericComponent("main-http-server", 20, true).
			SetShutdownFunc(func(ctx context.Context) error {
				return httpServer.Stop()
			})
		shutdownManager.Register(httpComponent)
	}
	
	if ucxiServer != nil {
		ucxiComponent := shutdown.NewGenericComponent("ucxi-server", 21, true).
			SetShutdownFunc(func(ctx context.Context) error {
				ucxiServer.Stop()
				return nil
			})
		shutdownManager.Register(ucxiComponent)
	}
	
	// Task coordination system
	if taskCoordinator != nil {
		taskComponent := shutdown.NewGenericComponent("task-coordinator", 30, true).
			SetCloser(func() error {
				// In real implementation, gracefully stop task coordinator
				return nil
			})
		shutdownManager.Register(taskComponent)
	}
	
	// DHT system
	if dhtNode != nil {
		dhtComponent := shutdown.NewGenericComponent("dht-node", 35, true).
			SetCloser(func() error {
				return dhtNode.Close()
			})
		shutdownManager.Register(dhtComponent)
	}
	
	// PubSub system
	if ps != nil {
		pubsubComponent := shutdown.NewGenericComponent("pubsub-system", 40, true).
			SetCloser(func() error {
				return ps.Close()
			})
		shutdownManager.Register(pubsubComponent)
	}
	
	// mDNS discovery
	if mdnsDiscovery != nil {
		mdnsComponent := shutdown.NewGenericComponent("mdns-discovery", 50, true).
			SetCloser(func() error {
				// In real implementation, close mDNS discovery properly
				return nil
			})
		shutdownManager.Register(mdnsComponent)
	}
	
	// P2P node (close last as other components depend on it)
	p2pComponent := shutdown.NewP2PNodeComponent("p2p-node", func() error {
		return node.Close()
	}, 60)
	shutdownManager.Register(p2pComponent)
	
	// Add shutdown hooks
	setupShutdownHooks(shutdownManager)
}

// setupShutdownHooks adds hooks for different shutdown phases
func setupShutdownHooks(shutdownManager *shutdown.Manager) {
	// Pre-shutdown: Save state and notify peers
	shutdownManager.AddHook(shutdown.PhasePreShutdown, func(ctx context.Context) error {
		fmt.Println("🔄 Pre-shutdown: Notifying peers and saving state...")
		// In real implementation: notify peers, save critical state
		return nil
	})
	
	// Post-shutdown: Final cleanup
	shutdownManager.AddHook(shutdown.PhasePostShutdown, func(ctx context.Context) error {
		fmt.Println("🔄 Post-shutdown: Performing final cleanup...")
		// In real implementation: flush logs, clean temporary files
		return nil
	})
	
	// Cleanup: Final state persistence
	shutdownManager.AddHook(shutdown.PhaseCleanup, func(ctx context.Context) error {
		fmt.Println("🔄 Cleanup: Finalizing shutdown...")
		// In real implementation: persist final state, cleanup resources
		return nil
	})
}

// simpleLogger implements basic logging for shutdown and health systems
type simpleLogger struct{}

func (l *simpleLogger) Info(msg string, args ...interface{}) {
	fmt.Printf("[INFO] "+msg+"\n", args...)
}

func (l *simpleLogger) Warn(msg string, args ...interface{}) {
	fmt.Printf("[WARN] "+msg+"\n", args...)
}

func (l *simpleLogger) Error(msg string, args ...interface{}) {
	fmt.Printf("[ERROR] "+msg+"\n", args...)
}

// announceAvailability broadcasts current working status for task assignment
func announceAvailability(ps *pubsub.PubSub, nodeID string, taskTracker *SimpleTaskTracker) {
	ticker := time.NewTicker(30 * time.Second)
	defer ticker.Stop()

	for ; ; <-ticker.C {
		currentTasks := taskTracker.GetActiveTasks()
		maxTasks := taskTracker.GetMaxTasks()
		isAvailable := len(currentTasks) < maxTasks
		
		status := "ready"
		if len(currentTasks) >= maxTasks {
			status = "busy"
		} else if len(currentTasks) > 0 {
			status = "working"
		}

		availability := map[string]interface{}{
			"node_id":           nodeID,
			"available_for_work": isAvailable,
			"current_tasks":     len(currentTasks),
			"max_tasks":         maxTasks,
			"last_activity":     time.Now().Unix(),
			"status":            status,
			"timestamp":         time.Now().Unix(),
		}
		if err := ps.PublishBzzzMessage(pubsub.AvailabilityBcast, availability); err != nil {
			fmt.Printf("❌ Failed to announce availability: %v\n", err)
		}
	}
}

// detectAvailableOllamaModels queries Ollama API for available models
func detectAvailableOllamaModels() ([]string, error) {
	resp, err := http.Get("http://localhost:11434/api/tags")
	if err != nil {
		return nil, fmt.Errorf("failed to connect to Ollama API: %w", err)
	}
	defer resp.Body.Close()
	
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("Ollama API returned status %d", resp.StatusCode)
	}
	
	var tagsResponse struct {
		Models []struct {
			Name string `json:"name"`
		} `json:"models"`
	}
	
	if err := json.NewDecoder(resp.Body).Decode(&tagsResponse); err != nil {
		return nil, fmt.Errorf("failed to decode Ollama response: %w", err)
	}
	
	models := make([]string, 0, len(tagsResponse.Models))
	for _, model := range tagsResponse.Models {
		models = append(models, model.Name)
	}
	
	return models, nil
}

// selectBestModel calls the model selection webhook to choose the best model for a prompt
func selectBestModel(webhookURL string, availableModels []string, prompt string) (string, error) {
	if webhookURL == "" || len(availableModels) == 0 {
		// Fallback to first available model
		if len(availableModels) > 0 {
			return availableModels[0], nil
		}
		return "", fmt.Errorf("no models available")
	}
	
	requestPayload := map[string]interface{}{
		"models": availableModels,
		"prompt": prompt,
	}
	
	payloadBytes, err := json.Marshal(requestPayload)
	if err != nil {
		// Fallback on error
		return availableModels[0], nil
	}
	
	resp, err := http.Post(webhookURL, "application/json", bytes.NewBuffer(payloadBytes))
	if err != nil {
		// Fallback on error
		return availableModels[0], nil
	}
	defer resp.Body.Close()
	
	if resp.StatusCode != http.StatusOK {
		// Fallback on error
		return availableModels[0], nil
	}
	
	var response struct {
		Model string `json:"model"`
	}
	
	if err := json.NewDecoder(resp.Body).Decode(&response); err != nil {
		// Fallback on error
		return availableModels[0], nil
	}
	
	// Validate that the returned model is in our available list
	for _, model := range availableModels {
		if model == response.Model {
			return response.Model, nil
		}
	}
	
	// Fallback if webhook returned invalid model
	return availableModels[0], nil
}

// announceCapabilitiesOnChange broadcasts capabilities only when they change
func announceCapabilitiesOnChange(ps *pubsub.PubSub, nodeID string, cfg *config.Config) {
	// Detect available Ollama models and update config
	availableModels, err := detectAvailableOllamaModels()
	if err != nil {
		fmt.Printf("⚠️ Failed to detect Ollama models: %v\n", err)
		fmt.Printf("🔄 Using configured models: %v\n", cfg.Agent.Models)
	} else {
		// Filter configured models to only include available ones
		validModels := make([]string, 0)
		for _, configModel := range cfg.Agent.Models {
			for _, availableModel := range availableModels {
				if configModel == availableModel {
					validModels = append(validModels, configModel)
					break
				}
			}
		}
		
		if len(validModels) == 0 {
			fmt.Printf("⚠️ No configured models available in Ollama, using first available: %v\n", availableModels)
			if len(availableModels) > 0 {
				validModels = []string{availableModels[0]}
			}
		} else {
			fmt.Printf("✅ Available models: %v\n", validModels)
		}
		
		// Update config with available models
		cfg.Agent.Models = validModels
		
		// Configure reasoning module with available models and webhook
		reasoning.SetModelConfig(validModels, cfg.Agent.ModelSelectionWebhook, cfg.Agent.DefaultReasoningModel)
	}

	// Get current capabilities
	currentCaps := map[string]interface{}{
		"node_id":      nodeID,
		"capabilities": cfg.Agent.Capabilities,
		"models":       cfg.Agent.Models,
		"version":      "0.2.0",
		"specialization": cfg.Agent.Specialization,
	}

	// Load stored capabilities from file
	storedCaps, err := loadStoredCapabilities(nodeID)
	if err != nil {
		fmt.Printf("📄 No stored capabilities found, treating as first run\n")
		storedCaps = nil
	}

	// Check if capabilities have changed
	if capabilitiesChanged(currentCaps, storedCaps) {
		fmt.Printf("🔄 Capabilities changed, broadcasting update\n")
		
		currentCaps["timestamp"] = time.Now().Unix()
		currentCaps["reason"] = getChangeReason(currentCaps, storedCaps)
		
		// Broadcast the change
		if err := ps.PublishBzzzMessage(pubsub.CapabilityBcast, currentCaps); err != nil {
			fmt.Printf("❌ Failed to announce capabilities: %v\n", err)
		} else {
			// Store new capabilities
			if err := storeCapabilities(nodeID, currentCaps); err != nil {
				fmt.Printf("❌ Failed to store capabilities: %v\n", err)
			}
		}
	} else {
		fmt.Printf("✅ Capabilities unchanged since last run\n")
	}
}

// statusReporter provides periodic status updates
func statusReporter(node *p2p.Node) {
	ticker := time.NewTicker(30 * time.Second)
	defer ticker.Stop()

	for ; ; <-ticker.C {
		peers := node.ConnectedPeers()
		fmt.Printf("📊 Status: %d connected peers\n", peers)
	}
}

// getCapabilitiesFile returns the path to store capabilities for a node
func getCapabilitiesFile(nodeID string) string {
	homeDir, _ := os.UserHomeDir()
	return filepath.Join(homeDir, ".config", "bzzz", fmt.Sprintf("capabilities-%s.json", nodeID))
}

// loadStoredCapabilities loads previously stored capabilities from disk
func loadStoredCapabilities(nodeID string) (map[string]interface{}, error) {
	capFile := getCapabilitiesFile(nodeID)
	
	data, err := os.ReadFile(capFile)
	if err != nil {
		return nil, err
	}
	
	var capabilities map[string]interface{}
	if err := json.Unmarshal(data, &capabilities); err != nil {
		return nil, err
	}
	
	return capabilities, nil
}

// storeCapabilities saves current capabilities to disk
func storeCapabilities(nodeID string, capabilities map[string]interface{}) error {
	capFile := getCapabilitiesFile(nodeID)
	
	// Ensure directory exists
	if err := os.MkdirAll(filepath.Dir(capFile), 0755); err != nil {
		return err
	}
	
	data, err := json.MarshalIndent(capabilities, "", "  ")
	if err != nil {
		return err
	}
	
	return os.WriteFile(capFile, data, 0644)
}

// capabilitiesChanged compares current and stored capabilities
func capabilitiesChanged(current, stored map[string]interface{}) bool {
	if stored == nil {
		return true // First run, always announce
	}
	
	// Compare important fields that indicate capability changes
	compareFields := []string{"capabilities", "models", "specialization"}
	
	for _, field := range compareFields {
		if !reflect.DeepEqual(current[field], stored[field]) {
			return true
		}
	}
	
	return false
}

// getChangeReason determines why capabilities changed
func getChangeReason(current, stored map[string]interface{}) string {
	if stored == nil {
		return "startup"
	}
	
	if !reflect.DeepEqual(current["models"], stored["models"]) {
		return "model_change"
	}
	
	if !reflect.DeepEqual(current["capabilities"], stored["capabilities"]) {
		return "capability_change" 
	}
	
	if !reflect.DeepEqual(current["specialization"], stored["specialization"]) {
		return "specialization_change"
	}
	
	return "unknown_change"
}

// getDefaultRoleForSpecialization maps specializations to default roles
func getDefaultRoleForSpecialization(specialization string) string {
	roleMap := map[string]string{
		"code_generation":    "backend_developer",
		"advanced_reasoning": "senior_software_architect", 
		"code_analysis":      "security_expert",
		"general_developer":  "full_stack_engineer",
		"debugging":          "qa_engineer",
		"frontend":           "frontend_developer",
		"backend":            "backend_developer",
		"devops":             "devops_engineer",
		"security":           "security_expert",
		"design":             "ui_ux_designer",
		"architecture":       "senior_software_architect",
	}
	
	if role, exists := roleMap[specialization]; exists {
		return role
	}
	
	// Default fallback
	return "full_stack_engineer"
}

// announceRoleOnStartup announces the agent's role when starting up
func announceRoleOnStartup(ps *pubsub.PubSub, nodeID string, cfg *config.Config) {
	if cfg.Agent.Role == "" {
		return // No role to announce
	}

	roleData := map[string]interface{}{
		"node_id":        nodeID,
		"role":           cfg.Agent.Role,
		"expertise":      cfg.Agent.Expertise,
		"reports_to":     cfg.Agent.ReportsTo,
		"deliverables":   cfg.Agent.Deliverables,
		"capabilities":   cfg.Agent.Capabilities,
		"specialization": cfg.Agent.Specialization,
		"timestamp":      time.Now().Unix(),
		"status":         "online",
	}

	opts := pubsub.MessageOptions{
		FromRole:          cfg.Agent.Role,
		RequiredExpertise: cfg.Agent.Expertise,
		Priority:          "medium",
	}

	if err := ps.PublishRoleBasedMessage(pubsub.RoleAnnouncement, roleData, opts); err != nil {
		fmt.Printf("❌ Failed to announce role: %v\n", err)
	} else {
		fmt.Printf("📢 Role announced: %s\n", cfg.Agent.Role)
	}
}

// testEndToEndDecisionFlow tests the complete encrypted decision publishing and retrieval flow
func testEndToEndDecisionFlow(publisher *ucxl.DecisionPublisher, storage *dht.EncryptedDHTStorage) {
	if publisher == nil || storage == nil {
		fmt.Printf("⚪ Skipping end-to-end test (components not initialized)\n")
		return
	}
	
	fmt.Printf("🧪 Testing end-to-end encrypted decision flow...\n")
	
	// Test 1: Publish an architectural decision
	err := publisher.PublishArchitecturalDecision(
		"implement_unified_bzzz_slurp",
		"Integrate SLURP as specialized BZZZ agent with admin role for unified P2P architecture",
		"Eliminates separate system complexity and leverages existing P2P infrastructure",
		[]string{"Keep separate systems", "Use different consensus algorithm"},
		[]string{"Single point of coordination", "Improved failover", "Simplified deployment"},
		[]string{"Test consensus elections", "Implement key reconstruction", "Deploy to cluster"},
	)
	if err != nil {
		fmt.Printf("❌ Failed to publish architectural decision: %v\n", err)
		return
	}
	fmt.Printf("✅ Published architectural decision\n")
	
	// Test 2: Publish a code decision  
	testResults := &ucxl.TestResults{
		Passed:  15,
		Failed:  2,
		Skipped: 1,
		Coverage: 78.5,
		FailedTests: []string{"TestElection_SplitBrain", "TestCrypto_KeyReconstruction"},
	}
	
	err = publisher.PublishCodeDecision(
		"implement_age_encryption",
		"Implemented Age encryption for role-based UCXL content security",
		[]string{"pkg/crypto/age_crypto.go", "pkg/dht/encrypted_storage.go"},
		578,
		testResults,
		[]string{"filippo.io/age", "github.com/libp2p/go-libp2p-kad-dht"},
	)
	if err != nil {
		fmt.Printf("❌ Failed to publish code decision: %v\n", err)
		return
	}
	fmt.Printf("✅ Published code decision\n")
	
	// Test 3: Query recent decisions
	time.Sleep(1 * time.Second) // Allow decisions to propagate
	
	decisions, err := publisher.QueryRecentDecisions("", "", "", 10, time.Now().Add(-1*time.Hour))
	if err != nil {
		fmt.Printf("❌ Failed to query recent decisions: %v\n", err)
		return
	}
	
	fmt.Printf("🔍 Found %d recent decisions:\n", len(decisions))
	for i, metadata := range decisions {
		fmt.Printf("   %d. %s (creator: %s, type: %s)\n", 
			i+1, metadata.Address, metadata.CreatorRole, metadata.ContentType)
	}
	
	// Test 4: Retrieve and decrypt a specific decision
	if len(decisions) > 0 {
		decision, err := publisher.GetDecisionContent(decisions[0].Address)
		if err != nil {
			fmt.Printf("❌ Failed to retrieve decision content: %v\n", err)
		} else {
			fmt.Printf("✅ Retrieved decision: %s (%s)\n", decision.Task, decision.Decision)
			fmt.Printf("   Files modified: %d, Success: %t\n", len(decision.FilesModified), decision.Success)
		}
	}
	
	// Test 5: Publish system status
	metrics := map[string]interface{}{
		"uptime_seconds":    300,
		"active_peers":      3,
		"dht_entries":       len(decisions),
		"encryption_ops":    25,
		"decryption_ops":    8,
		"memory_usage_mb":   145.7,
	}
	
	healthChecks := map[string]bool{
		"dht_connected":     true,
		"elections_ready":   true,
		"crypto_functional": true,
		"peers_discovered":  true,
	}
	
	err = publisher.PublishSystemStatus("All systems operational - Phase 2B implementation complete", metrics, healthChecks)
	if err != nil {
		fmt.Printf("❌ Failed to publish system status: %v\n", err)
	} else {
		fmt.Printf("✅ Published system status\n")
	}
	
	fmt.Printf("🎉 End-to-end encrypted decision flow test completed successfully!\n")
	fmt.Printf("🔐 All decisions encrypted with role-based Age encryption\n")
	fmt.Printf("🕸️ Content stored in distributed DHT with local caching\n")
	fmt.Printf("🔍 Content discoverable and retrievable by authorized roles\n")
}