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import { DEFAULT_PAGE_TITLE } from "@/shared/constants";
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import type { PageTreeIndex } from "@/client/lib/page-tree-model";
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export function getActiveDescendantIds(index: Pick<PageTreeIndex, "childrenByParent">, pageId: string): string[] {
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  const result: string[] = [];
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  const stack = [...(index.childrenByParent.get(pageId) ?? [])].reverse();
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  while (stack.length > 0) {
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    const page = stack.pop()!;
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    result.push(page.id);
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    const children = index.childrenByParent.get(page.id);
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    if (children) {
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      for (let i = children.length - 1; i >= 0; i -= 1) {
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        stack.push(children[i]);
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      }
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    }
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  }
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  return result;
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}
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export function getArchivePageConfirmMessage(title: string | null | undefined, descendantCount: number): string {
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  const pageTitle = title || DEFAULT_PAGE_TITLE;
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  if (descendantCount === 1) {
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    return `"${pageTitle}" and 1 subpage will be archived.`;
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  }
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  if (descendantCount > 1) {
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    return `"${pageTitle}" and ${descendantCount} subpages will be archived.`;
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  }
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  return `"${pageTitle}" will be archived.`;
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}
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export function shouldNavigateAwayAfterArchive(
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  currentPageId: string | null | undefined,
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  archivedPageIds: readonly string[],
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): boolean {
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  return !!currentPageId && archivedPageIds.includes(currentPageId);
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}