defmodule Localiser.Repo.Migrations.CreateSensors do
  use Ecto.Migration

  def change do
    create table(:sensors) do
      add :sensor_id, :string, null: false
      add :room_id, references(:rooms, on_delete: :nilify_all)
      add :x, :float
      add :y, :float

      timestamps(type: :utc_datetime)
    end

    create unique_index(:sensors, [:sensor_id])
    create index(:sensors, [:room_id])
  end
end