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

#nullable disable

namespace MeterVault.Infrastructure.Persistence.Migrations
{
    /// <inheritdoc />
    public partial class AddMeterLinks : Migration
    {
        /// <inheritdoc />
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateTable(
                name: "meter_link",
                columns: table => new
                {
                    id = table.Column<int>(type: "integer", nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    from_meter_id = table.Column<int>(type: "integer", nullable: false),
                    to_meter_id = table.Column<int>(type: "integer", nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("pk_meter_link", x => x.id);
                    table.CheckConstraint("ck_meter_link_distinct", "from_meter_id <> to_meter_id");
                    table.ForeignKey(
                        name: "fk_meter_link_meter_from_meter_id",
                        column: x => x.from_meter_id,
                        principalTable: "meter",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "fk_meter_link_meter_to_meter_id",
                        column: x => x.to_meter_id,
                        principalTable: "meter",
                        principalColumn: "id",
                        onDelete: ReferentialAction.Cascade);
                });

            migrationBuilder.CreateIndex(
                name: "ix_meter_link_from_meter_id_to_meter_id",
                table: "meter_link",
                columns: new[] { "from_meter_id", "to_meter_id" },
                unique: true);

            migrationBuilder.CreateIndex(
                name: "ix_meter_link_to_meter_id",
                table: "meter_link",
                column: "to_meter_id");
        }

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