astral-api/Astral.Services/Validators/AuthenticateUserValidator.cs

// <copyright file="AuthenticateUserValidator.cs" company="alveus.dev">
// Copyright (c) alveus.dev. All rights reserved. Licensed under the MIT License.
// </copyright>

using Astral.Services.Dtos;
using FluentValidation;
using Injectio.Attributes;

namespace Astral.Services.Validators;

/// <summary>
/// Validation for <see cref="PasswordAuthenticateDto" />.
/// </summary>
[RegisterScoped]
public class AuthenticateUserValidator : AbstractValidator<PasswordAuthenticateDto>
{
    private const int MinimumUsernameLength = 4;

    /// <summary>
    /// Initializes a new instance of the <see cref="AuthenticateUserValidator" /> class.
    /// </summary>
    public AuthenticateUserValidator()
    {
        RuleFor(dto => dto.Username).NotEmpty().WithMessage("Username must be provided")
            .MinimumLength(MinimumUsernameLength)
            .WithMessage("Username must be a minimum of " + MinimumUsernameLength + " characters")
            .Matches(@"^[A-Za-z0-9._-]+$")
            .WithMessage("Username can only contain letters, numbers, hyphens, dashes and periods.");

        RuleFor(dto => dto.Password).NotEmpty().WithMessage("Password must be provided");
    }
}