package utils

import (
	"os"
	"strconv"

	"github.com/joho/godotenv"
)

type Config struct {
	JWTsecret string
	JWTIssuer string
	JWTTTL    int
	DBURL     string
}

func LoadConfig() *Config {
	Config := new(Config)

	err := godotenv.Load(".env")
	if err != nil {
		panic("Error loading .env file")
	}

	Config.JWTsecret = os.Getenv("JWT_SECRET")
	if Config.JWTsecret == "" {
		panic("JWT_SECRET is required")
	}

	Config.JWTIssuer = os.Getenv("JWT_ISSUER")
	if Config.JWTIssuer == "" {
		Config.JWTIssuer = "music-index-api"
	}

	Config.JWTTTL = 60
	if envTTL := os.Getenv("JWT_TTL_MINUTES"); envTTL != "" {
		parsed, parseErr := strconv.Atoi(envTTL)
		if parseErr != nil || parsed <= 0 {
			panic("JWT_TTL_MINUTES must be a positive integer")
		}
		Config.JWTTTL = parsed
	}

	Config.DBURL = os.Getenv("DATABASE_URL")
	if Config.DBURL == "" {
		panic("DATABASE_URL environment variable not set")
	}

	return Config
}