Arie/serveme

# frozen_string_literal: true

class ReservationManager
  attr_reader :reservation

  delegate :server, to: :reservation, prefix: false

  def initialize(reservation)
    @reservation = reservation
  end

  def start_reservation
    if previous_reservation_ended_fully?
      reservation.reservation_statuses.create!(status: 'Starting')
      manage_reservation(:start)
    else
      reservation.update_attribute(:start_instantly, false)
      reservation.reservation_statuses.create!(status: 'Waiting for other reservation on server to end fully')
    end
  end

  def end_reservation
    return if reservation.ended? || reservation.status == 'Ending'

    reservation.reservation_statuses.create!(status: 'Ending')
    manage_reservation(:end)
  end

  def update_reservation
    manage_reservation(:update)
  end

  def manage_reservation(action)
    ReservationWorker.perform_async(reservation.id, action.to_s)
  end

  private

  def previous_reservation_ended_fully?
    Reservation.where.not(id: reservation.id).where(server_id: reservation.server_id, ended: false).where('reservations.starts_at < ? and reservations.ends_at > ?', Time.current, 15.minutes.ago).none?
  end
end