( key: SelectorKey, args: SelectorHookArgs )
| 52 | const MAX_AUTO_DRAIN_PAGES = 50 |
| 53 | |
| 54 | export function useSelectorOptions( |
| 55 | key: SelectorKey, |
| 56 | args: SelectorHookArgs |
| 57 | ): SelectorOptionsResult { |
| 58 | const definition = getSelectorDefinition(key) |
| 59 | const queryArgs: SelectorQueryArgs = { |
| 60 | key, |
| 61 | context: args.context, |
| 62 | search: args.search, |
| 63 | } |
| 64 | const isEnabled = args.enabled ?? (definition.enabled ? definition.enabled(queryArgs) : true) |
| 65 | const supportsPagination = Boolean(definition.fetchPage) |
| 66 | |
| 67 | const flatQuery = useQuery<SelectorOption[]>({ |
| 68 | queryKey: definition.getQueryKey(queryArgs), |
| 69 | queryFn: ({ signal }) => |
| 70 | definition.fetchList?.({ ...queryArgs, signal }) ?? Promise.resolve([]), |
| 71 | enabled: !supportsPagination && isEnabled, |
| 72 | staleTime: definition.staleTime ?? 30_000, |
| 73 | }) |
| 74 | |
| 75 | const pagedQuery = useInfiniteQuery<SelectorPage>({ |
| 76 | queryKey: [...definition.getQueryKey(queryArgs), 'paged'], |
| 77 | queryFn: ({ pageParam, signal }) => { |
| 78 | if (!definition.fetchPage) return Promise.resolve(EMPTY_PAGE) |
| 79 | return definition.fetchPage({ |
| 80 | ...queryArgs, |
| 81 | cursor: pageParam as string | undefined, |
| 82 | signal, |
| 83 | }) |
| 84 | }, |
| 85 | getNextPageParam: (last) => last.nextCursor, |
| 86 | initialPageParam: undefined as string | undefined, |
| 87 | enabled: supportsPagination && isEnabled, |
| 88 | staleTime: definition.staleTime ?? 30_000, |
| 89 | }) |
| 90 | |
| 91 | const { hasNextPage, isFetchingNextPage, fetchNextPage, isError } = pagedQuery |
| 92 | const pageCount = pagedQuery.data?.pages.length ?? 0 |
| 93 | const reachedDrainCap = pageCount >= MAX_AUTO_DRAIN_PAGES |
| 94 | useEffect(() => { |
| 95 | if (!supportsPagination) return |
| 96 | if (isError) return |
| 97 | if (reachedDrainCap) { |
| 98 | if (hasNextPage) { |
| 99 | logger.warn('Selector hit auto-drain cap; option list is truncated', { |
| 100 | key, |
| 101 | pages: pageCount, |
| 102 | }) |
| 103 | } |
| 104 | return |
| 105 | } |
| 106 | if (hasNextPage && !isFetchingNextPage) { |
| 107 | void fetchNextPage() |
| 108 | } |
| 109 | }, [ |
| 110 | supportsPagination, |
| 111 | hasNextPage, |
no test coverage detected