package auth

import (
	"os"
	"strconv"
)

type Config struct {
	OAuthEnabled       bool
	OAuthIssuer        string
	OAuthClientID      string
	OAuthClientSecret  string
	OAuthRedirectURI   string
	JWTSecret          []byte
	JWTExpiry          int
	RefreshTokenExpiry int
}

func LoadConfig() *Config {
	enabled, _ := strconv.ParseBool(getEnv("OAUTH_ENABLED", "false"))
	jwtExpiry, _ := strconv.Atoi(getEnv("JWT_EXPIRY", "3600"))
	refreshExpiry, _ := strconv.Atoi(getEnv("REFRESH_TOKEN_EXPIRY", "604800"))

	return &Config{
		OAuthEnabled:       enabled,
		OAuthIssuer:        getEnv("OAUTH_ISSUER", ""),
		OAuthClientID:      getEnv("OAUTH_CLIENT_ID", ""),
		OAuthClientSecret:  getEnv("OAUTH_CLIENT_SECRET", ""),
		OAuthRedirectURI:   getEnv("OAUTH_REDIRECT_URI", ""),
		JWTSecret:          []byte(getEnv("JWT_SECRET", "change-me-in-production")),
		JWTExpiry:          jwtExpiry,
		RefreshTokenExpiry: refreshExpiry,
	}
}

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