# frozen_string_literal: true

# Provides an helper method to create the slots for an Availability and optionnaly, for its multiple occurrences
class Availabilities::CreateAvailabilitiesService
  def create(availability, occurrences)
    occurrences = [] if occurrences.nil?

    availability.update(occurrence_id: availability.id)
    create_slots(availability)

    occurrences.each do |o|
      start_at = Time.zone.parse(o[:start_at])
      end_at = Time.zone.parse(o[:end_at])

      next if availability.start_at == start_at && availability.end_at == end_at

      occ = Availability.create!(
        start_at: start_at,
        end_at: end_at,
        available_type: availability.available_type,
        is_recurrent: availability.is_recurrent,
        period: availability.period,
        nb_periods: availability.nb_periods,
        end_date: availability.end_date,
        occurrence_id: availability.occurrence_id,
        machine_ids: availability.machine_ids,
        training_ids: availability.training_ids,
        space_ids: availability.space_ids,
        tag_ids: availability.tag_ids,
        nb_total_places: availability.nb_total_places,
        slot_duration: availability.slot_duration,
        plan_ids: availability.plan_ids
      )
      create_slots(occ)
    end
  end

  def create_slots(availability)
    slot_duration = availability.slot_duration || Setting.get('slot_duration').to_i

    if %w[machines space].include?(availability.available_type)
      ((availability.end_at - availability.start_at) / slot_duration.minutes).to_i.times do |i|
        Slot.new(
          start_at: availability.start_at + (i * slot_duration).minutes,
          end_at: availability.start_at + (i * slot_duration).minutes + slot_duration.minutes,
          availability_id: availability.id
        ).save!
      end
    else
      Slot.new(
        start_at: availability.start_at,
        end_at: availability.end_at,
        availability_id: availability.id
      ).save!
    end
  end
end