IM_NEW/ContactService.WebApi/Controllers/FriendRequestHandleRequest.cs

using ContactService.WebApi.Application.FriendRequest;
using FluentValidation;

namespace ContactService.WebApi.Controllers
{
    public class FriendRequestHandleRequest
    {
        public Guid RequestId { get; set; }
        public FriendRequestAction Action { get; set; }
        public string? RemarkName { get; set; }
    }

    public class FriendRequestHandleRequestValidator : AbstractValidator<FriendRequestHandleRequest>
    {
        public FriendRequestHandleRequestValidator()
        {
            RuleFor(r => r.RequestId)
                .NotEmpty()
                .NotNull();

            When(w => w.Action == FriendRequestAction.Accpet, () =>
            {
                RuleFor(r => r.RemarkName)
                .NotEmpty()
                .NotNull();
            });
        }
    }
}