using FluentValidation;

namespace Mizuki.Validators;

/// <summary>
/// The validator for uploaded form files.
/// </summary>
public class FormFileValidator : AbstractValidator<IFormFile>
{
    /// <summary>
    /// Constructs the rule set for the FormFileValidator.
    /// </summary>
    public FormFileValidator()
    {
        const int MiB = 1024 * 1024;

        RuleFor(f => f.Length)
            .LessThan(50 * MiB);

        RuleFor(f => f.FileName)
            .NotEmpty();

        RuleFor(f => f.FileName)
            .Matches(@"^(?!\s)(?!.*\s$)[^<>:""/\\|?*\x00-\x1F]+\.(?!\.)[^<>:""/\\|?*\x00-\x1F]{1,4}$|^(?!\s)(?!.*\s$)[^<>:""/\\|?*\x00-\x1F]+$");
    }
}