TwoFactor/TwoFactorLoginRequestValidator.cs

Validates 2FA login request fields, ensuring token and code meet format requirements.

// Source: https://github.com/fpindej/netrock | License: MIT | Copyright 2025-2026 Filip Pindej
// Provided via justclaw.it.com; keep this notice with the code.
using FluentValidation;

namespace MyProject.WebApi.Features.Authentication.Dtos.TwoFactor;

/// <summary>
/// Validates <see cref="TwoFactorLoginRequest"/> fields at runtime.
/// </summary>
public class TwoFactorLoginRequestValidator : AbstractValidator<TwoFactorLoginRequest>
{
    /// <summary>
    /// Initializes validation rules for 2FA login requests.
    /// </summary>
    public TwoFactorLoginRequestValidator()
    {
        RuleFor(x => x.ChallengeToken)
            .NotEmpty()
            .MaximumLength(100);

        RuleFor(x => x.Code)
            .NotEmpty()
            .Length(6)
            .Matches(@"^\d{6}$").WithM

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