Sequel.migration do
  change do
    create_table(:encounters) do
      primary_key :id

      Integer :percentage
      TrueClass :static
      String :location, null: false, index: true

      foreign_key :pokemon_id, :pokemon, null: false, on_delete: :cascade
      foreign_key :version_id, :versions, null: false, on_delete: :cascade
    end

    alter_table(:hunts) do
      drop_column :pokemon_id
      add_foreign_key :enounter_id, :encounters
    end
  end
end