package atp

import (
	"errors"
	"fmt"
	"strings"
)

// ErrSessionExpired indicates the OAuth session can no longer be resumed.
// Callers should prompt the user to re-authenticate.
var ErrSessionExpired = errors.New("oauth session expired")

// WrapPDSError inspects an XRPC error for signals that the OAuth grant is no
// longer valid and, if so, wraps it with ErrSessionExpired.
// TODO: handle other common error types
func WrapPDSError(err error) error {
	if err == nil {
		return nil
	}
	msg := err.Error()
	if strings.Contains(msg, "invalid_grant") ||
		strings.Contains(msg, "failed to refresh OAuth tokens") ||
		strings.Contains(msg, "token is expired") {
		return fmt.Errorf("%w: %w", ErrSessionExpired, err)
	}
	return err
}