25 lines
910 B
TypeScript
25 lines
910 B
TypeScript
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import { toArray, unique } from '../../../prelude/array';
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import { IObject, isMention, IApMention } from '../type';
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import { resolvePerson } from './person';
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import * as promiseLimit from 'promise-limit';
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import Resolver from '../resolver';
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import { User } from '../../../models/entities/user';
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export async function extractApMentions(tags: IObject | IObject[] | null | undefined) {
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const hrefs = unique(extractApMentionObjects(tags).map(x => x.href as string));
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const resolver = new Resolver();
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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(() => 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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export function 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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