42 lines
1.4 KiB
TypeScript
42 lines
1.4 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
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import promiseLimit from 'promise-limit';
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import { DI } from '@/di-symbols.js';
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import type { User } from '@/models/index.js';
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import type { Config } from '@/config.js';
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import { toArray, unique } from '@/misc/prelude/array.js';
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import { bindThis } from '@/decorators.js';
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import { isMention } from '../type.js';
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import { ApResolverService, Resolver } from '../ApResolverService.js';
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import { ApPersonService } from './ApPersonService.js';
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import type { IObject, IApMention } from '../type.js';
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@Injectable()
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export class ApMentionService {
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constructor(
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@Inject(DI.config)
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private config: Config,
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private apResolverService: ApResolverService,
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private apPersonService: ApPersonService,
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) {
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}
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@bindThis
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public async extractApMentions(tags: IObject | IObject[] | null | undefined, resolver: Resolver) {
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const hrefs = unique(this.extractApMentionObjects(tags).map(x => x.href as string));
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const limit = promiseLimit<User | null>(2);
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const mentionedUsers = (await Promise.all(
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hrefs.map(x => limit(() => this.apPersonService.resolvePerson(x, resolver).catch(() => null))),
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)).filter((x): x is User => x != null);
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return mentionedUsers;
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}
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@bindThis
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public extractApMentionObjects(tags: IObject | IObject[] | null | undefined): IApMention[] {
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if (tags == null) return [];
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return toArray(tags).filter(isMention);
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}
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}
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