смена public на internal

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/IClientBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface IClientBusinessLogicContract
+internal interface IClientBusinessLogicContract
 {
     List<ClientDataModel> GetAllClients();
 

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/IEmployeeBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface IEmployeeBusinessLogicContract
+internal interface IEmployeeBusinessLogicContract
 {
     List<EmployeeDataModel> GetAllEmployees(bool onlyActive = true);
 

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/IPostBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface IPostBusinessLogicContract
+internal interface IPostBusinessLogicContract
 {
     List<PostDataModel> GetAllPosts();
 

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/IReportContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BusinessLogicContracts;
 
-public interface IReportContract
+internal interface IReportContract
 {
     Task<List<TourAndTourHistoryDataModel>> GetDataToursHistoryAsync(CancellationToken ct);
     Task<Stream> CreateDocumentToursHistoryAsync(CancellationToken ct);

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/ISalaryBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface ISalaryBusinessLogicContract
+internal interface ISalaryBusinessLogicContract
 {
     List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate);
 

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/ISaleBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface ISaleBusinessLogicContract
+internal interface ISaleBusinessLogicContract
 {
     List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
 

MagicCarpetProject/MagicCarpetContracts/BusinessLogicContracts/ITourBusinessLogicContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.BuisnessLogicContracts;
 
-public interface ITourBusinessLogicContract
+internal interface ITourBusinessLogicContract
 {
     List<TourDataModel> GetAllTours();
 

MagicCarpetProject/MagicCarpetContracts/DataModels/ClientDataModel.cs

@@ -9,10 +9,12 @@ using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using ValidationException = MagicCarpetContracts.Exceptions.ValidationException;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class ClientDataModel(string id, string fIO, string phoneNumber, double discountSize) : IValidation
+internal class ClientDataModel(string id, string fIO, string phoneNumber, double discountSize) : IValidation
 {
     public string Id { get; private set; } = id;
 
@@ -22,21 +24,21 @@ public class ClientDataModel(string id, string fIO, string phoneNumber, double d
 
     public double DiscountSize { get; private set; } = discountSize;
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (Id.IsEmpty())
-            throw new ValidationException("Field Id is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "Id"));
 
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "Id"));
 
         if (FIO.IsEmpty())
-            throw new ValidationException("Field FIO is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "FIO"));
 
         if (PhoneNumber.IsEmpty())
-            throw new ValidationException("Field PhoneNumber is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "PhoneNumber"));
 
         if (!Regex.IsMatch(PhoneNumber, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$"))
-            throw new ValidationException("Field PhoneNumber is not a phone number");
+            throw new ValidationException(localizer["ValidationExceptionIncorrectPhoneNumber"]);
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/EmployeeDataModel.cs

@@ -1,7 +1,9 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
 using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,7 +13,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class EmployeeDataModel(string id, string fio, string email, string postId, DateTime birthDate, DateTime employmentDate, bool isDeleted) : IValidation
+internal class EmployeeDataModel(string id, string fio, string email, string postId, DateTime birthDate, DateTime employmentDate, bool isDeleted) : IValidation
 {
     private readonly PostDataModel? _post;
 
@@ -40,16 +42,16 @@ public class EmployeeDataModel(string id, string fio, string email, string postI
     public EmployeeDataModel(string id, string fio, string email, string postId, DateTime birthDate, 
         DateTime employmentDate) : this(id, fio, email, postId, birthDate, employmentDate, false) { }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (Id.IsEmpty())
-            throw new ValidationException("Field Id is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "Id"));
 
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "Id"));
 
         if (FIO.IsEmpty())
-            throw new ValidationException("Field FIO is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "FIO"));
 
         if (Email.IsEmpty())
             throw new ValidationException("Field Email is empty");
@@ -58,18 +60,20 @@ public class EmployeeDataModel(string id, string fio, string email, string postI
             throw new ValidationException("Field Email is not a valid email address");
 
         if (PostId.IsEmpty())
-            throw new ValidationException("Field PostId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "PostId"));
 
         if (!PostId.IsGuid())
-            throw new ValidationException("The value in the field PostId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "PostId"));
 
         if (BirthDate.Date > DateTime.Now.AddYears(-18).Date)
-            throw new ValidationException($"Only adults can be hired (BirthDate = {BirthDate.ToShortDateString()})");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageMinorsBirthDate"], BirthDate.ToShortDateString()));
 
         if (EmploymentDate.Date < BirthDate.Date)
-            throw new ValidationException("The date of employment cannot be less than the date of birth");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmploymentDateAndBirthDate"],
+                EmploymentDate.ToShortDateString(), BirthDate.ToShortDateString()));
 
         if ((EmploymentDate - BirthDate).TotalDays / 365 < 18)
-            throw new ValidationException($"Only adults can be hired (EmploymentDate - {EmploymentDate.ToShortDateString()}, BirthDate - {BirthDate.ToShortDateString()})");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageMinorsEmploymentDate"],
+                EmploymentDate.ToShortDateString(), BirthDate.ToShortDateString()));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/PostDataModel.cs

@@ -11,10 +11,12 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class PostDataModel(string postId, string postName, PostType postType, PostConfiguration configuration) : IValidation
+internal class PostDataModel(string postId, string postName, PostType postType, PostConfiguration configuration) : IValidation
 {
     public string Id { get; private set; } = postId;
     public string PostName { get; private set; } = postName;
@@ -35,19 +37,24 @@ public class PostDataModel(string postId, string postName, PostType postType, Po
         }
     }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (Id.IsEmpty())
-            throw new ValidationException("Field Id is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "Id"));
+
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "Id"));
+
         if (PostName.IsEmpty())
-            throw new ValidationException("Field PostName is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "PostName"));
+
         if (PostType == PostType.None)
-            throw new ValidationException("Field PostType is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "PostType"));
+
         if (ConfigurationModel is null)
-            throw new ValidationException("Field ConfigurationModel is not initialized");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotInitialized"], "ConfigurationModel"));
+
         if (ConfigurationModel!.Rate <= 0)
-            throw new ValidationException("Field Rate is less or equal zero");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Rate"));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/SalaryDataModel.cs

@@ -1,6 +1,8 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,7 +11,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class SalaryDataModel(string employeeId, DateTime salaryDate, double employeeSalary) : IValidation
+internal class SalaryDataModel(string employeeId, DateTime salaryDate, double employeeSalary) : IValidation
 {
     private readonly EmployeeDataModel? _employee;
     public string EmployeeId { get; private set; } = employeeId;
@@ -25,15 +27,15 @@ public class SalaryDataModel(string employeeId, DateTime salaryDate, double empl
         _employee = employee;
     }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (EmployeeId.IsEmpty())
-            throw new ValidationException("Field EmployeeId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "EmployeeId"));
 
         if (!EmployeeId.IsGuid())
-            throw new ValidationException("The value in the field EmployeeId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "EmployeeId"));
 
         if (Salary <= 0)
-            throw new ValidationException("Field Salary is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Salary"));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/SaleDataModel.cs

@@ -2,6 +2,8 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -10,7 +12,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class SaleDataModel : IValidation
+internal class SaleDataModel : IValidation
 {
     private readonly ClientDataModel? _client;
 
@@ -83,27 +85,32 @@ public class SaleDataModel : IValidation
     public SaleDataModel(string id, string employeeId, string? clientId, int discountType, 
         List<SaleTourDataModel> tours) : this(id, employeeId, clientId, (DiscountType)discountType, false, tours) { }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (Id.IsEmpty())
-            throw new ValidationException("Field Id is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "Id"));
 
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "Id"));
 
         if (EmployeeId.IsEmpty())
-            throw new ValidationException("Field EmployeeId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "WorkerId"));
 
         if (!EmployeeId.IsGuid())
-            throw new ValidationException("The value in the field EmployeeId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "WorkerId"));
 
         if (!ClientId?.IsGuid() ?? !ClientId?.IsEmpty() ?? false)
-            throw new ValidationException("The value in the field BuyerId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "BuyerId"));
 
         if (Sum <= 0)
-            throw new ValidationException("Field Sum is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Sum"));
 
-        if ((Tours?.Count ?? 0) == 0)
+        if (Tours is null)
-            throw new ValidationException("The sale must include tours");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotInitialized"], "Tours"));
+
+        if (Tours.Count == 0)
+            throw new ValidationException(localizer["ValidationExceptionMessageNoProductsInSale"]);
+
+        Tours.ForEach(x => x.Validate(localizer));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/SaleTourDataModel.cs

@@ -1,6 +1,8 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -10,7 +12,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class SaleTourDataModel(string saleId, string tourId, int count, double price) : IValidation
+internal class SaleTourDataModel(string saleId, string tourId, int count, double price) : IValidation
 {
     private readonly TourDataModel? _tour;
 
@@ -29,24 +31,24 @@ public class SaleTourDataModel(string saleId, string tourId, int count, double p
         _tour = tour;
     }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (SaleId.IsEmpty())
-            throw new ValidationException("Field SaleId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "SaleId"));
 
         if (!SaleId.IsGuid())
-            throw new ValidationException("The value in the field SaleId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "SaleId"));
 
         if (TourId.IsEmpty())
-            throw new ValidationException("Field ProductId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "ITourIdd"));
 
         if (!TourId.IsGuid())
-            throw new ValidationException("The value in the field ProductId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "TourId"));
 
         if (Count <= 0)
-            throw new ValidationException("Field Count is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Count"));
 
         if (Price <= 0)
-            throw new ValidationException("Field Price is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Price"));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/TourDataModel.cs

@@ -2,6 +2,8 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -12,7 +14,7 @@ using System.Xml.Linq;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class TourDataModel(string id, string tourName, string tourCountry, double price, TourType tourType) : IValidation
+internal class TourDataModel(string id, string tourName, string tourCountry, double price, TourType tourType) : IValidation
 {
     public string Id { get; private set; } = id;
     public string TourName { get; private set; } = tourName;
@@ -20,19 +22,19 @@ public class TourDataModel(string id, string tourName, string tourCountry, doubl
     public double Price { get; private set; } = price;
     public TourType TourType { get; private set; } = tourType;
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (Id.IsEmpty())
-            throw new ValidationException("Field Id is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "Id"));
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "Id"));
         if (TourName.IsEmpty())
-            throw new ValidationException("Field TourName is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "TourName"));
         if (TourCountry.IsEmpty())
-            throw new ValidationException("Field TourCountry is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "TourCountry"));
         if (Price <= 0)
-            throw new ValidationException("Field Price is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "Price"));
         if (TourType == TourType.None)
-            throw new ValidationException("Field Type is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "TourType"));
     }
 }

MagicCarpetProject/MagicCarpetContracts/DataModels/TourHistoryDataModel.cs

@@ -1,6 +1,8 @@
 using MagicCarpetContracts.Exceptions;
 using MagicCarpetContracts.Extensions;
 using MagicCarpetContracts.Infrastructure;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,7 +11,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class TourHistoryDataModel(string tourId, double oldPrice) : IValidation
+internal class TourHistoryDataModel(string tourId, double oldPrice) : IValidation
 {
     private readonly TourDataModel? _tour;
 
@@ -27,15 +29,15 @@ public class TourHistoryDataModel(string tourId, double oldPrice) : IValidation
         _tour = tour;
     }
 
-    public void Validate()
+    public void Validate(IStringLocalizer<Messages> localizer)
     {
         if (TourId.IsEmpty())
-            throw new ValidationException("Field TourId is empty");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageEmptyField"], "TourId"));
 
         if (!TourId.IsGuid())
-            throw new ValidationException("The value in the field TourId is not a unique identifier");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageNotAId"], "TourId"));
 
         if (OldPrice <= 0)
-            throw new ValidationException("Field OldPrice is less than or equal to 0");
+            throw new ValidationException(string.Format(localizer["ValidationExceptionMessageLessOrEqualZero"], "OldPrice"));
     }
 }

MagicCarpetProject/MagicCarpetContracts/Exceptions/ElementDeletedException.cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,7 +8,6 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Exceptions;
 
-public class ElementDeletedException : Exception
+internal class ElementDeletedException(string id, IStringLocalizer<Messages> localizer) 
-{
+    : Exception(string.Format(localizer["ElementDeletedExceptionMessage"], id))
-    public ElementDeletedException(string id) : base($"Cannot modify a deleted item (id: {id})") { }
+{ }
-}

MagicCarpetProject/MagicCarpetContracts/Exceptions/ElementExistsException.cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,15 +8,10 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Exceptions;
 
-public class ElementExistsException : Exception
+internal class ElementExistsException(string paramName, string paramValue, IStringLocalizer<Messages> localizer) :
+    Exception(string.Format(localizer["ElementExistsExceptionMessage"], paramValue, paramName))
 {
-    public string ParamName { get; private set; }
+    public string ParamName { get; private set; } = paramName;
 
-    public string ParamValue { get; private set; }
+    public string ParamValue { get; private set; } = paramValue;
-
-    public ElementExistsException(string paramName, string paramValue) : base($"There is already an element with value{paramValue} of parameter {paramName}")
-    {
-        ParamName = paramName;
-        ParamValue = paramValue;
-    }
 }

MagicCarpetProject/MagicCarpetContracts/Exceptions/ElementNotFoundException .cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,12 +8,8 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Exceptions;
 
-public class ElementNotFoundException : Exception
+internal class ElementNotFoundException(string value, IStringLocalizer<Messages> localizer) :
+    Exception(string.Format(localizer["ElementNotFoundExceptionMessage"], value))
 {
-    public string Value { get; private set; }
+    public string Value { get; private set; } = value;
-
-    public ElementNotFoundException(string value) : base($"Element not found at value = {value}")
-    {
-        Value = value;
-    }
 }

MagicCarpetProject/MagicCarpetContracts/Exceptions/IncorrectDatesException .cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,8 +8,6 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Exceptions;
 
-public class IncorrectDatesException : Exception
+internal class IncorrectDatesException(DateTime start, DateTime end, IStringLocalizer<Messages> localizer) :
-{
+    Exception(string.Format(localizer["IncorrectDatesExceptionMessage"], start.ToShortDateString(), end.ToShortDateString()))
-    public IncorrectDatesException(DateTime start, DateTime end) : base($"The end date must be later than the start date.. StartDate: " +
+{ }
-        $"{start:dd.MM.YYYY}. EndDate: {end:dd.MM.YYYY}") { }
-}

MagicCarpetProject/MagicCarpetContracts/Exceptions/NullListException.cs

@@ -1,12 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace MagicCarpetContracts.Exceptions;
-
-public class NullListException : Exception
-{
-    public NullListException() : base("The returned list is null") { }
-}

MagicCarpetProject/MagicCarpetContracts/Exceptions/StorageException .cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,7 +8,5 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Exceptions;
 
-public class StorageException : Exception
+internal class StorageException(Exception ex, IStringLocalizer<Messages> localizer) : Exception(string.Format(localizer["StorageExceptionMessage"], ex.Message), ex)
-{
+{ }
-    public StorageException(Exception ex) : base($"Error while working in storage: {ex.Message}", ex) { }
-}

MagicCarpetProject/MagicCarpetContracts/Infrastructure/IValidation.cs

@@ -1,4 +1,6 @@
-using System;
+using MagicCarpetContracts.Resources;
+using Microsoft.Extensions.Localization;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,8 +8,8 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.Infrastructure;
 
-public interface IValidation
+internal interface IValidation
 {
-    void Validate();
+    void Validate(IStringLocalizer<Messages> localizer);
 }
 

MagicCarpetProject/MagicCarpetContracts/MagicCarpetContracts.csproj

@@ -10,6 +10,29 @@
     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.3.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.3.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
+    <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="9.0.4" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Update="Resources\Messages.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Messages.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="Resources\Messages.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Messages.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+	<ItemGroup>
+		<InternalsVisibleTo Include="MagicCarpetDatabase" />
+		<InternalsVisibleTo Include="MagicCarpetTests" />
+		<InternalsVisibleTo Include="MagicCarpetBusinessLogic" />
+		<InternalsVisibleTo Include="MagicCarpetWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
 </Project>

MagicCarpetProject/MagicCarpetContracts/Resources/Messages.Designer.cs

@@ -0,0 +1,225 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Этот код создан программой.
+//     Исполняемая версия:4.0.30319.42000
+//
+//     Изменения в этом файле могут привести к неправильной работе и будут потеряны в случае
+//     повторной генерации кода.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace MagicCarpetContracts.Resources {
+    using System;
+    
+    
+    /// <summary>
+    ///   Класс ресурса со строгой типизацией для поиска локализованных строк и т.д.
+    /// </summary>
+    // Этот класс создан автоматически классом StronglyTypedResourceBuilder
+    // с помощью такого средства, как ResGen или Visual Studio.
+    // Чтобы добавить или удалить член, измените файл .ResX и снова запустите ResGen
+    // с параметром /str или перестройте свой проект VS.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Messages {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Messages() {
+        }
+        
+        /// <summary>
+        ///   Возвращает кэшированный экземпляр ResourceManager, использованный этим классом.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("MagicCarpetContracts.Resources.Messages", typeof(Messages).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Перезаписывает свойство CurrentUICulture текущего потока для всех
+        ///   обращений к ресурсу с помощью этого класса ресурса со строгой типизацией.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Нельзя изменить удаленный элемент (идентификатор: {0}).
+        /// </summary>
+        internal static string ElementDeletedExceptionMessage {
+            get {
+                return ResourceManager.GetString("ElementDeletedExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Уже существует элемент со значением {0} параметра {1}.
+        /// </summary>
+        internal static string ElementExistsExceptionMessage {
+            get {
+                return ResourceManager.GetString("ElementExistsExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Элемент не найден по значению = {0}.
+        /// </summary>
+        internal static string ElementNotFoundExceptionMessage {
+            get {
+                return ResourceManager.GetString("ElementNotFoundExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Дата окончания должна быть позже даты начала. Дата начала: {0}. ​​Дата окончания: {1}.
+        /// </summary>
+        internal static string IncorrectDatesExceptionMessage {
+            get {
+                return ResourceManager.GetString("IncorrectDatesExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Недостаточно данных для обработки: {0}.
+        /// </summary>
+        internal static string NotEnoughDataToProcessExceptionMessage {
+            get {
+                return ResourceManager.GetString("NotEnoughDataToProcessExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Не найдены данные.
+        /// </summary>
+        internal static string NotFoundDataMessage {
+            get {
+                return ResourceManager.GetString("NotFoundDataMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Ошибка при работе в хранилище: {0}.
+        /// </summary>
+        internal static string StorageExceptionMessage {
+            get {
+                return ResourceManager.GetString("StorageExceptionMessage", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Дата трудоустройства не может быть раньше даты рождения ({0}, {1}).
+        /// </summary>
+        internal static string ValidationExceptionMessageEmploymentDateAndBirthDate {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageEmploymentDateAndBirthDate", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Значение в поле {0} пусто.
+        /// </summary>
+        internal static string ValidationExceptionMessageEmptyField {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageEmptyField", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Некорректный формат ФИО.
+        /// </summary>
+        internal static string ValidationExceptionMessageIncorrectFIO {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageIncorrectFIO", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Значение в поле Телефонный номер не является телефонным номером.
+        /// </summary>
+        internal static string ValidationExceptionMessageIncorrectPhoneNumber {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageIncorrectPhoneNumber", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Значение в поле {0} меньше или равно 0.
+        /// </summary>
+        internal static string ValidationExceptionMessageLessOrEqualZero {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageLessOrEqualZero", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Несовершеннолетние не могут быть приняты на работу (Дата рождения: {0}).
+        /// </summary>
+        internal static string ValidationExceptionMessageMinorsBirthDate {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageMinorsBirthDate", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Несовершеннолетние не могут быть приняты на работу (Дата трудоустройства: {0}, Дата рождения: {1}).
+        /// </summary>
+        internal static string ValidationExceptionMessageMinorsEmploymentDate {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageMinorsEmploymentDate", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Отсутствуют компоненты.
+        /// </summary>
+        internal static string ValidationExceptionMessageNoComponents {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageNoComponents", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на В продаже должен быть хотя бы один товар.
+        /// </summary>
+        internal static string ValidationExceptionMessageNoProductsInSale {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageNoProductsInSale", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Значение в поле {0} не является типом уникального идентификатора.
+        /// </summary>
+        internal static string ValidationExceptionMessageNotAId {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageNotAId", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Ищет локализованную строку, похожую на Значение в поле {0} не проинициализировано.
+        /// </summary>
+        internal static string ValidationExceptionMessageNotInitialized {
+            get {
+                return ResourceManager.GetString("ValidationExceptionMessageNotInitialized", resourceCulture);
+            }
+        }
+    }
+}

MagicCarpetProject/MagicCarpetContracts/Resources/Messages.resx

@@ -0,0 +1,174 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="ElementDeletedExceptionMessage" xml:space="preserve">
+    <value>Нельзя изменить удаленный элемент (идентификатор: {0})</value>
+  </data>
+  <data name="ElementExistsExceptionMessage" xml:space="preserve">
+    <value>Уже существует элемент со значением {0} параметра {1}</value>
+  </data>
+  <data name="ElementNotFoundExceptionMessage" xml:space="preserve">
+    <value>Элемент не найден по значению = {0}</value>
+  </data>
+  <data name="IncorrectDatesExceptionMessage" xml:space="preserve">
+    <value>Дата окончания должна быть позже даты начала. Дата начала: {0}. ​​Дата окончания: {1}</value>
+  </data>
+  <data name="NotEnoughDataToProcessExceptionMessage" xml:space="preserve">
+    <value>Недостаточно данных для обработки: {0}</value>
+  </data>
+  <data name="NotFoundDataMessage" xml:space="preserve">
+    <value>Не найдены данные</value>
+  </data>
+  <data name="StorageExceptionMessage" xml:space="preserve">
+    <value>Ошибка при работе в хранилище: {0}</value>
+  </data>
+  <data name="ValidationExceptionMessageEmploymentDateAndBirthDate" xml:space="preserve">
+    <value>Дата трудоустройства не может быть раньше даты рождения ({0}, {1})</value>
+  </data>
+  <data name="ValidationExceptionMessageEmptyField" xml:space="preserve">
+    <value>Значение в поле {0} пусто</value>
+  </data>
+  <data name="ValidationExceptionMessageIncorrectFIO" xml:space="preserve">
+    <value>Некорректный формат ФИО</value>
+  </data>
+  <data name="ValidationExceptionMessageIncorrectPhoneNumber" xml:space="preserve">
+    <value>Значение в поле Телефонный номер не является телефонным номером</value>
+  </data>
+  <data name="ValidationExceptionMessageLessOrEqualZero" xml:space="preserve">
+    <value>Значение в поле {0} меньше или равно 0</value>
+  </data>
+  <data name="ValidationExceptionMessageMinorsBirthDate" xml:space="preserve">
+    <value>Несовершеннолетние не могут быть приняты на работу (Дата рождения: {0})</value>
+  </data>
+  <data name="ValidationExceptionMessageMinorsEmploymentDate" xml:space="preserve">
+    <value>Несовершеннолетние не могут быть приняты на работу (Дата трудоустройства: {0}, Дата рождения: {1})</value>
+  </data>
+  <data name="ValidationExceptionMessageNoComponents" xml:space="preserve">
+    <value>Отсутствуют компоненты</value>
+  </data>
+  <data name="ValidationExceptionMessageNoProductsInSale" xml:space="preserve">
+    <value>В продаже должен быть хотя бы один товар</value>
+  </data>
+  <data name="ValidationExceptionMessageNotAId" xml:space="preserve">
+    <value>Значение в поле {0} не является типом уникального идентификатора</value>
+  </data>
+  <data name="ValidationExceptionMessageNotInitialized" xml:space="preserve">
+    <value>Значение в поле {0} не проинициализировано</value>
+  </data>
+</root>

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/IClientStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface IClientStorageContract
+internal interface IClientStorageContract
 {
     List<ClientDataModel> GetList();
 

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/IEmployeeStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface IEmployeeStorageContract
+internal interface IEmployeeStorageContract
 {
     List<EmployeeDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null,
         DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null);

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/IPostStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface IPostStorageContract
+internal interface IPostStorageContract
 {
     List<PostDataModel> GetList();
     List<PostDataModel> GetPostWithHistory(string postId);

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/ISalaryStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface ISalaryStorageContract
+internal interface ISalaryStorageContract
 {
     List<SalaryDataModel> GetList(DateTime? startDate, DateTime? endDate, string? employeeId = null);
 

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/ISaleStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface ISaleStorageContract
+internal interface ISaleStorageContract
 {
     List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? employeeId = null, 
         string? clientId = null, string? tourId = null);

MagicCarpetProject/MagicCarpetContracts/StoragesContracts/ITourStorageContract.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetContracts.StoragesContracts;
 
-public interface ITourStorageContract
+internal interface ITourStorageContract
 {
     List<TourDataModel> GetList();
     List<TourHistoryDataModel> GetHistoryByTourId(string tourId);

MagicCarpetProject/MagicCarpetDatabase/Implementations/ClientStorageContract.cs

@@ -1,9 +1,11 @@
 using AutoMapper;
 using MagicCarpetContracts.DataModels;
 using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Resources;
 using MagicCarpetContracts.StoragesContracts;
 using MagicCarpetDatabase.Models;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Localization;
 using Npgsql;
 using System;
 using System.Collections.Generic;
@@ -13,11 +15,12 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetDatabase.Implementations;
 
-public class ClientStorageContract : IClientStorageContract
+internal class ClientStorageContract : IClientStorageContract
 {
     private readonly MagicCarpetDbContext _dbContext;
     private readonly Mapper _mapper;
-    public ClientStorageContract(MagicCarpetDbContext magicCarpetDbContext)
+    private readonly IStringLocalizer<Messages> _localizer;
+    public ClientStorageContract(MagicCarpetDbContext magicCarpetDbContext, IStringLocalizer<Messages> localizer)
     {
         _dbContext = magicCarpetDbContext;
         var config = new MapperConfiguration(cfg =>
@@ -25,6 +28,7 @@ public class ClientStorageContract : IClientStorageContract
             cfg.AddMaps(typeof(MagicCarpetDbContext).Assembly);
         });
         _mapper = new Mapper(config);
+        _localizer = localizer;
     }
     public List<ClientDataModel> GetList()
     {
@@ -35,7 +39,7 @@ public class ClientStorageContract : IClientStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public ClientDataModel? GetElementById(string id)
@@ -47,7 +51,7 @@ public class ClientStorageContract : IClientStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public ClientDataModel? GetElementByFIO(string fio)
@@ -59,7 +63,7 @@ public class ClientStorageContract : IClientStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public ClientDataModel? GetElementByPhoneNumber(string phoneNumber)
@@ -71,7 +75,7 @@ public class ClientStorageContract : IClientStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public void AddElement(ClientDataModel clientDataModel)
@@ -84,24 +88,24 @@ public class ClientStorageContract : IClientStorageContract
         catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
         {
             _dbContext.ChangeTracker.Clear();
-            throw new ElementExistsException("Id", clientDataModel.Id);
+            throw new ElementExistsException("Id", clientDataModel.Id, _localizer);
         }
         catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Clients_PhoneNumber" })
         {
             _dbContext.ChangeTracker.Clear();
-            throw new ElementExistsException("PhoneNumber", clientDataModel.PhoneNumber);
+            throw new ElementExistsException("PhoneNumber", clientDataModel.PhoneNumber, _localizer);
         }
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public void UpdElement(ClientDataModel clientDataModel)
     {
         try
         {
-            var element = GetClientById(clientDataModel.Id) ?? throw new ElementNotFoundException(clientDataModel.Id);
+            var element = GetClientById(clientDataModel.Id) ?? throw new ElementNotFoundException(clientDataModel.Id, _localizer);
             _dbContext.Clients.Update(_mapper.Map(clientDataModel, element));
             _dbContext.SaveChanges();
         }
@@ -113,19 +117,19 @@ public class ClientStorageContract : IClientStorageContract
         catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Clients_PhoneNumber" })
         {
             _dbContext.ChangeTracker.Clear();
-            throw new ElementExistsException("PhoneNumber", clientDataModel.PhoneNumber);
+            throw new ElementExistsException("PhoneNumber", clientDataModel.PhoneNumber, _localizer);
         }
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     public void DelElement(string id)
     {
         try
         {
-            var element = GetClientById(id) ?? throw new ElementNotFoundException(id);
+            var element = GetClientById(id) ?? throw new ElementNotFoundException(id, _localizer);
             _dbContext.Clients.Remove(element);
             _dbContext.SaveChanges();
         }
@@ -137,7 +141,7 @@ public class ClientStorageContract : IClientStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
     private Client? GetClientById(string id) => _dbContext.Clients.FirstOrDefault(x => x.Id == id);

MagicCarpetProject/MagicCarpetDatabase/Implementations/EmployeeStorageContract.cs

@@ -1,8 +1,10 @@
 using AutoMapper;
 using MagicCarpetContracts.DataModels;
 using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Resources;
 using MagicCarpetContracts.StoragesContracts;
 using MagicCarpetDatabase.Models;
+using Microsoft.Extensions.Localization;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,12 +13,12 @@ using System.Threading.Tasks;
 
 namespace MagicCarpetDatabase.Implementations;
 
-public class EmployeeStorageContract : IEmployeeStorageContract
+internal class EmployeeStorageContract : IEmployeeStorageContract
 {
     private readonly MagicCarpetDbContext _dbContext;
     private readonly Mapper _mapper;
-
+    private readonly IStringLocalizer<Messages> _localizer;
-    public EmployeeStorageContract(MagicCarpetDbContext dbContext)
+    public EmployeeStorageContract(MagicCarpetDbContext dbContext, IStringLocalizer<Messages> localizer)
     {
         _dbContext = dbContext;
         var config = new MapperConfiguration(cfg =>
@@ -27,6 +29,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
             cfg.CreateMap<EmployeeDataModel, Employee>();
         });
         _mapper = new Mapper(config);
+        _localizer = localizer;
     }
 
     public List<EmployeeDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null)
@@ -55,7 +58,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -68,7 +71,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -81,7 +84,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -94,7 +97,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -108,12 +111,12 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
         {
             _dbContext.ChangeTracker.Clear();
-            throw new ElementExistsException("Id", employeeDataModel.Id);
+            throw new ElementExistsException("Id", employeeDataModel.Id, _localizer);
         }
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -121,7 +124,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
     {
         try
         {
-            var element = GetEmployeeById(employeeDataModel.Id) ?? throw new ElementNotFoundException(employeeDataModel.Id);
+            var element = GetEmployeeById(employeeDataModel.Id) ?? throw new ElementNotFoundException(employeeDataModel.Id, _localizer);
             _dbContext.Employees.Update(_mapper.Map(employeeDataModel, element));
             _dbContext.SaveChanges();
         }
@@ -133,7 +136,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -141,7 +144,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
     {
         try
         {
-            var element = GetEmployeeById(id) ?? throw new ElementNotFoundException(id);
+            var element = GetEmployeeById(id) ?? throw new ElementNotFoundException(id, _localizer);
             element.IsDeleted = true;
             _dbContext.SaveChanges();
         }
@@ -153,7 +156,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 
@@ -168,7 +171,7 @@ public class EmployeeStorageContract : IEmployeeStorageContract
         catch (Exception ex)
         {
             _dbContext.ChangeTracker.Clear();
-            throw new StorageException(ex);
+            throw new StorageException(ex, _localizer);
         }
     }
 

MagicCarpetProject/MagicCarpetWebApi/Program.cs

@@ -11,9 +11,12 @@ using MagicCarpetWebApi;
 using MagicCarpetWebApi.Adapters;
 using MagicCarpetWebApi.Infrastructure;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.AspNetCore.Localization;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
 using Microsoft.IdentityModel.Tokens;
 using Serilog;
+using System.Globalization;
 using System.IdentityModel.Tokens.Jwt;
 using System.Security.Claims;
 
@@ -50,6 +53,22 @@ builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
         };
     });
 
+builder.Services.AddLocalization();
+builder.Services.Configure<RequestLocalizationOptions>(
+    options =>
+    {
+        var supportedCultures = new List<CultureInfo>
+        {
+            new("en-US"),
+            new("ru-RU"),
+            new("zh-CN")
+        };
+
+        options.DefaultRequestCulture = new RequestCulture(culture: "ru-RU", uiCulture: "ru-RU");
+        options.SupportedCultures = supportedCultures;
+        options.SupportedUICultures = supportedCultures;
+    });
+
 builder.Services.AddSingleton<IConfigurationDatabase, ConfigurationDatabase>();
 builder.Services.AddSingleton<IConfigurationSalary, ConfigurationSalary>();
 
@@ -116,4 +135,11 @@ app.Map("/login/{username}", (string username) =>
 
 app.MapControllers();
 
+var localizeOptions =
+app.Services.GetService<IOptions<RequestLocalizationOptions>>();
+if (localizeOptions is not null)
+{
+    app.UseRequestLocalization(localizeOptions.Value);
+}
+
 app.Run();