package main

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"

	"github.com/konduktor/konduktor/internal/config"
	"github.com/konduktor/konduktor/internal/server"
)

var (
	Version   = "0.1.0"
	BuildTime = "unknown"
	GitCommit = "unknown"
)

var (
	cfgFile string
	host    string
	port    int
	debug   bool
)

func main() {
	rootCmd := &cobra.Command{
		Use:     "konduktor",
		Short:   "Konduktor - HTTP web server",
		Long:    `Konduktor is a high-performance HTTP web server with extensible routing and process orchestration.`,
		Version: fmt.Sprintf("%s (commit: %s, built: %s)", Version, GitCommit, BuildTime),
		RunE:    runServer,
	}

	rootCmd.Flags().StringVarP(&cfgFile, "config", "c", "config.yaml", "Path to configuration file")
	rootCmd.Flags().StringVar(&host, "host", "", "Host to bind the server to")
	rootCmd.Flags().IntVar(&port, "port", 0, "Port to bind the server to")
	rootCmd.Flags().BoolVar(&debug, "debug", false, "Enable debug mode")

	if err := rootCmd.Execute(); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

func runServer(cmd *cobra.Command, args []string) error {
	cfg, err := config.Load(cfgFile)
	if err != nil {
		if os.IsNotExist(err) {
			fmt.Printf("Configuration file %s not found, using defaults\n", cfgFile)
			cfg = config.Default()
		} else {
			return fmt.Errorf("configuration loading error: %w", err)
		}
	}

	if host != "" {
		cfg.Server.Host = host
	}
	if port != 0 {
		cfg.Server.Port = port
	}
	if debug {
		cfg.Logging.Level = "DEBUG"
	}

	srv, err := server.New(cfg)
	if err != nil {
		return fmt.Errorf("server creation error: %w", err)
	}

	fmt.Printf("Starting Konduktor server on %s:%d\n", cfg.Server.Host, cfg.Server.Port)

	if err := srv.Run(); err != nil {
		return fmt.Errorf("server startup error: %w", err)
	}

	return nil
}