package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"os/signal"
	"runtime"
	"syscall"

	"ftp-server/config"
	ftpserver "ftp-server/ftp"
	httpfileserver "ftp-server/httpfile"
	webserver "ftp-server/web"
)

func main() {
	configPath := flag.String("config", "config.json", "配置文件路径")
	flag.Parse()

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

	fmt.Println("======================================")
	fmt.Println("       FTP Server (Cross-Platform)")
	fmt.Println("======================================")
	fmt.Printf("OS/Arch:     %s/%s\n", runtime.GOOS, runtime.GOARCH)
	fmt.Printf("FTP Port:    %d\n", cfg.FTP.Port)
	fmt.Printf("Web Admin:   http://127.0.0.1:%d\n", cfg.Web.Port)
	if cfg.HTTPFile.Enable {
		fmt.Printf("HTTP Files:  http://127.0.0.1:%d\n", cfg.HTTPFile.Port)
	}
	fmt.Printf("Admin User:  %s\n", cfg.Admin.Username)
	fmt.Printf("Root Dir:    %s\n", cfg.FTP.RootDir)
	fmt.Println("======================================")

	// Ensure root directory exists
	if err := os.MkdirAll(cfg.FTP.RootDir, 0755); err != nil {
		log.Fatalf("Failed to create root directory: %v", err)
	}

	// Start FTP server
	ftpSrv := ftpserver.NewServer(cfg, *configPath)
	if err := ftpSrv.Start(); err != nil {
		log.Fatalf("Failed to start FTP server: %v", err)
	}

	// Start Web admin server
	webSrv := webserver.NewServer(cfg, *configPath)
	go func() {
		if err := webSrv.Start(); err != nil {
			log.Fatalf("Failed to start web server: %v", err)
		}
	}()

	// Start HTTP file server
	if cfg.HTTPFile.Enable {
		fileSrv := httpfileserver.NewServer(cfg)
		go func() {
			if err := fileSrv.Start(); err != nil {
				log.Fatalf("Failed to start HTTP file server: %v", err)
			}
		}()
	}

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

	fmt.Printf("\nReceived signal %v, shutting down...\n", sig)
	ftpSrv.Stop()
	fmt.Println("FTP Server stopped.")
}