add dao

data/DAO/Group.cs

@@ -10,5 +10,7 @@ namespace data.DAO
     {
         public int Id {  get; set; }
         public String Name { get; set; }
+        public virtual IEnumerable<UserDAO> Users { get; set; }
+
     }
 }

data/DAO/Presence.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace data.DAO
+{
+    internal class Presence
+    {
+    }
+}

data/DAO/User.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace data.DAO
 {
-    internal class User
+    internal class UserDAO
     {
         public Guid Guid { get; set; }
         public string Name { get; set; }

data/Migrations/20241115163726_InitialCreate.Designer.cs

@@ -0,0 +1,83 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using data;
+
+#nullable disable
+
+namespace data.Migrations
+{
+    [DbContext(typeof(RemoteDatabseContext))]
+    [Migration("20241115163726_InitialCreate")]
+    partial class InitialCreate
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("data.DAO.GroupDAO", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("groups");
+                });
+
+            modelBuilder.Entity("data.DAO.UserDAO", b =>
+                {
+                    b.Property<Guid>("Guid")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("GroupId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Guid");
+
+                    b.HasIndex("GroupId");
+
+                    b.ToTable("users");
+                });
+
+            modelBuilder.Entity("data.DAO.UserDAO", b =>
+                {
+                    b.HasOne("data.DAO.GroupDAO", "Group")
+                        .WithMany("Users")
+                        .HasForeignKey("GroupId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Group");
+                });
+
+            modelBuilder.Entity("data.DAO.GroupDAO", b =>
+                {
+                    b.Navigation("Users");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

data/Migrations/20241115163726_InitialCreate.cs

@@ -0,0 +1,63 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace data.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "groups",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_groups", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "users",
+                columns: table => new
+                {
+                    Guid = table.Column<Guid>(type: "uuid", nullable: false),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    GroupId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_users", x => x.Guid);
+                    table.ForeignKey(
+                        name: "FK_users_groups_GroupId",
+                        column: x => x.GroupId,
+                        principalTable: "groups",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_users_GroupId",
+                table: "users",
+                column: "GroupId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "users");
+
+            migrationBuilder.DropTable(
+                name: "groups");
+        }
+    }
+}

data/Migrations/RemoteDatabseContextModelSnapshot.cs

@@ -0,0 +1,80 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using data;
+
+#nullable disable
+
+namespace data.Migrations
+{
+    [DbContext(typeof(RemoteDatabseContext))]
+    partial class RemoteDatabseContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("data.DAO.GroupDAO", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("groups");
+                });
+
+            modelBuilder.Entity("data.DAO.UserDAO", b =>
+                {
+                    b.Property<Guid>("Guid")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("GroupId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Guid");
+
+                    b.HasIndex("GroupId");
+
+                    b.ToTable("users");
+                });
+
+            modelBuilder.Entity("data.DAO.UserDAO", b =>
+                {
+                    b.HasOne("data.DAO.GroupDAO", "Group")
+                        .WithMany("Users")
+                        .HasForeignKey("GroupId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Group");
+                });
+
+            modelBuilder.Entity("data.DAO.GroupDAO", b =>
+                {
+                    b.Navigation("Users");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

data/RemoteDatabseContext.cs

@@ -0,0 +1,32 @@
+using data.DAO;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace data
+{
+    internal class RemoteDatabseContext: DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseNpgsql("Host=localhost;port=5432;Password=admin;Username=postgres;Database=semesterWork");
+        }
+
+        DbSet<GroupDAO> groups { get; set; }
+
+        DbSet<UserDAO> users { get; set; }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            modelBuilder.Entity<UserDAO>().HasKey(it => it.Guid);
+            modelBuilder.Entity<GroupDAO>().HasKey(it => it.Id);
+
+            modelBuilder.Entity<UserDAO>().Property(it => it.Guid).ValueGeneratedOnAdd();
+            modelBuilder.Entity<GroupDAO>().Property(it => it.Id).ValueGeneratedOnAdd();
+
+        }
+    }
+}

data/data.csproj

@@ -1,9 +1,18 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+	  <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.10"/>
+	  <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+		  <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+		  <PrivateAssets>all</PrivateAssets>
+	  </PackageReference>
+	  <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.10" />
+  </ItemGroup>
+
 </Project>