type PriceSource = {
  price?: number | null
  pricePercent?: number | null
  priceRange?: string | null
}

export function calculatePrice(source: PriceSource, base: number): number {
  if (source.price != null) return source.price
  if (source.pricePercent != null) return base * (source.pricePercent / 100)
  if (source.priceRange) {
    const parts = source.priceRange.split("–").map(Number)
    const max = Math.max(...parts)
    return Number.isNaN(max) ? 0 : max
  }
  return 0
}

export function calculatePriceRange(
  baseSource: PriceSource | undefined,
  extras: PriceSource[]
): [number, number] {
  if (!baseSource) return [0, 0]

  const base = calculatePrice(baseSource, 0)

  let minExtra = 0
  let maxExtra = 0

  for (const extra of extras) {
    if (extra.price != null) {
      minExtra += extra.price
      maxExtra += extra.price
    } else if (extra.pricePercent != null) {
      const val = base * (extra.pricePercent / 100)
      minExtra += val
      maxExtra += val
    } else if (extra.priceRange) {
      const [minStr, maxStr] = extra.priceRange.split("–")
      const min = Number(minStr)
      const max = Number(maxStr)

      if (!Number.isNaN(min)) minExtra += min
      if (!Number.isNaN(max)) maxExtra += max
    }
  }

  return [base + minExtra, base + maxExtra]
}