миграция AddDateOfDeleteInWorker

This reverts commit e40e9edd5d.

TheCatHasPawsProject/CatHasPawsBusinessLogic/CatHasPawsBusinessLogic.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="CatHasPawsTests" />
+		<InternalsVisibleTo Include="CatHasPawsWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.1" />
+	</ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CatHasPawsContratcs\CatHasPawsContratcs.csproj" />
+  </ItemGroup>
+
+</Project>

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/BuyerBusinessLogicContract.cs

@@ -0,0 +1,70 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class BuyerBusinessLogicContract(IBuyerStorageContract buyerStorageContract, ILogger logger) : IBuyerBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly IBuyerStorageContract _buyerStorageContract = buyerStorageContract;
+
+	public List<BuyerDataModel> GetAllBuyers()
+	{
+		_logger.LogInformation("GetAllBuyers");
+		return _buyerStorageContract.GetList() ?? throw new NullListException();
+	}
+
+	public BuyerDataModel GetBuyerByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (data.IsGuid())
+		{
+			return _buyerStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+		}
+		if (Regex.IsMatch(data, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$"))
+		{
+			return _buyerStorageContract.GetElementByPhoneNumber(data) ?? throw new ElementNotFoundException(data);
+		}
+		return _buyerStorageContract.GetElementByFIO(data) ?? throw new ElementNotFoundException(data);
+	}
+
+	public void InsertBuyer(BuyerDataModel buyerDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(buyerDataModel));
+		ArgumentNullException.ThrowIfNull(buyerDataModel);
+		buyerDataModel.Validate();
+		_buyerStorageContract.AddElement(buyerDataModel);
+	}
+
+	public void UpdateBuyer(BuyerDataModel buyerDataModel)
+	{
+		_logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(buyerDataModel));
+		ArgumentNullException.ThrowIfNull(buyerDataModel);
+		buyerDataModel.Validate();
+		_buyerStorageContract.UpdElement(buyerDataModel);
+	}
+
+	public void DeleteBuyer(string id)
+	{
+		_logger.LogInformation("Delete by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_buyerStorageContract.DelElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/ManufacturerBusinessLogicContract.cs

@@ -0,0 +1,66 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class ManufacturerBusinessLogicContract(IManufacturerStorageContract manufacturerStorageContract, ILogger logger) : IManufacturerBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly IManufacturerStorageContract _manufacturerStorageContract = manufacturerStorageContract;
+
+	public List<ManufacturerDataModel> GetAllManufacturers()
+	{
+		_logger.LogInformation("GetAllManufacturers");
+		return _manufacturerStorageContract.GetList() ?? throw new NullListException();
+	}
+
+	public ManufacturerDataModel GetManufacturerByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (data.IsGuid())
+		{
+			return _manufacturerStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+		}
+		return _manufacturerStorageContract.GetElementByName(data) ?? _manufacturerStorageContract.GetElementByOldName(data) ??
+			throw new ElementNotFoundException(data);
+	}
+
+	public void InsertManufacturer(ManufacturerDataModel manufacturerDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(manufacturerDataModel));
+		ArgumentNullException.ThrowIfNull(manufacturerDataModel);
+		manufacturerDataModel.Validate();
+		_manufacturerStorageContract.AddElement(manufacturerDataModel);
+	}
+
+	public void UpdateManufacturer(ManufacturerDataModel manufacturerDataModel)
+	{
+		_logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(manufacturerDataModel));
+		ArgumentNullException.ThrowIfNull(manufacturerDataModel);
+		manufacturerDataModel.Validate();
+		_manufacturerStorageContract.UpdElement(manufacturerDataModel);
+	}
+
+	public void DeleteManufacturer(string id)
+	{
+		_logger.LogInformation("Delete by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_manufacturerStorageContract.DelElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/PostBusinessLogicContract.cs

@@ -0,0 +1,93 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class PostBusinessLogicContract(IPostStorageContract postStorageContract, ILogger logger) : IPostBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly IPostStorageContract _postStorageContract = postStorageContract;
+
+	public List<PostDataModel> GetAllPosts()
+	{
+		_logger.LogInformation("GetAllPosts");
+		return _postStorageContract.GetList() ?? throw new NullListException();
+	}
+
+	public List<PostDataModel> GetAllDataOfPost(string postId)
+	{
+		_logger.LogInformation("GetAllDataOfPost for {postId}", postId);
+		if (postId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(postId));
+		}
+		if (!postId.IsGuid())
+		{
+			throw new ValidationException("The value in the field postId is not a unique identifier.");
+		}
+		return _postStorageContract.GetPostWithHistory(postId) ?? throw new NullListException();
+	}
+
+	public PostDataModel GetPostByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (data.IsGuid())
+		{
+			return _postStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+		}
+		return _postStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+	}
+
+	public void InsertPost(PostDataModel postDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(postDataModel));
+		ArgumentNullException.ThrowIfNull(postDataModel);
+		postDataModel.Validate();
+		_postStorageContract.AddElement(postDataModel);
+	}
+
+	public void UpdatePost(PostDataModel postDataModel)
+	{
+		_logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(postDataModel));
+		ArgumentNullException.ThrowIfNull(postDataModel);
+		postDataModel.Validate();
+		_postStorageContract.UpdElement(postDataModel);
+	}
+
+	public void DeletePost(string id)
+	{
+		_logger.LogInformation("Delete by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_postStorageContract.DelElement(id);
+	}
+
+	public void RestorePost(string id)
+	{
+		_logger.LogInformation("Restore by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_postStorageContract.ResElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/ProductBusinessLogicContract.cs

@@ -0,0 +1,93 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class ProductBusinessLogicContract(IProductStorageContract productStorageContract, ILogger logger) : IProductBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly IProductStorageContract _productStorageContract = productStorageContract;
+
+	public List<ProductDataModel> GetAllProducts(bool onlyActive)
+	{
+		_logger.LogInformation("GetAllProducts params: {onlyActive}", onlyActive);
+		return _productStorageContract.GetList(onlyActive) ?? throw new NullListException();
+	}
+
+	public List<ProductDataModel> GetAllProductsByManufacturer(string manufacturerId, bool onlyActive = true)
+	{
+		if (manufacturerId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(manufacturerId));
+		}
+		if (!manufacturerId.IsGuid())
+		{
+			throw new ValidationException("The value in the field manufacturerId is not a unique identifier.");
+		}
+		_logger.LogInformation("GetAllProducts params: {manufacturerId}, {onlyActive}", manufacturerId, onlyActive);
+		return _productStorageContract.GetList(onlyActive, manufacturerId) ?? throw new NullListException();
+	}
+
+	public List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId)
+	{
+		_logger.LogInformation("GetProductHistoryByProduct for {productId}", productId);
+		if (productId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(productId));
+		}
+		if (!productId.IsGuid())
+		{
+			throw new ValidationException("The value in the field productId is not a unique identifier.");
+		}
+		return _productStorageContract.GetHistoryByProductId(productId) ?? throw new NullListException();
+	}
+
+	public ProductDataModel GetProductByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (data.IsGuid())
+		{
+			return _productStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+		}
+		return _productStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+	}
+
+	public void InsertProduct(ProductDataModel productDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(productDataModel));
+		ArgumentNullException.ThrowIfNull(productDataModel);
+		productDataModel.Validate();
+		_productStorageContract.AddElement(productDataModel);
+	}
+
+	public void UpdateProduct(ProductDataModel productDataModel)
+	{
+		_logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(productDataModel));
+		ArgumentNullException.ThrowIfNull(productDataModel);
+		productDataModel.Validate();
+		_productStorageContract.UpdElement(productDataModel);
+	}
+
+	public void DeleteProduct(string id)
+	{
+		_logger.LogInformation("Delete by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_productStorageContract.DelElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/SalaryBusinessLogicContract.cs

@@ -0,0 +1,121 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.Infrastructure.PostConfigurations;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class SalaryBusinessLogicContract(ISalaryStorageContract salaryStorageContract, ISaleStorageContract saleStorageContract, IPostStorageContract postStorageContract, IWorkerStorageContract workerStorageContract, ILogger logger, IConfigurationSalary сonfiguration) : ISalaryBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly ISalaryStorageContract _salaryStorageContract = salaryStorageContract;
+	private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+	private readonly IPostStorageContract _postStorageContract = postStorageContract;
+	private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+	private readonly IConfigurationSalary _salaryConfiguration = сonfiguration;
+	private readonly Lock _lockObject = new();
+
+	public List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate)
+	{
+		_logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}", fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		return _salaryStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+	}
+
+	public List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId)
+	{
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		if (workerId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(workerId));
+		}
+		if (!workerId.IsGuid())
+		{
+			throw new ValidationException("The value in the field workerId is not a unique identifier.");
+		}
+		_logger.LogInformation("GetAllSalaries params: {fromDate}, {toDate}, {workerId}", fromDate, toDate, workerId);
+		return _salaryStorageContract.GetList(fromDate, toDate, workerId) ?? throw new NullListException();
+	}
+
+	public void CalculateSalaryByMounth(DateTime date)
+	{
+		_logger.LogInformation("CalculateSalaryByMounth: {date}", date);
+		var startDate = new DateTime(date.Year, date.Month, 1);
+		var finishDate = new DateTime(date.Year, date.Month, DateTime.DaysInMonth(date.Year, date.Month));
+		var workers = _workerStorageContract.GetList() ?? throw new NullListException();
+		foreach (var worker in workers)
+		{
+			var sales = _saleStorageContract.GetList(startDate, finishDate, workerId: worker.Id) ?? throw new NullListException();
+			var post = _postStorageContract.GetElementById(worker.PostId) ?? throw new NullListException();
+			var salary = post.ConfigurationModel switch
+			{
+				null => 0,
+				CashierPostConfiguration cpc => CalculateSalaryForCashier(sales, startDate, finishDate, cpc),
+				SupervisorPostConfiguration spc => CalculateSalaryForSupervisor(startDate, finishDate, spc),
+				PostConfiguration pc => pc.Rate,
+			};
+			_logger.LogDebug("The employee {workerId} was paid a salary of {salary}", worker.Id, salary);
+			_salaryStorageContract.AddElement(new SalaryDataModel(worker.Id, finishDate, salary));
+		}
+	}
+
+	private double CalculateSalaryForCashier(List<SaleDataModel> sales, DateTime startDate, DateTime finishDate, CashierPostConfiguration config)
+	{
+		var tasks = new List<Task>();
+		var calcPercent = 0.0;
+		for (var date = startDate; date < finishDate; date = date.AddDays(1))
+		{
+			tasks.Add(Task.Factory.StartNew((object? obj) =>
+			{
+				var dateInTask = (DateTime)obj!;
+				var salesInDay = sales.Where(x => x.SaleDate >= dateInTask && x.SaleDate <= dateInTask.AddDays(1)).ToArray();
+				if (salesInDay.Length > 0)
+				{
+					lock (_lockObject)
+					{
+						calcPercent += (salesInDay.Sum(x => x.Sum) / salesInDay.Length) * config.SalePercent;
+					}
+				}
+			}, date));
+		}
+		var calcBonusTask = Task.Run(() =>
+		{
+			return sales.Where(x => x.Sum > _salaryConfiguration.ExtraSaleSum).Sum(x => x.Sum) * config.BonusForExtraSales;
+		});
+		try
+		{
+			Task.WaitAll([Task.WhenAll(tasks), calcBonusTask]);
+		}
+		catch (AggregateException agEx)
+		{
+			foreach (var ex in agEx.InnerExceptions)
+			{
+				_logger.LogError(ex, "Error in the cashier payroll process");
+			}
+			return 0;
+		}
+		return config.Rate + calcPercent + calcBonusTask.Result;
+	}
+	private double CalculateSalaryForSupervisor(DateTime startDate, DateTime finishDate, SupervisorPostConfiguration config)
+	{
+		try
+		{
+			return config.Rate + config.PersonalCountTrendPremium * _workerStorageContract.GetWorkerTrend(startDate, finishDate);
+		}
+		catch (Exception ex)
+		{
+			_logger.LogError(ex, "Error in the supervisor payroll process");
+			return 0;
+		}
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/SaleBusinessLogicContract.cs

@@ -0,0 +1,115 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class SaleBusinessLogicContract(ISaleStorageContract saleStorageContract, ILogger logger) : ISaleBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+
+	public List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate)
+	{
+		_logger.LogInformation("GetAllSales params: {fromDate}, {toDate}", fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		return _saleStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+	}
+
+	public List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate)
+	{
+		_logger.LogInformation("GetAllSales params: {workerId}, {fromDate}, {toDate}", workerId, fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		if (workerId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(workerId));
+		}
+		if (!workerId.IsGuid())
+		{
+			throw new ValidationException("The value in the field workerId is not a unique identifier.");
+		}
+		return _saleStorageContract.GetList(fromDate, toDate, workerId: workerId) ?? throw new NullListException();
+	}
+
+	public List<SaleDataModel> GetAllSalesByBuyerByPeriod(string buyerId, DateTime fromDate, DateTime toDate)
+	{
+		_logger.LogInformation("GetAllSales params: {buyerId}, {fromDate}, {toDate}", buyerId, fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		if (buyerId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(buyerId));
+		}
+		if (!buyerId.IsGuid())
+		{
+			throw new ValidationException("The value in the field buyerId is not a unique identifier.");
+		}
+		return _saleStorageContract.GetList(fromDate, toDate, buyerId: buyerId) ?? throw new NullListException();
+	}
+
+	public List<SaleDataModel> GetAllSalesByProductByPeriod(string productId, DateTime fromDate, DateTime toDate)
+	{
+		_logger.LogInformation("GetAllSales params: {productId}, {fromDate}, {toDate}", productId, fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		if (productId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(productId));
+		}
+		if (!productId.IsGuid())
+		{
+			throw new ValidationException("The value in the field productId is not a unique identifier.");
+		}
+		return _saleStorageContract.GetList(fromDate, toDate, productId: productId) ?? throw new NullListException();
+	}
+
+	public SaleDataModel GetSaleByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (!data.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		return _saleStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+	}
+
+	public void InsertSale(SaleDataModel saleDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(saleDataModel));
+		ArgumentNullException.ThrowIfNull(saleDataModel);
+		saleDataModel.Validate();
+		_saleStorageContract.AddElement(saleDataModel);
+	}
+
+	public void CancelSale(string id)
+	{
+		_logger.LogInformation("Cancel by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_saleStorageContract.DelElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsBusinessLogic/Implementations/WorkerBusinessLogicContract.cs

@@ -0,0 +1,99 @@
+using CatHasPawsContratcs.BusinessLogicsContracts;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Extensions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System.Text.Json;
+
+namespace CatHasPawsBusinessLogic.Implementations;
+
+internal class WorkerBusinessLogicContract(IWorkerStorageContract workerStorageContract, ILogger logger) : IWorkerBusinessLogicContract
+{
+	private readonly ILogger _logger = logger;
+	private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+
+	public List<WorkerDataModel> GetAllWorkers(bool onlyActive = true)
+	{
+		_logger.LogInformation("GetAllWorkers params: {onlyActive}", onlyActive);
+		return _workerStorageContract.GetList(onlyActive) ?? throw new NullListException();
+	}
+
+	public List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true)
+	{
+		_logger.LogInformation("GetAllWorkers params: {postId}, {onlyActive},", postId, onlyActive);
+		if (postId.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(postId));
+		}
+		if (!postId.IsGuid())
+		{
+			throw new ValidationException("The value in the field postId is not a unique identifier.");
+		}
+		return _workerStorageContract.GetList(onlyActive, postId) ?? throw new NullListException();
+	}
+
+	public List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+	{
+		_logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		return _workerStorageContract.GetList(onlyActive, fromBirthDate: fromDate, toBirthDate: toDate) ?? throw new NullListException();
+	}
+
+	public List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+	{
+		_logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+		if (fromDate.IsDateNotOlder(toDate))
+		{
+			throw new IncorrectDatesException(fromDate, toDate);
+		}
+		return _workerStorageContract.GetList(onlyActive, fromEmploymentDate: fromDate, toEmploymentDate: toDate) ?? throw new NullListException();
+	}
+
+	public WorkerDataModel GetWorkerByData(string data)
+	{
+		_logger.LogInformation("Get element by data: {data}", data);
+		if (data.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(data));
+		}
+		if (data.IsGuid())
+		{
+			return _workerStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+		}
+		return _workerStorageContract.GetElementByFIO(data) ?? throw new ElementNotFoundException(data);
+	}
+
+	public void InsertWorker(WorkerDataModel workerDataModel)
+	{
+		_logger.LogInformation("New data: {json}", JsonSerializer.Serialize(workerDataModel));
+		ArgumentNullException.ThrowIfNull(workerDataModel);
+		workerDataModel.Validate();
+		_workerStorageContract.AddElement(workerDataModel);
+	}
+
+	public void UpdateWorker(WorkerDataModel workerDataModel)
+	{
+		_logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(workerDataModel));
+		ArgumentNullException.ThrowIfNull(workerDataModel);
+		workerDataModel.Validate();
+		_workerStorageContract.UpdElement(workerDataModel);
+	}
+
+	public void DeleteWorker(string id)
+	{
+		_logger.LogInformation("Delete by id: {id}", id);
+		if (id.IsEmpty())
+		{
+			throw new ArgumentNullException(nameof(id));
+		}
+		if (!id.IsGuid())
+		{
+			throw new ValidationException("Id is not a unique identifier");
+		}
+		_workerStorageContract.DelElement(id);
+	}
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/IBuyerAdapter.cs

@@ -0,0 +1,17 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface IBuyerAdapter
+{
+	BuyerOperationResponse GetList();
+
+	BuyerOperationResponse GetElement(string data);
+
+	BuyerOperationResponse RegisterBuyer(BuyerBindingModel buyerModel);
+
+	BuyerOperationResponse ChangeBuyerInfo(BuyerBindingModel buyerModel);
+
+	BuyerOperationResponse RemoveBuyer(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/IManufacturerAdapter.cs

@@ -0,0 +1,17 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface IManufacturerAdapter
+{
+	ManufacturerOperationResponse GetList();
+
+	ManufacturerOperationResponse GetElement(string data);
+
+	ManufacturerOperationResponse RegisterManufacturer(ManufacturerBindingModel manufacturerModel);
+
+	ManufacturerOperationResponse ChangeManufacturerInfo(ManufacturerBindingModel manufacturerModel);
+
+	ManufacturerOperationResponse RemoveManufacturer(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/IPostAdapter.cs

@@ -0,0 +1,21 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface IPostAdapter
+{
+	PostOperationResponse GetList();
+
+	PostOperationResponse GetHistory(string id);
+
+	PostOperationResponse GetElement(string data);
+
+	PostOperationResponse RegisterPost(PostBindingModel postModel);
+
+	PostOperationResponse ChangePostInfo(PostBindingModel postModel);
+
+	PostOperationResponse RemovePost(string id);
+
+	PostOperationResponse RestorePost(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/IProductAdapter.cs

@@ -0,0 +1,21 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface IProductAdapter
+{
+	ProductOperationResponse GetList(bool includeDeleted);
+
+	ProductOperationResponse GetManufacturerList(string id, bool includeDeleted);
+
+	ProductOperationResponse GetHistory(string id);
+
+	ProductOperationResponse GetElement(string data);
+
+	ProductOperationResponse RegisterProduct(ProductBindingModel productModel);
+
+	ProductOperationResponse ChangeProductInfo(ProductBindingModel productModel);
+
+	ProductOperationResponse RemoveProduct(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/ISaleAdapter.cs

@@ -0,0 +1,21 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface ISaleAdapter
+{
+	SaleOperationResponse GetList(DateTime fromDate, DateTime toDate);
+
+	SaleOperationResponse GetWorkerList(string id, DateTime fromDate, DateTime toDate);
+
+	SaleOperationResponse GetBuyerList(string id, DateTime fromDate, DateTime toDate);
+
+	SaleOperationResponse GetProductList(string id, DateTime fromDate, DateTime toDate);
+
+	SaleOperationResponse GetElement(string id);
+
+	SaleOperationResponse MakeSale(SaleBindingModel saleModel);
+
+	SaleOperationResponse CancelSale(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/IWorkerAdapter.cs

@@ -0,0 +1,23 @@
+using CatHasPawsContratcs.AdapterContracts.OperationResponses;
+using CatHasPawsContratcs.BindingModels;
+
+namespace CatHasPawsContratcs.AdapterContracts;
+
+public interface IWorkerAdapter
+{
+	WorkerOperationResponse GetList(bool includeDeleted);
+
+	WorkerOperationResponse GetPostList(string id, bool includeDeleted);
+
+	WorkerOperationResponse GetListByBirthDate(DateTime fromDate, DateTime toDate, bool includeDeleted);
+
+	WorkerOperationResponse GetListByEmploymentDate(DateTime fromDate, DateTime toDate, bool includeDeleted);
+
+	WorkerOperationResponse GetElement(string data);
+
+	WorkerOperationResponse RegisterWorker(WorkerBindingModel workerModel);
+
+	WorkerOperationResponse ChangeWorkerInfo(WorkerBindingModel workerModel);
+
+	WorkerOperationResponse RemoveWorker(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/BuyerOperationResponse.cs

@@ -0,0 +1,19 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class BuyerOperationResponse : OperationResponse
+{
+	public static BuyerOperationResponse OK(List<BuyerViewModel> data) => OK<BuyerOperationResponse, List<BuyerViewModel>>(data);
+
+	public static BuyerOperationResponse OK(BuyerViewModel data) => OK<BuyerOperationResponse, BuyerViewModel>(data);
+
+	public static BuyerOperationResponse NoContent() => NoContent<BuyerOperationResponse>();
+
+	public static BuyerOperationResponse BadRequest(string message) => BadRequest<BuyerOperationResponse>(message);
+
+	public static BuyerOperationResponse NotFound(string message) => NotFound<BuyerOperationResponse>(message);
+
+	public static BuyerOperationResponse InternalServerError(string message) => InternalServerError<BuyerOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/ManufacturerOperationResponse.cs

@@ -0,0 +1,19 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class ManufacturerOperationResponse : OperationResponse
+{
+	public static ManufacturerOperationResponse OK(List<ManufacturerViewModel> data) => OK<ManufacturerOperationResponse, List<ManufacturerViewModel>>(data);
+
+	public static ManufacturerOperationResponse OK(ManufacturerViewModel data) => OK<ManufacturerOperationResponse, ManufacturerViewModel>(data);
+
+	public static ManufacturerOperationResponse NoContent() => NoContent<ManufacturerOperationResponse>();
+
+	public static ManufacturerOperationResponse NotFound(string message) => NotFound<ManufacturerOperationResponse>(message);
+
+	public static ManufacturerOperationResponse BadRequest(string message) => BadRequest<ManufacturerOperationResponse>(message);
+
+	public static ManufacturerOperationResponse InternalServerError(string message) => InternalServerError<ManufacturerOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/PostOperationResponse.cs

@@ -0,0 +1,19 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class PostOperationResponse : OperationResponse
+{
+	public static PostOperationResponse OK(List<PostViewModel> data) => OK<PostOperationResponse, List<PostViewModel>>(data);
+
+	public static PostOperationResponse OK(PostViewModel data) => OK<PostOperationResponse, PostViewModel>(data);
+
+	public static PostOperationResponse NoContent() => NoContent<PostOperationResponse>();
+
+	public static PostOperationResponse NotFound(string message) => NotFound<PostOperationResponse>(message);
+
+	public static PostOperationResponse BadRequest(string message) => BadRequest<PostOperationResponse>(message);
+
+	public static PostOperationResponse InternalServerError(string message) => InternalServerError<PostOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/ProductOperationResponse.cs

@@ -0,0 +1,21 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class ProductOperationResponse : OperationResponse
+{
+	public static ProductOperationResponse OK(List<ProductViewModel> data) => OK<ProductOperationResponse, List<ProductViewModel>>(data);
+
+	public static ProductOperationResponse OK(List<ProductHistoryViewModel> data) => OK<ProductOperationResponse, List<ProductHistoryViewModel>>(data);
+
+	public static ProductOperationResponse OK(ProductViewModel data) => OK<ProductOperationResponse, ProductViewModel>(data);
+
+	public static ProductOperationResponse NoContent() => NoContent<ProductOperationResponse>();
+
+	public static ProductOperationResponse NotFound(string message) => NotFound<ProductOperationResponse>(message);
+
+	public static ProductOperationResponse BadRequest(string message) => BadRequest<ProductOperationResponse>(message);
+
+	public static ProductOperationResponse InternalServerError(string message) => InternalServerError<ProductOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/SaleOperationResponse.cs

@@ -0,0 +1,19 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class SaleOperationResponse : OperationResponse
+{
+	public static SaleOperationResponse OK(List<SaleViewModel> data) => OK<SaleOperationResponse, List<SaleViewModel>>(data);
+
+	public static SaleOperationResponse OK(SaleViewModel data) => OK<SaleOperationResponse, SaleViewModel>(data);
+
+	public static SaleOperationResponse NoContent() => NoContent<SaleOperationResponse>();
+
+	public static SaleOperationResponse NotFound(string message) => NotFound<SaleOperationResponse>(message);
+
+	public static SaleOperationResponse BadRequest(string message) => BadRequest<SaleOperationResponse>(message);
+
+	public static SaleOperationResponse InternalServerError(string message) => InternalServerError<SaleOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/AdapterContracts/OperationResponses/WorkerOperationResponse.cs

@@ -0,0 +1,19 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.ViewModels;
+
+namespace CatHasPawsContratcs.AdapterContracts.OperationResponses;
+
+public class WorkerOperationResponse : OperationResponse
+{
+	public static WorkerOperationResponse OK(List<WorkerViewModel> data) => OK<WorkerOperationResponse, List<WorkerViewModel>>(data);
+
+	public static WorkerOperationResponse OK(WorkerViewModel data) => OK<WorkerOperationResponse, WorkerViewModel>(data);
+
+	public static WorkerOperationResponse NoContent() => NoContent<WorkerOperationResponse>();
+
+	public static WorkerOperationResponse NotFound(string message) => NotFound<WorkerOperationResponse>(message);
+
+	public static WorkerOperationResponse BadRequest(string message) => BadRequest<WorkerOperationResponse>(message);
+
+	public static WorkerOperationResponse InternalServerError(string message) => InternalServerError<WorkerOperationResponse>(message);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/BuyerBindingModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class BuyerBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? FIO { get; set; }
+
+	public string? PhoneNumber { get; set; }
+
+	public double DiscountSize { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/ManufacturerBindingModel.cs

@@ -0,0 +1,8 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class ManufacturerBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? ManufacturerName { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/PostBindingModel.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class PostBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? PostId => Id;
+
+	public string? PostName { get; set; }
+
+	public string? PostType { get; set; }
+
+	public string? ConfigurationJson { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/ProductBindingModel.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class ProductBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? ProductName { get; set; }
+
+	public string? ProductType { get; set; }
+
+	public string? ManufacturerId { get; set; }
+
+	public double Price { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/SaleBindingModel.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class SaleBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? WorkerId { get; set; }
+
+	public string? BuyerId { get; set; }
+
+	public int DiscountType { get; set; }
+
+	public List<SaleProductBindingModel>? Products { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/SaleProductBindingModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class SaleProductBindingModel
+{
+	public string? SaleId { get; set; }
+
+	public string? ProductId { get; set; }
+
+	public int Count { get; set; }
+
+	public double Price { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BindingModels/WorkerBindingModel.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsContratcs.BindingModels;
+
+public class WorkerBindingModel
+{
+	public string? Id { get; set; }
+
+	public string? FIO { get; set; }
+
+	public string? PostId { get; set; }
+
+	public DateTime BirthDate { get; set; }
+
+	public DateTime EmploymentDate { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/IBuyerBusinessLogicContract.cs

@@ -0,0 +1,16 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface IBuyerBusinessLogicContract
+{
+	List<BuyerDataModel> GetAllBuyers();
+
+	BuyerDataModel GetBuyerByData(string data);
+
+	void InsertBuyer(BuyerDataModel buyerDataModel);
+
+	void UpdateBuyer(BuyerDataModel buyerDataModel);
+
+	void DeleteBuyer(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/IManufacturerBusinessLogicContract.cs

@@ -0,0 +1,16 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface IManufacturerBusinessLogicContract
+{
+	List<ManufacturerDataModel> GetAllManufacturers();
+
+	ManufacturerDataModel GetManufacturerByData(string data);
+
+	void InsertManufacturer(ManufacturerDataModel manufacturerDataModel);
+
+	void UpdateManufacturer(ManufacturerDataModel manufacturerDataModel);
+
+	void DeleteManufacturer(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/IPostBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface IPostBusinessLogicContract
+{
+	List<PostDataModel> GetAllPosts();
+
+	List<PostDataModel> GetAllDataOfPost(string postId);
+
+	PostDataModel GetPostByData(string data);
+
+	void InsertPost(PostDataModel postDataModel);
+
+	void UpdatePost(PostDataModel postDataModel);
+
+	void DeletePost(string id);
+
+	void RestorePost(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/IProductBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface IProductBusinessLogicContract
+{
+	List<ProductDataModel> GetAllProducts(bool onlyActive = true);
+
+	List<ProductDataModel> GetAllProductsByManufacturer(string manufacturerId, bool onlyActive = true);
+
+	List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId);
+
+	ProductDataModel GetProductByData(string data);
+
+	void InsertProduct(ProductDataModel productDataModel);
+
+	void UpdateProduct(ProductDataModel productDataModel);
+
+	void DeleteProduct(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/ISalaryBusinessLogicContract.cs

@@ -0,0 +1,12 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface ISalaryBusinessLogicContract
+{
+	List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate);
+
+	List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId);
+
+	void CalculateSalaryByMounth(DateTime date);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/ISaleBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface ISaleBusinessLogicContract
+{
+	List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
+
+	List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+
+	List<SaleDataModel> GetAllSalesByBuyerByPeriod(string buyerId, DateTime fromDate, DateTime toDate);
+
+	List<SaleDataModel> GetAllSalesByProductByPeriod(string productId, DateTime fromDate, DateTime toDate);
+
+	SaleDataModel GetSaleByData(string data);
+
+	void InsertSale(SaleDataModel saleDataModel);
+
+	void CancelSale(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/BusinessLogicsContracts/IWorkerBusinessLogicContract.cs

@@ -0,0 +1,22 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.BusinessLogicsContracts;
+
+public interface IWorkerBusinessLogicContract
+{
+	List<WorkerDataModel> GetAllWorkers(bool onlyActive = true);
+
+	List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true);
+
+	List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+
+	List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+
+	WorkerDataModel GetWorkerByData(string data);
+
+	void InsertWorker(WorkerDataModel workerDataModel);
+
+	void UpdateWorker(WorkerDataModel workerDataModel);
+
+	void DeleteWorker(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/CatHasPawsContratcs.csproj

@@ -6,4 +6,9 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.3.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
+  </ItemGroup>
+
 </Project>

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/ManufacturerDataModel.cs

@@ -14,6 +14,8 @@ public class ManufacturerDataModel(string id, string manufacturerName, string? p
 
 	public string? PrevPrevManufacturerName { get; private set; } = prevPrevManufacturerName;
 
+	public ManufacturerDataModel(string id, string manufacturerName) : this(id, manufacturerName, null, null) { }
+
 	public void Validate()
 	{
 		if (Id.IsEmpty())

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/PostDataModel.cs

@@ -2,24 +2,35 @@
 using CatHasPawsContratcs.Exceptions;
 using CatHasPawsContratcs.Extensions;
 using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.Infrastructure.PostConfigurations;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json;
 
 namespace CatHasPawsContratcs.DataModels;
 
-public class PostDataModel(string id, string postId, string postName, PostType postType, double salary, bool isActual, DateTime changeDate) : IValidation
+public class PostDataModel(string postId, string postName, PostType postType, PostConfiguration configuration) : IValidation
 {
-	public string Id { get; private set; } = id;
-
-	public string PostId { get; private set; } = postId;
+	public string Id { get; private set; } = postId;
 
 	public string PostName { get; private set; } = postName;
 
 	public PostType PostType { get; private set; } = postType;
 
-	public double Salary { get; private set; } = salary;
+	public PostConfiguration ConfigurationModel { get; private set; } = configuration;
 
-	public bool IsActual { get; private set; } = isActual;
-
-	public DateTime ChangeDate { get; private set; } = changeDate;
+	public PostDataModel(string postId, string postName, PostType postType, string configurationJson) : this(postId, postName, postType, (PostConfiguration)null)
+	{
+		var obj = JToken.Parse(configurationJson);
+		if (obj is not null)
+		{
+			ConfigurationModel = obj.Value<string>("Type") switch
+			{
+				nameof(CashierPostConfiguration) => JsonConvert.DeserializeObject<CashierPostConfiguration>(configurationJson)!,
+				nameof(SupervisorPostConfiguration) => JsonConvert.DeserializeObject<SupervisorPostConfiguration>(configurationJson)!,
+				_ => JsonConvert.DeserializeObject<PostConfiguration>(configurationJson)!,
+			};
+		}
+	}
 
 	public void Validate()
 	{
@@ -29,19 +40,16 @@ public class PostDataModel(string id, string postId, string postName, PostType p
 		if (!Id.IsGuid())
 			throw new ValidationException("The value in the field Id is not a unique identifier");
 
-		if (PostId.IsEmpty())
-			throw new ValidationException("Field PostId is empty");
-
-		if (!PostId.IsGuid())
-			throw new ValidationException("The value in the field PostId is not a unique identifier");
-
 		if (PostName.IsEmpty())
 			throw new ValidationException("Field PostName is empty");
 
 		if (PostType == PostType.None)
 			throw new ValidationException("Field PostType is empty");
 
-		if (Salary <= 0)
-			throw new ValidationException("Field Salary is empty");
+		if (ConfigurationModel is null)
+			throw new ValidationException("Field ConfigurationModel is not initialized");
+
+		if (ConfigurationModel!.Rate <= 0)
+			throw new ValidationException("Field Rate is less or equal zero");
 	}
 }

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/ProductDataModel.cs

@@ -7,6 +7,8 @@ namespace CatHasPawsContratcs.DataModels;
 
 public class ProductDataModel(string id, string productName, ProductType productType, string manufacturerId, double price, bool isDeleted) : IValidation
 {
+	private readonly ManufacturerDataModel? _manufacturer;
+
 	public string Id { get; private set; } = id;
 
 	public string ProductName { get; private set; } = productName;
@@ -19,6 +21,15 @@ public class ProductDataModel(string id, string productName, ProductType product
 
 	public bool IsDeleted { get; private set; } = isDeleted;
 
+	public string ManufacturerName => _manufacturer?.ManufacturerName ?? string.Empty;
+
+	public ProductDataModel(string id, string productName, ProductType productType, string manufacturerId, double price, bool isDeleted, ManufacturerDataModel manufacturer) : this(id, productName, productType, manufacturerId, price, isDeleted)
+	{
+		_manufacturer = manufacturer;
+	}
+
+	public ProductDataModel(string id, string productName, ProductType productType, string manufacturerId, double price) : this(id, productName, productType, manufacturerId, price, false) { }
+
 	public void Validate()
 	{
 		if (Id.IsEmpty())

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/ProductHistoryDataModel.cs

@@ -6,12 +6,22 @@ namespace CatHasPawsContratcs.DataModels;
 
 public class ProductHistoryDataModel(string productId, double oldPrice) : IValidation
 {
+	private readonly ProductDataModel? _product;
+
 	public string ProductId { get; private set; } = productId;
 
 	public double OldPrice { get; private set; } = oldPrice;
 
 	public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
 
+	public string ProductName => _product?.ProductName ?? string.Empty;
+
+	public ProductHistoryDataModel(string productId, double oldPrice, DateTime changeDate, ProductDataModel product) : this(productId, oldPrice)
+	{
+		ChangeDate = changeDate;
+		_product = product;
+	}
+
 	public void Validate()
 	{
 		if (ProductId.IsEmpty())

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/SaleDataModel.cs

@@ -5,25 +5,76 @@ using CatHasPawsContratcs.Infrastructure;
 
 namespace CatHasPawsContratcs.DataModels;
 
-public class SaleDataModel(string id, string workerId, string? buyerId, double sum, DiscountType discountType, double discount, bool isCancel, List<SaleProductDataModel> products) : IValidation
+public class SaleDataModel : IValidation
 {
-	public string Id { get; private set; } = id;
+	private readonly BuyerDataModel? _buyer;
 
-	public string WorkerId { get; private set; } = workerId;
+	private readonly WorkerDataModel? _worker;
 
-	public string? BuyerId { get; private set; } = buyerId;
+	public string Id { get; private set; }
+
+	public string WorkerId { get; private set; }
+
+	public string? BuyerId { get; private set; }
 
 	public DateTime SaleDate { get; private set; } = DateTime.UtcNow;
 
-	public double Sum { get; private set; } = sum;
+	public double Sum { get; private set; }
 
-	public DiscountType DiscountType { get; private set; } = discountType;
+	public DiscountType DiscountType { get; private set; }
 
-	public double Discount { get; private set; } = discount;
+	public double Discount { get; private set; }
 
-	public bool IsCancel { get; private set; } = isCancel;
+	public bool IsCancel { get; private set; }
 
-	public List<SaleProductDataModel> Products { get; private set; } = products;
+	public List<SaleProductDataModel>? Products { get; private set; }
+
+	public string BuyerFIO => _buyer?.FIO ?? string.Empty;
+
+	public string WorkerFIO => _worker?.FIO ?? string.Empty;
+
+	public SaleDataModel(string id, string workerId, string? buyerId, DiscountType discountType, bool isCancel, List<SaleProductDataModel> saleProducts)
+	{
+		Id = id;
+		WorkerId = workerId;
+		BuyerId = buyerId;
+		DiscountType = discountType;
+		IsCancel = isCancel;
+		Products = saleProducts;
+		var percent = 0.0;
+		foreach (DiscountType elem in Enum.GetValues<DiscountType>())
+		{
+			if ((elem & discountType) != 0)
+			{
+				switch (elem)
+				{
+					case DiscountType.None:
+						break;
+					case DiscountType.OnSale:
+						percent += 0.1;
+						break;
+					case DiscountType.RegularCustomer:
+						percent += 0.5;
+						break;
+					case DiscountType.Certificate:
+						percent += 0.3;
+						break;
+				}
+			}
+		}
+		Sum = Products?.Sum(x => x.Price * x.Count) ?? 0;
+		Discount = Sum * percent;
+	}
+
+	public SaleDataModel(string id, string workerId, string? buyerId, double sum, DiscountType discountType, double discount, bool isCancel, List<SaleProductDataModel> saleProducts, WorkerDataModel worker, BuyerDataModel? buyer) : this(id, workerId, buyerId, discountType, isCancel, saleProducts)
+	{
+		Sum = sum;
+		Discount = discount;
+		_worker = worker;
+		_buyer = buyer;
+	}
+
+	public SaleDataModel(string id, string workerId, string? buyerId, int discountType, List<SaleProductDataModel> products) : this(id, workerId, buyerId, (DiscountType)discountType, false, products) { }
 
 	public void Validate()
 	{

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/SaleProductDataModel.cs

@@ -4,14 +4,25 @@ using CatHasPawsContratcs.Infrastructure;
 
 namespace CatHasPawsContratcs.DataModels;
 
-public class SaleProductDataModel(string saleId, string productId, int count) : IValidation
+public class SaleProductDataModel(string saleId, string productId, int count, double price) : IValidation
 {
+	private readonly ProductDataModel? _product;
+
 	public string SaleId { get; private set; } = saleId;
 
 	public string ProductId { get; private set; } = productId;
 
 	public int Count { get; private set; } = count;
 
+	public double Price { get; private set; } = price;
+
+	public string ProductName => _product?.ProductName ?? string.Empty;
+
+	public SaleProductDataModel(string saleId, string productId, int count, double price, ProductDataModel product) : this(saleId, productId, count, price)
+	{
+		_product = product;
+	}
+
 	public void Validate()
 	{
 		if (SaleId.IsEmpty())
@@ -28,5 +39,8 @@ public class SaleProductDataModel(string saleId, string productId, int count) :
 
 		if (Count <= 0)
 			throw new ValidationException("Field Count is less than or equal to 0");
+
+		if (Price <= 0)
+			throw new ValidationException("Field Price is less than or equal to 0");
 	}
 }

TheCatHasPawsProject/CatHasPawsContratcs/DataModels/WorkerDataModel.cs

@@ -6,6 +6,8 @@ namespace CatHasPawsContratcs.DataModels;
 
 public class WorkerDataModel(string id, string fio, string postId, DateTime birthDate, DateTime employmentDate, bool isDeleted) : IValidation
 {
+	private readonly PostDataModel? _post;
+
 	public string Id { get; private set; } = id;
 
 	public string FIO { get; private set; } = fio;
@@ -18,6 +20,15 @@ public class WorkerDataModel(string id, string fio, string postId, DateTime birt
 
 	public bool IsDeleted { get; private set; } = isDeleted;
 
+	public string PostName => _post?.PostName ?? string.Empty;
+
+	public WorkerDataModel(string id, string fio, string postId, DateTime birthDate, DateTime employmentDate, bool isDeleted, PostDataModel post) : this(id, fio, postId, birthDate, employmentDate, isDeleted)
+	{
+		_post = post;
+	}
+
+	public WorkerDataModel(string id, string fio, string postId, DateTime birthDate, DateTime employmentDate) : this(id, fio, postId, birthDate, employmentDate, false) { }
+
 	public void Validate()
 	{
 		if (Id.IsEmpty())

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/ElementDeletedException.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class ElementDeletedException : Exception
+{
+	public ElementDeletedException(string id) : base($"Cannot modify a deleted item (id: {id})") { }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/ElementExistsException.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class ElementExistsException : Exception
+{
+	public string ParamName { get; private set; }
+
+	public string ParamValue { get; private set; }
+
+	public ElementExistsException(string paramName, string paramValue) : base($"There is already an element with value{paramValue} of parameter {paramName}")
+	{
+		ParamName = paramName;
+		ParamValue = paramValue;
+	}
+}

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,11 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+	public string Value { get; private set; }
+
+	public ElementNotFoundException(string value) : base($"Element not found at value = {value}")
+	{
+		Value = value;
+	}
+}

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/IncorrectDatesException.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class IncorrectDatesException : Exception
+{
+	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}") { }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/NullListException.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class NullListException : Exception
+{
+	public NullListException() : base("The returned list is null") { }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Exceptions/StorageException.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Exceptions;
+
+public class StorageException : Exception
+{
+	public StorageException(Exception ex) : base($"Error while working in storage: {ex.Message}", ex) { }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,9 @@
+namespace CatHasPawsContratcs.Extensions;
+
+public static class DateTimeExtensions
+{
+	public static bool IsDateNotOlder(this DateTime date, DateTime olderDate)
+	{
+		return date >= olderDate;
+	}
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/IConfigurationDatabase.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Infrastructure;
+
+public interface IConfigurationDatabase
+{
+	string ConnectionString { get; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/IConfigurationSalary.cs

@@ -0,0 +1,6 @@
+namespace CatHasPawsContratcs.Infrastructure;
+
+public interface IConfigurationSalary
+{
+	double ExtraSaleSum { get; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/OperationResponse.cs

@@ -0,0 +1,37 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System.Net;
+
+namespace CatHasPawsContratcs.Infrastructure;
+
+public class OperationResponse
+{
+	protected HttpStatusCode StatusCode { get; set; }
+
+	protected object? Result { get; set; }
+
+	public IActionResult GetResponse(HttpRequest request, HttpResponse response)
+	{
+		ArgumentNullException.ThrowIfNull(request);
+		ArgumentNullException.ThrowIfNull(response);
+
+		response.StatusCode = (int)StatusCode;
+
+		if (Result is null)
+		{
+			return new StatusCodeResult((int)StatusCode);
+		}
+
+		return new ObjectResult(Result);
+	}
+
+	protected static TResult OK<TResult, TData>(TData data) where TResult : OperationResponse, new() => new() { StatusCode = HttpStatusCode.OK, Result = data };
+
+	protected static TResult NoContent<TResult>() where TResult : OperationResponse, new() => new() { StatusCode = HttpStatusCode.NoContent };
+
+	protected static TResult BadRequest<TResult>(string? errorMessage = null) where TResult : OperationResponse, new() => new() { StatusCode = HttpStatusCode.BadRequest, Result = errorMessage };
+
+	protected static TResult NotFound<TResult>(string? errorMessage = null) where TResult : OperationResponse, new() => new() { StatusCode = HttpStatusCode.NotFound, Result = errorMessage };
+
+	protected static TResult InternalServerError<TResult>(string? errorMessage = null) where TResult : OperationResponse, new() => new() { StatusCode = HttpStatusCode.InternalServerError, Result = errorMessage };
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/PostConfigurations/CashierPostConfiguration.cs

@@ -0,0 +1,10 @@
+namespace CatHasPawsContratcs.Infrastructure.PostConfigurations;
+
+public class CashierPostConfiguration : PostConfiguration
+{
+	public override string Type => nameof(CashierPostConfiguration);
+
+	public double SalePercent { get; set; }
+
+	public double BonusForExtraSales { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/PostConfigurations/PostConfiguration.cs

@@ -0,0 +1,8 @@
+namespace CatHasPawsContratcs.Infrastructure.PostConfigurations;
+
+public class PostConfiguration
+{
+	public virtual string Type => nameof(PostConfiguration);
+
+	public double Rate { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/Infrastructure/PostConfigurations/SupervisorPostConfiguration.cs

@@ -0,0 +1,8 @@
+namespace CatHasPawsContratcs.Infrastructure.PostConfigurations;
+
+public class SupervisorPostConfiguration : PostConfiguration
+{
+	public override string Type => nameof(SupervisorPostConfiguration);
+
+	public double PersonalCountTrendPremium { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/IBuyerStorageContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface IBuyerStorageContract
+{
+	List<BuyerDataModel> GetList();
+
+	BuyerDataModel? GetElementById(string id);
+
+	BuyerDataModel? GetElementByPhoneNumber(string phoneNumber);
+
+	BuyerDataModel? GetElementByFIO(string fio);
+
+	void AddElement(BuyerDataModel buyerDataModel);
+
+	void UpdElement(BuyerDataModel buyerDataModel);
+
+	void DelElement(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/IManufacturerStorageContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface IManufacturerStorageContract
+{
+	List<ManufacturerDataModel> GetList();
+
+	ManufacturerDataModel? GetElementById(string id);
+
+	ManufacturerDataModel? GetElementByName(string name);
+
+	ManufacturerDataModel? GetElementByOldName(string name);
+
+	void AddElement(ManufacturerDataModel manufacturerDataModel);
+
+	void UpdElement(ManufacturerDataModel manufacturerDataModel);
+
+	void DelElement(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/IPostStorageContract.cs

@@ -0,0 +1,22 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface IPostStorageContract
+{
+	List<PostDataModel> GetList();
+
+	List<PostDataModel> GetPostWithHistory(string postId);
+
+	PostDataModel? GetElementById(string id);
+
+	PostDataModel? GetElementByName(string name);
+
+	void AddElement(PostDataModel postDataModel);
+
+	void UpdElement(PostDataModel postDataModel);
+
+	void DelElement(string id);
+
+	void ResElement(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/IProductStorageContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface IProductStorageContract
+{
+	List<ProductDataModel> GetList(bool onlyActive = true, string? manufacturerId = null);
+
+	List<ProductHistoryDataModel> GetHistoryByProductId(string productId);
+
+	ProductDataModel? GetElementById(string id);
+
+	ProductDataModel? GetElementByName(string name);
+
+	void AddElement(ProductDataModel productDataModel);
+
+	void UpdElement(ProductDataModel productDataModel);
+
+	void DelElement(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/ISalaryStorageContract.cs

@@ -0,0 +1,10 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface ISalaryStorageContract
+{
+	List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null);
+
+	void AddElement(SalaryDataModel salaryDataModel);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/ISaleStorageContract.cs

@@ -0,0 +1,14 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface ISaleStorageContract
+{
+	List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? buyerId = null, string? productId = null);
+
+	SaleDataModel? GetElementById(string id);
+
+	void AddElement(SaleDataModel saleDataModel);
+
+	void DelElement(string id);
+}

TheCatHasPawsProject/CatHasPawsContratcs/StoragesContracts/IWorkerStorageContract.cs

@@ -0,0 +1,20 @@
+using CatHasPawsContratcs.DataModels;
+
+namespace CatHasPawsContratcs.StoragesContracts;
+
+public interface IWorkerStorageContract
+{
+	List<WorkerDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null);
+
+	WorkerDataModel? GetElementById(string id);
+
+	WorkerDataModel? GetElementByFIO(string fio);
+
+	void AddElement(WorkerDataModel workerDataModel);
+
+	void UpdElement(WorkerDataModel workerDataModel);
+
+	void DelElement(string id);
+
+	int GetWorkerTrend(DateTime fromPeriod, DateTime toPeriod);
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/BuyerViewModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class BuyerViewModel
+{
+	public required string Id { get; set; }
+
+	public required string FIO { get; set; }
+
+	public required string PhoneNumber { get; set; }
+
+	public double DiscountSize { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/ManufacturerViewModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class ManufacturerViewModel
+{
+	public required string Id { get; set; }
+
+	public required string ManufacturerName { get; set; }
+
+	public string? PrevManufacturerName { get; set; }
+
+	public string? PrevPrevManufacturerName { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/PostViewModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class PostViewModel
+{
+	public required string Id { get; set; }
+
+	public required string PostName { get; set; }
+
+	public required string PostType { get; set; }
+
+	public required string Configuration { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/ProductHistoryViewModel.cs

@@ -0,0 +1,10 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class ProductHistoryViewModel
+{
+	public required string ProductName { get; set; }
+
+	public double OldPrice { get; set; }
+
+	public DateTime ChangeDate { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/ProductViewModel.cs

@@ -0,0 +1,18 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class ProductViewModel
+{
+	public required string Id { get; set; }
+
+	public required string ProductName { get; set; }
+
+	public required string ManufacturerId { get; set; }
+
+	public required string ManufacturerName { get; set; }
+
+	public required string ProductType { get; set; }
+
+	public double Price { get; set; }
+
+	public bool IsDeleted { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/SaleProductViewModel.cs

@@ -0,0 +1,12 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class SaleProductViewModel
+{
+	public required string ProductId { get; set; }
+
+	public required string ProductName { get; set; }
+
+	public int Count { get; set; }
+
+	public double Price { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/SaleViewModel.cs

@@ -0,0 +1,26 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class SaleViewModel
+{
+	public required string Id { get; set; }
+
+	public required string WorkerId { get; set; }
+
+	public required string WorkerFIO { get; set; }
+
+	public string? BuyerId { get; set; }
+
+	public string? BuyerFIO { get; set; }
+
+	public DateTime SaleDate { get; set; }
+
+	public double Sum { get; set; }
+
+	public required string DiscountType { get; set; }
+
+	public double Discount { get; set; }
+
+	public bool IsCancel { get; set; }
+
+	public required List<SaleProductViewModel> Products { get; set; }
+}

TheCatHasPawsProject/CatHasPawsContratcs/ViewModels/WorkerViewModel.cs

@@ -0,0 +1,18 @@
+namespace CatHasPawsContratcs.ViewModels;
+
+public class WorkerViewModel
+{
+	public required string Id { get; set; }
+
+	public required string FIO { get; set; }
+
+	public required string PostId { get; set; }
+
+	public required string PostName { get; set; }
+
+	public bool IsDeleted { get; set; }
+
+	public DateTime BirthDate { get; set; }
+
+	public DateTime EmploymentDate { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/CatHasPawsDatabase.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CatHasPawsContratcs\CatHasPawsContratcs.csproj" />
+  </ItemGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="CatHasPawsTests" />
+		<InternalsVisibleTo Include="CatHasPawsWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+</Project>

TheCatHasPawsProject/CatHasPawsDatabase/CatHasPawsDbContext.cs

@@ -0,0 +1,99 @@
+using CatHasPawsContratcs.Infrastructure;
+using CatHasPawsContratcs.Infrastructure.PostConfigurations;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace CatHasPawsDatabase;
+
+internal class CatHasPawsDbContext : DbContext
+{
+	private readonly IConfigurationDatabase? _configurationDatabase;
+
+	public CatHasPawsDbContext(IConfigurationDatabase configurationDatabase)
+	{
+		_configurationDatabase = configurationDatabase;
+		AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+		AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+	}
+
+	protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+	{
+		optionsBuilder.UseNpgsql(_configurationDatabase?.ConnectionString, o => o.SetPostgresVersion(12, 2));
+		base.OnConfiguring(optionsBuilder);
+	}
+
+	protected override void OnModelCreating(ModelBuilder modelBuilder)
+	{
+		base.OnModelCreating(modelBuilder);
+
+		modelBuilder.Entity<Buyer>().HasIndex(x => x.PhoneNumber).IsUnique();
+
+		modelBuilder.Entity<Sale>()
+			.HasOne(e => e.Buyer)
+			.WithMany(e => e.Sales)
+			.OnDelete(DeleteBehavior.SetNull);
+
+		modelBuilder.Entity<Manufacturer>().HasIndex(x => x.ManufacturerName).IsUnique();
+
+		modelBuilder.Entity<Post>()
+			.HasIndex(e => new { e.PostName, e.IsActual })
+			.IsUnique()
+			.HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+		modelBuilder.Entity<Post>()
+			.HasIndex(e => new { e.PostId, e.IsActual })
+			.IsUnique()
+			.HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+		modelBuilder.Entity<Product>()
+			.HasIndex(x => new { x.ProductName, x.IsDeleted })
+			.IsUnique()
+			.HasFilter($"\"{nameof(Product.IsDeleted)}\" = FALSE");
+
+		modelBuilder
+			.Entity<Product>()
+			.HasOne(e => e.Manufacturer)
+			.WithMany(e => e.Products)
+			.OnDelete(DeleteBehavior.Restrict);
+
+		modelBuilder.Entity<SaleProduct>().HasKey(x => new { x.SaleId, x.ProductId });
+
+		modelBuilder.Entity<Post>()
+			.Property(x => x.Configuration)
+			.HasColumnType("jsonb")
+			.HasConversion(
+				x => SerializePostConfiguration(x),
+				x => DeserialzePostConfiguration(x)
+			);
+	}
+
+	public DbSet<Buyer> Buyers { get; set; }
+
+	public DbSet<Manufacturer> Manufacturers { get; set; }
+
+	public DbSet<Post> Posts { get; set; }
+
+	public DbSet<Product> Products { get; set; }
+
+	public DbSet<ProductHistory> ProductHistories { get; set; }
+
+	public DbSet<Salary> Salaries { get; set; }
+
+	public DbSet<Sale> Sales { get; set; }
+
+	public DbSet<SaleProduct> SaleProducts { get; set; }
+
+	public DbSet<Worker> Workers { get; set; }
+
+	private static string SerializePostConfiguration(PostConfiguration postConfiguration) => JsonConvert.SerializeObject(postConfiguration);
+
+	private static PostConfiguration DeserialzePostConfiguration(string jsonString) => JToken.Parse(jsonString).Value<string>("Type") switch
+	{
+		nameof(CashierPostConfiguration) => JsonConvert.DeserializeObject<CashierPostConfiguration>(jsonString)!,
+		nameof(SupervisorPostConfiguration) => JsonConvert.DeserializeObject<SupervisorPostConfiguration>(jsonString)!,
+		_ => JsonConvert.DeserializeObject<PostConfiguration>(jsonString)!,
+	};
+
+}

TheCatHasPawsProject/CatHasPawsDatabase/DefaultConfigurationDatabase.cs

@@ -0,0 +1,8 @@
+using CatHasPawsContratcs.Infrastructure;
+
+namespace CatHasPawsDatabase;
+
+class DefaultConfigurationDatabase : IConfigurationDatabase
+{
+	public string ConnectionString => "";
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/BuyerStorageContract.cs

@@ -0,0 +1,149 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class BuyerStorageContract : IBuyerStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public BuyerStorageContract(CatHasPawsDbContext catHasPawsDbContext)
+	{
+		_dbContext = catHasPawsDbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Buyer, BuyerDataModel>();
+			cfg.CreateMap<BuyerDataModel, Buyer>();
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<BuyerDataModel> GetList()
+	{
+		try
+		{
+			return [.. _dbContext.Buyers.Select(x => _mapper.Map<BuyerDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public BuyerDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<BuyerDataModel>(GetBuyerById(id));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public BuyerDataModel? GetElementByFIO(string fio)
+	{
+		try
+		{
+			return _mapper.Map<BuyerDataModel>(_dbContext.Buyers.FirstOrDefault(x => x.FIO == fio));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public BuyerDataModel? GetElementByPhoneNumber(string phoneNumber)
+	{
+		try
+		{
+			return _mapper.Map<BuyerDataModel>(_dbContext.Buyers.FirstOrDefault(x => x.PhoneNumber == phoneNumber));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(BuyerDataModel buyerDataModel)
+	{
+		try
+		{
+			_dbContext.Buyers.Add(_mapper.Map<Buyer>(buyerDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("Id", buyerDataModel.Id);
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Buyers_PhoneNumber" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("PhoneNumber", buyerDataModel.PhoneNumber);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void UpdElement(BuyerDataModel buyerDataModel)
+	{
+		try
+		{
+			var element = GetBuyerById(buyerDataModel.Id) ?? throw new ElementNotFoundException(buyerDataModel.Id);
+			_dbContext.Buyers.Update(_mapper.Map(buyerDataModel, element));
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Buyers_PhoneNumber" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("PhoneNumber", buyerDataModel.PhoneNumber);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetBuyerById(id) ?? throw new ElementNotFoundException(id);
+			_dbContext.Buyers.Remove(element);
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	private Buyer? GetBuyerById(string id) => _dbContext.Buyers.FirstOrDefault(x => x.Id == id);
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/ManufacturerStorageContract.cs

@@ -0,0 +1,156 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class ManufacturerStorageContract : IManufacturerStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public ManufacturerStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Manufacturer, ManufacturerDataModel>();
+			cfg.CreateMap<ManufacturerDataModel, Manufacturer>();
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<ManufacturerDataModel> GetList()
+	{
+		try
+		{
+			return [.. _dbContext.Manufacturers.Select(x => _mapper.Map<ManufacturerDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public ManufacturerDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<ManufacturerDataModel>(GetManufacturerById(id));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public ManufacturerDataModel? GetElementByName(string name)
+	{
+		try
+		{
+			return _mapper.Map<ManufacturerDataModel>(_dbContext.Manufacturers.FirstOrDefault(x => x.ManufacturerName == name));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public ManufacturerDataModel? GetElementByOldName(string name)
+	{
+		try
+		{
+			return _mapper.Map<ManufacturerDataModel>(_dbContext.Manufacturers.FirstOrDefault(x => x.PrevManufacturerName == name ||
+				x.PrevPrevManufacturerName == name));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(ManufacturerDataModel manufacturerDataModel)
+	{
+		try
+		{
+			_dbContext.Manufacturers.Add(_mapper.Map<Manufacturer>(manufacturerDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("Id", manufacturerDataModel.Id);
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Manufacturers_ManufacturerName" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("ManufacturerName", manufacturerDataModel.ManufacturerName);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void UpdElement(ManufacturerDataModel manufacturerDataModel)
+	{
+		try
+		{
+			var element = GetManufacturerById(manufacturerDataModel.Id) ?? throw new ElementNotFoundException(manufacturerDataModel.Id);
+			if (element.ManufacturerName != manufacturerDataModel.ManufacturerName)
+			{
+				element.PrevPrevManufacturerName = element.PrevManufacturerName;
+				element.PrevManufacturerName = element.ManufacturerName;
+				element.ManufacturerName = manufacturerDataModel.ManufacturerName;
+			}
+			_dbContext.Manufacturers.Update(element);
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Manufacturers_ManufacturerName" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("ManufacturerName", manufacturerDataModel.ManufacturerName);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetManufacturerById(id) ?? throw new ElementNotFoundException(id);
+			_dbContext.Manufacturers.Remove(element);
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	private Manufacturer? GetManufacturerById(string id) => _dbContext.Manufacturers.FirstOrDefault(x => x.Id == id);
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/PostStorageContract.cs

@@ -0,0 +1,186 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class PostStorageContract : IPostStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public PostStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Post, PostDataModel>()
+				.ForMember(x => x.Id, x => x.MapFrom(src => src.PostId));
+			cfg.CreateMap<PostDataModel, Post>()
+				.ForMember(x => x.Id, x => x.Ignore())
+				.ForMember(x => x.PostId, x => x.MapFrom(src => src.Id))
+				.ForMember(x => x.IsActual, x => x.MapFrom(src => true))
+				.ForMember(x => x.ChangeDate, x => x.MapFrom(src => DateTime.UtcNow))
+				.ForMember(x => x.Configuration, x => x.MapFrom(src => src.ConfigurationModel));
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<PostDataModel> GetList()
+	{
+		try
+		{
+			return [.. _dbContext.Posts.Select(x => _mapper.Map<PostDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public List<PostDataModel> GetPostWithHistory(string postId)
+	{
+		try
+		{
+			return [.. _dbContext.Posts.Where(x => x.PostId == postId).Select(x => _mapper.Map<PostDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public PostDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostId == id && x.IsActual));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public PostDataModel? GetElementByName(string name)
+	{
+		try
+		{
+			return _mapper.Map<PostDataModel>(_dbContext.Posts.FirstOrDefault(x => x.PostName == name && x.IsActual));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(PostDataModel postDataModel)
+	{
+		try
+		{
+			_dbContext.Posts.Add(_mapper.Map<Post>(postDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("PostName", postDataModel.PostName);
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostId_IsActual" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("PostId", postDataModel.Id);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void UpdElement(PostDataModel postDataModel)
+	{
+		try
+		{
+			var transaction = _dbContext.Database.BeginTransaction();
+			try
+			{
+				var element = GetPostById(postDataModel.Id) ?? throw new ElementNotFoundException(postDataModel.Id);
+				if (!element.IsActual)
+				{
+					throw new ElementDeletedException(postDataModel.Id);
+				}
+				element.IsActual = false;
+				_dbContext.SaveChanges();
+				var newElement = _mapper.Map<Post>(postDataModel);
+				_dbContext.Posts.Add(newElement);
+				_dbContext.SaveChanges();
+				transaction.Commit();
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Posts_PostName_IsActual" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("PostName", postDataModel.PostName);
+		}
+		catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+			if (!element.IsActual)
+			{
+				throw new ElementDeletedException(id);
+			}
+			element.IsActual = false;
+			_dbContext.SaveChanges();
+		}
+		catch
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+	}
+
+	public void ResElement(string id)
+	{
+		try
+		{
+			var element = GetPostById(id) ?? throw new ElementNotFoundException(id);
+			element.IsActual = true;
+			_dbContext.SaveChanges();
+		}
+		catch
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+	}
+
+	private Post? GetPostById(string id) => _dbContext.Posts.Where(x => x.PostId == id).OrderByDescending(x => x.ChangeDate).FirstOrDefault();
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/ProductStorageContract.cs

@@ -0,0 +1,176 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class ProductStorageContract : IProductStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public ProductStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Manufacturer, ManufacturerDataModel>();
+			cfg.CreateMap<Product, ProductDataModel>();
+			cfg.CreateMap<ProductDataModel, Product>()
+				.ForMember(x => x.IsDeleted, x => x.MapFrom(src => false));
+			cfg.CreateMap<ProductHistory, ProductHistoryDataModel>();
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<ProductDataModel> GetList(bool onlyActive = true, string? manufacturerId = null)
+	{
+		try
+		{
+			var query = _dbContext.Products.Include(x => x.Manufacturer).AsQueryable();
+			if (onlyActive)
+			{
+				query = query.Where(x => !x.IsDeleted);
+			}
+			if (manufacturerId is not null)
+			{
+				query = query.Where(x => x.ManufacturerId == manufacturerId);
+			}
+			return [.. query.Select(x => _mapper.Map<ProductDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public List<ProductHistoryDataModel> GetHistoryByProductId(string productId)
+	{
+		try
+		{
+			return [.. _dbContext.ProductHistories.Include(x => x.Product).Where(x => x.ProductId == productId).OrderByDescending(x => x.ChangeDate).Select(x => _mapper.Map<ProductHistoryDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public ProductDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<ProductDataModel>(GetProductById(id));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public ProductDataModel? GetElementByName(string name)
+	{
+		try
+		{
+			return _mapper.Map<ProductDataModel>(_dbContext.Products.Include(x => x.Manufacturer).FirstOrDefault(x => x.ProductName == name && !x.IsDeleted));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(ProductDataModel productDataModel)
+	{
+		try
+		{
+			_dbContext.Products.Add(_mapper.Map<Product>(productDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("Id", productDataModel.Id);
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Products_ProductName_IsDeleted" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("ProductName", productDataModel.ProductName);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void UpdElement(ProductDataModel productDataModel)
+	{
+		try
+		{
+			var transaction = _dbContext.Database.BeginTransaction();
+			try
+			{
+				var element = GetProductById(productDataModel.Id) ?? throw new ElementNotFoundException(productDataModel.Id);
+				if (element.Price != productDataModel.Price)
+				{
+					_dbContext.ProductHistories.Add(new ProductHistory() { ProductId = element.Id, OldPrice = element.Price });
+					_dbContext.SaveChanges();
+				}
+				_dbContext.Products.Update(_mapper.Map(productDataModel, element));
+				_dbContext.SaveChanges();
+				transaction.Commit();
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+		catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Products_ProductName_IsDeleted" })
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("ProductName", productDataModel.ProductName);
+		}
+		catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetProductById(id) ?? throw new ElementNotFoundException(id);
+			element.IsDeleted = true;
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	private Product? GetProductById(string id) => _dbContext.Products.Include(x => x.Manufacturer).FirstOrDefault(x => x.Id == id && !x.IsDeleted);
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/SalaryStorageContract.cs

@@ -0,0 +1,57 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class SalaryStorageContract : ISalaryStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public SalaryStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Salary, SalaryDataModel>();
+			cfg.CreateMap<SalaryDataModel, Salary>()
+				.ForMember(dest => dest.WorkerSalary, opt => opt.MapFrom(src => src.Salary));
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workerId = null)
+	{
+		try
+		{
+			var query = _dbContext.Salaries.Where(x => x.SalaryDate >= startDate && x.SalaryDate <= endDate);
+			if (workerId is not null)
+			{
+				query = query.Where(x => x.WorkerId == workerId);
+			}
+			return [.. query.Select(x => _mapper.Map<SalaryDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(SalaryDataModel salaryDataModel)
+	{
+		try
+		{
+			_dbContext.Salaries.Add(_mapper.Map<Salary>(salaryDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/SaleStorageContract.cs

@@ -0,0 +1,116 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class SaleStorageContract : ISaleStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public SaleStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Manufacturer, ManufacturerDataModel>();
+			cfg.CreateMap<Buyer, BuyerDataModel>();
+			cfg.CreateMap<Product, ProductDataModel>();
+			cfg.CreateMap<Worker, WorkerDataModel>();
+			cfg.CreateMap<SaleProduct, SaleProductDataModel>();
+			cfg.CreateMap<SaleProductDataModel, SaleProduct>();
+			cfg.CreateMap<Sale, SaleDataModel>();
+			cfg.CreateMap<SaleDataModel, Sale>()
+				.ForMember(x => x.IsCancel, x => x.MapFrom(src => false))
+				.ForMember(x => x.SaleProducts, x => x.MapFrom(src => src.Products));
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? buyerId = null, string? productId = null)
+	{
+		try
+		{
+			var query = _dbContext.Sales.Include(x => x.Buyer).Include(x => x.Worker).Include(x => x.SaleProducts)!.ThenInclude(x => x.Product).AsQueryable();
+			if (startDate is not null && endDate is not null)
+			{
+				query = query.Where(x => x.SaleDate >= startDate && x.SaleDate < endDate);
+			}
+			if (workerId is not null)
+			{
+				query = query.Where(x => x.WorkerId == workerId);
+			}
+			if (buyerId is not null)
+			{
+				query = query.Where(x => x.BuyerId == buyerId);
+			}
+			if (productId is not null)
+			{
+				query = query.Where(x => x.SaleProducts!.Any(y => y.ProductId == productId));
+			}
+			return [.. query.Select(x => _mapper.Map<SaleDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public SaleDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<SaleDataModel>(GetSaleById(id));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(SaleDataModel saleDataModel)
+	{
+		try
+		{
+			_dbContext.Sales.Add(_mapper.Map<Sale>(saleDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetSaleById(id) ?? throw new ElementNotFoundException(id);
+			if (element.IsCancel)
+			{
+				throw new ElementDeletedException(id);
+			}
+			element.IsCancel = true;
+			_dbContext.SaveChanges();
+		}
+		catch (Exception ex) when (ex is ElementDeletedException || ex is ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	private Sale? GetSaleById(string id) => _dbContext.Sales.Include(x => x.Buyer).Include(x => x.Worker).Include(x => x.SaleProducts)!.ThenInclude(x => x.Product).FirstOrDefault(x => x.Id == id);
+}

TheCatHasPawsProject/CatHasPawsDatabase/Implementations/WorkerStorageContract.cs

@@ -0,0 +1,166 @@
+using AutoMapper;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using CatHasPawsDatabase.Models;
+
+namespace CatHasPawsDatabase.Implementations;
+
+internal class WorkerStorageContract : IWorkerStorageContract
+{
+	private readonly CatHasPawsDbContext _dbContext;
+	private readonly Mapper _mapper;
+
+	public WorkerStorageContract(CatHasPawsDbContext dbContext)
+	{
+		_dbContext = dbContext;
+		var config = new MapperConfiguration(cfg =>
+		{
+			cfg.CreateMap<Post, PostDataModel>()
+				.ForMember(x => x.Id, x => x.MapFrom(src => src.PostId));
+			cfg.CreateMap<Worker, WorkerDataModel>();
+			cfg.CreateMap<WorkerDataModel, Worker>();
+		});
+		_mapper = new Mapper(config);
+	}
+
+	public List<WorkerDataModel> GetList(bool onlyActive = true, string? postId = null, DateTime? fromBirthDate = null, DateTime? toBirthDate = null, DateTime? fromEmploymentDate = null, DateTime? toEmploymentDate = null)
+	{
+		try
+		{
+			var query = _dbContext.Workers.AsQueryable();
+			if (onlyActive)
+			{
+				query = query.Where(x => !x.IsDeleted);
+			}
+			if (postId is not null)
+			{
+				query = query.Where(x => x.PostId == postId);
+			}
+			if (fromBirthDate is not null && toBirthDate is not null)
+			{
+				query = query.Where(x => x.BirthDate >= fromBirthDate && x.BirthDate <= toBirthDate);
+			}
+			if (fromEmploymentDate is not null && toEmploymentDate is not null)
+			{
+				query = query.Where(x => x.EmploymentDate >= fromEmploymentDate && x.EmploymentDate <= toEmploymentDate);
+			}
+			return [.. JoinPost(query).Select(x => _mapper.Map<WorkerDataModel>(x))];
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public WorkerDataModel? GetElementById(string id)
+	{
+		try
+		{
+			return _mapper.Map<WorkerDataModel>(GetWorkerById(id));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public WorkerDataModel? GetElementByFIO(string fio)
+	{
+		try
+		{
+			return _mapper.Map<WorkerDataModel>(AddPost(_dbContext.Workers.FirstOrDefault(x => x.FIO == fio && !x.IsDeleted)));
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void AddElement(WorkerDataModel workerDataModel)
+	{
+		try
+		{
+			_dbContext.Workers.Add(_mapper.Map<Worker>(workerDataModel));
+			_dbContext.SaveChanges();
+		}
+		catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new ElementExistsException("Id", workerDataModel.Id);
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void UpdElement(WorkerDataModel workerDataModel)
+	{
+		try
+		{
+			var element = GetWorkerById(workerDataModel.Id) ?? throw new ElementNotFoundException(workerDataModel.Id);
+			_dbContext.Workers.Update(_mapper.Map(workerDataModel, element));
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public void DelElement(string id)
+	{
+		try
+		{
+			var element = GetWorkerById(id) ?? throw new ElementNotFoundException(id);
+			element.IsDeleted = true;
+			element.DateOfDelete = DateTime.UtcNow;
+			_dbContext.SaveChanges();
+		}
+		catch (ElementNotFoundException)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	public int GetWorkerTrend(DateTime fromPeriod, DateTime toPeriod)
+	{
+		try
+		{
+			var countWorkersOnBegining = _dbContext.Workers.Count(x => x.EmploymentDate < fromPeriod && (!x.IsDeleted || x.DateOfDelete > fromPeriod));
+			var countWorkersOnEnding = _dbContext.Workers.Count(x => x.EmploymentDate < toPeriod && (!x.IsDeleted || x.DateOfDelete > toPeriod));
+			return countWorkersOnEnding - countWorkersOnBegining;
+		}
+		catch (Exception ex)
+		{
+			_dbContext.ChangeTracker.Clear();
+			throw new StorageException(ex);
+		}
+	}
+
+	private Worker? GetWorkerById(string id) => AddPost(_dbContext.Workers.FirstOrDefault(x => x.Id == id && !x.IsDeleted));
+
+	private IQueryable<Worker> JoinPost(IQueryable<Worker> query)
+		=> query.GroupJoin(_dbContext.Posts.Where(x => x.IsActual), x => x.PostId, y => y.PostId, (x, y) => new { Worker = x, Post = y })
+				.SelectMany(xy => xy.Post.DefaultIfEmpty(), (x, y) => x.Worker.AddPost(y));
+
+	private Worker? AddPost(Worker? worker)
+		=> worker?.AddPost(_dbContext.Posts.FirstOrDefault(x => x.PostId == worker.PostId && x.IsActual));
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250327150147_FirstMigration.Designer.cs

@@ -0,0 +1,375 @@
+// <auto-generated />
+using System;
+using CatHasPawsDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    [DbContext(typeof(CatHasPawsDbContext))]
+    [Migration("20250327150147_FirstMigration")]
+    partial class FirstMigration
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<double>("DiscountSize")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneNumber")
+                        .IsUnique();
+
+                    b.ToTable("Buyers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ManufacturerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerName")
+                        .IsUnique();
+
+                    b.ToTable("Manufacturers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Post", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<bool>("IsActual")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PostName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("PostType")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Salary")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PostId", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.HasIndex("PostName", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.ToTable("Posts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("ProductType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductHistories");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SalaryDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("WorkerSalary")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Salaries");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Discount")
+                        .HasColumnType("double precision");
+
+                    b.Property<int>("DiscountType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("SaleDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuyerId");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProductId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("SaleId", "ProductId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Manufacturer", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CatHasPawsDatabase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250327150147_FirstMigration.cs

@@ -0,0 +1,288 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    /// <inheritdoc />
+    public partial class FirstMigration : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Buyers",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    FIO = table.Column<string>(type: "text", nullable: false),
+                    PhoneNumber = table.Column<string>(type: "text", nullable: false),
+                    DiscountSize = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Buyers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Manufacturers",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    ManufacturerName = table.Column<string>(type: "text", nullable: false),
+                    PrevManufacturerName = table.Column<string>(type: "text", nullable: true),
+                    PrevPrevManufacturerName = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Manufacturers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Posts",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    PostId = table.Column<string>(type: "text", nullable: false),
+                    PostName = table.Column<string>(type: "text", nullable: false),
+                    PostType = table.Column<int>(type: "integer", nullable: false),
+                    Salary = table.Column<double>(type: "double precision", nullable: false),
+                    IsActual = table.Column<bool>(type: "boolean", nullable: false),
+                    ChangeDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Posts", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Workers",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    FIO = table.Column<string>(type: "text", nullable: false),
+                    PostId = table.Column<string>(type: "text", nullable: false),
+                    BirthDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    EmploymentDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    IsDeleted = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Workers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Products",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    ProductName = table.Column<string>(type: "text", nullable: false),
+                    ProductType = table.Column<int>(type: "integer", nullable: false),
+                    ManufacturerId = table.Column<string>(type: "text", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false),
+                    IsDeleted = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Products", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Products_Manufacturers_ManufacturerId",
+                        column: x => x.ManufacturerId,
+                        principalTable: "Manufacturers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Salaries",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    WorkerId = table.Column<string>(type: "text", nullable: false),
+                    SalaryDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    WorkerSalary = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Salaries", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Salaries_Workers_WorkerId",
+                        column: x => x.WorkerId,
+                        principalTable: "Workers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Sales",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    WorkerId = table.Column<string>(type: "text", nullable: false),
+                    BuyerId = table.Column<string>(type: "text", nullable: true),
+                    SaleDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    Sum = table.Column<double>(type: "double precision", nullable: false),
+                    DiscountType = table.Column<int>(type: "integer", nullable: false),
+                    Discount = table.Column<double>(type: "double precision", nullable: false),
+                    IsCancel = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Sales", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Sales_Buyers_BuyerId",
+                        column: x => x.BuyerId,
+                        principalTable: "Buyers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.SetNull);
+                    table.ForeignKey(
+                        name: "FK_Sales_Workers_WorkerId",
+                        column: x => x.WorkerId,
+                        principalTable: "Workers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ProductHistories",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    ProductId = table.Column<string>(type: "text", nullable: false),
+                    OldPrice = table.Column<double>(type: "double precision", nullable: false),
+                    ChangeDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ProductHistories", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ProductHistories_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "SaleProducts",
+                columns: table => new
+                {
+                    SaleId = table.Column<string>(type: "text", nullable: false),
+                    ProductId = table.Column<string>(type: "text", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SaleProducts", x => new { x.SaleId, x.ProductId });
+                    table.ForeignKey(
+                        name: "FK_SaleProducts_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_SaleProducts_Sales_SaleId",
+                        column: x => x.SaleId,
+                        principalTable: "Sales",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Buyers_PhoneNumber",
+                table: "Buyers",
+                column: "PhoneNumber",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Manufacturers_ManufacturerName",
+                table: "Manufacturers",
+                column: "ManufacturerName",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Posts_PostId_IsActual",
+                table: "Posts",
+                columns: new[] { "PostId", "IsActual" },
+                unique: true,
+                filter: "\"IsActual\" = TRUE");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Posts_PostName_IsActual",
+                table: "Posts",
+                columns: new[] { "PostName", "IsActual" },
+                unique: true,
+                filter: "\"IsActual\" = TRUE");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductHistories_ProductId",
+                table: "ProductHistories",
+                column: "ProductId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Products_ManufacturerId",
+                table: "Products",
+                column: "ManufacturerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Products_ProductName_IsDeleted",
+                table: "Products",
+                columns: new[] { "ProductName", "IsDeleted" },
+                unique: true,
+                filter: "\"IsDeleted\" = FALSE");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Salaries_WorkerId",
+                table: "Salaries",
+                column: "WorkerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SaleProducts_ProductId",
+                table: "SaleProducts",
+                column: "ProductId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Sales_BuyerId",
+                table: "Sales",
+                column: "BuyerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Sales_WorkerId",
+                table: "Sales",
+                column: "WorkerId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Posts");
+
+            migrationBuilder.DropTable(
+                name: "ProductHistories");
+
+            migrationBuilder.DropTable(
+                name: "Salaries");
+
+            migrationBuilder.DropTable(
+                name: "SaleProducts");
+
+            migrationBuilder.DropTable(
+                name: "Products");
+
+            migrationBuilder.DropTable(
+                name: "Sales");
+
+            migrationBuilder.DropTable(
+                name: "Manufacturers");
+
+            migrationBuilder.DropTable(
+                name: "Buyers");
+
+            migrationBuilder.DropTable(
+                name: "Workers");
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250327155650_ChangeFieldsInPost.Designer.cs

@@ -0,0 +1,376 @@
+// <auto-generated />
+using System;
+using CatHasPawsDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    [DbContext(typeof(CatHasPawsDbContext))]
+    [Migration("20250327155650_ChangeFieldsInPost")]
+    partial class ChangeFieldsInPost
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<double>("DiscountSize")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneNumber")
+                        .IsUnique();
+
+                    b.ToTable("Buyers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ManufacturerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerName")
+                        .IsUnique();
+
+                    b.ToTable("Manufacturers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Post", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Configuration")
+                        .IsRequired()
+                        .HasColumnType("jsonb");
+
+                    b.Property<bool>("IsActual")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PostName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("PostType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PostId", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.HasIndex("PostName", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.ToTable("Posts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("ProductType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductHistories");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SalaryDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("WorkerSalary")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Salaries");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Discount")
+                        .HasColumnType("double precision");
+
+                    b.Property<int>("DiscountType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("SaleDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuyerId");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProductId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("SaleId", "ProductId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Manufacturer", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CatHasPawsDatabase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250327155650_ChangeFieldsInPost.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    /// <inheritdoc />
+    public partial class ChangeFieldsInPost : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Salary",
+                table: "Posts");
+
+            migrationBuilder.AddColumn<string>(
+                name: "Configuration",
+                table: "Posts",
+                type: "jsonb",
+                nullable: false,
+                defaultValue: "{\"Rate\": 0, \"Type\": \"PostConfiguration\"}");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Configuration",
+                table: "Posts");
+
+            migrationBuilder.AddColumn<double>(
+                name: "Salary",
+                table: "Posts",
+                type: "double precision",
+                nullable: false,
+                defaultValue: 0.0);
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250328162321_AddDateOfDeleteInWorker.Designer.cs

@@ -0,0 +1,379 @@
+// <auto-generated />
+using System;
+using CatHasPawsDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    [DbContext(typeof(CatHasPawsDbContext))]
+    [Migration("20250328162321_AddDateOfDeleteInWorker")]
+    partial class AddDateOfDeleteInWorker
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<double>("DiscountSize")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneNumber")
+                        .IsUnique();
+
+                    b.ToTable("Buyers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ManufacturerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerName")
+                        .IsUnique();
+
+                    b.ToTable("Manufacturers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Post", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Configuration")
+                        .IsRequired()
+                        .HasColumnType("jsonb");
+
+                    b.Property<bool>("IsActual")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PostName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("PostType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PostId", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.HasIndex("PostName", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.ToTable("Posts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("ProductType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductHistories");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SalaryDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("WorkerSalary")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Salaries");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Discount")
+                        .HasColumnType("double precision");
+
+                    b.Property<int>("DiscountType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("SaleDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuyerId");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProductId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("SaleId", "ProductId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime?>("DateOfDelete")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Manufacturer", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CatHasPawsDatabase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/20250328162321_AddDateOfDeleteInWorker.cs

@@ -0,0 +1,29 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddDateOfDeleteInWorker : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<DateTime>(
+                name: "DateOfDelete",
+                table: "Workers",
+                type: "timestamp without time zone",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "DateOfDelete",
+                table: "Workers");
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Migrations/CatHasPawsDbContextModelSnapshot.cs

@@ -0,0 +1,376 @@
+// <auto-generated />
+using System;
+using CatHasPawsDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CatHasPawsDatabase.Migrations
+{
+    [DbContext(typeof(CatHasPawsDbContext))]
+    partial class CatHasPawsDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<double>("DiscountSize")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneNumber")
+                        .IsUnique();
+
+                    b.ToTable("Buyers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ManufacturerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevManufacturerName")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerName")
+                        .IsUnique();
+
+                    b.ToTable("Manufacturers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Post", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Configuration")
+                        .IsRequired()
+                        .HasColumnType("jsonb");
+
+                    b.Property<bool>("IsActual")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PostName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("PostType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PostId", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.HasIndex("PostName", "IsActual")
+                        .IsUnique()
+                        .HasFilter("\"IsActual\" = TRUE");
+
+                    b.ToTable("Posts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("ProductType")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductHistories");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SalaryDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("WorkerSalary")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Salaries");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Discount")
+                        .HasColumnType("double precision");
+
+                    b.Property<int>("DiscountType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("SaleDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("WorkerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuyerId");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProductId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("SaleId", "ProductId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime?>("DateOfDelete")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("FIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("PostId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Manufacturer", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("CatHasPawsDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("CatHasPawsDatabase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CatHasPawsDatabase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Manufacturer", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("CatHasPawsDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Buyer.cs

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Buyer
+{
+	public required string Id { get; set; }
+
+	public required string FIO { get; set; }
+
+	public required string PhoneNumber { get; set; }
+
+	public double DiscountSize { get; set; }
+
+	[ForeignKey("BuyerId")]
+	public List<Sale>? Sales { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Manufacturer.cs

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Manufacturer
+{
+	public required string Id { get; set; }
+
+	public required string ManufacturerName { get; set; }
+
+	public string? PrevManufacturerName { get; set; }
+
+	public string? PrevPrevManufacturerName { get; set; }
+
+	[ForeignKey("ManufacturerId")]
+	public List<Product>? Products { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Post.cs

@@ -0,0 +1,21 @@
+using CatHasPawsContratcs.Enums;
+using CatHasPawsContratcs.Infrastructure.PostConfigurations;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Post
+{
+	public required string Id { get; set; } = Guid.NewGuid().ToString();
+
+	public required string PostId { get; set; }
+
+	public required string PostName { get; set; }
+
+	public PostType PostType { get; set; }
+
+	public required PostConfiguration Configuration { get; set; }
+
+	public bool IsActual { get; set; }
+
+	public DateTime ChangeDate { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Product.cs

@@ -0,0 +1,27 @@
+using CatHasPawsContratcs.Enums;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Product
+{
+	public required string Id { get; set; }
+
+	public required string ProductName { get; set; }
+
+	public ProductType ProductType { get; set; }
+
+	public required string ManufacturerId { get; set; }
+
+	public double Price { get; set; }
+
+	public bool IsDeleted { get; set; }
+
+	public Manufacturer? Manufacturer { get; set; }
+
+	[ForeignKey("ProductId")]
+	public List<ProductHistory>? ProductHistories { get; set; }
+
+	[ForeignKey("ProductId")]
+	public List<SaleProduct>? SaleProducts { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/ProductHistory.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsDatabase.Models;
+
+internal class ProductHistory
+{
+	public string Id { get; set; } = Guid.NewGuid().ToString();
+
+	public required string ProductId { get; set; }
+
+	public double OldPrice { get; set; }
+
+	public DateTime ChangeDate { get; set; }
+
+	public Product? Product { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Salary.cs

@@ -0,0 +1,14 @@
+namespace CatHasPawsDatabase.Models;
+
+internal class Salary
+{
+	public string Id { get; set; } = Guid.NewGuid().ToString();
+
+	public required string WorkerId { get; set; }
+
+	public DateTime SalaryDate { get; set; }
+
+	public double WorkerSalary { get; set; }
+
+	public Worker? Worker { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Sale.cs

@@ -0,0 +1,30 @@
+using CatHasPawsContratcs.Enums;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Sale
+{
+	public string Id { get; set; } = Guid.NewGuid().ToString();
+
+	public required string WorkerId { get; set; }
+
+	public string? BuyerId { get; set; }
+
+	public DateTime SaleDate { get; set; }
+
+	public double Sum { get; set; }
+
+	public DiscountType DiscountType { get; set; }
+
+	public double Discount { get; set; }
+
+	public bool IsCancel { get; set; }
+
+	public Worker? Worker { get; set; }
+
+	public Buyer? Buyer { get; set; }
+
+	[ForeignKey("SaleId")]
+	public List<SaleProduct>? SaleProducts { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/SaleProduct.cs

@@ -0,0 +1,16 @@
+namespace CatHasPawsDatabase.Models;
+
+internal class SaleProduct
+{
+	public required string SaleId { get; set; }
+
+	public required string ProductId { get; set; }
+
+	public int Count { get; set; }
+
+	public double Price { get; set; }
+
+	public Sale? Sale { get; set; }
+
+	public Product? Product { get; set; }
+}

TheCatHasPawsProject/CatHasPawsDatabase/Models/Worker.cs

@@ -0,0 +1,35 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CatHasPawsDatabase.Models;
+
+internal class Worker
+{
+	public required string Id { get; set; }
+
+	public required string FIO { get; set; }
+
+	public required string PostId { get; set; }
+
+	public DateTime BirthDate { get; set; }
+
+	public DateTime EmploymentDate { get; set; }
+
+	public bool IsDeleted { get; set; }
+
+	public DateTime? DateOfDelete { get; set; }
+
+	[NotMapped]
+	public Post? Post { get; set; }
+
+	[ForeignKey("WorkerId")]
+	public List<Salary>? Salaries { get; set; }
+
+	[ForeignKey("WorkerId")]
+	public List<Sale>? Sales { get; set; }
+
+	public Worker AddPost(Post? post)
+	{
+		Post = post;
+		return this;
+	}
+}

TheCatHasPawsProject/CatHasPawsDatabase/SampleContextFactory.cs

@@ -0,0 +1,11 @@
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace CatHasPawsDatabase;
+
+internal class SampleContextFactory : IDesignTimeDbContextFactory<CatHasPawsDbContext>
+{
+	public CatHasPawsDbContext CreateDbContext(string[] args)
+	{
+		return new CatHasPawsDbContext(new DefaultConfigurationDatabase());
+	}
+}

TheCatHasPawsProject/CatHasPawsTests/BusinessLogicsContractsTests/BuyerBusinessLogicContractTests.cs

@@ -0,0 +1,350 @@
+using CatHasPawsBusinessLogic.Implementations;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace CatHasPawsTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class BuyerBusinessLogicContractTests
+{
+	private BuyerBusinessLogicContract _buyerBusinessLogicContract;
+	private Mock<IBuyerStorageContract> _buyerStorageContract;
+
+	[OneTimeSetUp]
+	public void OneTimeSetUp()
+	{
+		_buyerStorageContract = new Mock<IBuyerStorageContract>();
+		_buyerBusinessLogicContract = new BuyerBusinessLogicContract(_buyerStorageContract.Object, new Mock<ILogger>().Object);
+	}
+
+	[SetUp]
+	public void SetUp()
+	{
+		_buyerStorageContract.Reset();
+	}
+
+	[Test]
+	public void GetAllBuyers_ReturnListOfRecords_Test()
+	{
+		//Arrange
+		var listOriginal = new List<BuyerDataModel>()
+		{
+			new(Guid.NewGuid().ToString(), "fio 1", "+7-111-111-11-11", 0),
+			new(Guid.NewGuid().ToString(), "fio 2", "+7-555-444-33-23", 10),
+			new(Guid.NewGuid().ToString(), "fio 3", "+7-777-777-7777", 0),
+		};
+		_buyerStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+		//Act
+		var list = _buyerBusinessLogicContract.GetAllBuyers();
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Is.EquivalentTo(listOriginal));
+	}
+
+	[Test]
+	public void GetAllBuyers_ReturnEmptyList_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.GetList()).Returns([]);
+		//Act
+		var list = _buyerBusinessLogicContract.GetAllBuyers();
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Has.Count.EqualTo(0));
+		_buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllBuyers_ReturnNull_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetAllBuyers(), Throws.TypeOf<NullListException>());
+		_buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllBuyers_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetAllBuyers(), Throws.TypeOf<StorageException>());
+		_buyerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetById_ReturnRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var record = new BuyerDataModel(id, "fio", "+7-111-111-11-11", 0);
+		_buyerStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+		//Act
+		var element = _buyerBusinessLogicContract.GetBuyerByData(id);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.Id, Is.EqualTo(id));
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetByFio_ReturnRecord_Test()
+	{
+		//Arrange
+		var fio = "fio";
+		var record = new BuyerDataModel(Guid.NewGuid().ToString(), fio, "+7-111-111-11-11", 0);
+		_buyerStorageContract.Setup(x => x.GetElementByFIO(fio)).Returns(record);
+		//Act
+		var element = _buyerBusinessLogicContract.GetBuyerByData(fio);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.FIO, Is.EqualTo(fio));
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetByPhoneNumber_ReturnRecord_Test()
+	{
+		//Arrange
+		var phoneNumber = "+7-111-111-11-11";
+		var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", phoneNumber, 0);
+		_buyerStorageContract.Setup(x => x.GetElementByPhoneNumber(phoneNumber)).Returns(record);
+		//Act
+		var element = _buyerBusinessLogicContract.GetBuyerByData(phoneNumber);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.PhoneNumber, Is.EqualTo(phoneNumber));
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetBuyerByData_EmptyData_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetById_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetByFio_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("fio"), Throws.TypeOf<ElementNotFoundException>());
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetBuyerByData_GetByPhoneNumber_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("+7-111-111-11-12"), Throws.TypeOf<ElementNotFoundException>());
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Never);
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetBuyerByData_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		_buyerStorageContract.Setup(x => x.GetElementByFIO(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		_buyerStorageContract.Setup(x => x.GetElementByPhoneNumber(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("fio"), Throws.TypeOf<StorageException>());
+		Assert.That(() => _buyerBusinessLogicContract.GetBuyerByData("+7-111-111-11-12"), Throws.TypeOf<StorageException>());
+		_buyerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_buyerStorageContract.Verify(x => x.GetElementByFIO(It.IsAny<string>()), Times.Once);
+		_buyerStorageContract.Verify(x => x.GetElementByPhoneNumber(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertBuyer_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 10);
+		_buyerStorageContract.Setup(x => x.AddElement(It.IsAny<BuyerDataModel>()))
+			.Callback((BuyerDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.FIO == record.FIO &&
+					x.PhoneNumber == record.PhoneNumber && x.DiscountSize == record.DiscountSize;
+			});
+		//Act
+		_buyerBusinessLogicContract.InsertBuyer(record);
+		//Assert
+		_buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void InsertBuyer_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.AddElement(It.IsAny<BuyerDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0)), Throws.TypeOf<ElementExistsException>());
+		_buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertBuyer_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(null), Throws.TypeOf<ArgumentNullException>());
+		_buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertBuyer_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new BuyerDataModel("id", "fio", "+7-111-111-11-11", 10)), Throws.TypeOf<ValidationException>());
+		_buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertBuyer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.AddElement(It.IsAny<BuyerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.InsertBuyer(new(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0)), Throws.TypeOf<StorageException>());
+		_buyerStorageContract.Verify(x => x.AddElement(It.IsAny<BuyerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateBuyer_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new BuyerDataModel(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0);
+		_buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>()))
+			.Callback((BuyerDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.FIO == record.FIO &&
+					x.PhoneNumber == record.PhoneNumber && x.DiscountSize == record.DiscountSize;
+			});
+		//Act
+		_buyerBusinessLogicContract.UpdateBuyer(record);
+		//Assert
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void UpdateBuyer_RecordWithIncorrectData_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>())).Throws(new ElementNotFoundException(""));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0)), Throws.TypeOf<ElementNotFoundException>());
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateBuyer_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0)), Throws.TypeOf<ElementExistsException>());
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateBuyer_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(null), Throws.TypeOf<ArgumentNullException>());
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdateBuyer_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new BuyerDataModel("id", "fio", "+7-111-111-11-11", 10)), Throws.TypeOf<ValidationException>());
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdateBuyer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.UpdElement(It.IsAny<BuyerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.UpdateBuyer(new(Guid.NewGuid().ToString(), "fio", "+7-111-111-11-11", 0)), Throws.TypeOf<StorageException>());
+		_buyerStorageContract.Verify(x => x.UpdElement(It.IsAny<BuyerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void DeleteBuyer_CorrectRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var flag = false;
+		_buyerStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+		//Act
+		_buyerBusinessLogicContract.DeleteBuyer(id);
+		//Assert
+		_buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void DeleteBuyer_RecordWithIncorrectId_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(""));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void DeleteBuyer_IdIsNullOrEmpty_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeleteBuyer_IdIsNotGuid_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer("id"), Throws.TypeOf<ValidationException>());
+		_buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeleteBuyer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_buyerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _buyerBusinessLogicContract.DeleteBuyer(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		_buyerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+}

TheCatHasPawsProject/CatHasPawsTests/BusinessLogicsContractsTests/ManufacturerBusinessLogicContractTests.cs

@@ -0,0 +1,349 @@
+using CatHasPawsBusinessLogic.Implementations;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace CatHasPawsTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class ManufacturerBusinessLogicContractTests
+{
+	private ManufacturerBusinessLogicContract _manufacturerBusinessLogicContract;
+	private Mock<IManufacturerStorageContract> _manufacturerStorageContract;
+
+	[OneTimeSetUp]
+	public void OneTimeSetUp()
+	{
+		_manufacturerStorageContract = new Mock<IManufacturerStorageContract>();
+		_manufacturerBusinessLogicContract = new ManufacturerBusinessLogicContract(_manufacturerStorageContract.Object, new Mock<ILogger>().Object);
+	}
+
+	[SetUp]
+	public void SetUp()
+	{
+		_manufacturerStorageContract.Reset();
+	}
+
+	[Test]
+	public void GetAllManufacturers_ReturnListOfRecords_Test()
+	{
+		//Arrange
+		var listOriginal = new List<ManufacturerDataModel>()
+		{
+			new(Guid.NewGuid().ToString(), "name 1", null, null),
+			new(Guid.NewGuid().ToString(), "name 2", null, null),
+			new(Guid.NewGuid().ToString(), "name 3", null, null),
+		};
+		_manufacturerStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+		//Act
+		var list = _manufacturerBusinessLogicContract.GetAllManufacturers();
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Is.EquivalentTo(listOriginal));
+	}
+
+	[Test]
+	public void GetAllManufacturers_ReturnEmptyList_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.GetList()).Returns([]);
+		//Act
+		var list = _manufacturerBusinessLogicContract.GetAllManufacturers();
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Has.Count.EqualTo(0));
+		_manufacturerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllManufacturers_ReturnNull_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetAllManufacturers(), Throws.TypeOf<NullListException>());
+		_manufacturerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllManufacturers_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetAllManufacturers(), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetManufacturerByData_GetById_ReturnRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var record = new ManufacturerDataModel(id, "name", null, null);
+		_manufacturerStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+		//Act
+		var element = _manufacturerBusinessLogicContract.GetManufacturerByData(id);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.Id, Is.EqualTo(id));
+		_manufacturerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetManufacturerByData_GetByName_ReturnRecord_Test()
+	{
+		//Arrange
+		var manufacturerName = "name";
+		var record = new ManufacturerDataModel(Guid.NewGuid().ToString(), manufacturerName, null, null);
+		_manufacturerStorageContract.Setup(x => x.GetElementByName(manufacturerName)).Returns(record);
+		//Act
+		var element = _manufacturerBusinessLogicContract.GetManufacturerByData(manufacturerName);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.ManufacturerName, Is.EqualTo(manufacturerName));
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetManufacturerByData_GetByOldName_ReturnRecord_Test()
+	{
+		//Arrange
+		var manufacturerOldName = "name before";
+		var record = new ManufacturerDataModel(Guid.NewGuid().ToString(), "name", manufacturerOldName, null);
+		_manufacturerStorageContract.Setup(x => x.GetElementByOldName(manufacturerOldName)).Returns(record);
+		//Act
+		var element = _manufacturerBusinessLogicContract.GetManufacturerByData(manufacturerOldName);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.PrevManufacturerName, Is.EqualTo(manufacturerOldName));
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetManufacturerByData_EmptyData_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_manufacturerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetManufacturerByData__GetById_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_manufacturerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetManufacturerByData_GetByNameOrOldName_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData("name"), Throws.TypeOf<ElementNotFoundException>());
+		_manufacturerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetManufacturerByData_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		_manufacturerStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData("name"), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetManufacturerByData_GetByOldName_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.GetElementByOldName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.GetManufacturerByData("name"), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+		_manufacturerStorageContract.Verify(x => x.GetElementByOldName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertManufacturer_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new ManufacturerDataModel(Guid.NewGuid().ToString(), "name", null, null);
+		_manufacturerStorageContract.Setup(x => x.AddElement(It.IsAny<ManufacturerDataModel>()))
+			.Callback((ManufacturerDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.ManufacturerName == record.ManufacturerName;
+			});
+		//Act
+		_manufacturerBusinessLogicContract.InsertManufacturer(record);
+		//Assert
+		_manufacturerStorageContract.Verify(x => x.AddElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void InsertManufacturer_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.AddElement(It.IsAny<ManufacturerDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.InsertManufacturer(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementExistsException>());
+		_manufacturerStorageContract.Verify(x => x.AddElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertManufacturer_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.InsertManufacturer(null), Throws.TypeOf<ArgumentNullException>());
+		_manufacturerStorageContract.Verify(x => x.AddElement(It.IsAny<ManufacturerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertManufacturer_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.InsertManufacturer(new ManufacturerDataModel("id", "name", null, null)), Throws.TypeOf<ValidationException>());
+		_manufacturerStorageContract.Verify(x => x.AddElement(It.IsAny<ManufacturerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertManufacturer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.AddElement(It.IsAny<ManufacturerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.InsertManufacturer(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.AddElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateManufacturer_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new ManufacturerDataModel(Guid.NewGuid().ToString(), "name", null, null);
+		_manufacturerStorageContract.Setup(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()))
+			.Callback((ManufacturerDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.ManufacturerName == record.ManufacturerName;
+			});
+		//Act
+		_manufacturerBusinessLogicContract.UpdateManufacturer(record);
+		//Assert
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void UpdateManufacturer_RecordWithIncorrectData_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.UpdElement(It.IsAny<ManufacturerDataModel>())).Throws(new ElementNotFoundException(""));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.UpdateManufacturer(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementNotFoundException>());
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateManufacturer_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.UpdElement(It.IsAny<ManufacturerDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.UpdateManufacturer(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<ElementExistsException>());
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdateManufacturer_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.UpdateManufacturer(null), Throws.TypeOf<ArgumentNullException>());
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdateManufacturer_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.UpdateManufacturer(new ManufacturerDataModel("id", "name", null, null)), Throws.TypeOf<ValidationException>());
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdateManufacturer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.UpdElement(It.IsAny<ManufacturerDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.UpdateManufacturer(new(Guid.NewGuid().ToString(), "name", null, null)), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.UpdElement(It.IsAny<ManufacturerDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void DeleteManufacturer_CorrectRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var flag = false;
+		_manufacturerStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+		//Act
+		_manufacturerBusinessLogicContract.DeleteManufacturer(id);
+		//Assert
+		_manufacturerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void DeleteManufacturer_RecordWithIncorrectId_ThrowException_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		_manufacturerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.DeleteManufacturer(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_manufacturerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void DeleteManufacturer_IdIsNullOrEmpty_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.DeleteManufacturer(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _manufacturerBusinessLogicContract.DeleteManufacturer(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_manufacturerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeleteManufacturer_IdIsNotGuid_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.DeleteManufacturer("id"), Throws.TypeOf<ValidationException>());
+		_manufacturerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeleteManufacturer_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_manufacturerStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _manufacturerBusinessLogicContract.DeleteManufacturer(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		_manufacturerStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+}

TheCatHasPawsProject/CatHasPawsTests/BusinessLogicsContractsTests/PostBusinessLogicContractTests.cs

@@ -0,0 +1,445 @@
+using CatHasPawsBusinessLogic.Implementations;
+using CatHasPawsContratcs.DataModels;
+using CatHasPawsContratcs.Enums;
+using CatHasPawsContratcs.Exceptions;
+using CatHasPawsContratcs.Infrastructure.PostConfigurations;
+using CatHasPawsContratcs.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using Moq;
+
+namespace CatHasPawsTests.BusinessLogicsContractsTests;
+
+[TestFixture]
+internal class PostBusinessLogicContractTests
+{
+	private PostBusinessLogicContract _postBusinessLogicContract;
+	private Mock<IPostStorageContract> _postStorageContract;
+
+	[OneTimeSetUp]
+	public void OneTimeSetUp()
+	{
+		_postStorageContract = new Mock<IPostStorageContract>();
+		_postBusinessLogicContract = new PostBusinessLogicContract(_postStorageContract.Object, new Mock<ILogger>().Object);
+	}
+
+	[SetUp]
+	public void SetUp()
+	{
+		_postStorageContract.Reset();
+	}
+
+	[Test]
+	public void GetAllPosts_ReturnListOfRecords_Test()
+	{
+		//Arrange
+		var listOriginal = new List<PostDataModel>()
+		{
+			new(Guid.NewGuid().ToString(),"name 1", PostType.Assistant, new PostConfiguration() { Rate = 10 }),
+			new(Guid.NewGuid().ToString(), "name 2", PostType.Assistant, new PostConfiguration() { Rate = 10 }),
+			new(Guid.NewGuid().ToString(), "name 3", PostType.Assistant, new PostConfiguration() { Rate = 10 }),
+		};
+		_postStorageContract.Setup(x => x.GetList()).Returns(listOriginal);
+		//Act
+		var list = _postBusinessLogicContract.GetAllPosts();
+		//Assert
+		Assert.Multiple(() =>
+		{
+			Assert.That(list, Is.Not.Null);
+			Assert.That(list, Is.EquivalentTo(listOriginal));
+		});
+		_postStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllPosts_ReturnEmptyList_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.GetList()).Returns([]);
+		//Act
+		var list = _postBusinessLogicContract.GetAllPosts();
+		//Assert
+		Assert.Multiple(() =>
+		{
+			Assert.That(list, Is.Not.Null);
+			Assert.That(list, Has.Count.EqualTo(0));
+		});
+	}
+
+	[Test]
+	public void GetAllPosts_ReturnNull_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllPosts(), Throws.TypeOf<NullListException>());
+		_postStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllPosts_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.GetList()).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllPosts(), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.GetList(), Times.Once);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_ReturnListOfRecords_Test()
+	{
+		//Arrange
+		var postId = Guid.NewGuid().ToString();
+		var listOriginal = new List<PostDataModel>()
+		{
+			new(postId, "name 1", PostType.Assistant, new PostConfiguration() { Rate = 10 }),
+			new(postId, "name 2", PostType.Assistant, new PostConfiguration() { Rate = 10 })
+		};
+		_postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Returns(listOriginal);
+		//Act
+		var list = _postBusinessLogicContract.GetAllDataOfPost(postId);
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Has.Count.EqualTo(2));
+		_postStorageContract.Verify(x => x.GetPostWithHistory(postId), Times.Once);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_ReturnEmptyList_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Returns([]);
+		//Act
+		var list = _postBusinessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString());
+		//Assert
+		Assert.That(list, Is.Not.Null);
+		Assert.That(list, Has.Count.EqualTo(0));
+		_postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_PostIdIsNullOrEmpty_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllDataOfPost(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _postBusinessLogicContract.GetAllDataOfPost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_PostIdIsNotGuid_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllDataOfPost("id"), Throws.TypeOf<ValidationException>());
+		_postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_ReturnNull_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString()), Throws.TypeOf<NullListException>());
+		_postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetAllDataOfPost_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.GetPostWithHistory(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetAllDataOfPost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.GetPostWithHistory(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetPostByData_GetById_ReturnRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var record = new PostDataModel(id, "name", PostType.Assistant, new PostConfiguration() { Rate = 10 });
+		_postStorageContract.Setup(x => x.GetElementById(id)).Returns(record);
+		//Act
+		var element = _postBusinessLogicContract.GetPostByData(id);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.Id, Is.EqualTo(id));
+		_postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetPostByData_GetByName_ReturnRecord_Test()
+	{
+		//Arrange
+		var postName = "name";
+		var record = new PostDataModel(Guid.NewGuid().ToString(), postName, PostType.Assistant, new PostConfiguration() { Rate = 10 });
+		_postStorageContract.Setup(x => x.GetElementByName(postName)).Returns(record);
+		//Act
+		var element = _postBusinessLogicContract.GetPostByData(postName);
+		//Assert
+		Assert.That(element, Is.Not.Null);
+		Assert.That(element.PostName, Is.EqualTo(postName));
+		_postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetPostByData_EmptyData_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetPostByData(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _postBusinessLogicContract.GetPostByData(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetPostByData_GetById_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetPostByData(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void GetPostByData_GetByName_NotFoundRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetPostByData("name"), Throws.TypeOf<ElementNotFoundException>());
+		_postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Never);
+		_postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void GetPostByData_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.GetElementById(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		_postStorageContract.Setup(x => x.GetElementByName(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.GetPostByData(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		Assert.That(() => _postBusinessLogicContract.GetPostByData("name"), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.GetElementById(It.IsAny<string>()), Times.Once);
+		_postStorageContract.Verify(x => x.GetElementByName(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertPost_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 });
+		_postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>()))
+			.Callback((PostDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.ConfigurationModel.Rate == record.ConfigurationModel.Rate;
+			});
+		//Act
+		_postBusinessLogicContract.InsertPost(record);
+		//Assert
+		_postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void InsertPost_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<ElementExistsException>());
+		_postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void InsertPost_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.InsertPost(null), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertPost_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.InsertPost(new PostDataModel("id", "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<ValidationException>());
+		_postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void InsertPost_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.AddElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.InsertPost(new(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.AddElement(It.IsAny<PostDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdatePost_CorrectRecord_Test()
+	{
+		//Arrange
+		var flag = false;
+		var record = new PostDataModel(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 });
+		_postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>()))
+			.Callback((PostDataModel x) =>
+			{
+				flag = x.Id == record.Id && x.PostName == record.PostName && x.PostType == record.PostType && x.ConfigurationModel.Rate == record.ConfigurationModel.Rate;
+			});
+		//Act
+		_postBusinessLogicContract.UpdatePost(record);
+		//Assert
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void UpdatePost_RecordWithIncorrectData_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new ElementNotFoundException(""));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<ElementNotFoundException>());
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdatePost_RecordWithExistsData_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new ElementExistsException("Data", "Data"));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "anme", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<ElementExistsException>());
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void UpdatePost_NullRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.UpdatePost(null), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdatePost_InvalidRecord_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.UpdatePost(new PostDataModel("id", "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<ValidationException>());
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Never);
+	}
+
+	[Test]
+	public void UpdatePost_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.UpdElement(It.IsAny<PostDataModel>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.UpdatePost(new(Guid.NewGuid().ToString(), "name", PostType.Supervisor, new PostConfiguration() { Rate = 10 })), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.UpdElement(It.IsAny<PostDataModel>()), Times.Once);
+	}
+
+	[Test]
+	public void DeletePost_CorrectRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var flag = false;
+		_postStorageContract.Setup(x => x.DelElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+		//Act
+		_postBusinessLogicContract.DeletePost(id);
+		//Assert
+		_postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void DeletePost_RecordWithIncorrectId_ThrowException_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		_postStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.DeletePost(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void DeletePost_IdIsNullOrEmpty_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.DeletePost(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _postBusinessLogicContract.DeletePost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeletePost_IdIsNotGuid_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.DeletePost("id"), Throws.TypeOf<ValidationException>());
+		_postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void DeletePost_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.DelElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.DeletePost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.DelElement(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void RestorePost_CorrectRecord_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		var flag = false;
+		_postStorageContract.Setup(x => x.ResElement(It.Is((string x) => x == id))).Callback(() => { flag = true; });
+		//Act
+		_postBusinessLogicContract.RestorePost(id);
+		//Assert
+		_postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+		Assert.That(flag);
+	}
+
+	[Test]
+	public void RestorePost_RecordWithIncorrectId_ThrowException_Test()
+	{
+		//Arrange
+		var id = Guid.NewGuid().ToString();
+		_postStorageContract.Setup(x => x.ResElement(It.IsAny<string>())).Throws(new ElementNotFoundException(id));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.RestorePost(Guid.NewGuid().ToString()), Throws.TypeOf<ElementNotFoundException>());
+		_postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+	}
+
+	[Test]
+	public void RestorePost_IdIsNullOrEmpty_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.RestorePost(null), Throws.TypeOf<ArgumentNullException>());
+		Assert.That(() => _postBusinessLogicContract.RestorePost(string.Empty), Throws.TypeOf<ArgumentNullException>());
+		_postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void RestorePost_IdIsNotGuid_ThrowException_Test()
+	{
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.RestorePost("id"), Throws.TypeOf<ValidationException>());
+		_postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Never);
+	}
+
+	[Test]
+	public void RestorePost_StorageThrowError_ThrowException_Test()
+	{
+		//Arrange
+		_postStorageContract.Setup(x => x.ResElement(It.IsAny<string>())).Throws(new StorageException(new InvalidOperationException()));
+		//Act&Assert
+		Assert.That(() => _postBusinessLogicContract.RestorePost(Guid.NewGuid().ToString()), Throws.TypeOf<StorageException>());
+		_postStorageContract.Verify(x => x.ResElement(It.IsAny<string>()), Times.Once);
+	}
+}