Классы и интерфейс для отчета

FurnitureAssembly/FurnitureAssemblyContracts/BindingModels/ReportBindingModel.cs

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+namespace FurnitureAssemblyContracts.BindingModels
+{
+    public class ReportBindingModel 
+    {
+        public string FileName { get; set; } = string.Empty;
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/BusinessLogicsContarcts/IReportLogic.cs

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+using FurnitureAssemblyContracts.BindingModels;
+using FurnitureAssemblyContracts.ViewModels;
+
+namespace FurnitureAssemblyContracts.BusinessLogicsContarcts
+{
+    public interface IReportLogic
+    {
+        /// <summary>
+        /// Получение списка компонент с указанием, в каких изделиях используются
+        /// </summary>
+        /// <returns></returns>
+        List<ReportFurnitureComponentViewModel> GetProductComponent();
+        /// <summary>
+        /// Получение списка заказов за определенный период
+        /// </summary>
+        /// <param name="model"></param>
+        /// <returns></returns>
+        List<ReportOrdersViewModel> GetOrders(ReportBindingModel model);
+        /// <summary>
+        /// Сохранение компонент в файл-Word
+        /// </summary>
+        /// <param name="model"></param>
+        void SaveComponentsToWordFile(ReportBindingModel model);
+        /// <summary>
+        /// Сохранение компонент с указаеним продуктов в файл-Excel
+        /// </summary>
+        /// <param name="model"></param>
+        void SaveProductComponentToExcelFile(ReportBindingModel model);
+        /// <summary>
+        /// Сохранение заказов в файл-Pdf
+        /// </summary>
+        /// <param name="model"></param>
+        void SaveOrdersToPdfFile(ReportBindingModel model);
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/ViewModels/ReportFurnitureComponentViewModel.cs

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+namespace FurnitureAssemblyContracts.ViewModels
+{
+    public class ReportFurnitureComponentViewModel
+    {
+        public string ComponentName { get; set; } = string.Empty;
+        public int TotalCount { get; set; }
+        public List<Tuple<string, int>> Furnitures { get; set; } = new();
+
+    }
+}

FurnitureAssembly/FurnitureAssemblyContracts/ViewModels/ReportOrdersViewModel.cs

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+namespace FurnitureAssemblyContracts.ViewModels
+{
+    public class ReportOrdersViewModel
+    {
+        public int Id { get; set; }
+        public DateTime DateCreate { get; set; }
+        public string FurnitureName { get; set; } = string.Empty;
+        public double Sum { get; set; }
+
+    }
+}