package nstatus

import (
	"git.noahlan.cn/noahlan/ntool-biz/core/nstatus/code"
)

// ConvertErr is a convenience function which removes the need to handle the
// boolean return value from FromError.
func ConvertErr(err error) *Result {
	s, ok := FromError(err)
	if !ok {
		// 尝试grpc
		return WrapGrpcErr(err)
	}
	return s
}

// FromError returns a Status representation of err.
//
//   - If err was produced by this package *Result`, the appropriate Result is returned.
//   - If err is nil, a nil is returned.
//
//   - Otherwise, err is an error not compatible with this package.  In this
//     case, a *Result is returned with code.StatusUnknown and err's Error() message,
//     and ok is false.
func FromError(err error) (s *Result, ok bool) {
	if err == nil {
		return nil, false
	}
	if se, ok := err.(*Result); ok {
		return se, true
	}
	return NewResult(code.StatusUnknown, err.Error()), false
}