ash_admin/dev/repo/migrations/20201206012255_migrate_resources1.exs

defmodule Demo.Repo.Migrations.MigrateResources1 do
  @moduledoc """
  Updates resources based on their most recent snapshots.

  This file was autogenerated with `mix ash_postgres.generate_migrations`
  """

  use Ecto.Migration

  def up() do
    create table(:users, primary_key: false) do
      add(:id, :binary_id, null: true, default: nil, primary_key: true)
      add(:representative, :boolean, null: true, default: nil, primary_key: false)
      add(:last_name, :text, null: true, default: nil, primary_key: false)
      add(:first_name, :text, null: true, default: nil, primary_key: false)
    end

    create(
      unique_index(:users, [:first_name, :last_name],
        name: "users_representative_name_unique_index",
        where: "representative = true"
      )
    )

    alter table(:users) do
      add(:admin, :boolean, null: false, default: false, primary_key: false)
    end

    create table(:tickets, primary_key: false) do
      add(:id, :binary_id, null: true, default: nil, primary_key: true)
      add(:subject, :text, null: false, default: nil, primary_key: false)
      add(:status, :text, null: false, default: nil, primary_key: false)
      add(:response, :text, null: true, default: nil, primary_key: false)

      add(:representative_id, references("users", type: :binary_id, column: :id),
        default: nil,
        primary_key: false
      )

      add(:reporter_id, references("users", type: :binary_id, column: :id),
        default: nil,
        primary_key: false
      )

      add(:description, :text, null: true, default: nil, primary_key: false)
    end
  end

  def down() do
    drop(table("tickets"))

    alter table(:users) do
      remove(:admin)
    end

    drop_if_exists(
      unique_index(:users, [:first_name, :last_name],
        name: "users_representative_name_unique_index"
      )
    )

    drop(table("users"))
  end
end