Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

BlazorWebAssemblyVisaApiClient/Validation/VisaApplications/Validators/PastVisaModelValidator.cs

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+using BlazorWebAssemblyVisaApiClient.Infrastructure.Services.DateTimeProvider;
+using FluentValidation;
+using VisaApiClient;
+
+namespace BlazorWebAssemblyVisaApiClient.Validation.VisaApplications.Validators;
+
+public class PastVisaModelValidator : AbstractValidator<PastVisaModel>
+{
+    public PastVisaModelValidator(IDateTimeProvider dateTimeProvider)
+    {
+        RuleFor(v => v.ExpirationDate)
+            .NotEmpty()
+            .WithMessage("Expiration date of past visa can not be empty")
+            .GreaterThan(v => v.IssueDate)
+            .WithMessage("Past visa expiration date can not be earlier than issue date");
+
+        RuleFor(v => v.IssueDate)
+            .NotEmpty()
+            .WithMessage("Issue date of past visa can not be empty")
+            .LessThan(dateTimeProvider.Now())
+            .WithMessage("Issue date of past visa must be in past");
+
+        RuleFor(v => v.Name)
+            .NotEmpty()
+            .WithMessage("Name of past visa can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Name of past visa can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.VisaNameLength)
+            .WithMessage($"Past visa name length must be less than {ConfigurationConstraints.VisaNameLength}");
+    }
+}