90 lines
2.6 KiB
TypeScript
90 lines
2.6 KiB
TypeScript
// Copyright 2020-2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import Fuse from 'fuse.js';
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import { get } from 'lodash';
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import type { ConversationType } from '../state/ducks/conversations';
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import { filter, map } from '../util/iterables';
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const FUSE_OPTIONS = {
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location: 0,
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shouldSort: true,
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threshold: 0,
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maxPatternLength: 32,
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minMatchCharLength: 1,
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keys: ['name', 'firstName', 'profileName', 'title'],
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getFn(
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conversation: Readonly<ConversationType>,
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path: string | Array<string>
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): ReadonlyArray<string> | string {
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// It'd be nice to avoid this cast, but Fuse's types don't allow it.
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const rawValue = get(conversation as Record<string, unknown>, path);
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if (typeof rawValue !== 'string') {
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// It might make more sense to return `undefined` here, but [Fuse's types don't
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// allow it in newer versions][0] so we just return the empty string.
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//
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// [0]: https://github.com/krisk/Fuse/blob/e5e3abb44e004662c98750d0964d2d9a73b87848/src/index.d.ts#L117
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return '';
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}
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const segmenter = new Intl.Segmenter(undefined, { granularity: 'word' });
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const segments = segmenter.segment(rawValue);
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const wordlikeSegments = filter(segments, segment => segment.isWordLike);
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const wordlikes = map(wordlikeSegments, segment => segment.segment);
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return Array.from(wordlikes);
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},
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};
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export class MemberRepository {
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private isFuseReady = false;
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private fuse: Fuse<ConversationType> = new Fuse<ConversationType>(
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[],
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FUSE_OPTIONS
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);
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constructor(private members: Array<ConversationType> = []) {}
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updateMembers(members: Array<ConversationType>): void {
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this.members = members;
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this.isFuseReady = false;
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}
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getMembers(omit?: ConversationType): Array<ConversationType> {
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if (omit) {
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return this.members.filter(({ id }) => id !== omit.id);
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}
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return this.members;
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}
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getMemberById(id?: string): ConversationType | undefined {
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return id
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? this.members.find(({ id: memberId }) => memberId === id)
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: undefined;
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}
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getMemberByUuid(uuid?: string): ConversationType | undefined {
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return uuid
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? this.members.find(({ uuid: memberUuid }) => memberUuid === uuid)
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: undefined;
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}
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search(pattern: string, omit?: ConversationType): Array<ConversationType> {
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if (!this.isFuseReady) {
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this.fuse.setCollection(this.members);
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this.isFuseReady = true;
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}
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const results = this.fuse.search(pattern).map(result => result.item);
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if (omit) {
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return results.filter(({ id }) => id !== omit.id);
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}
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return results;
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}
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}
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