sub2api/backend/internal/pkg/googleapi/status.go

// Package googleapi provides helpers for Google-style API responses.
package googleapi

import "net/http"

// HTTPStatusToGoogleStatus maps HTTP status codes to Google-style error status strings.
func HTTPStatusToGoogleStatus(status int) string {
	switch status {
	case http.StatusBadRequest:
		return "INVALID_ARGUMENT"
	case http.StatusUnauthorized:
		return "UNAUTHENTICATED"
	case http.StatusForbidden:
		return "PERMISSION_DENIED"
	case http.StatusNotFound:
		return "NOT_FOUND"
	case http.StatusTooManyRequests:
		return "RESOURCE_EXHAUSTED"
	default:
		if status >= 500 {
			return "INTERNAL"
		}
		return "UNKNOWN"
	}
}