Наполнение классов. Создание БД. Миграция.

SUBD/SUBD/ComponentEntity/Component.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SUBD.ComponentEntity
+{
+	public class Component : IComponentModel
+	{
+		public int Id { get; private set; }
+		[Required]
+		public string ComponentName { get; private set; } = string.Empty;
+		[Required]
+		public double Cost { get; set; }
+		public static Component? Create(ComponentBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Component()
+			{
+				Id = model.Id,
+				ComponentName = model.ComponentName,
+				Cost = model.Cost
+			};
+		}
+		public static Component Create(ComponentViewModel model)
+		{
+			return new Component
+			{
+				Id = model.Id,
+				ComponentName = model.ComponentName,
+				Cost = model.Cost
+			};
+		}
+		public void Update(ComponentBindingModel model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ComponentName = model.ComponentName;
+			Cost = model.Cost;
+		}
+		public ComponentViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComponentName = ComponentName,
+			Cost = Cost
+		};
+	}
+}

SUBD/SUBD/ComponentEntity/ComponentLogic.cs

@@ -0,0 +1,94 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SUBD.ComponentEntity
+{
+	public class ComponentLogic : IComponentLogic
+	{
+		private readonly IComponentStorage _componentStorage;
+		public ComponentLogic(IComponentStorage componentStorage)
+		{
+			_componentStorage = componentStorage;
+		}
+		public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
+		{
+			var list = model == null ? _componentStorage.GetFullList() : _componentStorage.GetFilteredList(model);
+			if (list == null)
+			{
+				return null;
+			}
+			return list;
+		}
+		public ComponentViewModel? ReadElement(ComponentSearchModel model)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+			var element = _componentStorage.GetElement(model);
+			if (element == null)
+			{
+				return null;
+			}
+			return element;
+		}
+		public bool Create(ComponentBindingModel model)
+		{
+			CheckModel(model);
+			if (_componentStorage.Insert(model) == null)
+			{
+				return false;
+			}
+			return true;
+		}
+		public bool Update(ComponentBindingModel model)
+		{
+			CheckModel(model);
+			if (_componentStorage.Update(model) == null)
+			{
+				return false;
+			}
+			return true;
+		}
+		public bool Delete(ComponentBindingModel model)
+		{
+			CheckModel(model, false);
+			if (_componentStorage.Delete(model) == null)
+			{
+				return false;
+			}
+			return true;
+		}
+		private void CheckModel(ComponentBindingModel model, bool withParams = true)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+			if (!withParams)
+			{
+				return;
+			}
+			if (string.IsNullOrEmpty(model.ComponentName))
+			{
+				throw new ArgumentNullException("Нет названия компонента",
+			   nameof(model.ComponentName));
+			}
+			if (model.Cost <= 0)
+			{
+				throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Cost));
+			}
+			var element = _componentStorage.GetElement(new ComponentSearchModel
+			{
+				ComponentName = model.ComponentName
+			});
+			if (element != null && element.Id != model.Id)
+			{
+				throw new InvalidOperationException("Компонент с таким названием уже есть");
+			}
+		}
+	}
+}

SUBD/SUBD/ComponentEntity/ComponentStorage.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SUBD.ComponentEntity
+{
+	public class ComponentStorage : IComponentStorage
+	{
+		public List<ComponentViewModel> GetFullList()
+		{
+			using var context = new ComponentsDatabase();
+			return context.Components.Select(x => x.GetViewModel).ToList();
+		}
+
+		public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComponentName))
+			{
+				return new();
+			}
+			using var context = new ComponentsDatabase();
+			return context.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+		}
+
+		public ComponentViewModel? GetElement(ComponentSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			using var context = new ComponentsDatabase();
+			return context.Components.FirstOrDefault(x =>
+			(!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
+			(model.Id.HasValue && x.Id == model.Id))
+				?.GetViewModel;
+		}
+
+		public ComponentViewModel? Insert(ComponentBindingModel model)
+		{
+			var newComponent = Component.Create(model);
+			if (newComponent == null)
+			{
+				return null;
+			}
+			using var context = new ComponentsDatabase();
+			context.Components.Add(newComponent);
+			context.SaveChanges();
+			return newComponent.GetViewModel;
+		}
+
+		public ComponentViewModel? Update(ComponentBindingModel model)
+		{
+			using var context = new ComponentsDatabase();
+			var component = context.Components.FirstOrDefault(x => x.Id == model.Id);
+			if (component == null)
+			{
+				return null;
+			}
+			component.Update(model);
+			context.SaveChanges();
+			return component.GetViewModel;
+		}
+
+		public ComponentViewModel? Delete(ComponentBindingModel model)
+		{
+			using var context = new ComponentsDatabase();
+			var element = context.Components.FirstOrDefault(rec => rec.Id == model.Id);
+			if (element != null)
+			{
+				context.Components.Remove(element);
+				context.SaveChanges();
+				return element.GetViewModel;
+			}
+			return null;
+		}
+	}
+}

SUBD/SUBD/ComponentEntity/ComponentsDatabase.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static System.Windows.Forms.VisualStyles.VisualStyleElement;
+
+namespace SUBD.ComponentEntity
+{
+	public class ComponentsDatabase : DbContext
+	{
+		protected override void OnConfiguring(DbContextOptionsBuilder OptionsBuilder)
+		{
+			if (OptionsBuilder.IsConfigured == false)
+			{
+				OptionsBuilder.UseNpgsql(@"Host=localhost;Database=Components;Username=postgres;Password=postgres");
+			}
+
+			base.OnConfiguring(OptionsBuilder);
+
+			AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+			AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+		}
+
+		public virtual DbSet<Component> Components { set; get; }
+	}
+}

SUBD/SUBD/ComponentEntity/IComponentStorage.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SUBD.ComponentEntity
+{
+	public interface IComponentStorage
+	{
+		List<ComponentViewModel> GetFullList();
+		List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
+		ComponentViewModel? GetElement(ComponentSearchModel model);
+		ComponentViewModel? Insert(ComponentBindingModel model);
+		ComponentViewModel? Update(ComponentBindingModel model);
+		ComponentViewModel? Delete(ComponentBindingModel model);
+	}
+}

SUBD/SUBD/Migrations/20240507170902_Initial.Designer.cs

@@ -0,0 +1,49 @@
+// <auto-generated />
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using SUBD.ComponentEntity;
+
+#nullable disable
+
+namespace SUBD.Migrations
+{
+    [DbContext(typeof(ComponentsDatabase))]
+    [Migration("20240507170902_Initial")]
+    partial class Initial
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SUBD.ComponentEntity.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

SUBD/SUBD/Migrations/20240507170902_Initial.cs

@@ -0,0 +1,36 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SUBD.Migrations
+{
+    /// <inheritdoc />
+    public partial class Initial : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComponentName = table.Column<string>(type: "text", nullable: false),
+                    Cost = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Components");
+        }
+    }
+}

SUBD/SUBD/Migrations/ComponentsDatabaseModelSnapshot.cs

@@ -0,0 +1,46 @@
+// <auto-generated />
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using SUBD.ComponentEntity;
+
+#nullable disable
+
+namespace SUBD.Migrations
+{
+    [DbContext(typeof(ComponentsDatabase))]
+    partial class ComponentsDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SUBD.ComponentEntity.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

SUBD/SUBD/Program.cs

@@ -1,17 +1,31 @@
+using SUBD.ComponentEntity;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+
 namespace SUBD
 {
 	internal static class Program
 	{
+		private static ServiceProvider? _serviceProvider;
+		public static ServiceProvider? ServiceProvider => _serviceProvider;
 		/// <summary>
 		///  The main entry point for the application.
 		/// </summary>
 		[STAThread]
 		static void Main()
 		{
-			// To customize application configuration such as set high DPI settings or default font,
-			// see https://aka.ms/applicationconfiguration.
 			ApplicationConfiguration.Initialize();
-			Application.Run(new FormSushi());
+			var services = new ServiceCollection();
+			ConfigureServices(services);
+			_serviceProvider = services.BuildServiceProvider();
+			Application.Run(_serviceProvider.GetRequiredService<FormComponents>());
+		}
+		private static void ConfigureServices(ServiceCollection services)
+		{
+			services.AddTransient<IComponentStorage, ComponentStorage>();
+			services.AddTransient<IComponentLogic, ComponentLogic>();
+			services.AddTransient<FormComponent>();
+			services.AddTransient<FormComponents>();
 		}
 	}
 }

SUBD/SUBD/SUBD.csproj

@@ -8,4 +8,18 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.2" />
+  </ItemGroup>
+
 </Project>