69 lines
No EOL
1.7 KiB
TypeScript
69 lines
No EOL
1.7 KiB
TypeScript
import { useEffect } from 'react';
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import { z } from 'zod';
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import { useAppDispatch, useAppSelector, useLoading } from 'soapbox/hooks';
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import { type RootState } from 'soapbox/store';
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import { importEntities } from '../actions';
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import { Entity } from '../types';
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import { EntityFn } from './types';
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import { type UseEntityOpts } from './useEntity';
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/** Entities will be filtered through this function until it returns true. */
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type LookupFn<TEntity extends Entity> = (entity: TEntity) => boolean
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function useEntityLookup<TEntity extends Entity>(
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entityType: string,
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lookupFn: LookupFn<TEntity>,
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entityFn: EntityFn<void>,
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opts: UseEntityOpts<TEntity> = {},
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) {
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const { schema = z.custom<TEntity>() } = opts;
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const dispatch = useAppDispatch();
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const [isFetching, setPromise] = useLoading(true);
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const entity = useAppSelector(state => findEntity(state, entityType, lookupFn));
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const isEnabled = opts.enabled ?? true;
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const isLoading = isFetching && !entity;
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const fetchEntity = async () => {
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try {
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const response = await setPromise(entityFn());
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const entity = schema.parse(response.data);
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dispatch(importEntities([entity], entityType));
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} catch (e) {
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// do nothing
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}
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};
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useEffect(() => {
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if (!isEnabled) return;
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if (!entity || opts.refetch) {
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fetchEntity();
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}
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}, [isEnabled]);
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return {
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entity,
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fetchEntity,
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isFetching,
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isLoading,
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};
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}
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function findEntity<TEntity extends Entity>(
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state: RootState,
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entityType: string,
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lookupFn: LookupFn<TEntity>,
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) {
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const cache = state.entities[entityType];
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if (cache) {
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return (Object.values(cache.store) as TEntity[]).find(lookupFn);
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}
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}
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export { useEntityLookup }; |