North_Bridge/North_Bridge_Contract/BusinessLogicsContracts/IPostBusinessLogicContract.cs

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+using North_Bridge_Contract.DataModels;
+
+namespace North_Bridge_Contract.BusinessLogicsContracts;
+
+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);
+}

North_Bridge/North_Bridge_Contract/BusinessLogicsContracts/IProductBusinessLogicContract.cs

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+using North_Bridge_Contract.DataModels;
+
+namespace North_Bridge_Contract.BusinessLogicsContracts;
+
+public interface IProductBusinessLogicContract
+{
+    List<ProductDataModel> GetAllProducts(bool onlyActive = true);
+    
+    List<ProductHistoryDataModel> GetProductHistoryByProduct(string productId);
+    
+    ProductDataModel GetProductByData(string data);
+    
+    void InsertProduct(ProductDataModel productDataModel);
+    
+    void UpdateProduct(ProductDataModel productDataModel);
+    
+    void DeleteProduct(string id);
+}

North_Bridge/North_Bridge_Contract/BusinessLogicsContracts/ISalaryBusinessLogicContract.cs

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

North_Bridge/North_Bridge_Contract/BusinessLogicsContracts/ISaleBusinessLogicContract.cs

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+using North_Bridge_Contract.DataModels;
+
+namespace North_Bridge_Contract.BusinessLogicsContracts;
+
+public interface ISaleBusinessLogicContract
+{
+    List<SaleDataModel> GetAllSalesByPeriod(DateTime fromDate, DateTime toDate);
+    
+    List<SaleDataModel> GetAllSalesByWorkerByPeriod(string workerId, DateTime fromDate, DateTime toDate);
+    
+    List<SaleDataModel> GetAllSalesByProductByPeriod(string productId, DateTime fromDate, DateTime toDate);
+    
+    SaleDataModel GetSaleByData(string data);
+    
+    void InsertSale(SaleDataModel saleDataModel);
+    
+    void CancelSale(string id);
+}

North_Bridge/North_Bridge_Contract/BusinessLogicsContracts/IWorkerBusinessLogicContract.cs

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