BathHacked/energy-sparks

class EnergyTariffDefaultPricesCreator
  def initialize(energy_tariff)
    @energy_tariff = energy_tariff
  end

  def process
    return if @energy_tariff.flat_rate?
    return if @energy_tariff.energy_tariff_prices.any?

    night_times = if @energy_tariff.tariff_holder.school? && @energy_tariff.meters.any?
                    Meters::Economy7Times.times(@energy_tariff&.meters&.first&.mpan_mprn)
                  else
                    Meters::Economy7Times::DEFAULT_TIMES
                  end

    day_times = night_times.last..night_times.first

    @energy_tariff.energy_tariff_prices.create!(energy_tariff_price_defaults(night_times.first.to_s, night_times.last.to_s))
    @energy_tariff.energy_tariff_prices.create!(energy_tariff_price_defaults(day_times.first.to_s, day_times.last.to_s))
  end

  def energy_tariff_price_defaults(start_time, end_time)
    {
      start_time: start_time,
      end_time: end_time,
      units: 'kwh'
    }
  end
end