недоделанное, с ошибками

ComputerShopBusinessLogic/BusinessLogics/ReportImplementerLogic.cs

@@ -0,0 +1,41 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.BusinessLogicContracts;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.StorageContracts;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopBusinessLogic.BusinessLogics
+{
+	public class ReportImplementerLogic : IReportImplementerLogic
+	{
+		private readonly IAssemblyStorage _assemblyStorage;
+		private readonly IRequestStorage _requestStorage;
+		private readonly IOrderStorage _orderStorage;
+
+		public ReportImplementerLogic(IAssemblyStorage assemblyStorage, IRequestStorage requestStorage, IOrderStorage orderStorage)
+		{
+			_assemblyStorage = assemblyStorage;
+			_requestStorage = requestStorage;
+			_orderStorage = orderStorage;
+		}
+		/// <summary>
+		/// Отчёт для doc/xls
+		/// </summary>
+		/// <returns></returns>
+		public List<ReportOrderAssemblyViewModel> GetOrderAssemblies(List<OrderSearchModel> selectedOrders) {
+			//!!!исправить на filteredList
+			return _orderStorage.GetReportWithAssembly(selectedOrders).Select(x => new ReportOrderAssemblyViewModel
+			{
+				OrderId = x.Id,
+				DateCreateOrder = x.DateCreate,
+				OrderSum = x.Sum,
+
+			});
+		}
+	}
+}

ComputerShopContracts/BindingModels/ReportBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.BindingModels
+{
+	public class ReportBindingModel
+	{
+		public string FileName { get; set; } = string.Empty;
+		public DateTime? DateFrom { get; set; }
+		public DateTime? DateTo { get; set; }
+	}
+}

ComputerShopContracts/BusinessLogicContracts/IReportImplementerLogic.cs

@@ -0,0 +1,28 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.BusinessLogicContracts
+{
+	public interface IReportImplementerLogic
+	{
+		/// <summary>
+		/// Получение отчёта для word/excel
+		/// </summary>
+		/// <returns></returns>
+		List<ReportOrderAssemblyViewModel> GetOrderAssemblies();
+
+		/// <summary>
+		/// Получение отчёта для почты
+		/// </summary>
+		/// <returns></returns>
+		List<ReportOrderRequestAssemblyViewModel> GetOrderRequestAssemblies();
+		void SaveOrderAssembliesToWordFile(ReportBindingModel model);
+
+		void SaveOrderAssembliesToExcelFile(ReportBindingModel model);
+	}
+}

ComputerShopContracts/StorageContracts/IOrderStorage.cs

@@ -17,5 +17,6 @@ namespace ComputerShopContracts.StorageContracts
 		OrderViewModel? Insert(OrderBindingModel model);
 		OrderViewModel? Update(OrderBindingModel model);
 		OrderViewModel? Delete(OrderBindingModel model);
+		List<OrderViewModel> GetReportWithAssembly(List<OrderSearchModel> model);
 	}
 }

ComputerShopContracts/ViewModels/ReportOrderAssemblyViewModel.cs

@@ -0,0 +1,23 @@
+using ComputerShopDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.ViewModels
+{
+	public class ReportOrderAssemblyViewModel
+	{
+		//!!!мб тут хранить списки промежуточных сущностей
+		public int OrderId { get; set; }
+		public DateTime DateCreateOrder { get; set; }
+		public double OrderSum { get; set; }
+
+		public OrderStatus OrderStatus { get; set; }
+
+		public string AssemblyName { get; set; }
+		public string AssemblyCategory { get; set; }
+		public double AssemblyCost { get; set; }
+	}
+}

ComputerShopContracts/ViewModels/ReportOrderRequestAssemblyViewModel.cs

@@ -0,0 +1,25 @@
+using ComputerShopDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.ViewModels
+{
+	public class ReportOrderRequestAssemblyViewModel
+	{
+		//!!!мб тут хранить списки промежуточных сущностей
+		public int OrderID { get; set; }
+		public DateTime DateCreateOrder { get; set; }
+		public double OrderSum { get; set; }
+
+		public OrderStatus OrderStatus { get; set; }
+		public int RequestId { get; set; }
+		public string ClientFIO { get; set; }
+		public DateTime DateRequest { get; set; }
+		public string AssemblyName { get; set; }
+		public string AssemblyCategory { get; set; }
+		public double AssemblyCost { get; set; }
+	}
+}

ComputerShopDatabaseImplement/Implements/OrderStorage.cs

@@ -10,11 +10,13 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using static Microsoft.EntityFrameworkCore.DbLoggerCategory;
 
 namespace ComputerShopDatabaseImplement.Implements
 {
 	public class OrderStorage : IOrderStorage
 	{
+		//id пользователя учитывается в GetFilteredList
 		public List<OrderViewModel> GetFullList()
 		{
 			using var context = new ComputerShopDatabase();
@@ -70,6 +72,56 @@ namespace ComputerShopDatabaseImplement.Implements
 					.ToList();
 		}
 
+		//получение данных для отчёта сборок по выбранным заказам
+		public List<ReportOrderAssemblyViewModel> GetReportWithAssembly(List<OrderSearchModel> selectedModels)
+		{
+			using var context = new ComputerShopDatabase();
+			//id заказов, которые выбрал пользователь
+			List<int?> id_of_selected_models = selectedModels.Select(x => x.Id).ToList();
+
+			//те заказы из бд, которые выбрал пользователь и имеют сборку
+			return context.Orders.Include(x => x.Requests)
+				.ThenInclude(x => x.Request)
+				.ThenInclude(x => x.Assembly)
+				.Where(x => id_of_selected_models.Contains(x.Id) && x.Requests.Any(r => r.Request.Assembly != null))
+
+
+
+				context.Orders
+				.Where(x => id_of_selected_models.Contains(x.Id) && x.Requests.Any(r => r.Request.Assembly != null))
+			foreach (var selectedModel in selectedModels)
+			{
+				//заказ, у которого должна быть сборка
+				var order = context.Orders.FirstOrDefault(x => x.Id == selectedModel.Id && x.Requests.Any(r => r.Request.Assembly != null));
+				//если у заказа нет сборки, то его не надо обрабатывать 
+				if (order == null)
+				{
+					continue;
+				}
+
+			}
+			var ordersWithAssemblies = selectedModels
+
+			//возвращение тех заказов, кот. принадлежат пользователю и кот. имеют сборку в соответствующей заявке
+			return context.Orders
+				.Where(x => x.UserId == model.UserId && x.Requests.Any(r => r.Request.Assembly != null))
+				.Include(x => x.Requests)
+				.ThenInclude(x => x.Request)
+				.ThenInclude(x => x.Assembly)
+				.ToList()
+				.Select(x => new ReportOrderAssemblyViewModel
+				{
+					OrderId = x.Id,
+					DateCreateOrder = x.DateCreate,
+					OrderSum = x.Sum,
+					OrderStatus = x.Status,
+					AssemblyName = x.Requests.FirstOrDefault(r => r.Request.Assembly != null)?.Request.Assembly.AssemblyName,
+
+
+				})
+				.ToList();
+		}
+
 		//Поиск только по id, потому что другие поля не уникальные - нет смысла искать 1 элемент
 		public OrderViewModel? GetElement(OrderSearchModel model)
 		{

ComputerShopDatabaseImplement/Implements/RequestStorage.cs

@@ -14,6 +14,7 @@ namespace ComputerShopDatabaseImplement.Implements
 {
 	public class RequestStorage : IRequestStorage
 	{
+		//id пользователя учитывается в GetFilteredList
 		public List<RequestViewModel> GetFullList()
 		{
 			using var context = new ComputerShopDatabase();

ComputerShopDatabaseImplement/Implements/ShipmentStorage.cs

@@ -14,6 +14,7 @@ namespace ComputerShopDatabaseImplement.Implements
 {
 	public class ShipmentStorage : IShipmentStorage
 	{
+		//id пользователя учитывается в GetFilteredList
 		public List<ShipmentViewModel> GetFullList()
 		{
 			using var context = new ComputerShopDatabase();