export type LeaderTreeNode = {
  title?: string
  value?: string | number
  children?: LeaderTreeNode[]
}

export function flattenLeaderTree(
  nodes: LeaderTreeNode[],
  prefixTitle: string[] = []
): Array<{ label: string; value: string }> {
  const result: Array<{ label: string; value: string }> = []

  nodes.forEach((node) => {
    const title = node.title ?? ""
    const nextPrefix = title ? [...prefixTitle, title] : prefixTitle
    const children = node.children ?? []
    const valueRaw = node.value

    if (children.length > 0) {
      result.push(...flattenLeaderTree(children, nextPrefix))
      return
    }

    if (valueRaw === undefined || valueRaw === null) return
    if (typeof valueRaw === "string" && valueRaw.includes("-")) return

    result.push({
      label: nextPrefix.join(" / "),
      value: String(valueRaw),
    })
  })

  return result
}

export function toNumberArray(values?: string[]) {
  if (!values || values.length === 0) return undefined
  const numbers = values.map((v) => Number(v)).filter((v) => Number.isFinite(v))
  return numbers.length > 0 ? numbers : undefined
}

export function weekDayText(day: number) {
  const list = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"]
  return list[day] ?? "-"
}