// Demo: Minimal Agent Binary
// This demonstrates the core architecture without problematic dependencies

package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"
)

// Minimal types to demonstrate the architecture
type BinaryType int

const (
	BinaryTypeAgent BinaryType = iota
	BinaryTypeHAP
)

func (bt BinaryType) String() string {
	switch bt {
	case BinaryTypeAgent:
		return "agent"
	case BinaryTypeHAP:
		return "hap"
	default:
		return "unknown"
	}
}

// Minimal runtime config
type RuntimeConfig struct {
	BinaryType BinaryType
	HTTPPort   int
	HealthPort int
}

// Minimal services
type RuntimeServices struct {
	Config    *Config
	NodeID    string
	BinaryType BinaryType
	HTTPPort   int
	HealthPort int
}

type Config struct {
	Agent struct {
		ID             string
		Role           string
		Specialization string
		MaxTasks       int
	}
}

// Minimal runtime interface
type Runtime interface {
	Initialize(ctx context.Context, cfg RuntimeConfig) (*RuntimeServices, error)
	Start(ctx context.Context, services *RuntimeServices) error
	Stop(ctx context.Context, services *RuntimeServices) error
}

// Implementation
type StandardRuntime struct {
	services *RuntimeServices
}

func NewRuntime() Runtime {
	return &StandardRuntime{}
}

func (r *StandardRuntime) Initialize(ctx context.Context, cfg RuntimeConfig) (*RuntimeServices, error) {
	fmt.Printf("🚀 Initializing BZZZ runtime (%s mode)\n", cfg.BinaryType.String())
	
	services := &RuntimeServices{
		Config: &Config{},
		NodeID: fmt.Sprintf("node-%d", time.Now().Unix()),
		BinaryType: cfg.BinaryType,
		HTTPPort: cfg.HTTPPort,
		HealthPort: cfg.HealthPort,
	}
	
	// Set some demo config
	services.Config.Agent.ID = fmt.Sprintf("agent-%s-%d", cfg.BinaryType.String(), time.Now().Unix())
	services.Config.Agent.Role = "demo_role"
	services.Config.Agent.Specialization = "demo"
	services.Config.Agent.MaxTasks = 5
	
	r.services = services
	fmt.Println("✅ Runtime initialization completed successfully")
	return services, nil
}

func (r *StandardRuntime) Start(ctx context.Context, services *RuntimeServices) error {
	fmt.Println("🚀 Starting BZZZ runtime services")
	
	// Simulate service startup
	fmt.Printf("🌐 HTTP API server started on :%d\n", services.HTTPPort)
	fmt.Printf("🏥 Health endpoints available at http://localhost:%d/health\n", services.HealthPort)
	
	fmt.Println("✅ All runtime services started successfully")
	return nil
}

func (r *StandardRuntime) Stop(ctx context.Context, services *RuntimeServices) error {
	fmt.Println("🛑 Shutting down BZZZ runtime services")
	fmt.Println("✅ Graceful shutdown completed")
	return nil
}

// Agent-specific runner
type AgentRunner struct {
	services *RuntimeServices
}

func NewAgentRunner(services *RuntimeServices) *AgentRunner {
	return &AgentRunner{services: services}
}

func (ar *AgentRunner) Start(ctx context.Context) error {
	fmt.Println("🤖 Starting autonomous agent runner")
	fmt.Printf("📍 Node ID: %s\n", ar.services.NodeID)
	fmt.Printf("🎯 Agent ID: %s\n", ar.services.Config.Agent.ID)
	fmt.Printf("🎭 Role: %s\n", ar.services.Config.Agent.Role)
	fmt.Printf("📋 Max Tasks: %d\n", ar.services.Config.Agent.MaxTasks)
	
	// Start background processes
	go ar.announceCapabilities()
	
	fmt.Println("✅ Autonomous agent runner started successfully")
	return nil
}

func (ar *AgentRunner) announceCapabilities() {
	ticker := time.NewTicker(30 * time.Second)
	defer ticker.Stop()
	
	for range ticker.C {
		fmt.Println("📡 Announcing agent capabilities to P2P network")
	}
}

func (ar *AgentRunner) Stop(ctx context.Context) error {
	fmt.Println("🛑 Stopping autonomous agent runner")
	return nil
}

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

	fmt.Println("🤖 BZZZ Autonomous Agent (Demo)")
	fmt.Println("=====================================")

	// Create runtime
	rt := NewRuntime()

	// Initialize with agent-specific config
	runtimeConfig := RuntimeConfig{
		BinaryType: BinaryTypeAgent,
		HTTPPort:   8080,
		HealthPort: 8081,
	}

	// Initialize runtime services
	services, err := rt.Initialize(ctx, runtimeConfig)
	if err != nil {
		log.Fatalf("Failed to initialize runtime: %v", err)
	}

	// Start shared services
	if err := rt.Start(ctx, services); err != nil {
		log.Fatalf("Failed to start runtime: %v", err)
	}

	// Initialize agent-specific components
	agentRunner := NewAgentRunner(services)
	if err := agentRunner.Start(ctx); err != nil {
		log.Fatalf("Failed to start agent runner: %v", err)
	}

	fmt.Println("🔍 Autonomous agent listening for task assignments")
	fmt.Println("📡 Ready for P2P task coordination")
	fmt.Println("✅ BZZZ autonomous agent system fully operational")
	
	// Show architecture separation
	fmt.Printf("\n📊 Architecture Demo:\n")
	fmt.Printf("  Binary Type: %s\n", services.BinaryType.String())
	fmt.Printf("  Shared Runtime: ✅ Initialized\n")
	fmt.Printf("  Agent Runner: ✅ Started\n")
	fmt.Printf("  HTTP Port: %d\n", services.HTTPPort)
	fmt.Printf("  Health Port: %d\n", services.HealthPort)
	fmt.Printf("  P2P Ready: ✅ (simulated)\n")

	// Wait for shutdown signals
	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
	<-sigChan

	fmt.Println("\n🛑 Shutting down autonomous agent...")

	// Stop agent runner
	if err := agentRunner.Stop(ctx); err != nil {
		fmt.Printf("Agent runner shutdown error: %v\n", err)
	}

	// Stop runtime services
	if err := rt.Stop(ctx, services); err != nil {
		fmt.Printf("Runtime shutdown error: %v\n", err)
	}

	fmt.Println("✅ BZZZ autonomous agent shutdown completed")
}