source: resTools_backend/backend/Migrations/20220409103618_Initial-Architecture.cs

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

#nullable disable

namespace backend.Migrations
{
    public partial class InitialArchitecture : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            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),
                    Password = table.Column<string>(type: "text", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Users", x => x.Id);
                });

            migrationBuilder.CreateTable(
                name: "Restoraunts",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    OwnerFk = table.Column<int>(type: "integer", nullable: true),
                    Name = table.Column<string>(type: "text", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Restoraunts", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Restoraunts_Users_OwnerFk",
                        column: x => x.OwnerFk,
                        principalTable: "Users",
                        principalColumn: "Id");
                });

            migrationBuilder.CreateTable(
                name: "Reservations",
                columns: table => new
                {
                    Id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    StartDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
                    RestaurantId = table.Column<int>(type: "integer", nullable: false),
                    ReservationPlace = table.Column<int>(type: "integer", nullable: false),
                    ReservationStatus = table.Column<int>(type: "integer", nullable: false),
                    ReservationType = table.Column<int>(type: "integer", nullable: false),
                    ContactName = table.Column<string>(type: "text", nullable: false),
                    ContactNumber = table.Column<string>(type: "text", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Reservations", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Reservations_Restoraunts_RestaurantId",
                        column: x => x.RestaurantId,
                        principalTable: "Restoraunts",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateIndex(
                name: "IX_Reservations_RestaurantId",
                table: "Reservations",
                column: "RestaurantId");

            migrationBuilder.CreateIndex(
                name: "IX_Restoraunts_OwnerFk",
                table: "Restoraunts",
                column: "OwnerFk",
                unique: true);
        }

        protected override void Down(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.DropTable(
                name: "Reservations");

            migrationBuilder.DropTable(
                name: "Restoraunts");

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