113 lines
2.9 KiB
TypeScript
113 lines
2.9 KiB
TypeScript
import React, {
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FC, memo, useEffect, useRef, useState,
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} from '../../lib/teact/teact';
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import { withGlobal } from '../../lib/teact/teactn';
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import { GlobalActions } from '../../global/types';
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import { pick } from '../../util/iteratees';
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import { throttle } from '../../util/schedulers';
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import { selectCurrentStickerSearch } from '../../modules/selectors';
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import { useIntersectionObserver } from '../../hooks/useIntersectionObserver';
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import useLang from '../../hooks/useLang';
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import Loading from '../ui/Loading';
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import StickerSetResult from './StickerSetResult';
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import './StickerSearch.scss';
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type StateProps = {
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query?: string;
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featuredIds?: string[];
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resultIds?: string[];
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};
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type DispatchProps = Pick<GlobalActions, 'loadFeaturedStickers'>;
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const INTERSECTION_THROTTLE = 200;
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const runThrottled = throttle((cb) => cb(), 60000, true);
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const StickerSearch: FC<StateProps & DispatchProps> = ({
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query,
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featuredIds,
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resultIds,
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loadFeaturedStickers,
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}) => {
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// eslint-disable-next-line no-null/no-null
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const containerRef = useRef<HTMLDivElement>(null);
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const lang = useLang();
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const [isModalOpen, setIsModalOpen] = useState(false);
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const {
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observe: observeIntersection,
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} = useIntersectionObserver({ rootRef: containerRef, throttleMs: INTERSECTION_THROTTLE });
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// Due to the parent Transition, this component never gets unmounted,
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// that's why we use throttled API call on every update.
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useEffect(() => {
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runThrottled(() => {
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loadFeaturedStickers();
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});
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});
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function renderContent() {
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if (query === undefined) {
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return undefined;
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}
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if (!query && featuredIds) {
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return featuredIds.map((id) => (
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<StickerSetResult
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key={id}
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stickerSetId={id}
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observeIntersection={observeIntersection}
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isSomeModalOpen={isModalOpen}
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onModalToggle={setIsModalOpen}
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/>
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));
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}
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if (resultIds) {
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if (!resultIds.length) {
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return <p className="helper-text" dir="auto">Nothing found.</p>;
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}
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return resultIds.map((id) => (
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<StickerSetResult
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key={id}
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stickerSetId={id}
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observeIntersection={observeIntersection}
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isSomeModalOpen={isModalOpen}
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onModalToggle={setIsModalOpen}
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/>
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));
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}
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return <Loading />;
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}
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return (
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<div ref={containerRef} className="StickerSearch custom-scroll" dir={lang.isRtl ? 'rtl' : undefined}>
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{renderContent()}
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</div>
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);
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};
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export default memo(withGlobal(
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(global): StateProps => {
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const currentSearch = selectCurrentStickerSearch(global);
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const { query, resultIds } = currentSearch || {};
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const { featured } = global.stickers;
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return {
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query,
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featuredIds: featured.setIds,
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resultIds,
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};
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},
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(setGlobal, actions): DispatchProps => pick(actions, ['loadFeaturedStickers']),
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)(StickerSearch));
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