Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

ApplicationLayer/Services/Applicants/Models/Validation/NameModelValidator.cs

@@ -0,0 +1,32 @@
+using Domains;
+using FluentValidation;
+
+namespace ApplicationLayer.Services.Applicants.Models.Validation;
+
+public class NameModelValidator : AbstractValidator<NameModel>
+{
+    public NameModelValidator()
+    {
+        RuleFor(m => m.FirstName)
+            .NotEmpty()
+            .WithMessage("First Name can not be empty")
+            .Matches(Constants.EnglishWordRegex)
+            .WithMessage("First name must be in english characters")
+            .MaximumLength(ConfigurationConstraints.NameLength)
+            .WithMessage($"First Name length must be less than {ConfigurationConstraints.NameLength}");
+
+        RuleFor(m => m.Surname)
+            .NotEmpty()
+            .WithMessage("Surname can not be empty")
+            .Matches(Constants.EnglishWordRegex)
+            .WithMessage("Surname must be in english characters")
+            .MaximumLength(ConfigurationConstraints.NameLength)
+            .WithMessage($"Surname length must be less than {ConfigurationConstraints.NameLength}");
+
+        RuleFor(m => m.Patronymic)
+            .Matches(Constants.EnglishWordRegex)
+            .WithMessage("Patronymic must be in english characters")
+            .MaximumLength(ConfigurationConstraints.NameLength)
+            .WithMessage($"Patronymic length must be less than {ConfigurationConstraints.NameLength}");
+    }
+}

ApplicationLayer/Services/Applicants/Models/Validation/PassportModelValidator.cs

@@ -0,0 +1,39 @@
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using Domains;
+using FluentValidation;
+
+namespace ApplicationLayer.Services.Applicants.Models.Validation;
+
+public class PassportModelValidator : AbstractValidator<PassportModel>
+{
+    public PassportModelValidator(IDateTimeProvider dateTimeProvider)
+    {
+        RuleFor(r => r.Issuer)
+            .NotEmpty()
+            .WithMessage("Passport issuer can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Passport issuer field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.IssuerNameLength)
+            .WithMessage($"Passport issuer length must be less than {ConfigurationConstraints.IssuerNameLength}");
+
+        RuleFor(r => r.Number)
+            .NotEmpty()
+            .WithMessage("Passport number can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Passport number field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.PassportNumberLength)
+            .WithMessage($"Passport number length must be less than {ConfigurationConstraints.PassportNumberLength}");
+
+        RuleFor(r => r.ExpirationDate)
+            .NotEmpty()
+            .WithMessage("Passport expiration date can not be empty")
+            .GreaterThan(dateTimeProvider.Now())
+            .WithMessage("Can not approve visa for applicants with expired passport");
+
+        RuleFor(r => r.IssueDate)
+            .NotEmpty()
+            .WithMessage("Passport issue date can not be empty")
+            .LessThanOrEqualTo(dateTimeProvider.Now())
+            .WithMessage("Passport issue date must be in past");
+    }
+}

ApplicationLayer/Services/Applicants/Models/Validation/PlaceOfWorkModelValidator.cs

@@ -0,0 +1,66 @@
+using Domains;
+using FluentValidation;
+
+namespace ApplicationLayer.Services.Applicants.Models.Validation;
+
+public class PlaceOfWorkModelValidator : AbstractValidator<PlaceOfWorkModel>
+{
+    public PlaceOfWorkModelValidator()
+    {
+        RuleFor(p => p.Name)
+            .NotEmpty()
+            .WithMessage("Place of work name can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Place of work name field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.PlaceOfWorkNameLength)
+            .WithMessage($"Place of work name length must be less than {ConfigurationConstraints.PlaceOfWorkNameLength}");
+
+        RuleFor(p => p.PhoneNum)
+            .NotEmpty()
+            .WithMessage("Place of work phone number can not be empty")
+            .Matches(Constants.PhoneNumRegex)
+            .WithMessage("Place of work phone number field must be valid")
+            .MaximumLength(ConfigurationConstraints.PhoneNumberLength)
+            .WithMessage(
+                $"Phone number length must be in range from {ConfigurationConstraints.PhoneNumberMinLength} to {ConfigurationConstraints.PhoneNumberLength}")
+            .MinimumLength(ConfigurationConstraints.PhoneNumberMinLength)
+            .WithMessage(
+                $"Phone number length must be in range from {ConfigurationConstraints.PhoneNumberMinLength} to {ConfigurationConstraints.PhoneNumberLength}");
+
+        RuleFor(p => p.Address)
+            .NotEmpty()
+            .WithMessage("Place of work address can not be empty");
+
+        RuleFor(p => p.Address.Country)
+            .NotEmpty()
+            .WithMessage("Country name of place of work can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Place of work Country field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.CountryNameLength)
+            .WithMessage($"Country name of place of work length must be less than {ConfigurationConstraints.CountryNameLength}");
+
+        RuleFor(p => p.Address.City)
+            .NotEmpty()
+            .WithMessage("City name of place of work can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Place of work City field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.CityNameLength)
+            .WithMessage($"City name of place of work length must be less than {ConfigurationConstraints.CityNameLength}");
+
+        RuleFor(p => p.Address.Street)
+            .NotEmpty()
+            .WithMessage("Street name of place of work can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Place of work Street field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.StreetNameLength)
+            .WithMessage($"Street name of place of work length must be less than {ConfigurationConstraints.StreetNameLength}");
+
+        RuleFor(p => p.Address.Building)
+            .NotEmpty()
+            .WithMessage("Building of place of work can not be empty")
+            .Matches(Constants.EnglishPhraseRegex)
+            .WithMessage("Place of work building field can contain only english letters, digits and special symbols")
+            .MaximumLength(ConfigurationConstraints.BuildingNumberLength)
+            .WithMessage($"Building of place of work length must be less than {ConfigurationConstraints.BuildingNumberLength}");
+    }
+}