5 Лабораторная работа

AndDietCokeProject/AndDietCokeBuisnessLogic/AndDietCokeBuisnessLogic.csproj

@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>preview</LangVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="EntityFramework" Version="6.5.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.4" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.4" />
+    <PackageReference Include="Npgsql" Version="9.0.3" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AndDietCokeProject\AndDietCokeContracts.csproj" />
+  </ItemGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="AndDietCokeTests" />
+		<InternalsVisibleTo Include="AndDietCokeWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+</Project>

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/BuyerBusinessLogicContract.cs

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

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/DishBusinessLogicContract.cs

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+using AndDietCokeContracts.BisnessLogicsContracts;
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Enums;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace AndDietCokeBuisnessLogic.Implementations;
+
+internal class DishBusinessLogicContract(IDishStorageContract dishStorageContract, ILogger logger) : IDishBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IDishStorageContract _dishStorageContract = dishStorageContract;
+    public List<DishDataModel> GetAllDishes(bool onlyActive)
+    {
+        _logger.LogInformation("GetAllDishes params: {onlyActive}", onlyActive);
+        return _dishStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+    public List<DishHistoryDataModel> GetDishHistoryByDish(string dishId)
+    {
+        _logger.LogInformation("GetDishHistoryByDish for {dishId}", dishId);
+        if (dishId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(dishId));
+        }
+        if (!dishId.IsGuid())
+        {
+            throw new ValidationException("The value in the field dishId is not a unique identifier.");
+        }
+        return _dishStorageContract.GetHistoryByDishId(dishId) ?? throw new NullListException();
+    }
+    public DishDataModel GetDishByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _dishStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _dishStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+    }
+    public void InsertDish(DishDataModel dishDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(dishDataModel));
+        ArgumentNullException.ThrowIfNull(dishDataModel);
+        dishDataModel.Validate();
+        _dishStorageContract.AddElement(dishDataModel);
+    }
+    public void UpdateDish(DishDataModel dishDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(dishDataModel));
+        ArgumentNullException.ThrowIfNull(dishDataModel);
+        dishDataModel.Validate();
+        _dishStorageContract.UpdElement(dishDataModel);
+    }
+    public void DeleteDish(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");
+        }
+        _dishStorageContract.DelElement(id);
+    }
+}
+

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/PostBusinessLogicContract.cs

@@ -0,0 +1,99 @@
+using AndDietCokeContracts.BisnessLogicsContracts;
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Enums;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace AndDietCokeBuisnessLogic.Implementations;
+
+public class PostBusinessLogicContract(IPostStorageContract postStorageContract, ILogger logger) : IPostBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IPostStorageContract _postStorageContract = postStorageContract;
+
+    public List<PostDataModel> GetAllPosts(bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllPosts params: {onlyActive}", onlyActive);
+        return _postStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+
+    public List<PostDataModel> GetAllDataOfPost(string postId)
+    {
+        _logger.LogInformation("GetAllDataOfPost for {postId}", postId);
+        if (postId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(postId));
+        }
+        if (!postId.IsGuid())
+        {
+            throw new ValidationException("The value in the field postId is not a unique identifier.");
+        }
+        return _postStorageContract.GetPostWithHistory(postId) ?? throw new NullListException();
+    }
+
+    public PostDataModel GetPostByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _postStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _postStorageContract.GetElementByName(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertPost(PostDataModel postDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(postDataModel));
+        ArgumentNullException.ThrowIfNull(postDataModel);
+        postDataModel.Validate();
+        _postStorageContract.AddElement(postDataModel);
+    }
+
+    public void UpdatePost(PostDataModel postDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(postDataModel));
+        ArgumentNullException.ThrowIfNull(postDataModel);
+        postDataModel.Validate();
+        _postStorageContract.UpdElement(postDataModel);
+    }
+
+    public void DeletePost(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _postStorageContract.DelElement(id);
+    }
+
+    public void RestorePost(string id)
+    {
+        _logger.LogInformation("Restore by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _postStorageContract.ResElement(id);
+    }
+}

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/SalaryBusinessLogicContract.cs

@@ -0,0 +1,123 @@
+using AndDietCokeContracts.BisnessLogicsContracts;
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.Infrastrusture.PostConfiguration;
+using AndDietCokeContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+
+namespace AndDietCokeBuisnessLogic.Implementations;
+
+internal class SalaryBusinessLogicContract(ISalaryStorageContract salaryStorageContract,
+    ISaleStorageContract saleStorageContract, IPostStorageContract postStorageContract, IWorkerStorageContract workerStorageContract, ILogger logger, IConfigurationSalary сonfiguration) : ISalaryBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly ISalaryStorageContract _salaryStorageContract = salaryStorageContract;
+    private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+    private readonly IPostStorageContract _roleStorageContract = postStorageContract;
+    private readonly IConfigurationSalary _salaryConfiguration = сonfiguration;
+
+    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 = _roleStorageContract.GetElementById(worker.PostId) ?? throw new NullListException();
+            var salary = post.ConfigurationModel switch
+            {
+                null => 0,
+                WaiterPostConfiguration cpc => CalculateSalaryForCourier(sales, startDate, finishDate, cpc),
+                ChefPostConfiguration spc => CalculateSalaryForOperator(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(Guid.NewGuid().ToString(), worker.Id, finishDate, salary));
+        }
+    }
+
+    private double CalculateSalaryForCourier(List<SaleDataModel> sales, DateTime startDate, DateTime finishDate, WaiterPostConfiguration config)
+    {
+        double calcPercent = 0.0;
+        object lockObj = new();
+
+        var parallelOptions = new ParallelOptions
+        {
+            MaxDegreeOfParallelism = _salaryConfiguration.MaxConcurrentThreads
+        };
+
+        var days = Enumerable.Range(0, (finishDate - startDate).Days)
+                             .Select(offset => startDate.AddDays(offset))
+                             .ToList();
+
+        Parallel.ForEach(days, parallelOptions, date =>
+        {
+            var salesInDay = sales
+                .Where(x => x.SaleDate >= date && x.SaleDate < date.AddDays(1))
+                .ToArray();
+
+            if (salesInDay.Length > 0)
+            {
+                double dayPercent = (salesInDay.Sum(x => x.Sum) / salesInDay.Length) * config.SalePercent;
+                lock (lockObj)
+                {
+                    calcPercent += dayPercent;
+                }
+            }
+        });
+
+        double bonus = sales
+            .Where(x => x.Sum > _salaryConfiguration.ExtraSaleSum)
+            .Sum(x => x.Sum) * config.BonusForExtraSales;
+
+        return config.Rate + calcPercent + bonus;
+    }
+
+    private double CalculateSalaryForOperator(DateTime startDate, DateTime finishDate, ChefPostConfiguration 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;
+        }
+    }
+
+}

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/SaleBusinessLogicContract.cs

@@ -0,0 +1,120 @@
+using AndDietCokeContracts.BisnessLogicsContracts;
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace AndDietCokeBuisnessLogic.Implementations;
+
+internal class SaleBusinessLogicContract(ISaleStorageContract saleStorageContract, ILogger logger) : ISaleBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly ISaleStorageContract _saleStorageContract = saleStorageContract;
+
+    public List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {fromDate}, {toDate}", fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _saleStorageContract.GetList(fromDate, toDate) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {workerId}, {fromDate}, {toDate}", workerId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (workerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(workerId));
+        }
+        if (!workerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field workerId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, workerId: workerId) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByBuyerByPeriod(string buyerId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {buyerId}, {fromDate}, {toDate}", buyerId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (buyerId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(buyerId));
+        }
+        if (!buyerId.IsGuid())
+        {
+            throw new ValidationException("The value in the field buyerId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, buyerId: buyerId) ?? throw new NullListException();
+    }
+
+    public List<SaleDataModel> GetAllSalesByDishByPeriod(string dishId, DateTime fromDate, DateTime toDate)
+    {
+        _logger.LogInformation("GetAllSales params: {dishId}, {fromDate}, {toDate}", dishId, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        if (dishId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(dishId));
+        }
+        if (!dishId.IsGuid())
+        {
+            throw new ValidationException("The value in the field dishId is not a unique identifier.");
+        }
+        return _saleStorageContract.GetList(fromDate, toDate, dishId: dishId) ?? 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);
+    }
+}

AndDietCokeProject/AndDietCokeBuisnessLogic/Implementations/WorkerBusinessLogicContract.cs

@@ -0,0 +1,104 @@
+using AndDietCokeContracts.BisnessLogicsContracts;
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.StoragesContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace AndDietCokeBuisnessLogic.Implementations;
+
+internal class WorkerBusinessLogicContract(IWorkerStorageContract workerStorageContract, ILogger logger) : IWorkerBusinessLogicContract
+{
+    private readonly ILogger _logger = logger;
+    private readonly IWorkerStorageContract _workerStorageContract = workerStorageContract;
+
+    public List<WorkerDataModel> GetAllWorkers(bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}", onlyActive);
+        return _workerStorageContract.GetList(onlyActive) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {postId}, {onlyActive},", postId, onlyActive);
+        if (postId.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(postId));
+        }
+        if (!postId.IsGuid())
+        {
+            throw new ValidationException("The value in the field postId is not a unique identifier.");
+        }
+        return _workerStorageContract.GetList(onlyActive, postId) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _workerStorageContract.GetList(onlyActive, fromBirthDate: fromDate, toBirthDate: toDate) ?? throw new NullListException();
+    }
+
+    public List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true)
+    {
+        _logger.LogInformation("GetAllWorkers params: {onlyActive}, {fromDate}, {toDate}", onlyActive, fromDate, toDate);
+        if (fromDate.IsDateNotOlder(toDate))
+        {
+            throw new IncorrectDatesException(fromDate, toDate);
+        }
+        return _workerStorageContract.GetList(onlyActive, fromEmploymentDate: fromDate, toEmploymentDate: toDate) ?? throw new NullListException();
+    }
+
+    public WorkerDataModel GetWorkerByData(string data)
+    {
+        _logger.LogInformation("Get element by data: {data}", data);
+        if (data.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(data));
+        }
+        if (data.IsGuid())
+        {
+            return _workerStorageContract.GetElementById(data) ?? throw new ElementNotFoundException(data);
+        }
+        return _workerStorageContract.GetElementByFIO(data) ?? throw new ElementNotFoundException(data);
+    }
+
+    public void InsertWorker(WorkerDataModel workerDataModel)
+    {
+        _logger.LogInformation("New data: {json}", JsonSerializer.Serialize(workerDataModel));
+        ArgumentNullException.ThrowIfNull(workerDataModel);
+        workerDataModel.Validate();
+        _workerStorageContract.AddElement(workerDataModel);
+    }
+
+    public void UpdateWorker(WorkerDataModel workerDataModel)
+    {
+        _logger.LogInformation("Update data: {json}", JsonSerializer.Serialize(workerDataModel));
+        ArgumentNullException.ThrowIfNull(workerDataModel);
+        workerDataModel.Validate();
+        _workerStorageContract.UpdElement(workerDataModel);
+    }
+
+    public void DeleteWorker(string id)
+    {
+        _logger.LogInformation("Delete by id: {id}", id);
+        if (id.IsEmpty())
+        {
+            throw new ArgumentNullException(nameof(id));
+        }
+        if (!id.IsGuid())
+        {
+            throw new ValidationException("Id is not a unique identifier");
+        }
+        _workerStorageContract.DelElement(id);
+    }
+}

AndDietCokeProject/AndDietCokeContracts/AndDietCokeContracts.csproj

@@ -1,9 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-</Project>

AndDietCokeProject/AndDietCokeContracts/DataModels/DishDataModel.cs

@@ -1,45 +0,0 @@
-using AndDietCokeContracts.Enums;
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-namespace AndDietCokeContracts.DataModels;
-
-public class DishDataModel(string id, string name, DishType dishType, double price, string orderid) : IValidation
-{
-    public string Id { get; private set; } = id;
-
-    public string Name { get; private set; } = name;
-
-    public DishType DishType { get; private set; } = dishType;
-
-    public double Price { get; private set; } = price;
-
-    public string OrderId { get; private set; } = orderid;
-
-
-
-    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 (Name.IsEmpty())
-            throw new ValidationException("Field Name is empty");
-
-        if (Price <= 0)
-            throw new ValidationException("Field Price is less than or equal to 0");
-
-        if (DishType == DishType.None)
-            throw new ValidationException("Field DishType is empty");
-
-        if (OrderId.IsEmpty())
-            throw new ValidationException("Field OrderId is empty");
-        if (!OrderId.IsGuid())
-            throw new ValidationException("The value in the field OrderId is not a unique identifier");
-
-
-    }
-}

AndDietCokeProject/AndDietCokeContracts/DataModels/Dish_OrderDataModel.cs

@@ -1,39 +0,0 @@
-using AndDietCokeContracts.Enums;
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Xml.Linq;
-
-namespace AndDietCokeContracts.DataModels;
-public class Dish_OrderDataModel(string orderid, string dishid, int count)
-{
-public string OrderId { get; private set; } = orderid;
-public string DishId { get; private set; } = dishid;
-public int Count { get; private set; } = count;
-
-
-
-
-
-public void Validate()
-{
-    
-
-    if (OrderId.IsEmpty())
-        throw new ValidationException("Field OrderId is empty");
-    if (!OrderId.IsGuid())
-        throw new ValidationException("The value in the field OrderId is not a unique identifier");
-    if (DishId.IsEmpty())
-        throw new ValidationException("Field DishId is empty");
-    if (!DishId.IsGuid())
-        throw new ValidationException("The value in the field DishId is not a unique identifier");
-    if (Count <= 0)
-        throw new ValidationException("Field Count is less than or equal to 0"); 
-
-    }
-}

AndDietCokeProject/AndDietCokeContracts/DataModels/OrderDataModels.cs

@@ -1,31 +0,0 @@
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-namespace AndDietCokeContracts.DataModels;
-
-public class OrderDataModels(string id, string clientid, string employeedid, List<Dish_OrderDataModel> dishes) : IValidation
-{
-public string Id { get; private set; } = id;
-public string ClientId { get; private set; } = clientid;
-public string EmloyeedId { get; private set; } = employeedid;
-public List<Dish_OrderDataModel> Dishes { get; private set; } = dishes;
-    public void Validate()
-{
-    if (Id.IsEmpty())
-        throw new ValidationException("Field SaleId is empty");
-    if (!Id.IsGuid())
-        throw new ValidationException("The value in the field SaleId is not a unique identifier");
-    if (ClientId.IsEmpty())
-        throw new ValidationException("Field ClientId is empty");
-    if (!ClientId.IsGuid())
-        throw new ValidationException("The value in the field ClientId is not a unique identifier");
-    if (EmloyeedId.IsEmpty())
-        throw new ValidationException("Field ClientId is empty");
-    if (!EmloyeedId.IsGuid())
-        throw new ValidationException("The value in the field ClientId is not a unique identifier");
-    if ((Dishes?.Count ?? 0) == 0)
-        throw new ValidationException("The sale must include dishes"); 
-
-    }
-
-}

AndDietCokeProject/AndDietCokeContracts/DataModels/PositionDataModel.cs

@@ -1,36 +0,0 @@
-using AndDietCokeContracts.Enums;
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-using System.Text.RegularExpressions;
-using System.Xml;
-namespace AndDietCokeContracts.DataModels;
-
-public class PositionDataModell(string id, string positionId, string positionName, PositionType positionType, double salary, bool isActual, DateTime changeDate) : IValidation
-{
-    public string Id { get; private set; } = id;
-    public string PositionId { get; private set; } = positionId;
-    public string PositionName { get; private set; } = positionName;
-    public PositionType PositionType { get; private set; } = positionType;
-    public double Salary { get; private set; } = salary;
-    public bool IsActual { get; private set; } = isActual;
-    public DateTime ChangeDate { get; private set; } = changeDate;
-    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 (PositionId.IsEmpty())
-            throw new ValidationException("Field PostId is empty");
-        if (!PositionId.IsGuid())
-            throw new ValidationException("The value in the field PostId is not a unique identifier");
-        if (PositionName.IsEmpty())
-            throw new ValidationException("Field PostName is empty");
-        if (PositionType == PositionType.None)
-            throw new ValidationException("Field PostType is empty");
-        if (Salary <= 0)
-            throw new ValidationException("Field Salary is empty");
-    }
-}
-

AndDietCokeProject/AndDietCokeContracts/DataModels/SalaryDataModel.cs

@@ -1,28 +0,0 @@
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-
-namespace AndDietCokeContracts.DataModels;
-
-public class SalaryDataModel(string id, DateTime salaryDate, double salary, string employeedid) : IValidation
-{
-    public string Id { get; private set; } = id;
-    public DateTime SalaryDate { get; private set; } = salaryDate;
-    public double Salary { get; private set; } = salary;
-    public string EmloyeedId { get; private set; } = employeedid;
-
-    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 (Salary <= 0)
-            throw new ValidationException("Field Salary is less than or equal to 0");
-        if (EmloyeedId.IsEmpty())
-            throw new ValidationException("Field ClientId is empty");
-        if (!EmloyeedId.IsGuid())
-            throw new ValidationException("The value in the field ClientId is not a unique identifier");
-
-    }
-}

AndDietCokeProject/AndDietCokeContracts/DataModels/СlientDataModel.cs

@@ -1,33 +0,0 @@
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-using System.Text.RegularExpressions;
-
-
-namespace AndDietCokeContracts.DataModels;
-
-public class СlientDataModel(string id, string fio, string contact, double discountsize) : IValidation
-{
-    public string Id { get; private set; } = id;
-    public string FIO { get; private set; } = fio;
-    public string Contact { get; private set; } = contact;
-    public double DiscountSize { get; private 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 (Contact.IsEmpty())
-            throw new ValidationException("Field PhoneNumber is empty");
-
-        if (!Regex.IsMatch(Contact , @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\-]?)?[\d\- ]{7,10}$"))
-            throw new ValidationException("Field PhoneNumber is not a phone number");
-    }
-}

AndDietCokeProject/AndDietCokeContracts/Enums/DiscountType.cs

@@ -1,11 +0,0 @@
-namespace AndDietCokeContracts.Enums;
-
-[Flags]
-
-public enum DiscountType
-    {
-    None = 0,
-    OnSale = 1,
-    RegularCustumer = 2, 
-    Certificate = 4
-    }

AndDietCokeProject/AndDietCokeDatabase/AndDietCokeDatabase.csproj

@@ -0,0 +1,33 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>preview</LangVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="EntityFramework" Version="6.5.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Npgsql" Version="9.0.3" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AndDietCokeProject\AndDietCokeContracts.csproj" />
+  </ItemGroup>
+
+	<ItemGroup>
+		<InternalsVisibleTo Include="AndDietCokeTests" />
+		<InternalsVisibleTo Include="AndDietCokeWebApi" />
+		<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+	</ItemGroup>
+
+</Project>

AndDietCokeProject/AndDietCokeDatabase/AndDietCokeDbContext.cs

@@ -0,0 +1,84 @@
+using AndDietCokeDatabase.Models;
+using AndDietCokeContracts.Infrastrusture;
+using Microsoft.EntityFrameworkCore;
+using System.Data;
+using AndDietCokeContracts.Infrastrusture.PostConfiguration;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace AndDietCokeDatabase;
+
+public class AndDietCokeDbContext : DbContext
+{
+    private readonly IConfigurationDatabase? _configurationDatabase;
+    public AndDietCokeDbContext(IConfigurationDatabase configurationDatabase)
+    {
+        _configurationDatabase = configurationDatabase;
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+        AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+    }
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        optionsBuilder.UseNpgsql(_configurationDatabase?.ConnectionString, o => o.SetPostgresVersion(12, 2));
+        base.OnConfiguring(optionsBuilder);
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        base.OnModelCreating(modelBuilder);
+
+        modelBuilder.Entity<Buyer>()
+            .HasIndex(x => x.PhoneNumber).IsUnique();
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostName, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<Post>()
+            .HasIndex(e => new { e.PostId, e.IsActual })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Post.IsActual)}\" = TRUE");
+
+        modelBuilder.Entity<Dish>()
+            .HasIndex(x => new { x.DishName, x.IsDeleted })
+            .IsUnique()
+            .HasFilter($"\"{nameof(Dish.IsDeleted)}\" = FALSE");
+
+        modelBuilder.Entity<OrderDish>()
+            .HasKey(x => new { x.OrderId, x.DishId });
+
+        modelBuilder.Entity<Post>()
+            .Property(x => x.Configuration)
+            .HasColumnType("jsonb")
+            .HasConversion(
+                x => SerializeRoleConfiguration(x),
+                x => DeserialzeRoleConfiguration(x)
+    );
+    }
+
+    public DbSet<Buyer> Buyers { get; set; }
+
+    public DbSet<Post> Posts { get; set; }
+
+    public DbSet<Dish> Dishes { get; set; }
+
+    public DbSet<DishHistory> DishHistories { get; set; }
+
+    public DbSet<Salary> Salaries { get; set; }
+
+    public DbSet<Sale> Sales { get; set; }
+
+    public DbSet<OrderDish> OrderDishes { get; set; }
+
+    public DbSet<Worker> Workers { get; set; }
+
+    private static string SerializeRoleConfiguration(PostConfiguration roleConfiguration) => JsonConvert.SerializeObject(roleConfiguration);
+
+    private static PostConfiguration DeserialzeRoleConfiguration(string jsonString) => JToken.Parse(jsonString).Value<string>("Type") switch
+    {
+        nameof(WaiterPostConfiguration) => JsonConvert.DeserializeObject<WaiterPostConfiguration>(jsonString)!,
+        nameof(ChefPostConfiguration) => JsonConvert.DeserializeObject<ChefPostConfiguration>(jsonString)!,
+        _ => JsonConvert.DeserializeObject<PostConfiguration>(jsonString)!,
+    };
+}

AndDietCokeProject/AndDietCokeDatabase/DefaultConfigurationDatabase.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using AndDietCokeContracts.Infrastrusture;
+
+namespace AndDietCokeDatabase;
+
+class DefaultConfigurationDatabase : IConfigurationDatabase
+{
+    public string ConnectionString => "";
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/BuyerStorageContract.cs

@@ -0,0 +1,153 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class BuyerStorageContract : IBuyerStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public BuyerStorageContract(AndDietCokeDbContext andDietCokeDbContext)
+    {
+        _dbContext = andDietCokeDbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.AddMaps(typeof(AndDietCokeDbContext).Assembly);
+        });
+        _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);
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/DishStorageContract.cs

@@ -0,0 +1,176 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class DishStorageContract : IDishStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public DishStorageContract(AndDietCokeDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Dish, DishDataModel>();
+            cfg.CreateMap<DishDataModel, Dish>()
+                .ForMember(x => x.IsDeleted, x => x.MapFrom(src => false));
+            cfg.CreateMap<DishHistory, DishHistoryDataModel>();
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<DishDataModel> GetList(bool onlyActive = true)
+    {
+        try
+        {
+            var query = _dbContext.Dishes.AsQueryable();
+            if (onlyActive)
+            {
+                query = query.Where(x => !x.IsDeleted);
+            }
+            return [.. query.Select(x => _mapper.Map<DishDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public List<DishHistoryDataModel> GetHistoryByDishId(string dishId)
+    {
+        try
+        {
+            return [.. _dbContext.DishHistories.Include(x => x.Dish).Where(x => x.DishId == dishId).OrderByDescending(x => x.ChangeDate).Select(x => _mapper.Map<DishHistoryDataModel>(x))];
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public DishDataModel? GetElementById(string id)
+    {
+        try
+        {
+            return _mapper.Map<DishDataModel>(GetDishById(id));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public DishDataModel? GetElementByName(string name)
+    {
+        try
+        {
+            return _mapper.Map<DishDataModel>(_dbContext.Dishes.FirstOrDefault(x => x.DishName == name && !x.IsDeleted));
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void AddElement(DishDataModel dishDataModel)
+    {
+        try
+        {
+            _dbContext.Dishes.Add(_mapper.Map<Dish>(dishDataModel));
+            _dbContext.SaveChanges();
+        }
+        catch (InvalidOperationException ex) when (ex.TargetSite?.Name == "ThrowIdentityConflict")
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("Id", dishDataModel.Id);
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Dishes_DishName_IsDeleted" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("DishName", dishDataModel.DishName);
+        }
+        catch (Exception ex)
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new StorageException(ex);
+        }
+    }
+
+    public void UpdElement(DishDataModel dishDataModel)
+    {
+        try
+        {
+            var transaction = _dbContext.Database.BeginTransaction();
+            try
+            {
+                var element = GetDishById(dishDataModel.Id) ?? throw new ElementNotFoundException(dishDataModel.Id);
+                if (element.Price != dishDataModel.Price)
+                {
+                    _dbContext.DishHistories.Add(new DishHistory() { DishId = element.Id, OldPrice = element.Price });
+                    _dbContext.SaveChanges();
+                }
+                _dbContext.Dishes.Update(_mapper.Map(dishDataModel, element));
+                _dbContext.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        catch (DbUpdateException ex) when (ex.InnerException is PostgresException { ConstraintName: "IX_Dishes_DishName_IsDeleted" })
+        {
+            _dbContext.ChangeTracker.Clear();
+            throw new ElementExistsException("DishName", dishDataModel.DishName);
+        }
+        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 = GetDishById(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 Dish? GetDishById(string id) => _dbContext.Dishes.FirstOrDefault(x => x.Id == id && !x.IsDeleted);
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/PostStorageContract.cs

@@ -0,0 +1,192 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using Npgsql;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class PostStorageContract : IPostStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public PostStorageContract(AndDietCokeDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Post, PostDataModel>()
+                .ForMember(x => x.Id, opt => opt.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(bool onlyActual = true)
+    {
+        try
+        {
+            var query = _dbContext.Posts.AsQueryable();
+            return [.. query.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();
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/SalaryStorageContract.cs

@@ -0,0 +1,64 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class SalaryStorageContract : ISalaryStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SalaryStorageContract(AndDietCokeDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Worker, WorkerDataModel>();
+            cfg.CreateMap<WorkerDataModel, Worker>();
+            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);
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/SaleStorageContract.cs

@@ -0,0 +1,121 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class SaleStorageContract : ISaleStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public SaleStorageContract(AndDietCokeDbContext dbContext)
+    {
+        _dbContext = dbContext;
+        var config = new MapperConfiguration(cfg =>
+        {
+            cfg.CreateMap<Buyer, BuyerDataModel>();
+            cfg.CreateMap<Dish, DishDataModel>();
+            cfg.CreateMap<Worker, WorkerDataModel>();
+            cfg.CreateMap<OrderDish, OrderDishDataModel>();
+            cfg.CreateMap<Sale, SaleDataModel>();
+            cfg.CreateMap<OrderDishDataModel, OrderDish>();
+            cfg.CreateMap<SaleDataModel, Sale>()
+               .ForMember(x => x.IsCancel, x => x.MapFrom(src => false))
+               .ForMember(x => x.OrderDishes, x => x.MapFrom(src => src.Dishes));
+        });
+        _mapper = new Mapper(config);
+    }
+
+    public List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? buyerId = null, string? dishId = null)
+    {
+        try
+        {
+            var query = _dbContext.Sales.Include(x => x.Buyer).Include(x => x.Worker).Include(x => x.OrderDishes)!.ThenInclude(x => x.Dish).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 (dishId is not null)
+            {
+                query = query.Where(x => x.OrderDishes!.Any(y => y.DishId == dishId));
+            }
+            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.OrderDishes)!.ThenInclude(x => x.Dish).FirstOrDefault(x => x.Id == id);
+}

AndDietCokeProject/AndDietCokeDatabase/Implementations/WorkerStorageContract.cs

@@ -0,0 +1,171 @@
+using AndDietCokeContracts.DataModels;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.StoragesContracts;
+using AndDietCokeDatabase.Models;
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Implementations;
+
+internal class WorkerStorageContract : IWorkerStorageContract
+{
+    private readonly AndDietCokeDbContext _dbContext;
+    private readonly Mapper _mapper;
+
+    public WorkerStorageContract(AndDietCokeDbContext 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 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);
+        }
+    }
+
+    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);
+        }
+    }
+    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));
+}

AndDietCokeProject/AndDietCokeDatabase/Migrations/20250525153604_FirstMigration.Designer.cs

@@ -0,0 +1,327 @@
+// <auto-generated />
+using System;
+using AndDietCokeDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace AndDietCokeDatabase.Migrations
+{
+    [DbContext(typeof(AndDietCokeDbContext))]
+    [Migration("20250525153604_FirstMigration")]
+    partial class FirstMigration
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("DishType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("DishId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.ToTable("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.Property<string>("OrderId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.HasKey("OrderId", "DishId");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("SaleId");
+
+                    b.ToTable("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsConstantClient")
+                        .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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany("DishHistories")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany()
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AndDietCokeDatabase.Models.Sale", "Sale")
+                        .WithMany("OrderDishes")
+                        .HasForeignKey("SaleId");
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId");
+
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Navigation("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Migrations/20250525153604_FirstMigration.cs

@@ -0,0 +1,256 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace AndDietCokeDatabase.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: "Dishes",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    DishName = table.Column<string>(type: "text", nullable: false),
+                    DishType = table.Column<int>(type: "integer", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false),
+                    IsDeleted = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Dishes", 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: "DishHistories",
+                columns: table => new
+                {
+                    Id = table.Column<string>(type: "text", nullable: false),
+                    DishId = 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_DishHistories", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_DishHistories_Dishes_DishId",
+                        column: x => x.DishId,
+                        principalTable: "Dishes",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            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),
+                    IsConstantClient = table.Column<bool>(type: "boolean", 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");
+                    table.ForeignKey(
+                        name: "FK_Sales_Workers_WorkerId",
+                        column: x => x.WorkerId,
+                        principalTable: "Workers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "OrderDishes",
+                columns: table => new
+                {
+                    OrderId = table.Column<string>(type: "text", nullable: false),
+                    DishId = table.Column<string>(type: "text", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false),
+                    SaleId = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_OrderDishes", x => new { x.OrderId, x.DishId });
+                    table.ForeignKey(
+                        name: "FK_OrderDishes_Dishes_DishId",
+                        column: x => x.DishId,
+                        principalTable: "Dishes",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_OrderDishes_Sales_SaleId",
+                        column: x => x.SaleId,
+                        principalTable: "Sales",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Buyers_PhoneNumber",
+                table: "Buyers",
+                column: "PhoneNumber",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Dishes_DishName_IsDeleted",
+                table: "Dishes",
+                columns: new[] { "DishName", "IsDeleted" },
+                unique: true,
+                filter: "\"IsDeleted\" = FALSE");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DishHistories_DishId",
+                table: "DishHistories",
+                column: "DishId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_OrderDishes_DishId",
+                table: "OrderDishes",
+                column: "DishId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_OrderDishes_SaleId",
+                table: "OrderDishes",
+                column: "SaleId");
+
+            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_Salaries_WorkerId",
+                table: "Salaries",
+                column: "WorkerId");
+
+            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: "DishHistories");
+
+            migrationBuilder.DropTable(
+                name: "OrderDishes");
+
+            migrationBuilder.DropTable(
+                name: "Posts");
+
+            migrationBuilder.DropTable(
+                name: "Salaries");
+
+            migrationBuilder.DropTable(
+                name: "Dishes");
+
+            migrationBuilder.DropTable(
+                name: "Sales");
+
+            migrationBuilder.DropTable(
+                name: "Buyers");
+
+            migrationBuilder.DropTable(
+                name: "Workers");
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Migrations/20250525160705_ChangeFieldsInPost.Designer.cs

@@ -0,0 +1,328 @@
+// <auto-generated />
+using System;
+using AndDietCokeDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace AndDietCokeDatabase.Migrations
+{
+    [DbContext(typeof(AndDietCokeDbContext))]
+    [Migration("20250525160705_ChangeFieldsInPost")]
+    partial class ChangeFieldsInPost
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("DishType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("DishId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.ToTable("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.Property<string>("OrderId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.HasKey("OrderId", "DishId");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("SaleId");
+
+                    b.ToTable("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsConstantClient")
+                        .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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany("DishHistories")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany()
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AndDietCokeDatabase.Models.Sale", "Sale")
+                        .WithMany("OrderDishes")
+                        .HasForeignKey("SaleId");
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId");
+
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Navigation("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Migrations/20250525160705_ChangeFieldsInPost.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace AndDietCokeDatabase.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: "");
+        }
+
+        /// <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);
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Migrations/AndDietCokeDbContextModelSnapshot.cs

@@ -0,0 +1,325 @@
+// <auto-generated />
+using System;
+using AndDietCokeDatabase;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace AndDietCokeDatabase.Migrations
+{
+    [DbContext(typeof(AndDietCokeDbContext))]
+    partial class AndDietCokeDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("DishType")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("boolean");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishName", "IsDeleted")
+                        .IsUnique()
+                        .HasFilter("\"IsDeleted\" = FALSE");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("ChangeDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("DishId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("OldPrice")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.ToTable("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.Property<string>("OrderId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishId")
+                        .HasColumnType("text");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("SaleId")
+                        .HasColumnType("text");
+
+                    b.HasKey("OrderId", "DishId");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("SaleId");
+
+                    b.ToTable("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasColumnType("text");
+
+                    b.Property<string>("BuyerId")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsCancel")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsConstantClient")
+                        .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("AndDietCokeDatabase.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("AndDietCokeDatabase.Models.DishHistory", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany("DishHistories")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.OrderDish", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Dish", "Dish")
+                        .WithMany()
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AndDietCokeDatabase.Models.Sale", "Sale")
+                        .WithMany("OrderDishes")
+                        .HasForeignKey("SaleId");
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Sale");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Salary", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Salaries")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.HasOne("AndDietCokeDatabase.Models.Buyer", "Buyer")
+                        .WithMany("Sales")
+                        .HasForeignKey("BuyerId");
+
+                    b.HasOne("AndDietCokeDatabase.Models.Worker", "Worker")
+                        .WithMany("Sales")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Buyer");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Buyer", b =>
+                {
+                    b.Navigation("Sales");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Dish", b =>
+                {
+                    b.Navigation("DishHistories");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Sale", b =>
+                {
+                    b.Navigation("OrderDishes");
+                });
+
+            modelBuilder.Entity("AndDietCokeDatabase.Models.Worker", b =>
+                {
+                    b.Navigation("Salaries");
+
+                    b.Navigation("Sales");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Buyer.cs

@@ -0,0 +1,25 @@
+using AndDietCokeContracts.DataModels;
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+[AutoMap(typeof(BuyerDataModel), ReverseMap = true)]
+public class Buyer
+{
+    public required string Id { get; set; }
+
+    public required string FIO { get; set; }
+
+    public required string PhoneNumber { get; set; }
+
+    public double DiscountSize { get; set; }
+
+    [ForeignKey("BuyerId")]
+    public List<Sale>? Sales { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Dish.cs

@@ -0,0 +1,26 @@
+using AndDietCokeContracts.Enums;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+
+namespace AndDietCokeDatabase.Models;
+
+public class Dish
+{
+    public required string Id { get; set; }
+
+    public required string DishName { get; set; }
+
+    public DishType DishType { get; set; }
+
+    public double Price { get; set; }
+
+    public bool IsDeleted { get; set; }
+
+    [ForeignKey("DishId")]
+    public List<DishHistory>? DishHistories { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/DishHistory.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+public class DishHistory
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string DishId { get; set; }
+
+    public double OldPrice { get; set; }
+
+    public DateTime ChangeDate { get; set; }
+
+    public Dish? Dish { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/OrderDish.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+public class OrderDish
+{
+    public required string OrderId { get; set; }
+
+    public required string DishId { get; set; }
+
+    public int Count { get; set; }
+    public double Price { get; set; }
+
+    public Sale? Sale { get; set; }
+
+    public Dish? Dish { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Post.cs

@@ -0,0 +1,24 @@
+using AndDietCokeContracts.Enums;
+using AndDietCokeContracts.Infrastrusture.PostConfiguration;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+public class Post
+{
+    public required string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string PostId { get; set; }
+
+    public required string PostName { get; set; }
+
+    public PostType PostType { get; set; }
+
+    public required PostConfiguration Configuration { get; set; }
+    public bool IsActual { get; set; }
+    public DateTime ChangeDate { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Salary.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+public class Salary
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string WorkerId { get; set; }
+
+    public DateTime SalaryDate { get; set; }
+
+    public double WorkerSalary { get; set; }
+
+    public Worker? Worker { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Sale.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+public class Sale
+{
+    public string Id { get; set; } = Guid.NewGuid().ToString();
+
+    public required string WorkerId { get; set; }
+
+    public string? BuyerId { get; set; }
+
+    public DateTime SaleDate { get; set; }
+
+    public double Sum { get; set; }
+
+    public bool IsConstantClient { get; set; }
+
+    public bool IsCancel { get; set; }
+
+    public Worker? Worker { get; set; }
+
+    public Buyer? Buyer { get; set; }
+
+    [ForeignKey("SaleId")]
+    public List<OrderDish>? OrderDishes { get; set; }
+}

AndDietCokeProject/AndDietCokeDatabase/Models/Worker.cs

@@ -0,0 +1,41 @@
+using AndDietCokeContracts.DataModels;
+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeDatabase.Models;
+
+[AutoMap(typeof(WorkerDataModel), ReverseMap = true)]
+public class Worker
+{
+    public required string Id { get; set; }
+
+    public required string FIO { get; set; }
+
+    public required string PostId { get; set; }
+
+    public DateTime BirthDate { get; set; }
+
+    public DateTime EmploymentDate { get; set; }
+    public bool IsDeleted { get; set; }
+    public DateTime? DateOfDelete { get; set; }
+    [NotMapped]
+    public Post? Post { get; set; }
+
+
+    [ForeignKey("WorkerId")]
+    public List<Salary>? Salaries { get; set; }
+
+    [ForeignKey("WorkerId")]
+    public List<Sale>? Sales { get; set; }
+
+    public Worker AddPost(Post? post)
+    {
+        Post = post;
+        return this;
+    }
+}

AndDietCokeProject/AndDietCokeDatabase/SampleContextFactory.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace AndDietCokeDatabase;
+
+internal class SampleContextFactory : IDesignTimeDbContextFactory<AndDietCokeDbContext>
+{
+    public AndDietCokeDbContext CreateDbContext(string[] args)
+    {
+        return new AndDietCokeDbContext(new DefaultConfigurationDatabase());
+    }
+}

AndDietCokeProject/AndDietCokeProject.sln

@@ -1,11 +1,20 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.12.35707.178
+VisualStudioVersion = 17.7.34024.191
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AndDietCokeContracts", "AndDietCokeContracts\AndDietCokeContracts.csproj", "{775E4654-C135-47D1-A1FF-4B26160CA6CB}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AndDietCokeContracts", "AndDietCokeProject\AndDietCokeContracts.csproj", "{624595D1-D7AA-4448-AA30-4D5AA21AE6D6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AndDietCokeTests", "AndDietCokeTests\AndDietCokeTests.csproj", "{97CF49C2-6F17-4FCB-B2AD-D84AED6A1AF9}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AndDietCokeTests", "AndDietCokeTests\AndDietCokeTests.csproj", "{EABA3AD5-7690-448A-BEE6-010499DD8790}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AndDietCokeBuisnessLogic", "AndDietCokeBuisnessLogic\AndDietCokeBuisnessLogic.csproj", "{3C1C0E8F-5CB4-4E93-B20C-86FF4B248ECF}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AndDietCokeDatabase", "AndDietCokeDatabase\AndDietCokeDatabase.csproj", "{4AFC4FDC-F8CA-4CC5-84E2-162ADA98EDD4}"
+	ProjectSection(ProjectDependencies) = postProject
+		{624595D1-D7AA-4448-AA30-4D5AA21AE6D6} = {624595D1-D7AA-4448-AA30-4D5AA21AE6D6}
+	EndProjectSection
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AndDietCokeWebApi", "AndDietCokeWebApi\AndDietCokeWebApi.csproj", "{59659F17-4A33-47B1-951B-A329A547B3BF}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -13,16 +22,31 @@ Global
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{775E4654-C135-47D1-A1FF-4B26160CA6CB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{775E4654-C135-47D1-A1FF-4B26160CA6CB}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{775E4654-C135-47D1-A1FF-4B26160CA6CB}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{775E4654-C135-47D1-A1FF-4B26160CA6CB}.Release|Any CPU.Build.0 = Release|Any CPU
-		{97CF49C2-6F17-4FCB-B2AD-D84AED6A1AF9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{97CF49C2-6F17-4FCB-B2AD-D84AED6A1AF9}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{97CF49C2-6F17-4FCB-B2AD-D84AED6A1AF9}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{97CF49C2-6F17-4FCB-B2AD-D84AED6A1AF9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{624595D1-D7AA-4448-AA30-4D5AA21AE6D6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{624595D1-D7AA-4448-AA30-4D5AA21AE6D6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{624595D1-D7AA-4448-AA30-4D5AA21AE6D6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{624595D1-D7AA-4448-AA30-4D5AA21AE6D6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EABA3AD5-7690-448A-BEE6-010499DD8790}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EABA3AD5-7690-448A-BEE6-010499DD8790}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EABA3AD5-7690-448A-BEE6-010499DD8790}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EABA3AD5-7690-448A-BEE6-010499DD8790}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3C1C0E8F-5CB4-4E93-B20C-86FF4B248ECF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3C1C0E8F-5CB4-4E93-B20C-86FF4B248ECF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3C1C0E8F-5CB4-4E93-B20C-86FF4B248ECF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3C1C0E8F-5CB4-4E93-B20C-86FF4B248ECF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4AFC4FDC-F8CA-4CC5-84E2-162ADA98EDD4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4AFC4FDC-F8CA-4CC5-84E2-162ADA98EDD4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4AFC4FDC-F8CA-4CC5-84E2-162ADA98EDD4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4AFC4FDC-F8CA-4CC5-84E2-162ADA98EDD4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{59659F17-4A33-47B1-951B-A329A547B3BF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{59659F17-4A33-47B1-951B-A329A547B3BF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{59659F17-4A33-47B1-951B-A329A547B3BF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{59659F17-4A33-47B1-951B-A329A547B3BF}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9D9DF4B3-57A3-423C-B4C4-78AD94A0FD6E}
+	EndGlobalSection
 EndGlobal

AndDietCokeProject/AndDietCokeProject/AdapterContracts/IBuyerAdapter.cs

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

AndDietCokeProject/AndDietCokeProject/AdapterContracts/IDishAdapter.cs

@@ -0,0 +1,24 @@
+using AndDietCokeContracts.AdapterContracts.OperationResponses;
+using AndDietCokeContracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.AdapterContracts;
+
+public interface IDishAdapter
+{
+    DishOperationResponse GetList(bool includeDeleted);
+
+    DishOperationResponse GetHistory(string id);
+
+    DishOperationResponse GetElement(string data);
+
+    DishOperationResponse RegisterDish(DishBindingModel dishModel);
+
+    DishOperationResponse ChangeDishInfo(DishBindingModel dishModel);
+
+    DishOperationResponse RemoveDish(string id);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/IPostAdapter.cs

@@ -0,0 +1,26 @@
+using AndDietCokeContracts.AdapterContracts.OperationResponses;
+using AndDietCokeContracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.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);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/ISalaryAdapter.cs

@@ -0,0 +1,15 @@
+using AndDietCokeContracts.AdapterContracts.OperationResponses;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.AdapterContracts;
+
+public interface ISalaryAdapter
+{
+    SalaryOperationResponse GetListByPeriod(DateTime fromDate, DateTime toDate);
+    SalaryOperationResponse GetListByPeriodByEmployee(DateTime fromDate, DateTime toDate, string employeeId);
+    SalaryOperationResponse CalculateSalary(DateTime date);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/ISaleAdapter.cs

@@ -0,0 +1,26 @@
+using AndDietCokeContracts.AdapterContracts.OperationResponses;
+using AndDietCokeContracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.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 GetDishList(string id, DateTime fromDate, DateTime toDate);
+
+    SaleOperationResponse GetElement(string id);
+
+    SaleOperationResponse MakeSale(SaleBindingModel saleModel);
+
+    SaleOperationResponse CancelSale(string id);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/IWorkerAdapter.cs

@@ -0,0 +1,28 @@
+using AndDietCokeContracts.AdapterContracts.OperationResponses;
+using AndDietCokeContracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.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);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/BuyerOperationResponse.cs

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

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/DishOperationResponse.cs

@@ -0,0 +1,26 @@
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.AdapterContracts.OperationResponses;
+
+public class DishOperationResponse : OperationResponse
+{
+    public static DishOperationResponse OK(List<DishViewModel> data) => OK<DishOperationResponse, List<DishViewModel>>(data);
+
+    public static DishOperationResponse OK(List<DishHistoryViewModel> data) => OK<DishOperationResponse, List<DishHistoryViewModel>>(data);
+
+    public static DishOperationResponse OK(DishViewModel data) => OK<DishOperationResponse, DishViewModel>(data);
+
+    public static DishOperationResponse NoContent() => NoContent<DishOperationResponse>();
+
+    public static DishOperationResponse NotFound(string message) => NotFound<DishOperationResponse>(message);
+
+    public static DishOperationResponse BadRequest(string message) => BadRequest<DishOperationResponse>(message);
+
+    public static DishOperationResponse InternalServerError(string message) => InternalServerError<DishOperationResponse>(message);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/PostOperationResponse.cs

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

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/SalaryOperationResponse.cs

@@ -0,0 +1,22 @@
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.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);
+}

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/SaleOperationResponse.cs

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

AndDietCokeProject/AndDietCokeProject/AdapterContracts/OperationResponses/WorkerOperationResponse.cs

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

AndDietCokeProject/AndDietCokeProject/AndDietCokeContracts.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>preview</LangVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="14.0.0" />
+    <PackageReference Include="EntityFramework" Version="6.5.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.3.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.4" />
+    <PackageReference Include="Npgsql" Version="9.0.3" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+  </ItemGroup>
+
+</Project>

AndDietCokeProject/AndDietCokeProject/BindingModels/BuyerBindingModel.cs

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

AndDietCokeProject/AndDietCokeProject/BindingModels/DishBindingModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BindingModels;
+
+public class DishBindingModel
+{
+    public string? Id { get; set; }
+
+    public string? DishName { get; set; }
+
+    public int DishType { get; set; }
+
+    public double Price { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/BindingModels/OrderDishBindingModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BindingModels;
+
+public class OrderDishBindingModel
+{
+    public string? SaleId { get; set; }
+
+    public string? DishId { get; set; }
+
+    public int Count { get; set; }
+
+    public double Price { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/BindingModels/PostBindingModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BindingModels;
+
+public class PostBindingModel
+{
+    public string? Id { get; set; }
+    public string? PostType { get; set; }
+    public string? PostId => Id;
+    public string? PostName { get; set; }
+    public string? ConfigurationJson { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/BindingModels/SaleBindingModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BindingModels;
+
+public class SaleBindingModel
+{
+    public string? Id { get; set; }
+
+    public string? WorkerId { get; set; }
+
+    public string? BuyerId { get; set; }
+
+    public List<OrderDishBindingModel>? Dishes { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/BindingModels/WorkerBindingModel.cs

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

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/IBuyerBusinessLogicContract.cs

@@ -0,0 +1,18 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BisnessLogicsContracts;
+
+public interface IBuyerBusinessLogicContract
+{
+    List<BuyerDataModel> GetAllBuyers();
+    BuyerDataModel GetBuyerByData(string data);
+    void InsertBuyer(BuyerDataModel buyerDataModel);
+    void UpdateBuyer(BuyerDataModel buyerDataModel);
+    void DeleteBuyer(string id);
+}
+

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/IDishBusinessLogicContract.cs

@@ -0,0 +1,19 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BisnessLogicsContracts;
+
+public interface IDishBusinessLogicContract
+{
+    List<DishDataModel> GetAllDishes(bool onlyActive = true);
+    List<DishHistoryDataModel> GetDishHistoryByDish(string dishId);
+    DishDataModel GetDishByData(string data);
+    void InsertDish(DishDataModel dishDataModel);
+    void UpdateDish(DishDataModel dishDataModel);
+    void DeleteDish(string id);
+}
+

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/IPostBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BisnessLogicsContracts;
+
+public interface IPostBusinessLogicContract
+{
+    List<PostDataModel> GetAllPosts(bool onlyActive);
+    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);
+}
+

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/ISalaryBusinessLogicContract.cs

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

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/ISaleBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BisnessLogicsContracts;
+
+public interface ISaleBusinessLogicContract
+{
+    List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
+    List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+    List<SaleDataModel> GetAllSalesByBuyerByPeriod(string buyerId, DateTime fromDate, DateTime toDate);
+    List<SaleDataModel> GetAllSalesByDishByPeriod(string dishId, DateTime fromDate, DateTime toDate);
+    SaleDataModel GetSaleByData(string data);
+    void InsertSale(SaleDataModel saleDataModel);
+    void CancelSale(string id);
+}
+

AndDietCokeProject/AndDietCokeProject/BisnessLogicsContracts/IWorkerBusinessLogicContract.cs

@@ -0,0 +1,20 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.BisnessLogicsContracts;
+
+public interface IWorkerBusinessLogicContract
+{
+    List<WorkerDataModel> GetAllWorkers(bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkersByPost(string postId, bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkersByBirthDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+    List<WorkerDataModel> GetAllWorkersByEmploymentDate(DateTime fromDate, DateTime toDate, bool onlyActive = true);
+    WorkerDataModel GetWorkerByData(string data);
+    void InsertWorker(WorkerDataModel workerDataModel);
+    void UpdateWorker(WorkerDataModel workerDataModel);
+    void DeleteWorker(string id);
+}

AndDietCokeProject/AndDietCokeProject/DataModels/BuyerDataModel.cs

@@ -0,0 +1,37 @@
+using AndDietCokeContracts.Extensions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Numerics;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+using System.Xml;
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.Exceptions;
+
+namespace AndDietCokeContracts.DataModels;
+
+public class BuyerDataModel(string id, string fio, string phoneNumber, double discountSize) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string FIO { get; private set; } = fio;
+    public string PhoneNumber { get; private set; } = phoneNumber;
+    public double DiscountSize { get; private 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}$"))
+            throw new ValidationException("Field PhoneNumber is not a phone number");
+        if (!Regex.IsMatch(FIO, @"^[А-ЯЁA-Z][а-яёa-z]+(?:-[А-ЯЁA-Z][а-яёa-z]+)?\s[А-ЯЁA-Z][а-яёa-z]+(?:\s[А-ЯЁA-Z][а-яёa-z]+)?$"))
+            throw new ValidationException("Incorrect FIO input");
+    }
+}

AndDietCokeProject/AndDietCokeProject/DataModels/DishDataModel.cs

@@ -0,0 +1,37 @@
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace AndDietCokeContracts.DataModels;
+
+public class DishDataModel(string id, string dishName, DishType dishType, double price, bool isDeleted) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public string DishName { get; private set; } = dishName;
+    public DishType DishType { get; private set; } = dishType;
+    public double Price { get; private set; } = price;
+    public bool IsDeleted { get; private set; } = isDeleted;
+    
+    public DishDataModel(string id, string dishName, int dishType, double price) : this(id, dishName, (DishType)dishType, 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 (DishName.IsEmpty())
+            throw new ValidationException("Field DishName is empty");
+        if (DishType == DishType.None)
+            throw new ValidationException("Field DishType is empty");
+        if (Price <= 0)
+            throw new ValidationException("Field Price is less than or equal to 0");
+    }
+}

AndDietCokeProject/AndDietCokeProject/DataModels/DishHistoryDataModel.cs

@@ -1,6 +1,6 @@
-using AndDietCokeContracts.Exceptions;
-using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.Exceptions;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,13 +9,20 @@ using System.Threading.Tasks;
 
 namespace AndDietCokeContracts.DataModels;
 
-public class DishHistoryDataModel(string productId, double oldPrice, string orderid) : IValidation
-
+public class DishHistoryDataModel(string dishId, double oldPrice) : IValidation
 {
-    public string DishId { get; private set; } = productId;
+    private readonly DishDataModel? _dish;
+    public string DishId { get; private set; } = dishId;
     public double OldPrice { get; private set; } = oldPrice;
     public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
-    public string OrderId { get; private set; } = orderid;
+    public string DishName => _dish!.DishName;
+
+    public DishHistoryDataModel(string dishId, double oldPrice, DateTime changeDate, DishDataModel dish) : this(dishId, oldPrice)
+    {
+        ChangeDate = changeDate;
+        _dish = dish;
+    }
+
     public void Validate()
     {
         if (DishId.IsEmpty())
@@ -24,10 +31,6 @@ public class DishHistoryDataModel(string productId, double oldPrice, string orde
             throw new ValidationException("The value in the field DishId is not a unique identifier");
         if (OldPrice <= 0)
             throw new ValidationException("Field OldPrice is less than or equal to 0");
-        if (OrderId.IsEmpty())
-            throw new ValidationException("Field OrderId is empty");
-        if (!OrderId.IsGuid())
-            throw new ValidationException("The value in the field OrderId is not a unique identifier");
     }
-
 }
+

AndDietCokeProject/AndDietCokeProject/DataModels/OrderDishDataModel.cs

@@ -0,0 +1,40 @@
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.DataModels;
+
+public class OrderDishDataModel(string orderId, string dishId, int count, double price) : IValidation
+{
+    private readonly DishDataModel? _dish;
+    public string OrderId { get; private set; } = orderId;
+    public string DishId { get; private set; } = dishId;
+    public int Count { get; private set; } = count;
+    public double Price { get; private set; } = price;
+    public string DishName => _dish?.DishName ?? string.Empty;
+
+    public OrderDishDataModel(string saleId, string dishId, int count, double price, DishDataModel dish) : this(saleId, dishId, count, price)
+    {
+        _dish = dish;
+    }
+
+    public void Validate()
+    {
+        if (OrderId.IsEmpty())
+            throw new ValidationException("Field OrderId is empty");
+        if (!OrderId.IsGuid())
+            throw new ValidationException("The value in the field OrderId is not a unique identifier");
+        if (DishId.IsEmpty())
+            throw new ValidationException("Field DishId is empty");
+        if (!DishId.IsGuid())
+            throw new ValidationException("The value in the field DishId is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}

AndDietCokeProject/AndDietCokeProject/DataModels/PostDataModel.cs

@@ -0,0 +1,52 @@
+using AndDietCokeContracts.Enums;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using AndDietCokeContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+using AndDietCokeContracts.Infrastrusture.PostConfiguration;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json;
+
+namespace AndDietCokeContracts.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(WaiterPostConfiguration) => JsonConvert.DeserializeObject<WaiterPostConfiguration>(configurationJson)!,
+                nameof(ChefPostConfiguration) => JsonConvert.DeserializeObject<ChefPostConfiguration>(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 ConfigurationModel is not initialized");
+        if (ConfigurationModel!.Rate <= 0)
+            throw new ValidationException("Field Rate is less or equal zero");
+    }
+}
+

AndDietCokeProject/AndDietCokeProject/DataModels/SalaryDataModel.cs

@@ -0,0 +1,41 @@
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.DataModels;
+
+public class SalaryDataModel(string id, string workerId, DateTime salaryDate, double
+workerSalary) : IValidation
+{
+    private readonly WorkerDataModel? _worker;
+    public string Id { get; private set; } = id;
+    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 id, string workerId, DateTime salaryDate, double salary, WorkerDataModel worker) : this(id, workerId, salaryDate, salary)
+    {
+        _worker = worker;
+    }
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Salary Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("Salary Id is not a valid GUID");
+        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");
+    }
+}
+

AndDietCokeProject/AndDietCokeProject/DataModels/SaleDataModel.cs

@@ -0,0 +1,68 @@
+using AndDietCokeContracts.Enums;
+using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Extensions;
+using AndDietCokeContracts.Infrastrusture;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace AndDietCokeContracts.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 bool IsConstantClient { get; private set; }
+    public bool IsCancel { get; private set; } 
+    public List<OrderDishDataModel>? Dishes { 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, bool isConstantClient, bool isCancel, List<OrderDishDataModel> orderDishes)
+    {
+        Id = id;
+        WorkerId = workerId;
+        BuyerId = buyerId;
+        IsCancel = isCancel;
+        IsConstantClient = isConstantClient;
+        Dishes = orderDishes;
+        Sum = Dishes?.Sum(x => x.Price * x.Count) ?? 0;
+    }
+
+    public SaleDataModel(string id, string workerId, string? buyerId, double sum, bool isConstantClient, bool isCancel, List<OrderDishDataModel> orderDishes, WorkerDataModel worker, BuyerDataModel? buyer) : this(id, workerId, buyerId, isConstantClient, isCancel, orderDishes)
+    {
+        Sum = sum;
+        _worker = worker;
+        _buyer = buyer;
+    }
+
+    public SaleDataModel(string id, string workerId, string? buyerId, List<OrderDishDataModel> dishes) : this(id, workerId, buyerId, true, false, dishes) { }
+
+    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 ((Dishes?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include dishes");
+    }
+}

AndDietCokeProject/AndDietCokeProject/DataModels/WorkerDataModel.cs

@@ -1,50 +1,52 @@
-using AndDietCokeContracts.Enums;
-using AndDietCokeContracts.Exceptions;
+using AndDietCokeContracts.Exceptions;
 using AndDietCokeContracts.Extensions;
-using AndDietCokeContracts.Infrastructure;
-using System.Text.RegularExpressions;
+using AndDietCokeContracts.Infrastrusture;
+using Microsoft.Extensions.Hosting;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
 namespace AndDietCokeContracts.DataModels;
 
-public class EmployeeDataModel(string id, string fio, string positionId, PositionType positiontype, DateTime birthDate, DateTime employmentDate, bool isDeleted) : IValidation
+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 PositionId { get; private set; } = positionId;
-    public PositionType PositionType { get; private set; } = positiontype;
+    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 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 (!Regex.IsMatch(FIO, @"^([А-ЯЁ][а-яё]*(-[А-ЯЁ][а-яё]*)?)\s([А-ЯЁ]\.?\s?([А-ЯЁ]\.?\s?)?)?$"))
-            throw new ValidationException("Field FIO is not a fio");
-
-        if (PositionId.IsEmpty())
+        if (PostId.IsEmpty())
             throw new ValidationException("Field PostId is empty");
-
-        if (!PositionId.IsGuid())
+        if (!PostId.IsGuid())
             throw new ValidationException("The value in the field PostId is not a unique identifier");
-
-        if (BirthDate.Date > DateTime.Now.AddYears(-14).Date)
+        if (BirthDate.Date > DateTime.Now.AddYears(-16).Date)
             throw new ValidationException($"Minors cannot be hired (BirthDate = {BirthDate.ToShortDateString()})");
-
-        if (PositionType == PositionType.None)
-            throw new ValidationException("Field PositionType is empty");
-
         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($"Minors cannot be hired (EmploymentDate - {EmploymentDate.ToShortDateString()}, BirthDate -{BirthDate.ToShortDateString()})");
+        if ((EmploymentDate - BirthDate).TotalDays / 365 < 16) //EmploymentDate.Year - BirthDate.Year
+            throw new ValidationException($"Minors cannot be hired (EmploymentDate - {EmploymentDate.ToShortDateString()}, BirthDate - {BirthDate.ToShortDateString()})");
     }
-}
+}

AndDietCokeProject/AndDietCokeProject/Enums/DishType.cs

@@ -9,10 +9,7 @@ namespace AndDietCokeContracts.Enums;
 public enum DishType
 {
     None = 0,
-    Margherita = 1,
-    Pepperoni = 2,
-    BBQChicken = 3,
-    Veggie = 4,
-    Cola = 5
+    Base = 1,
+    Dessert = 2,
+    Drink = 3
 }
-

AndDietCokeProject/AndDietCokeProject/Enums/PostType.cs

@@ -6,11 +6,11 @@ using System.Threading.Tasks;
 
 namespace AndDietCokeContracts.Enums;
 
-public enum PositionType
+public enum PostType
 {
     None = 0,
     Waiter = 1,
-    Сhef = 2,
-    Manager = 3,
-    Assistant = 4
+    Chef = 2,
+    Packer = 3
 }
+

AndDietCokeProject/AndDietCokeProject/Exceptions/ElementDeletedException.cs

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

AndDietCokeProject/AndDietCokeProject/Exceptions/ElementExistsException.cs

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

AndDietCokeProject/AndDietCokeProject/Exceptions/ElementNotFoundException.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Exceptions;
+
+public class ElementNotFoundException : Exception
+{
+    public string Value { get; private set; }
+    public ElementNotFoundException(string value) : base($"Element not found at value = { value}")
+    {
+    Value = value;
+    }
+}
+

AndDietCokeProject/AndDietCokeProject/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 AndDietCokeContracts.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}") { }
+}

AndDietCokeProject/AndDietCokeProject/Exceptions/NullListException.cs

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

AndDietCokeProject/AndDietCokeProject/Exceptions/StorageException.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Exceptions;
+
+public class StorageException : Exception
+{
+    public StorageException(Exception ex) : base($"Error while working in storage: { ex.Message}", ex) { }
+}
+

AndDietCokeProject/AndDietCokeProject/Exceptions/ValidationException.cs

@@ -8,8 +8,5 @@ namespace AndDietCokeContracts.Exceptions;
 
 public class ValidationException : Exception
 {
-    public ValidationException(string message) : base(message) 
-    {
-    
-    }
+    public ValidationException(string message) : base(message) { }
 }

AndDietCokeProject/AndDietCokeProject/Extensions/DateTimeExtensions.cs

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

AndDietCokeProject/AndDietCokeProject/Infrastrusture/IConfigurationDatabase.cs

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

AndDietCokeProject/AndDietCokeProject/Infrastrusture/IConfigurationSalary.cs

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

AndDietCokeProject/AndDietCokeProject/Infrastrusture/IValidation.cs

@@ -4,10 +4,9 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace AndDietCokeContracts.Infrastructure
+namespace AndDietCokeContracts.Infrastrusture;
+
+public interface IValidation
 {
-    public interface IValidation
-    {
-        void Validate();
-    }
+    void Validate();
 }

AndDietCokeProject/AndDietCokeProject/Infrastrusture/OperationResponse.cs

@@ -0,0 +1,42 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Infrastrusture;
+
+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 };
+}

AndDietCokeProject/AndDietCokeProject/Infrastrusture/PostConfiguration/ChefPostConfiguration.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Infrastrusture.PostConfiguration;
+
+public class ChefPostConfiguration : PostConfiguration
+{
+    public override string Type => nameof(ChefPostConfiguration);
+
+    public double PersonalCountTrendPremium { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/Infrastrusture/PostConfiguration/PostConfiguration.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Infrastrusture.PostConfiguration;
+
+public class PostConfiguration
+{
+    public virtual string Type => nameof(PostConfiguration);
+
+    public double Rate { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/Infrastrusture/PostConfiguration/WaiterPostConfiguration.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.Infrastrusture.PostConfiguration;
+
+public class WaiterPostConfiguration : PostConfiguration
+{
+    public override string Type => nameof(WaiterPostConfiguration);
+
+    public double SalePercent { get; set; }
+
+    public double BonusForExtraSales { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/StoragesContracts/IBuyerStorageContract.cs

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

AndDietCokeProject/AndDietCokeProject/StoragesContracts/IDishStorageContract.cs

@@ -0,0 +1,18 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.StoragesContracts;
+public interface IDishStorageContract
+{
+    List<DishDataModel> GetList(bool onlyActive = true);
+    List<DishHistoryDataModel> GetHistoryByDishId(string dishId);
+    DishDataModel? GetElementById(string id);
+    DishDataModel? GetElementByName(string name);
+    void AddElement(DishDataModel dishDataModel);
+    void UpdElement(DishDataModel dishDataModel);
+    void DelElement(string id);
+}

AndDietCokeProject/AndDietCokeProject/StoragesContracts/IPostStorageContract.cs

@@ -0,0 +1,21 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.StoragesContracts;
+
+public interface IPostStorageContract
+{
+    List<PostDataModel> GetList(bool onlyActual = true);
+    List<PostDataModel> GetPostWithHistory(string postId);
+    PostDataModel? GetElementById(string id);
+    PostDataModel? GetElementByName(string name);
+    void AddElement(PostDataModel postDataModel);
+    void UpdElement(PostDataModel postDataModel);
+    void DelElement(string id);
+    void ResElement(string id);
+}
+

AndDietCokeProject/AndDietCokeProject/StoragesContracts/ISalaryStorageContract.cs

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

AndDietCokeProject/AndDietCokeProject/StoragesContracts/ISaleStorageContract.cs

@@ -0,0 +1,17 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.StoragesContracts;
+
+public interface ISaleStorageContract
+{
+    List<SaleDataModel> GetList(DateTime? startDate = null, DateTime? endDate = null, string? workerId = null, string? buyerId = null, string? dishId = null);
+    SaleDataModel? GetElementById(string id);
+    void AddElement(SaleDataModel saleDataModel);
+    void DelElement(string id);
+}
+

AndDietCokeProject/AndDietCokeProject/StoragesContracts/IWorkerStorageContract.cs

@@ -0,0 +1,20 @@
+using AndDietCokeContracts.DataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.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);
+    public int GetWorkerTrend(DateTime fromPeriod, DateTime toPeriod);
+}
+

AndDietCokeProject/AndDietCokeProject/ViewModels/BuyerViewModel.cs

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

AndDietCokeProject/AndDietCokeProject/ViewModels/DishHistoryViewModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.ViewModels;
+
+public class DishHistoryViewModel
+{
+    public required string DishName { get; set; }
+
+    public double OldPrice { get; set; }
+
+    public DateTime ChangeDate { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/ViewModels/DishViewModel.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.ViewModels;
+
+public class DishViewModel
+{
+    public required string Id { get; set; }
+
+    public required string DishName { get; set; }
+
+    public required string DishType { get; set; }
+
+    public double Price { get; set; }
+
+    public bool IsDeleted { get; set; }
+}

AndDietCokeProject/AndDietCokeProject/ViewModels/OrderDishViewModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AndDietCokeContracts.ViewModels;
+
+public class OrderDishViewModel
+{
+    public required string DishId { get; set; }
+
+    public required string DishName { get; set; }
+
+    public int Count { get; set; }
+
+    public double Price { get; set; }
+}