Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

BlazorWebAssemblyVisaApiClient/Validation/VisaApplications/Validators/PastVisitModelValidator.cs

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+using BlazorWebAssemblyVisaApiClient.Infrastructure.Services.DateTimeProvider;
+using FluentValidation;
+using VisaApiClient;
+
+namespace BlazorWebAssemblyVisaApiClient.Validation.VisaApplications.Validators;
+
+public class PastVisitModelValidator : AbstractValidator<PastVisitModel>
+{
+    public PastVisitModelValidator(IDateTimeProvider dateTimeProvider)
+    {
+        RuleFor(v => v.StartDate)
+            .NotEmpty()
+            .WithMessage("Start date of past visit can not be empty")
+            .LessThan(v => v.EndDate)
+            .WithMessage("Start date of past visit must be earlier than end date")
+            .LessThan(dateTimeProvider.Now())
+            .WithMessage("Start date of past visit must be in past");
+
+        RuleFor(v => v.EndDate)
+            .NotEmpty()
+            .WithMessage("End date of past visit can not be empty");
+
+        RuleFor(v => v.DestinationCountry)
+            .NotEmpty()
+            .WithMessage("Destination Country of past visit can not be null")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Destination Country of past visit can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.CountryNameLength)
+            .WithMessage($"Destination Country of past visit length must be less than {ConfigurationConstraints.CountryNameLength}");
+    }
+}