Sequel.migration do
  up do
    create_table(:members) do
      primary_key :id, type: :Bignum

      foreign_key :account_id, :accounts,
        type: :Bignum,
        null: false

      String :kind, null: false
      String :first_name
      String :last_name
      String :organization_name

      TrueClass :core_member, null: false, default: false

      index :account_id, unique: true

      constraint :members_kind_valid,
        Sequel.lit("kind IN ('individual', 'organization')")

      constraint :members_identity_matches_kind,
        Sequel.lit(
          "(kind = 'individual' AND first_name IS NOT NULL " \
          "AND trim(first_name) <> '' AND last_name IS NOT NULL " \
          "AND trim(last_name) <> '' AND organization_name IS NULL) " \
          "OR (kind = 'organization' AND first_name IS NULL " \
          "AND last_name IS NULL AND organization_name IS NOT NULL " \
          "AND trim(organization_name) <> '')"
        )

      constraint :members_core_member_individual,
        Sequel.lit("core_member = FALSE OR kind = 'individual'")
    end
  end

  down do
    drop_table(:members)
  end
end