namespace Novelly.Api.Common.Validation;

public static class ValidationResultExtensions
{
    /// <summary>
    /// The service-level half of "validate again and throw if invalid": callers that reach
    /// a service directly (agent tools, MCP, tests) skip the API's <see cref="ValidationEndpointFilter"/>,
    /// so services re-run the same validator and throw rather than act on bad data.
    /// </summary>
    public static void ThrowIfInvalid(this ValidationResult result)
    {
        if (result.IsInvalid)
        {
            throw new ArgumentException(string.Join("; ", result.Errors.Select(e => $"{e.PropertyName}: {e.Message}")));
        }
    }
}