proposal-system/api/src/ProposalSystem.Application/Validators/UpdateCustomerValidator.cs

using FluentValidation;
using ProposalSystem.Application.DTOs;

namespace ProposalSystem.Application.Validators;

public class UpdateCustomerValidator : AbstractValidator<UpdateCustomerRequest>
{
    public UpdateCustomerValidator()
    {
        RuleFor(x => x.Name)
            .MaximumLength(200)
            .When(x => x.Name != null);

        RuleFor(x => x.ContactEmail)
            .EmailAddress().WithMessage("Contact email must be a valid email address")
            .MaximumLength(320)
            .When(x => !string.IsNullOrEmpty(x.ContactEmail));
    }
}