PIbd-22-Ismailov_SUBD/BlogDataModels/BlogDatabaseImplement/Migrations/20230906180114_mig4.cs

using System;
using Microsoft.EntityFrameworkCore.Migrations;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;

#nullable disable

namespace BlogDatabase.Migrations
{
    /// <inheritdoc />
    public partial class mig4 : Migration
    {
        /// <inheritdoc />
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateTable(
                name: "Categories",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Name = table.Column<string>(type: "text", nullable: false),
                    UserId = table.Column<int>(type: "integer", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Categories", x => x.Id);
                });

            migrationBuilder.CreateTable(
                name: "Roles",
                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_Roles", x => x.Id);
                });

            migrationBuilder.CreateTable(
                name: "Topics",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Name = table.Column<string>(type: "text", nullable: false),
                    UserId = table.Column<int>(type: "integer", nullable: false),
                    CategoryId = table.Column<int>(type: "integer", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Topics", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Topics_Categories_CategoryId",
                        column: x => x.CategoryId,
                        principalTable: "Categories",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "Users",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Username = table.Column<string>(type: "text", nullable: false),
                    Email = table.Column<string>(type: "text", nullable: false),
                    Password = table.Column<string>(type: "text", nullable: false),
                    RegistrationDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
                    RoleId = table.Column<int>(type: "integer", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Users", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Users_Roles_RoleId",
                        column: x => x.RoleId,
                        principalTable: "Roles",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateTable(
                name: "Messages",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Text = table.Column<string>(type: "text", nullable: false),
                    Date = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
                    UserId = table.Column<int>(type: "integer", nullable: false),
                    TopicId = table.Column<int>(type: "integer", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Messages", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Messages_Topics_TopicId",
                        column: x => x.TopicId,
                        principalTable: "Topics",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_Messages_Users_UserId",
                        column: x => x.UserId,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateIndex(
                name: "IX_Messages_TopicId",
                table: "Messages",
                column: "TopicId");

            migrationBuilder.CreateIndex(
                name: "IX_Messages_UserId",
                table: "Messages",
                column: "UserId");

            migrationBuilder.CreateIndex(
                name: "IX_Topics_CategoryId",
                table: "Topics",
                column: "CategoryId");

            migrationBuilder.CreateIndex(
                name: "IX_Users_RoleId",
                table: "Users",
                column: "RoleId");
        }

        /// <inheritdoc />
        protected override void Down(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.DropTable(
                name: "Messages");

            migrationBuilder.DropTable(
                name: "Topics");

            migrationBuilder.DropTable(
                name: "Users");

            migrationBuilder.DropTable(
                name: "Categories");

            migrationBuilder.DropTable(
                name: "Roles");
        }
    }
}