import { useMemo } from "react"

type Item = {
  id: string
}

export const useCheckboxChecked = (
  allItems: Item[],
  selectedItems: Map<string, Item>,
) => {
  const getChecked = useMemo<boolean | "indeterminate">(() => {
    if (selectedItems.size === 0) {
      return false
    }

    const isEverythingSelected = allItems.every(item =>
      selectedItems.has(item.id),
    )

    if (isEverythingSelected) {
      return true
    }

    return "indeterminate"
  }, [allItems, selectedItems])

  return getChecked
}