Plataforma de Reserva de Pádel

// Antes: Sin awareness de duración variable
const isAvailable = (courtId, startTime) => {
  // Solo verifica hora exacta, no overlaps
  return !db.getReservation(courtId, startTime)
}

async function validateConflict(courtId, date, startTime, duration) {
  const config = await getCourtConfig(courtId)
  if (!config.allowedDurations.includes(duration))
    throw new ValidationError('Duration not allowed')

  const dayReservations = await db.getReservationsByCourtAndDate(courtId, date)
  const endTime = addMinutes(startTime, duration)

  const hasConflict = dayReservations.some(r =>
    startTime < addMinutes(r.startTime, r.duration) && endTime > r.startTime
  )

  return { valid: !hasConflict, endTime }
}