package config

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

var (
	instance *Config
	once     sync.Once
)

type Config struct {
	ServerPort   string
	DatabasePath string
	JWTSecret    string
	DataDir      string
	KubeDir      string
}

func GetConfig() *Config {
	once.Do(func() {
		dataDir := getEnv("DATA_DIR", "./data")
		instance = &Config{
			ServerPort:   getEnv("SERVER_PORT", "8080"),
			DatabasePath: filepath.Join(dataDir, "lokideploy.json"),
			JWTSecret:    getEnv("JWT_SECRET", "lokideploy-secret-key-change-in-production"),
			DataDir:      dataDir,
			KubeDir:      filepath.Join(dataDir, "kubeconfigs"),
		}
		_ = os.MkdirAll(instance.KubeDir, 0755)
	})
	return instance
}

func getEnv(key, defaultVal string) string {
	if val := os.Getenv(key); val != "" {
		return val
	}
	return defaultVal
}