first commit

backend/internal/config/config.go

@@ -0,0 +1,119 @@
+package config
+
+import (
+	"log/slog"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type Config struct {
+	AppEnv             string
+	AppPublicURL       string
+	AppTimezone        string
+	HTTPAddr           string
+	LogLevel           slog.Level
+	DatabaseURL        string
+	SuperAdminEmail    string
+	SuperAdminPassword string
+	JWTSecret          string
+	AccessTokenTTL     time.Duration
+	RefreshTokenTTL    time.Duration
+	CORSAllowedOrigins []string
+	CalendarProvider   string
+	CalendarAPIBaseURL string
+	CalendarAPIKey     string
+	CalendarCacheTTL   time.Duration
+	UploadMaxSizeMB    int
+	UploadAllowedMIMEs []string
+	StorageDriver      string
+	StorageLocalPath   string
+	SMTPHost           string
+	SMTPPort           string
+	SMTPUser           string
+	SMTPPassword       string
+	SMTPFromEmail      string
+	SMTPFromName       string
+}
+
+func Load() Config {
+	return Config{
+		AppEnv:             env("APP_ENV", "development"),
+		AppPublicURL:       env("APP_PUBLIC_URL", "http://localhost:5173"),
+		AppTimezone:        env("APP_TIMEZONE", "America/Sao_Paulo"),
+		HTTPAddr:           env("HTTP_ADDR", ":8080"),
+		LogLevel:           logLevel(env("LOG_LEVEL", "info")),
+		DatabaseURL:        env("DATABASE_URL", "postgres://mira:mira@localhost:5432/mira?sslmode=disable"),
+		SuperAdminEmail:    env("SUPER_ADMIN_EMAIL", ""),
+		SuperAdminPassword: env("SUPER_ADMIN_PASSWORD", ""),
+		JWTSecret:          env("JWT_SECRET", ""),
+		AccessTokenTTL:     minutes("JWT_ACCESS_TOKEN_TTL_MINUTES", 15),
+		RefreshTokenTTL:    hours("JWT_REFRESH_TOKEN_TTL_DAYS", 7*24),
+		CORSAllowedOrigins: list("CORS_ALLOWED_ORIGINS", "http://localhost:5173"),
+		CalendarProvider:   env("CALENDAR_PROVIDER", "brasilapi"),
+		CalendarAPIBaseURL: env("CALENDAR_API_BASE_URL", "https://brasilapi.com.br"),
+		CalendarAPIKey:     env("CALENDAR_API_KEY", ""),
+		CalendarCacheTTL:   hours("CALENDAR_CACHE_TTL_HOURS", 24),
+		UploadMaxSizeMB:    integer("UPLOAD_MAX_SIZE_MB", 10),
+		UploadAllowedMIMEs: list("UPLOAD_ALLOWED_MIME_TYPES", "image/jpeg,image/png,image/webp,application/pdf"),
+		StorageDriver:      env("STORAGE_DRIVER", "local"),
+		StorageLocalPath:   env("STORAGE_LOCAL_PATH", "/var/lib/mira/uploads"),
+		SMTPHost:           env("SMTP_HOST", ""),
+		SMTPPort:           env("SMTP_PORT", "587"),
+		SMTPUser:           env("SMTP_USER", ""),
+		SMTPPassword:       env("SMTP_PASSWORD", ""),
+		SMTPFromEmail:      env("SMTP_FROM_EMAIL", ""),
+		SMTPFromName:       env("SMTP_FROM_NAME", "Mira"),
+	}
+}
+
+func env(key, fallback string) string {
+	value := strings.TrimSpace(os.Getenv(key))
+	if value == "" {
+		return fallback
+	}
+	return value
+}
+
+func list(key, fallback string) []string {
+	raw := env(key, fallback)
+	parts := strings.Split(raw, ",")
+	values := make([]string, 0, len(parts))
+	for _, part := range parts {
+		value := strings.TrimSpace(part)
+		if value != "" {
+			values = append(values, value)
+		}
+	}
+	return values
+}
+
+func integer(key string, fallback int) int {
+	value, err := strconv.Atoi(env(key, ""))
+	if err != nil {
+		return fallback
+	}
+	return value
+}
+
+func minutes(key string, fallback int) time.Duration {
+	return time.Duration(integer(key, fallback)) * time.Minute
+}
+
+func hours(key string, fallback int) time.Duration {
+	return time.Duration(integer(key, fallback)) * time.Hour
+}
+
+func logLevel(value string) slog.Level {
+	switch strings.ToLower(value) {
+	case "debug":
+		return slog.LevelDebug
+	case "warn":
+		return slog.LevelWarn
+	case "error":
+		return slog.LevelError
+	default:
+		return slog.LevelInfo
+	}
+}