Sequel.migration do
  up do
    create_table(:titles) do
      foreign_key :entity_id, :entities, null: false, unique: true

      String :title

      DateTime :created_at, null: false
      DateTime :updated_at
    end

    json = Sequel.sqlite_json_op(:json)
    description = json.extract("$.description")
    extended = json.extract("$.extended")

    DB[:pinboard]
      .select_append(description.as(:description), extended.as(:extended))
      .each do |pin|
        entity_id = pin.fetch(:entity_id)
        title = pin.fetch(:description)
        text = pin.fetch(:extended)
        created_at = updated_at = DateTime.now

        DB[:titles].insert(entity_id:, title:, created_at:, updated_at:)
        DB[:notes].insert(entity_id:, text:, created_at:, updated_at:)
      end
  end

  down do
    drop_table(:titles)
  end
end