32 lines
1003 B
TypeScript
32 lines
1003 B
TypeScript
// Copyright 2017-2024 @polkadot/react-hooks authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import { useCallback, useMemo, useState } from 'react';
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import { createNamedHook } from './createNamedHook.js';
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import { useCacheKey } from './useCacheKey.js';
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// hook for favorites with local storage
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function useFavoritesImpl (storageKeyBase: string): [string[], (address: string) => void] {
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const [getCache, setCache] = useCacheKey<string[]>(storageKeyBase);
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const [favorites, setFavorites] = useState<string[]>(() => getCache() || []);
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const toggleFavorite = useCallback(
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(address: string): void => setFavorites(
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(favorites) => setCache(
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favorites.includes(address)
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? favorites.filter((a) => address !== a)
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: [...favorites, address]
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)
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),
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[setCache]
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);
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return useMemo(
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() => [favorites, toggleFavorite],
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[favorites, toggleFavorite]
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);
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}
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export const useFavorites = createNamedHook('useFavorites', useFavoritesImpl);
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