alphadex/db/migrations/002_pinboard_archive.rb

pinboard_export = File.expand_path(ENV.fetch("PINBOARD_EXPORT"))

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

      String :json, text: true, null: false

      DateTime :created_at, null: false
      DateTime :modified_at, null: false
    end

    File.foreach(pinboard_export).with_index do |line, i|
      created_at = modified_at = DateTime.now
      json = line.chomp

      entity_id = DB[:entities].insert(created_at:, modified_at:)
      DB[:pinboard].insert(entity_id:, json: , created_at:, modified_at:)
    end
  end
end