shoc-backend/Api.SeaHavenIndustries/DTOs/LocationAccountIdMapping.cs

using System.Globalization;
using FluentValidation;
using FluentValidation.Results;

namespace Api.SeaHavenIndustries.DTOs
{
    internal static class LocationAccountIdMapping
    {
        public static int? ParseOptional(string? raw)
        {
            if (string.IsNullOrWhiteSpace(raw))
                return null;

            if (!int.TryParse(raw.Trim(), NumberStyles.Integer, CultureInfo.InvariantCulture, out var id))
            {
                throw new ValidationException(new[]
                {
                    new ValidationFailure("AccountId", "accountId must be a valid integer.")
                });
            }

            return id;
        }
    }
}