package config

import (
	"os"
	"strconv"

	"github.com/joho/godotenv"
)

type Config struct {
	Port        string
	DBPath      string
	JWTSecret   string
	JWTExpire   int // hours
	GhOstPath   string
	Debug       bool
}

var C Config

func Init() {
	_ = godotenv.Load()

	C = Config{
		Port:      getEnv("PORT", "9000"),
		DBPath:    getEnv("DB_PATH", "../backend/sqlite3.db"),
		JWTSecret: getEnv("JWT_SECRET", "sql-platform-secret-key-change-in-production"),
		JWTExpire: getEnvInt("JWT_EXPIRE_HOURS", 24),
		GhOstPath: getEnv("GH_OST_PATH", "gh-ost"),
		Debug:     getEnvBool("DEBUG", true),
	}
}

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

func getEnvInt(key string, fallback int) int {
	if v := os.Getenv(key); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			return i
		}
	}
	return fallback
}

func getEnvBool(key string, fallback bool) bool {
	if v := os.Getenv(key); v != "" {
		if b, err := strconv.ParseBool(v); err == nil {
			return b
		}
	}
	return fallback
}