saveinmed/backend/internal/config/config.go
2025-12-21 22:16:11 -03:00

105 lines
2.9 KiB
Go

package config
import (
"fmt"
"os"
"strconv"
"strings"
"time"
)
// Config centralizes runtime configuration loaded from the environment.
type Config struct {
AppName string
Port string
DatabaseURL string
MaxOpenConns int
MaxIdleConns int
ConnMaxIdle time.Duration
MercadoPagoBaseURL string
MarketplaceCommission float64
JWTSecret string
JWTExpiresIn time.Duration
PasswordPepper string
CORSOrigins []string
SwaggerHost string
SwaggerSchemes []string
}
// Load reads configuration from environment variables and applies sane defaults
// for local development.
func Load() Config {
cfg := Config{
AppName: getEnv("APP_NAME", "saveinmed-performance-core"),
Port: getEnv("BACKEND_PORT", "8214"),
DatabaseURL: getEnv("DATABASE_URL", "postgres://postgres:postgres@localhost:5432/saveinmed?sslmode=disable"),
MaxOpenConns: getEnvInt("DB_MAX_OPEN_CONNS", 15),
MaxIdleConns: getEnvInt("DB_MAX_IDLE_CONNS", 5),
ConnMaxIdle: getEnvDuration("DB_CONN_MAX_IDLE", 5*time.Minute),
MercadoPagoBaseURL: getEnv("MERCADOPAGO_BASE_URL", "https://api.mercadopago.com"),
MarketplaceCommission: getEnvFloat("MARKETPLACE_COMMISSION", 2.5),
JWTSecret: getEnv("JWT_SECRET", "dev-secret"),
JWTExpiresIn: getEnvDuration("JWT_EXPIRES_IN", 24*time.Hour),
PasswordPepper: getEnv("PASSWORD_PEPPER", ""),
CORSOrigins: getEnvStringSlice("CORS_ORIGINS", []string{"*"}),
SwaggerHost: getEnv("SWAGGER_HOST", ""),
SwaggerSchemes: getEnvStringSlice("SWAGGER_SCHEMES", []string{"http"}),
}
return cfg
}
// Addr returns the address binding for the HTTP server.
func (c Config) Addr() string {
return fmt.Sprintf(":%s", c.Port)
}
func getEnv(key, fallback string) string {
if value := os.Getenv(key); value != "" {
return value
}
return fallback
}
func getEnvInt(key string, fallback int) int {
if value := os.Getenv(key); value != "" {
if parsed, err := strconv.Atoi(value); err == nil {
return parsed
}
}
return fallback
}
func getEnvDuration(key string, fallback time.Duration) time.Duration {
if value := os.Getenv(key); value != "" {
if parsed, err := time.ParseDuration(value); err == nil {
return parsed
}
}
return fallback
}
func getEnvFloat(key string, fallback float64) float64 {
if value := os.Getenv(key); value != "" {
if parsed, err := strconv.ParseFloat(value, 64); err == nil {
return parsed
}
}
return fallback
}
func getEnvStringSlice(key string, fallback []string) []string {
if value := os.Getenv(key); value != "" {
parts := strings.Split(value, ",")
result := make([]string, 0, len(parts))
for _, p := range parts {
if trimmed := strings.TrimSpace(p); trimmed != "" {
result = append(result, trimmed)
}
}
if len(result) > 0 {
return result
}
}
return fallback
}