package main

import (
	"fmt"
	"os"
	"path/filepath"

	"chorus/internal/hapui"
	"chorus/internal/runtime"
)

func main() {
	// Early CLI handling: print help/version without requiring env/config
	for _, a := range os.Args[1:] {
		switch a {
		case "--help", "-h", "help":
			fmt.Printf("%s-hap %s\n\n", runtime.AppName, runtime.AppVersion)
			fmt.Println("Usage:")
			fmt.Printf("  %s [--help] [--version]\n\n", filepath.Base(os.Args[0]))
			fmt.Println("CHORUS Human Agent Portal - Human Interface to P2P Agent Networks")
			fmt.Println()
			fmt.Println("This binary provides a human-friendly interface to participate in P2P agent")
			fmt.Println("coordination networks. Humans can collaborate with autonomous agents using")
			fmt.Println("the same protocols and appear as peers in the distributed network.")
			fmt.Println()
			fmt.Println("Environment (common):")
			fmt.Println("  CHORUS_LICENSE_ID              (required)")
			fmt.Println("  CHORUS_AGENT_ID                (optional; auto-generated if empty)")
			fmt.Println("  CHORUS_P2P_PORT                (default 9000)")
			fmt.Println("  CHORUS_API_PORT                (default 8080)")
			fmt.Println("  CHORUS_HEALTH_PORT             (default 8081)")
			fmt.Println("  CHORUS_DHT_ENABLED             (default true)")
			fmt.Println("  CHORUS_BOOTSTRAP_PEERS         (comma-separated multiaddrs)")
			fmt.Println("  OLLAMA_ENDPOINT                (default http://localhost:11434)")
			fmt.Println()
			fmt.Println("HAP-Specific Environment:")
			fmt.Println("  CHORUS_HAP_MODE                (terminal|web, default terminal)")
			fmt.Println("  CHORUS_HAP_WEB_PORT            (default 8082)")
			fmt.Println()
			fmt.Println("Example:")
			fmt.Println("  CHORUS_LICENSE_ID=dev-123 \\")
			fmt.Println("  CHORUS_AGENT_ID=human-alice \\")
			fmt.Println("  CHORUS_HAP_MODE=terminal \\")
			fmt.Println("  CHORUS_P2P_PORT=9001 ./chorus-hap")
			fmt.Println()
			fmt.Println("HAP Features:")
			fmt.Println("  - Human-friendly message composition")
			fmt.Println("  - HMMM reasoning template helpers")
			fmt.Println("  - UCXL context browsing")
			fmt.Println("  - Collaborative decision participation")
			fmt.Println("  - Terminal and web interface modes")
			fmt.Println("  - Same P2P protocols as autonomous agents")
			return
		case "--version", "-v":
			fmt.Printf("%s-hap %s\n", runtime.AppName, runtime.AppVersion)
			return
		}
	}

	// Initialize shared P2P runtime (same as agent)
	sharedRuntime, err := runtime.Initialize("hap")
	if err != nil {
		fmt.Fprintf(os.Stderr, "❌ Failed to initialize CHORUS HAP: %v\n", err)
		os.Exit(1)
	}
	defer sharedRuntime.Cleanup()

	// Start HAP mode with human interface
	if err := startHAPMode(sharedRuntime); err != nil {
		fmt.Fprintf(os.Stderr, "❌ HAP mode failed: %v\n", err)
		os.Exit(1)
	}
}

// startHAPMode runs the Human Agent Portal with interactive interface
func startHAPMode(runtime *runtime.SharedRuntime) error {
	runtime.Logger.Info("👤 Starting CHORUS Human Agent Portal (HAP)")
	runtime.Logger.Info("🔗 Connected to P2P network as human agent")
	runtime.Logger.Info("📝 Ready for collaborative reasoning and decision making")

	// Get HAP mode from environment (terminal or web)
	hapMode := os.Getenv("CHORUS_HAP_MODE")
	if hapMode == "" {
		hapMode = "terminal"
	}

	switch hapMode {
	case "terminal":
		return startTerminalInterface(runtime)
	case "web":
		return startWebInterface(runtime)
	default:
		return fmt.Errorf("unknown HAP mode: %s (valid: terminal, web)", hapMode)
	}
}

// startTerminalInterface provides a terminal-based human interface
func startTerminalInterface(runtime *runtime.SharedRuntime) error {
	runtime.Logger.Info("💻 Starting terminal interface for human interaction")
	
	// Create and start the HAP terminal interface
	terminal := hapui.NewTerminalInterface(runtime)
	
	runtime.Logger.Info("🎯 Human agent terminal interface ready")
	
	// Start the interactive terminal
	return terminal.Start()
}

// startWebInterface provides a web-based human interface  
func startWebInterface(runtime *runtime.SharedRuntime) error {
	runtime.Logger.Info("🌐 Starting web interface for human interaction")
	
	// TODO Phase 3: Implement web interface
	// - HTTP server with WebSocket for real-time updates
	// - Web forms for HMMM message composition
	// - Context browser UI
	// - Decision voting interface
	
	runtime.Logger.Info("⚠️ Web interface not yet implemented")
	runtime.Logger.Info("🔄 HAP running in stub mode - P2P connectivity established")
	runtime.Logger.Info("📍 Next: Implement Phase 3 web interface")

	// For now, fall back to terminal mode
	return startTerminalInterface(runtime)
}