118 lines
3.4 KiB
TypeScript
118 lines
3.4 KiB
TypeScript
import { queryClient } from '@/queries/client';
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import type { DataTag, InfiniteData, QueryKey } from '@tanstack/react-query';
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import type { PaginatedResponse } from 'pl-api';
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interface Entity {
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id: string;
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}
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const isEntity = <T = unknown>(object: T): object is T & Entity =>
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object && typeof object === 'object' && 'id' in object;
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/** Deduplicate an array of entities by their ID. */
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const deduplicateById = <T extends Entity>(entities: T[]): T[] => {
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const map = entities.reduce<Map<string, T>>(
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(result, entity) => result.set(entity.id, entity),
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new Map(),
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);
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return Array.from(map.values());
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};
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/** Flatten paginated results into a single array. */
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const flattenPages = <T>(queryData: InfiniteData<PaginatedResponse<T>> | undefined) => {
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const data = queryData?.pages.reduce<T[]>(
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(prev: T[], curr) => [...prev, ...((curr as any).result ?? (curr as any).items)],
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[],
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);
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if (data && data.every(isEntity)) {
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return deduplicateById(data);
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} else if (data) {
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return data;
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}
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};
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/** Traverse pages and update the item inside if found. */
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const updatePageItem = <T>(
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queryKey: QueryKey,
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newItem: T,
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isItem: (item: T, newItem: T) => boolean,
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) => {
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queryClient.setQueriesData<InfiniteData<PaginatedResponse<T>>>({ queryKey }, (data) => {
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if (data) {
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const pages = data.pages.map((page) => {
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const result = page.items.map((item) => (isItem(item, newItem) ? newItem : item));
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return { ...page, result };
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});
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return { ...data, pages };
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}
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});
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};
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/** Insert the new item at the beginning of the first page. */
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const appendPageItem = <T>(
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queryKey: DataTag<QueryKey, InfiniteData<PaginatedResponse<T>>>,
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newItem: T,
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) => {
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queryClient.setQueryData(queryKey, (data) => {
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if (data) {
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const pages = [...data.pages];
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pages[0] = { ...pages[0], items: [newItem, ...pages[0].items] };
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return { ...data, pages };
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}
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});
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};
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/** Remove an item inside if found. */
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const removePageItem = <T>(
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queryKey: QueryKey,
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itemToRemove: T,
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isItem: (item: T, newItem: T) => boolean,
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) => {
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queryClient.setQueriesData<InfiniteData<PaginatedResponse<T>>>({ queryKey }, (data) => {
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if (data) {
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const pages = data.pages.map((page) => {
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const items = page.items.filter((item) => !isItem(item, itemToRemove));
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return { ...page, items };
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});
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return { ...data, pages };
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}
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});
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};
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const paginateQueryData = <T>(array: T[] | undefined) =>
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array?.reduce((resultArray: any, item: any, index: any) => {
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const chunkIndex = Math.floor(index / 20);
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resultArray[chunkIndex] ??= [];
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resultArray[chunkIndex].push(item);
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return resultArray;
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}, []);
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const sortQueryData = <T>(
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queryKey: DataTag<QueryKey, InfiniteData<PaginatedResponse<T>>>,
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comparator: (a: T, b: T) => number,
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) => {
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queryClient.setQueryData(queryKey, (prevResult) => {
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if (prevResult) {
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const nextResult = { ...prevResult };
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const flattenedQueryData = flattenPages(nextResult);
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const sortedQueryData = flattenedQueryData?.toSorted(comparator);
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const paginatedPages = paginateQueryData(sortedQueryData);
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const newPages = paginatedPages.map((page: T, idx: number) => ({
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...prevResult.pages[idx],
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result: page,
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}));
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nextResult.pages = newPages;
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return nextResult;
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}
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});
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};
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export { flattenPages, updatePageItem, appendPageItem, removePageItem, sortQueryData };
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