package main

import (
	"fmt"
	"log"
	"os"
	"os/signal"
	"path/filepath"
	"syscall"
)

func main() {
	fmt.Println("Initializing VS server manager...")

	home, err := os.UserHomeDir()
	if err != nil {
		log.Fatalf("Could not locate user home dir")
	}

	configPath := filepath.Join(home, ".config", "vs-manager", "config.json")

	cfg, err := LoadOrCreateConfig(configPath)
	if err != nil {
		log.Fatalf("Initialization failed: %v", err)
	}

	instanceName := "sample_server"
	targetVersion := "1.22.3"

	options := VsServerConfigOptions{
		ServerName: "Sample Server",
		Port:       4000,
		MaxClients: 100,
		Password:   "",
	}

	err = DownloadAndExtractServer(targetVersion, cfg.Storage.InstallDir)
	if err != nil {
		log.Fatalf("Downloader module encountered an error: %v", err)
	}

	err = CreateNewInstance(instanceName, targetVersion, options, cfg)
	if err != nil {
		log.Fatalf("Initialization abort: %v", err)
	}

	procManager := NewProcessManager()

	fmt.Printf("\n⚡ Launching Instance: %s (v%s)\n", instanceName, targetVersion)
	err = procManager.StartInstance(instanceName, targetVersion, options, cfg)
	if err != nil {
		log.Fatalf("Process startup failed: %v", err)
	}

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)

	fmt.Println("\nServer running. Press Ctrl+C to cleanly shut down...")
	<-sigChan

	fmt.Println("\n\nTriggering graceful server termination sequence...")
	_ = procManager.SendCommand(instanceName, "stop")

	fmt.Println("Manager exited successfully.")
}