Правки к реализации задания

TopazContracts/.dockerignore

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+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md
+!**/.gitignore
+!.git/HEAD
+!.git/config
+!.git/packed-refs
+!.git/refs/heads/**

TopazContracts/TopazBusinessLogic/Emplementations/BuyerBusinessLogicContracts.cs

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+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+
+namespace TopazBusinessLogic.Emplementations;
+internal class BuyerBusinessLogicContracts (IBuyerStorageContract buyerStorageContract, ILogger logger) : IBuyerBusinessLogicContracts
+
+{
+    private readonly ILogger _logger = logger;
+
+    private 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);
+    }
+}

TopazContracts/TopazBusinessLogic/Emplementations/ManufactureBusinessLogicContracts.cs

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+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class ManufactureBusinessLogicContracts (IManufactureStorageContract manufacturerStorageContract, ILogger logger) : IManufactureBusinessLogicContracts
+{
+    private readonly ILogger _logger = logger;
+    private readonly IManufactureStorageContract _manufacturerStorageContract = manufacturerStorageContract;
+    public List<ManufactureDataModels> GetAllManufacture()
+    {
+        _logger.LogInformation("GetAllManufacturers");
+        return _manufacturerStorageContract.GetList() ?? throw new NullListException();
+    }
+    public ManufactureDataModels GetManufactureDataModelsByData(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 InsertManufacture(ManufactureDataModels manufactureDataModel)
+    {
+       _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(manufactureDataModel));
+        ArgumentNullException.ThrowIfNull(manufactureDataModel);
+        manufactureDataModel.Validate();
+        _manufacturerStorageContract.AddElement(manufactureDataModel);
+    }
+    public void UpdateManufacture(ManufactureDataModels manufactureDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(manufactureDataModel));
+        ArgumentNullException.ThrowIfNull(manufactureDataModel);
+        manufactureDataModel.Validate();
+        _manufacturerStorageContract.UpdElement(manufactureDataModel);
+    } 
+    public void DeleteManufacture(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);
+    }
+}

TopazContracts/TopazBusinessLogic/Emplementations/PostBusinessLogicContracts.cs

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+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class PostBusinessLogicContracts(IPostStorageContract postStorageContract, ILogger logger) : IPostBusinessLogicContracts
+{
+    private readonly ILogger _logger = logger;
+    private readonly IPostStorageContract _postStorageContract = postStorageContract;
+    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 List<PostDataModel> GetAllPosts()
+    {
+        _logger.LogInformation("GetAllPosts");
+        return _postStorageContract.GetList() ?? 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);
+    }
+
+}

TopazContracts/TopazBusinessLogic/Emplementations/ProductBusinessLogicContracts.cs

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+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class ProductBusinessLogicContracts(IProductStorageContract productStorageContract, ILogger logger) : IProductBusinessLogicContracts
+{
+    private readonly ILogger _logger = logger;
+    private readonly IProductStorageContract _productStorageContract = productStorageContract;
+    public List<ProductDataModel> GetAllProducts(bool onlyActive = true)
+    {
+        _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);
+    }
+
+}

TopazContracts/TopazBusinessLogic/Emplementations/SalaryBusinessLogicContracts.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+using TopazContracts.Infrastructure.PostConfigurations;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class SalaryBusinessLogicContracts(ISalaryStorageContract salaryStorageContract,
+    ISaleStorageContract saleStorageContract, IPostStorageContract postStorageContract, IWorkerStorageContract workerStorageContract, ILogger logger, IConfigurationSalary сonfiguration) : ISalaryBusinessLogicContracts
+{
+    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 calcPercent = 0.0;
+        var days = (finishDate - startDate).Days;
+        var dates = Enumerable.Range(0, days)
+                             .Select(offset => startDate.AddDays(offset))
+                             .ToList();
+
+        var parallelOptions = new ParallelOptions
+        {
+            MaxDegreeOfParallelism = _salaryConfiguration.MaxConcurrentThreads
+        };
+
+        Parallel.ForEach(dates, parallelOptions, date =>
+        {
+            var salesInDay = sales.Where(x => x.SaleDate.Date == date.Date).ToArray();
+            if (salesInDay.Length == 0) return;
+
+            double dailySum = salesInDay.Sum(x => x.Sum);
+            double averageSale = dailySum / salesInDay.Length;
+
+            lock (_lockObject)
+            {
+                calcPercent += averageSale * config.SalePercent;
+            }
+        });
+
+        double bonus = 0;
+        try
+        {
+            bonus = sales.Where(x => x.Sum > _salaryConfiguration.ExtraSaleSum)
+                         .Sum(x => x.Sum) * config.BonusForExtraSales;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error in bonus calculation");
+        }
+
+        return config.Rate + calcPercent + bonus;
+    }
+
+    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;
+        }
+    }
+
+}

TopazContracts/TopazBusinessLogic/Emplementations/SaleBusinessLogicContracts.cs

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+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class SaleBusinessLogicContracts(ISaleStorageContract saleStorageContract, ILogger logger) : ISaleBusinessLogicContracts
+{
+    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);
+    }
+
+}

TopazContracts/TopazBusinessLogic/Emplementations/WorkerBusinessLogicContracts.cs

@@ -0,0 +1,101 @@
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using TopazContracts.BusinessLogicContracts;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.StoragesContracts;
+
+namespace TopazBusinessLogic.Emplementations;
+
+internal class WorkerBusinessLogicContracts(IWorkerStorageContract workerStorageContract, ILogger logger) : IWorkerBusinessLogicContracts
+{
+    private readonly ILogger _logger = logger;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+    public List<WorkerDataModel> GetAllWorker(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> GetAllWorkerByBirthDate(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> GetAllWorkerByEmploymentDate(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);
+    }
+}

TopazContracts/TopazBusinessLogic/TopazBusinessLogic.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+	<ItemGroup>
+		<InternalsVisibleTo Include="TopazTests" />
+		<InternalsVisibleTo Include="TopazWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+	<ItemGroup>
+	  <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.2" />
+	</ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\TopazContracts\TopazContracts.csproj" />
+  </ItemGroup>
+
+</Project>

TopazContracts/TopazContracts.sln

@@ -1,10 +1,18 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.12.35707.178 d17.12
+VisualStudioVersion = 17.12.35707.178
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TopazContracts", "TopazContracts\TopazContracts.csproj", "{A4ADA076-1942-41BA-A0D9-E528C6630837}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TopazTests", "TopazTests\TopazTests.csproj", "{38D93B99-FF6E-47E0-867A-D2175A5B7C36}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TopazBusinessLogic", "TopazBusinessLogic\TopazBusinessLogic.csproj", "{2DE200D8-708B-4D98-9722-06F5AD9AE6D2}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TopazDataBase", "TopazDataBase\TopazDataBase.csproj", "{3AF09FF2-74F4-4B6B-BB2A-7C71B00EB6B2}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TopazWebApi", "TopazWebApi\TopazWebApi.csproj", "{F33751FB-1BEB-4C2E-8AF2-A941AF26AD63}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,8 +23,27 @@ Global
 		{A4ADA076-1942-41BA-A0D9-E528C6630837}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A4ADA076-1942-41BA-A0D9-E528C6630837}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A4ADA076-1942-41BA-A0D9-E528C6630837}.Release|Any CPU.Build.0 = Release|Any CPU
+		{38D93B99-FF6E-47E0-867A-D2175A5B7C36}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{38D93B99-FF6E-47E0-867A-D2175A5B7C36}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{38D93B99-FF6E-47E0-867A-D2175A5B7C36}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{38D93B99-FF6E-47E0-867A-D2175A5B7C36}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2DE200D8-708B-4D98-9722-06F5AD9AE6D2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2DE200D8-708B-4D98-9722-06F5AD9AE6D2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2DE200D8-708B-4D98-9722-06F5AD9AE6D2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2DE200D8-708B-4D98-9722-06F5AD9AE6D2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3AF09FF2-74F4-4B6B-BB2A-7C71B00EB6B2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3AF09FF2-74F4-4B6B-BB2A-7C71B00EB6B2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3AF09FF2-74F4-4B6B-BB2A-7C71B00EB6B2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3AF09FF2-74F4-4B6B-BB2A-7C71B00EB6B2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F33751FB-1BEB-4C2E-8AF2-A941AF26AD63}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F33751FB-1BEB-4C2E-8AF2-A941AF26AD63}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F33751FB-1BEB-4C2E-8AF2-A941AF26AD63}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F33751FB-1BEB-4C2E-8AF2-A941AF26AD63}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A2F983A3-86FD-432E-A0CD-51C6356D1AEC}
+	EndGlobalSection
 EndGlobal

TopazContracts/TopazContracts/AdapterContracts/IBuyerAdapter.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.AdapterContracts.OperationResponses;
+using TopazContracts.BindingModels;
+
+namespace TopazContracts.AdapterContracts;
+
+public interface IBuyerAdapter
+{
+    BuyerOperationResponse GetList();
+
+    BuyerOperationResponse GetElement(string data);
+
+    BuyerOperationResponse RegisterBuyer(BuyerBindingModel buyerModel);
+
+    BuyerOperationResponse ChangeBuyerInfo(BuyerBindingModel buyerModel);
+
+    BuyerOperationResponse RemoveBuyer(string id);
+}

TopazContracts/TopazContracts/AdapterContracts/IManufacturerAdapter.cs

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

TopazContracts/TopazContracts/AdapterContracts/IPostAdapter.cs

@@ -0,0 +1,21 @@
+using TopazContracts.AdapterContracts.OperationResponses;
+using TopazContracts.BindingModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/IProductAdapter.cs

@@ -0,0 +1,21 @@
+using TopazContracts.AdapterContracts.OperationResponses;
+using TopazContracts.BindingModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/ISalaryAdapter.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.AdapterContracts.OperationResponses;
+
+namespace TopazContracts.AdapterContracts;
+
+public interface ISalaryAdapter
+{
+    SalaryOperationResponse GetListByPeriod(DateTime fromDate, DateTime toDate);
+
+    SalaryOperationResponse GetListByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId);
+
+    SalaryOperationResponse CalculateSalary(DateTime date);
+}

TopazContracts/TopazContracts/AdapterContracts/ISaleAdapter.cs

@@ -0,0 +1,21 @@
+using TopazContracts.AdapterContracts.OperationResponses;
+using TopazContracts.BindingModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/IWorkerAdapter.cs

@@ -0,0 +1,23 @@
+using TopazContratcs.AdapterContracts.OperationResponses;
+using TopazContratcs.BindingModels;
+
+namespace TopazContratcs.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/BuyerOperationResponse.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Infrastructure;
+using TopazContracts.ViewModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/ManufacturerOperationRespons.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Infrastructure;
+using TopazContracts.ViewModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/PostOperationResponse.cs

@@ -0,0 +1,19 @@
+using TopazContracts.ViewModels;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/ProductOperationResponse.cs

@@ -0,0 +1,21 @@
+using TopazContracts.Infrastructure;
+using TopazContracts.ViewModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/SalaryOperationResponse.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Infrastructure;
+using TopazContracts.ViewModels;
+
+namespace TopazContracts.AdapterContracts.OperationResponses;
+
+public class SalaryOperationResponse : OperationResponse
+{
+    public static SalaryOperationResponse OK(List<SalaryViewModel> data) => OK<SalaryOperationResponse, List<SalaryViewModel>>(data);
+
+    public static SalaryOperationResponse NoContent() => NoContent<SalaryOperationResponse>();
+
+    public static SalaryOperationResponse NotFound(string message) => NotFound<SalaryOperationResponse>(message);
+
+    public static SalaryOperationResponse BadRequest(string message) => BadRequest<SalaryOperationResponse>(message);
+
+    public static SalaryOperationResponse InternalServerError(string message) => InternalServerError<SalaryOperationResponse>(message);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/SaleOperationResponse.cs

@@ -0,0 +1,19 @@
+using TopazContracts.Infrastructure;
+using TopazContratcs.ViewModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/AdapterContracts/OperationResponses/WorkerOperationResponse.cs

@@ -0,0 +1,19 @@
+using TopazContracts.Infrastructure;
+using TopazContratcs.ViewModels;
+
+namespace TopazContratcs.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);
+}

TopazContracts/TopazContracts/BindingModels/BuyerBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.BindingModels;
+
+public class BuyerBindingModel
+{
+    public string? Id { get; set; }
+    public string? FIO { get; set; }
+    public string? PhoneNumber { get; set; }
+    public double DiscountSize { get; set; }
+}

TopazContracts/TopazContracts/BindingModels/ManufacturerBindingModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.BindingModels;
+
+public class ManufacturerBindingModel
+{
+    public string? Id { get; set; }
+
+    public string? ManufacturerName { get; set; }
+}

TopazContracts/TopazContracts/BindingModels/PostBindingModel.cs

@@ -0,0 +1,14 @@
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/BindingModels/ProductBindingModel.cs

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

TopazContracts/TopazContracts/BindingModels/SaleBindingModel.cs

@@ -0,0 +1,14 @@
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/BindingModels/SaleProductBindingModel.cs

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

TopazContracts/TopazContracts/BindingModels/WorkerBindingModel.cs

@@ -0,0 +1,14 @@
+namespace TopazContratcs.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; }
+}

TopazContracts/TopazContracts/BusinessLogicContracts/IBuyerBusinessLogicContracts.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface IBuyerBusinessLogicContracts
+{
+    List<BuyerDataModel> GetAllBuyers();
+    BuyerDataModel GetBuyerByData(string data);
+    void InsertBuyer(BuyerDataModel buyerDataModel);
+    void UpdateBuyer(BuyerDataModel buyerDataModel);
+    void DeleteBuyer(string id);
+}

TopazContracts/TopazContracts/BusinessLogicContracts/IManufactureBusinessLogicContracts.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface IManufactureBusinessLogicContracts
+{
+    List<ManufactureDataModels> GetAllManufacture();
+    ManufactureDataModels GetManufactureDataModelsByData(string data);
+    void InsertManufacture(ManufactureDataModels manufactureDataModels);
+    void UpdateManufacture(ManufactureDataModels manufactureDataModels);
+    void DeleteManufacture(string id);
+}

TopazContracts/TopazContracts/BusinessLogicContracts/IPostBusinessLogicContracts.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface IPostBusinessLogicContracts
+{
+    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);
+}

TopazContracts/TopazContracts/BusinessLogicContracts/IProductBusinessLogicContracts.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface IProductBusinessLogicContracts
+{
+    List<ProductDataModel> GetAllProducts(bool onlyActive = true);
+    List<ProductDataModel> GetAllProductsByManufacturer(string manufacterId, bool onlyActive = true);
+    List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId);
+    ProductDataModel GetProductByData(string data);
+    void InsertProduct(ProductDataModel productDataModel);
+    void UpdateProduct(ProductDataModel productDataModel);
+    void DeleteProduct(string id);
+}

TopazContracts/TopazContracts/BusinessLogicContracts/ISalaryBusinessLogicContracts.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface ISalaryBusinessLogicContracts
+{
+    List<SalaryDataModel> GetAllSalariesByPeriod(DateTime fromDate, DateTime toDate);
+    List<SalaryDataModel> GetAllSalariesByPeriodByWorker(DateTime fromDate, DateTime toDate, string workerId);
+    void CalculateSalaryByMounth(DateTime date);
+}

TopazContracts/TopazContracts/BusinessLogicContracts/ISaleBusinessLogicContracts.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface ISaleBusinessLogicContracts
+{
+    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);
+ 
+}

TopazContracts/TopazContracts/BusinessLogicContracts/IWorkerBusinessLogicContracts.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.BusinessLogicContracts;
+
+public interface IWorkerBusinessLogicContracts
+{
+    List<WorkerDataModel> GetAllWorker(bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkerByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkerByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+    WorkerDataModel GetWorkerByData(string data);
+    void InsertWorker(WorkerDataModel workerDataModel);
+    void UpdateWorker(WorkerDataModel workerDataModel);
+    void DeleteWorker(string id);
+}

TopazContracts/TopazContracts/DataModels/BuyerDataModel.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.DataModels;
+
+public class BuyerDataModel(string id, string fio, string phonenumber, double discountSize) : IValidation
+{
+    public string Id { get; set; } = id;
+    public string FIO { get; set; } = fio;
+    public string PhoneNumber { get; set; } = phonenumber;
+    public double DiscountSize { get; set; } = discountSize;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+        {
+            throw new ValidationException("Field Id is empty");
+        }
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (FIO.IsEmpty())
+            throw new ValidationException("Field FIO is empty");
+
+        if (PhoneNumber.IsEmpty())
+            throw new ValidationException("Field PhoneNumber is empty");
+
+        if (!Regex.IsMatch(PhoneNumber, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$"))
+            throw new ValidationException("Field PhoneNumber is not a phone number");
+
+        if (!Regex.IsMatch(FIO, @"^[А-ЯЁ][а-яё]+(?:-[А-ЯЁ][а-яё]+)?\s[А-ЯЁ][а-яё]+(?:\s[А-ЯЁ][а-яё]+)?$"))
+            throw new ValidationException("Field FIO is not a fio");
+    }
+}

TopazContracts/TopazContracts/DataModels/ManufactureDataModels.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+
+namespace TopazContracts.DataModels;
+
+public class ManufactureDataModels(string id, string manufacturerName, string? prevManufacturerName, string? prevPrevManufacturerName) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string ManufacturerName { get; private set; } = manufacturerName;
+
+    public string? PrevManufacturerName { get; private set; } = prevManufacturerName;
+
+    public string? PrevPrevManufacturerName { get; private set; } = prevPrevManufacturerName;
+    public ManufactureDataModels(string id, string manufacturerName) : this(id, manufacturerName, null, null) { }
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (ManufacturerName.IsEmpty())
+            throw new ValidationException("Field ManufacturerName is empty");
+    }
+}

TopazContracts/TopazContracts/DataModels/PostDataModel.cs

@@ -0,0 +1,58 @@
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+using TopazContracts.Infrastructure.PostConfigurations;
+
+namespace TopazContracts.DataModels;
+
+public class PostDataModel(string postId, string postName, PostType postType, PostConfiguration configuration) : IValidation
+{
+    public string Id { get; private set; } = postId;
+
+    public string PostName { get; private set; } = postName;
+
+    public PostType PostType { get; private set; } = postType;
+
+    public PostConfiguration ConfigurationModel { get; private set; } = configuration;
+    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()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id  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 (ConfigurationModel is null)
+            throw new ValidationException("Field SaConfigurationModellary is not initialized");
+        if (ConfigurationModel!.Rate <=0)
+            throw new ValidationException("Field Rate is less or equal zero");
+    }
+}

TopazContracts/TopazContracts/DataModels/ProductDataModel.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.DataModels;
+
+public class ProductDataModel(string id, string productName, ComponentType componentType, string manufacturerId, double price, bool isDeleted) : IValidation
+{
+    private readonly ManufactureDataModels? _manufacturer;
+    public string Id { get; private set; } = id;
+
+    public string ProductName { get; private set; } = productName;
+
+    public ComponentType ComponentType { get; private set; } = componentType;
+
+    public string ManufacturerId { get; private set; } = manufacturerId;
+
+    public double Price { get; private set; } = price;
+
+    public bool IsDeleted { get; private set; } = isDeleted;
+    public string ManufacturerName => _manufacturer?.ManufacturerName ?? string.Empty;
+    public ProductDataModel(string id, string productName, ComponentType componentType, string manufacturerId, double price, bool isDeleted, ManufactureDataModels manufacturer) : this(id, productName, componentType, manufacturerId, price, isDeleted)
+    {
+        _manufacturer = manufacturer;
+    }
+
+    public ProductDataModel(string id, string productName, ComponentType componentType, string manufacturerId, double price) : this(id, productName, componentType, manufacturerId, price, false) { }
+
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (ProductName.IsEmpty())
+            throw new ValidationException("Field ProductName is empty");
+        if (ComponentType == ComponentType.None)
+            throw new ValidationException("Field ComponentType is empty");
+        if (ManufacturerId.IsEmpty())
+            throw new ValidationException("Field ManufacturerId is empty");
+        if (!ManufacturerId.IsGuid())
+            throw new ValidationException("The value in the field ManufacturerId is not a unique identifier");
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

TopazContracts/TopazContracts/DataModels/ProductHistoryDataModel.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.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())
+            throw new ValidationException("Field ProductId is empty");
+        if (!ProductId.IsGuid())
+            throw new ValidationException("The value in the field ProductId is not a unique identifier");
+        if (OldPrice <= 0)
+            throw new ValidationException("Field OldPrice is less than or equal to 0");
+    }
+}

TopazContracts/TopazContracts/DataModels/SalaryDataModel.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.DataModels;
+
+public class SalaryDataModel(string workerId, DateTime salaryDate, double workerSalary) : IValidation
+{
+    private readonly WorkerDataModel? _worker;
+    public string WorkerId { get; private set; } = workerId;
+
+    public DateTime SalaryDate { get; private set; } = salaryDate;
+
+    public double Salary { get; private set; } = workerSalary;
+    public string WorkerFIO => _worker?.FIO ?? string.Empty;
+
+    public SalaryDataModel(string workerId, DateTime salaryDate, double workerSalary, WorkerDataModel worker) : this(workerId, salaryDate, workerSalary)
+    {
+        _worker = worker;
+    }
+    public void Validate()
+    {
+        if (WorkerId.IsEmpty())
+            throw new ValidationException("Field WorkerId is empty");
+
+        if (!WorkerId.IsGuid())
+            throw new ValidationException("The value in the field WorkerId is not a unique identifier");
+
+        if (Salary <= 0)
+            throw new ValidationException("Field Salary is less than or equal to 0");
+    }
+}

TopazContracts/TopazContracts/DataModels/SaleDataModel.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Enums;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.DataModels;
+
+public class SaleDataModel : IValidation
+{
+    private readonly BuyerDataModel? _buyer;
+
+    private readonly WorkerDataModel? _worker;
+    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; }
+
+    public DiscountType DiscountType { get; private set; }
+
+    public double Discount { get; private set; }
+
+    public bool IsCancel { get; private set; }
+
+    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()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (WorkerId.IsEmpty())
+            throw new ValidationException("Field WorkerId is empty");
+
+        if (!WorkerId.IsGuid())
+            throw new ValidationException("The value in the field WorkerId is not a unique identifier");
+
+        if (!BuyerId?.IsGuid() ?? !BuyerId?.IsEmpty() ?? false)
+            throw new ValidationException("The value in the field BuyerId is not a unique identifier");
+
+        if (Sum <= 0)
+            throw new ValidationException("Field Sum is less than or equal to 0");
+
+        if ((Products?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

TopazContracts/TopazContracts/DataModels/SaleProductDataModel.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+
+namespace TopazContracts.DataModels;
+
+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())
+            throw new ValidationException("Field SaleId is empty");
+
+        if (!SaleId.IsGuid())
+            throw new ValidationException("The value in the field SaleId is not a unique identifier");
+
+        if (ProductId.IsEmpty())
+            throw new ValidationException("Field ProductId is empty");
+
+        if (!ProductId.IsGuid())
+            throw new ValidationException("The value in the field ProductId is not a unique identifier");
+
+        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");
+    }
+}

TopazContracts/TopazContracts/DataModels/WorkerDataModel.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using TopazContracts.Exceptions;
+using TopazContracts.Extensions;
+using TopazContracts.Infrastructure;
+using TopazContracts.Infrastructure.PostConfigurations;
+
+namespace TopazContracts.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;
+    public string PostId { get; private set; } = postId;
+    public DateTime BirthDate { get; private set; } = birthDate;
+    public DateTime EmploymentDate { get; private set; } = employmentDate;
+    public bool IsDeleted { get; private set; } = isDeleted;
+    public string PostName => _post?.PostName ?? string.Empty;
+    public PostConfiguration Configuration => _post?.ConfigurationModel ?? new() { Rate = 0 };
+
+    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())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (FIO.IsEmpty())
+            throw new ValidationException("Field FIO is empty");
+        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 (BirthDate.Date > DateTime.Now.AddYears(-14).Date)
+            throw new ValidationException($"Minors cannot be hired (BirthDate = {BirthDate.ToShortDateString()})");
+        if (EmploymentDate.Date < BirthDate.Date)
+            throw new ValidationException("The date of employment cannot be less than the date of birth");
+        if ((EmploymentDate - BirthDate).TotalDays / 365 < 14)
+            throw new ValidationException($"Minors cannot be hired (EmploymentDate - {EmploymentDate.ToShortDateString()}, BirthDate -{BirthDate.ToShortDateString()})");
+    }
+}

TopazContracts/TopazContracts/Enums/ComponentType.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Enums;
+
+public enum ComponentType
+{
+    None = 0,
+    Gold = 1,
+    Silver = 2,
+    platinum = 3,
+    Melchior = 4,
+    Brass = 5
+}

TopazContracts/TopazContracts/Enums/DiscountType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Enums;
+[Flags]
+public enum DiscountType
+{ 
+    None = 0,
+	OnSale = 1,
+	RegularCustomer = 2,
+	Certificate = 4
+}

TopazContracts/TopazContracts/Enums/PostType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Enums;
+
+public enum PostType
+{
+    None = 0,
+    Supervisor = 1,
+    CashierConsultant = 2,
+    Assistant = 3
+}

TopazContracts/TopazContracts/Exceptions/ElementDeletedException.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Exceptions;
+
+public class ElementDeletedException : Exception
+{
+    public ElementDeletedException(string id) : base($"Cannot modify a deleted item(id: { id})") { }
+}

TopazContracts/TopazContracts/Exceptions/ElementExistsException.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.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; 
+    }
+}

TopazContracts/TopazContracts/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+    public string Value { get; private set; }
+    public ElementNotFoundException(string value) : base($"Element not found at value = { value}") 
+    { 
+        Value = value; 
+    } 
+}

TopazContracts/TopazContracts/Exceptions/IncorrectDatesException.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace TopazContracts.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}") { } 
+}

TopazContracts/TopazContracts/Exceptions/NullListException.cs

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

TopazContracts/TopazContracts/Exceptions/StorageException.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Exceptions;
+
+public class StorageException : Exception
+{ public StorageException(Exception ex) : base($"Error while working in storage: { ex.Message}", ex) { } }

TopazContracts/TopazContracts/Exceptions/ValidationException.cs

@@ -0,0 +1,4 @@
+namespace TopazContracts.Exceptions;
+public class ValidationException  (string message) : Exception(message)
+{
+}

TopazContracts/TopazContracts/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Extensions;
+
+public static class DateTimeExtensions
+{
+    public static bool IsDateNotOlder(this DateTime date, DateTime olderDate)
+    {
+        return date >= olderDate;
+    }
+}

TopazContracts/TopazContracts/Extensions/StringExtensions.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Extensions;
+
+public static class StringExtensions
+{
+    public static bool IsEmpty(this string str)
+    {
+        return string.IsNullOrWhiteSpace(str);
+    }
+    public static bool IsGuid(this string str)
+    {
+        return Guid.TryParse(str, out _);
+    }
+}

TopazContracts/TopazContracts/Infrastructure/IConfigurationDataBase.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure;
+
+public interface IConfigurationDataBase
+{
+    string ConnectionString { get; }
+}

TopazContracts/TopazContracts/Infrastructure/IConfigurationSalary.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure;
+
+public interface IConfigurationSalary
+{
+    double ExtraSaleSum { get; }
+    int MaxConcurrentThreads { get; }
+}

TopazContracts/TopazContracts/Infrastructure/IValidation.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure;
+
+public interface IValidation
+{
+    void Validate();
+}

TopazContracts/TopazContracts/Infrastructure/OperationResponse.cs

@@ -0,0 +1,38 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System.Net;
+
+
+namespace TopazContracts.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 };
+}

TopazContracts/TopazContracts/Infrastructure/PostConfigurations/CashierPostConfiguration.cs

@@ -0,0 +1,25 @@
+using Microsoft.Extensions.Configuration;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure.PostConfigurations;
+
+public class CashierPostConfiguration : PostConfiguration
+{
+    public override string Type => nameof(CashierPostConfiguration);
+
+    public double SalePercent { get; set; }
+
+    public double BonusForExtraSales { get; set; }
+
+    public CashierPostConfiguration(IConfiguration config = null)
+    {
+        if (config != null)
+        {
+            config.GetSection("CashierSettings").Bind(this);
+        }
+    }
+}

TopazContracts/TopazContracts/Infrastructure/PostConfigurations/PostConfiguration.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure.PostConfigurations;
+
+public class PostConfiguration
+{
+    public virtual string Type => nameof(PostConfiguration);
+    public double Rate { get; set; }
+}

TopazContracts/TopazContracts/Infrastructure/PostConfigurations/SupervisorPostConfiguration.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.Infrastructure.PostConfigurations;
+
+public class SupervisorPostConfiguration : PostConfiguration
+{
+    public override string Type => nameof(SupervisorPostConfiguration);
+    public double PersonalCountTrendPremium { get; set; }
+}

TopazContracts/TopazContracts/StoragesContracts/IBuyerStorageContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.StoragesContracts;
+
+public interface IBuyerStorageContract
+{
+    List<BuyerDataModel> GetList();
+    BuyerDataModel? GetElementById(string id);
+    BuyerDataModel? GetElementByFIO(string fio);
+    BuyerDataModel? GetElementByPhoneNumber(string phoneNumber);
+    void AddElement(BuyerDataModel buyerDataModel);
+    void UpdElement(BuyerDataModel buyerDataModel);
+    void DelElement(string id);
+}

TopazContracts/TopazContracts/StoragesContracts/IManufactureStorageContract.cs

@@ -0,0 +1,19 @@
+ using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.StoragesContracts;
+
+public interface IManufactureStorageContract
+{
+    List<ManufactureDataModels> GetList();
+    ManufactureDataModels? GetElementById(string id);
+    ManufactureDataModels? GetElementByName(string name);
+    ManufactureDataModels? GetElementByOldName(string name);
+    void AddElement(ManufactureDataModels manufactureDataModel);
+    void UpdElement(ManufactureDataModels manufactureDataModel);
+    void DelElement(string id);
+}

TopazContracts/TopazContracts/StoragesContracts/IPostStorageContract.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.StoragesContracts;
+
+public interface IPostStorageContract
+{
+    List<PostDataModel> GetList();
+    List<PostDataModel> GetPostWithHistory(string postid);
+    PostDataModel? GetElementById(string id);
+    PostDataModel? GetElementByName(string id);
+    void AddElement(PostDataModel postDataModel);
+    void UpdElement(PostDataModel postDataModel);
+    void DelElement(string id);
+    void ResElement(string id);
+}

TopazContracts/TopazContracts/StoragesContracts/IProductStorageContract.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.StoragesContracts;
+
+public interface IProductStorageContract
+{
+    List<ProductDataModel> GetList(bool onlyActive = true, string? manufactureId = 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);
+}

TopazContracts/TopazContracts/StoragesContracts/ISalaryStorageContract.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.StoragesContracts;
+
+public interface ISalaryStorageContract
+{
+    List<SalaryDataModel> GetList(DateTime startDate, DateTime endDate, string? workedId=null);
+    void AddElement(SalaryDataModel salaryDataModel);
+}

TopazContracts/TopazContracts/StoragesContracts/ISaleStorageContract.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.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);
+
+}

TopazContracts/TopazContracts/StoragesContracts/IWorkerStorageContract.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+
+namespace TopazContracts.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);
+}

TopazContracts/TopazContracts/TopazContracts.csproj

@@ -6,4 +6,11 @@
     <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" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="9.0.2" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
 </Project>

TopazContracts/TopazContracts/ViewModels/BuyerViewModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/ViewModels/ManufacturerViewModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/ViewModels/PostViewModel.cs

@@ -0,0 +1,12 @@
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/ViewModels/ProductHistoryViewModel.cs

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

TopazContracts/TopazContracts/ViewModels/ProductViewModel.cs

@@ -0,0 +1,18 @@
+namespace TopazContracts.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 ComponentType { get; set; }
+
+	public double Price { get; set; }
+
+	public bool IsDeleted { get; set; }
+}

TopazContracts/TopazContracts/ViewModels/SalaryViewModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TopazContracts.ViewModels;
+
+public class SalaryViewModel
+{
+    public required string WorkerId { get; set; }
+    public required string WorkerFIO { get; set; }
+    public DateTime SalaryDate { get; set; }
+    public double Salary { get; set; }
+    
+}

TopazContracts/TopazContracts/ViewModels/SaleProductViewModel.cs

@@ -0,0 +1,12 @@
+namespace TopazContracts.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; }
+}

TopazContracts/TopazContracts/ViewModels/SaleViewModel.cs

@@ -0,0 +1,28 @@
+using TopazContracts.ViewModels;
+
+namespace TopazContratcs.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; }
+}

TopazContracts/TopazContracts/ViewModels/WorkerViewModel.cs

@@ -0,0 +1,18 @@
+namespace TopazContratcs.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; }
+}

TopazContracts/TopazContractsBusinessLogic/Class1.cs

@@ -0,0 +1,7 @@
+namespace TopazContractsBusinessLogic
+{
+    public class Class1
+    {
+
+    }
+}

TopazContracts/TopazContractsBusinessLogic/TopazContractsBusinessLogic.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

TopazContracts/TopazDataBase/DefaultConfigurationDatabase.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.Infrastructure;
+namespace TopazDataBase;
+
+class DefaultConfigurationDatabase : IConfigurationDataBase
+{
+    public string ConnectionString => "";
+}

TopazContracts/TopazDataBase/Emplementations/BuyerStorageContract.cs

@@ -0,0 +1,155 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+class BuyerStorageContract : IBuyerStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+    public BuyerStorageContract(TopazDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg => cfg.AddMaps(Assembly.GetExecutingAssembly()));
+        _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);
+}

TopazContracts/TopazDataBase/Emplementations/ManufactureStorageContract.cs

@@ -0,0 +1,163 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+internal class ManufactureStorageContract : IManufactureStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public ManufactureStorageContract(TopazDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Manufacture, ManufactureDataModels>();
+            cfg.CreateMap<ManufactureDataModels, Manufacture>();
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<ManufactureDataModels> GetList()
+    {
+        try
+        {
+            return [.. _dbContext.Manufactures.Select(x => _mapper.Map<ManufactureDataModels>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ManufactureDataModels? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<ManufactureDataModels>(GetManufacturerById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ManufactureDataModels? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<ManufactureDataModels>(_dbContext.Manufactures.FirstOrDefault(x => x.ManufacturerName == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public ManufactureDataModels? GetElementByOldName(string name)
+    {
+        try
+        {
+            return _mapper.Map<ManufactureDataModels>(_dbContext.Manufactures.FirstOrDefault(x => x.PrevManufacturerName == name ||
+                x.PrevPrevManufacturerName == name));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(ManufactureDataModels manufacturerDataModel)
+    {
+        try
+        {
+            _dbContext.Manufactures.Add(_mapper.Map<Manufacture>(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_Manufactures_ManufacturerName" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("ManufacturerName", manufacturerDataModel.ManufacturerName);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(ManufactureDataModels 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.Manufactures.Update(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Manufactures_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.Manufactures.Remove(element);
+            _dbContext.SaveChanges();
+        }
+        catch (ElementNotFoundException)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    private Manufacture? GetManufacturerById(string id) => _dbContext.Manufactures.FirstOrDefault(x => x.Id == id);
+}
+
+

TopazContracts/TopazDataBase/Emplementations/PostStorageContract.cs

@@ -0,0 +1,203 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+class PostStorageContract: IPostStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public PostStorageContract(TopazDbContext 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();
+}

TopazContracts/TopazDataBase/Emplementations/ProductStorageContract.cs

@@ -0,0 +1,181 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+internal class ProductStorageContract : IProductStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public ProductStorageContract(TopazDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Manufacture, ManufactureDataModels>();
+            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);
+}

TopazContracts/TopazDataBase/Emplementations/SalaryStorageContract.cs

@@ -0,0 +1,66 @@
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+class SalaryStorageContract : ISalaryStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+    public SalaryStorageContract(TopazDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Worker, WorkerDataModel>();
+            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);
+        }
+    }
+
+}

TopazContracts/TopazDataBase/Emplementations/SaleStorageContract.cs

@@ -0,0 +1,116 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+internal class SaleStorageContract : ISaleStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SaleStorageContract(TopazDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Manufacture, ManufactureDataModels>();
+            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);
+}

TopazContracts/TopazDataBase/Emplementations/WorkerStorageContract.cs

@@ -0,0 +1,172 @@
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using TopazContracts.DataModels;
+using TopazContracts.Exceptions;
+using TopazContracts.StoragesContracts;
+using TopazDataBase.Models;
+
+namespace TopazDataBase.Emplementations;
+
+class WorkerStorageContract : IWorkerStorageContract
+{
+    private readonly TopazDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public WorkerStorageContract(TopazDbContext 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));
+
+    
+}

TopazContracts/TopazDataBase/Migrations/20250409062120_FirstMigration.Designer.cs

@@ -0,0 +1,381 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using TopazDataBase;
+
+#nullable disable
+
+namespace TopazDataBase.Migrations
+{
+    [DbContext(typeof(TopazDbContext))]
+    [Migration("20250409062120_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("TopazDataBase.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("TopazDataBase.Models.Manufacture", 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("Manufactures");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<int>("ComponentType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Manufacture", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Salary", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("TopazDataBase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Manufacture", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/20250409062120_FirstMigration.cs

@@ -0,0 +1,290 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace TopazDataBase.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: "Manufactures",
+                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_Manufactures", 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),
+                    ComponentType = 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),
+                    PrevProductName = table.Column<string>(type: "text", nullable: true),
+                    PrevPrevProductName = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Products", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Products_Manufactures_ManufacturerId",
+                        column: x => x.ManufacturerId,
+                        principalTable: "Manufactures",
+                        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_Manufactures_ManufacturerName",
+                table: "Manufactures",
+                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: "Manufactures");
+
+            migrationBuilder.DropTable(
+                name: "Buyers");
+
+            migrationBuilder.DropTable(
+                name: "Workers");
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/20250422132948_ChangeFieldsInPost.Designer.cs

@@ -0,0 +1,382 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using TopazDataBase;
+
+#nullable disable
+
+namespace TopazDataBase.Migrations
+{
+    [DbContext(typeof(TopazDbContext))]
+    [Migration("20250422132948_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("TopazDataBase.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("TopazDataBase.Models.Manufacture", 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("Manufactures");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<int>("ComponentType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Manufacture", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Salary", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("TopazDataBase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Manufacture", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/20250422132948_ChangeFieldsInPost.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace TopazDataBase.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);
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/20250422193151_CreateFieldSalaryConfig.Designer.cs

@@ -0,0 +1,388 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using TopazDataBase;
+
+#nullable disable
+
+namespace TopazDataBase.Migrations
+{
+    [DbContext(typeof(TopazDbContext))]
+    [Migration("20250422193151_CreateFieldSalaryConfig")]
+    partial class CreateFieldSalaryConfig
+    {
+        /// <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("TopazDataBase.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("TopazDataBase.Models.Manufacture", 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("Manufactures");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<int>("ComponentType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Configuration")
+                        .HasColumnType("jsonb");
+
+                    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("TopazDataBase.Models.Product", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Manufacture", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Salary", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("TopazDataBase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Manufacture", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/20250422193151_CreateFieldSalaryConfig.cs

@@ -0,0 +1,39 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace TopazDataBase.Migrations
+{
+    /// <inheritdoc />
+    public partial class CreateFieldSalaryConfig : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Configuration",
+                table: "Workers",
+                type: "jsonb",
+                nullable: true);
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "DateOfDelete",
+                table: "Workers",
+                type: "timestamp without time zone",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Configuration",
+                table: "Workers");
+
+            migrationBuilder.DropColumn(
+                name: "DateOfDelete",
+                table: "Workers");
+        }
+    }
+}

TopazContracts/TopazDataBase/Migrations/TopazDbContextModelSnapshot.cs

@@ -0,0 +1,385 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using TopazDataBase;
+
+#nullable disable
+
+namespace TopazDataBase.Migrations
+{
+    [DbContext(typeof(TopazDbContext))]
+    partial class TopazDbContextModelSnapshot : 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("TopazDataBase.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("TopazDataBase.Models.Manufacture", 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("Manufactures");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.Models.Product", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<int>("ComponentType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("ManufacturerId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevPrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PrevProductName")
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("ProductName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ManufacturerId");
+
+                    b.HasIndex("ProductName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.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("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("BirthDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Configuration")
+                        .HasColumnType("jsonb");
+
+                    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("TopazDataBase.Models.Product", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Manufacture", "Manufacturer")
+                        .WithMany("Products")
+                        .HasForeignKey("ManufacturerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Manufacturer");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.ProductHistory", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("ProductHistories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Salary", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("TopazDataBase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.SaleProduct", b =>
+                {
+                    b.HasOne("TopazDataBase.Models.Product", "Product")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("TopazDataBase.Models.Sale", "Sale")
+                        .WithMany("SaleProducts")
+                        .HasForeignKey("SaleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Product");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Manufacture", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Product", b =>
+                {
+                    b.Navigation("ProductHistories");
+
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Sale", b =>
+                {
+                    b.Navigation("SaleProducts");
+                });
+
+            modelBuilder.Entity("TopazDataBase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}