104 lines
3.7 KiB
TypeScript
104 lines
3.7 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import type {ICacheService} from '~/infrastructure/ICacheService';
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import {Logger} from '~/Logger';
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import * as FetchUtils from '~/utils/FetchUtils';
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import type {ActivityPubPost, MastodonInstance, MastodonPost} from './ActivityPubTypes';
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export class ActivityPubFetcher {
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constructor(private cacheService: ICacheService) {}
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async fetchInstanceInfo(baseUrl: string): Promise<MastodonInstance | null> {
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const cacheKey = `activitypub:instance:${baseUrl}`;
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const cached = await this.cacheService.get<MastodonInstance>(cacheKey);
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if (cached) return cached;
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try {
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const apiUrl = `${baseUrl}/api/v2/instance`;
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Logger.debug({apiUrl}, 'Fetching instance info');
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const response = await FetchUtils.sendRequest({
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url: apiUrl,
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method: 'GET',
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timeout: 5000,
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headers: {Accept: 'application/json'},
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});
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if (response.status !== 200) {
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Logger.debug({apiUrl, status: response.status}, 'Instance info request failed');
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return null;
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}
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const data = await FetchUtils.streamToString(response.stream);
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const instanceInfo = JSON.parse(data) as MastodonInstance;
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await this.cacheService.set(cacheKey, JSON.stringify(instanceInfo), 3600);
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return instanceInfo;
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} catch (error) {
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Logger.error({error, baseUrl}, 'Failed to fetch instance info');
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return null;
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}
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}
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async tryFetchActivityPubData(url: string): Promise<ActivityPubPost | null> {
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try {
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const response = await FetchUtils.sendRequest({
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url,
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method: 'GET',
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timeout: 5000,
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headers: {
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Accept: 'application/activity+json, application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
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},
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});
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if (response.status !== 200) {
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Logger.debug({url, status: response.status}, 'Failed to fetch ActivityPub data');
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return null;
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}
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const data = await FetchUtils.streamToString(response.stream);
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const parsedData = JSON.parse(data);
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if (!parsedData || typeof parsedData !== 'object' || !('id' in parsedData) || !('type' in parsedData)) {
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Logger.debug({url}, 'Response is not a valid ActivityPub object');
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return null;
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}
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return parsedData as ActivityPubPost;
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} catch (error) {
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Logger.error({error, url}, 'Failed to fetch or parse ActivityPub data');
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return null;
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}
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}
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async tryFetchMastodonApi(baseUrl: string, postId: string): Promise<MastodonPost | null> {
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try {
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const apiUrl = `${baseUrl}/api/v1/statuses/${postId}`;
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Logger.debug({apiUrl}, 'Attempting to fetch from Mastodon API');
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const response = await FetchUtils.sendRequest({
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url: apiUrl,
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method: 'GET',
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timeout: 5000,
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headers: {Accept: 'application/json'},
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});
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if (response.status !== 200) {
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Logger.debug({apiUrl, status: response.status}, 'Mastodon API request failed');
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return null;
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}
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const data = await FetchUtils.streamToString(response.stream);
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return JSON.parse(data) as MastodonPost;
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} catch (error) {
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Logger.error({error, baseUrl, postId}, 'Failed to fetch or parse Mastodon API data');
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return null;
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}
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}
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}
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