package main

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

type InstanceState string

const (
	StateStopped InstanceState = "STOPPED"
	StateRunning InstanceState = "RUNNING"
)

func CreateNewInstance(name string, version string, options VsServerConfigOptions, cfg *AppConfig) error {
	instanceDir := filepath.Join(cfg.Storage.InstancesDir, name)

	dirs := []string{
		instanceDir,
		filepath.Join(instanceDir, "Saves"),
		filepath.Join(instanceDir, "Mods"),
	}

	for _, dir := range dirs {
		if err := os.MkdirAll(dir, 0755); err != nil {
			return fmt.Errorf("Failed creating core instance directory layout: %w", err)
		}
	}

	instanceConfigPath := filepath.Join(instanceDir, "serverconfig.json")
	if err := PrepareInstanceConfig(version, instanceConfigPath, options, cfg); err != nil {
		return fmt.Errorf("Failed provisioning server baseline configuration: %w", err)
	}

	fmt.Printf("Instance '%s' (v%s) successfully initialized\n", name, version)
	return nil
}