service.ex

  def update_company(company, company_params) do
    changeset = Company.changeset(company, company_params)
    if Ecto.Changeset.fetch_change(changeset, :shortname) != :error do
      Logger.debug "Shortname changed"
      #TODO dont allow shortname change if shortname is in use in video addresses
      :ok
    end

    Repo.transaction( fn ->
      case Repo.update(changeset) do
       {:ok, company} ->
        if Ecto.Changeset.fetch_change(changeset, :name) != :error or Ecto.Changeset.fetch_change(changeset, :country) != :error do
          Logger.debug "Pushing seevia changes"
          case seevia_api.update_company(company) do
            {:ok, _ } ->
              company
            {:error, reason } ->
              Logger.error "Seevia API write failed for company.id #{company.id}, reason: #{reason}"
              Repo.rollback("Seevia api write failed")
          end
        else
          company
        end
      {:error, changeset} ->
        Repo.rollback(changeset)
      end
    end)
  end