/** 客户订单服务页路径解析：/o 与 /o/:orderNo。 */
export function isOrderServicePath(pathname: unknown): boolean {
  const segments = splitPathSegments(pathname)
  return segments[0] === 'o'
}

export function isLegacySupplementPath(pathname: unknown): boolean {
  return splitPathSegments(pathname)[0] === 'supplement'
}

export function resolveLegacySupplementOrderNo(pathname: unknown): string {
  const segments = splitPathSegments(pathname)
  if (segments.length !== 2 || segments[0] !== 'supplement') return ''
  return decodePathSegment(segments[1])
}

export function resolveOrderServiceOrderNo(pathname: unknown): string {
  const segments = splitPathSegments(pathname)
  if (segments.length !== 2 || segments[0] !== 'o') return ''
  return decodePathSegment(segments[1])
}

export function buildOrderServiceUrl(origin: unknown, orderNo: unknown): string {
  const base = String(origin ?? '')
    .trim()
    .replace(/\/+$/, '')
  const order = String(orderNo ?? '').trim()
  if (!base || !order) return ''
  return `${base}/o/${encodeURIComponent(order)}`
}

export function normalizeOrderServiceInput(value: unknown): string {
  const raw = String(value ?? '').trim()
  if (!raw) return ''
  for (const marker of ['/o/', '/supplement/']) {
    const index = raw.indexOf(marker)
    if (index < 0) continue
    return decodePathSegment(
      raw
        .slice(index + marker.length)
        .split(/[?#]/)[0]
        .replace(/\/+$/, '')
        .trim(),
    )
  }
  return raw
}

function splitPathSegments(pathname: unknown): string[] {
  const normalized = String(pathname ?? '').trim()
  if (!normalized.startsWith('/')) return []
  return normalized.split(/[?#]/)[0].replace(/\/+$/, '').split('/').filter(Boolean)
}

function decodePathSegment(segment: string): string {
  try {
    return decodeURIComponent(segment)
  } catch {
    return segment
  }
}