package config

import (
	"os"
	"path/filepath"
)

type Config struct {
	Port             string
	BasePath         string
	AppOrigin        string
	SessionSecret    string
	TurnstileSecret  string
	TurnstileSiteKey string
	DBPath           string
	AppDir           string
}

func Load() *Config {
	appDir := os.Getenv("APP_DIR")
	if appDir == "" {
		appDir = "."
	}

	// BasePath: no Mini PaaS, as requisições chegam com prefixo já removido, portanto "" é o ideal.
	// Se o usuário passar BASE_PATH explicitamente, respeita a variável.
	basePath := os.Getenv("BASE_PATH")

	dbPath := os.Getenv("DB_PATH")
	if dbPath == "" {
		dbPath = filepath.Join(appDir, "data", "initpage.db")
	}

	appOrigin := os.Getenv("APP_ORIGIN")
	if appOrigin == "" {
		domain := os.Getenv("PAAS_DOMAIN")
		if domain == "" {
			domain = "paas.weltonmoura.com.br"
		}
		appOrigin = "https://" + domain
	}

	return &Config{
		Port:             getEnv("PORT", "8080"),
		BasePath:         basePath,
		AppOrigin:        appOrigin,
		SessionSecret:    getEnv("SESSION_SECRET", "dev-secret-change-me"),
		TurnstileSecret:  getEnv("TURNSTILE_SECRET", ""),
		TurnstileSiteKey: getEnv("TURNSTILE_SITEKEY", ""),
		DBPath:           dbPath,
		AppDir:           appDir,
	}
}

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