Send notification based on platform

notification.rb

def send_notification
  fcm = FCM.new(ENV['FIREBASE_SERVER_KEY'], { mutable_content: true, content_available: true, priority: 'high' })
  registration_ids = [event_slot.physiotherapist.firebase_token]
  date = I18n.l(event_slot.appointment_time, format: :short)

  payload = { data: { title: 'Você tem um novo agendamento', body: "Confirme sua disponibilidade para atender na #{franchise.nome}, #{date}" }, mutable_content: true, content_available: true, priority: 'high' }

  if (event_slot.physiotherapist.platform == 'ios')
    payload[:notification] = payload[:data]
  end

  fcm.send(registration_ids, payload)
end