FoundKey/src/remote/activitypub/models/note.ts

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import * as mongo from 'mongodb';
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import * as debug from 'debug';
import config from '../../../config';
import Resolver from '../resolver';
import Note, { INote } from '../../../models/note';
import post from '../../../services/note/create';
import { INote as INoteActivityStreamsObject, IObject } from '../type';
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import { resolvePerson, updatePerson } from './person';
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import { resolveImage } from './image';
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import { IRemoteUser, IUser } from '../../../models/user';
import htmlToMFM from '../../../mfm/html-to-mfm';
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const log = debug('misskey:activitypub');
/**
* Noteをフェッチします
*
* Misskeyに対象のNoteが登録されていればそれを返します
*/
export async function fetchNote(value: string | IObject, resolver?: Resolver): Promise<INote> {
const uri = typeof value == 'string' ? value : value.id;
// URIがこのサーバーを指しているならデータベースからフェッチ
if (uri.startsWith(config.url + '/')) {
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const id = new mongo.ObjectID(uri.split('/').pop());
return await Note.findOne({ _id: id });
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}
//#region このサーバーに既に登録されていたらそれを返す
const exist = await Note.findOne({ uri });
if (exist) {
return exist;
}
//#endregion
return null;
}
/**
* Noteを作成します
*/
export async function createNote(value: any, resolver?: Resolver, silent = false): Promise<INote> {
if (resolver == null) resolver = new Resolver();
const object = await resolver.resolve(value) as any;
if (object == null || object.type !== 'Note') {
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log(`invalid note: ${object}`);
return null;
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}
const note: INoteActivityStreamsObject = object;
log(`Creating the Note: ${note.id}`);
// 投稿者をフェッチ
const actor = await resolvePerson(note.attributedTo) as IRemoteUser;
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// 投稿者が凍結されていたらスキップ
if (actor.isSuspended) {
return null;
}
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//#region Visibility
let visibility = 'public';
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let visibleUsers: IUser[] = [];
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if (!note.to.includes('https://www.w3.org/ns/activitystreams#Public')) {
if (note.cc.includes('https://www.w3.org/ns/activitystreams#Public')) {
visibility = 'home';
} else if (note.to.includes(`${actor.uri}/followers`)) { // TODO: person.followerと照合するべき
visibility = 'followers';
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} else {
visibility = 'specified';
visibleUsers = await Promise.all(note.to.map(uri => resolvePerson(uri)));
}
}
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//#endergion
// 添付メディア
// TODO: attachmentは必ずしもImageではない
// TODO: attachmentは必ずしも配列ではない
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// Noteがsensitiveなら添付もsensitiveにする
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const media = note.attachment
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.map(attach => attach.sensitive = note.sensitive)
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? await Promise.all(note.attachment.map(x => resolveImage(actor, x)))
: [];
// リプライ
const reply = note.inReplyTo ? await resolveNote(note.inReplyTo, resolver) : null;
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// テキストのパース
const text = htmlToMFM(note.content);
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// ユーザーの情報が古かったらついでに更新しておく
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if (actor.updatedAt == null || Date.now() - actor.updatedAt.getTime() > 1000 * 60 * 60 * 24) {
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updatePerson(note.attributedTo);
}
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return await post(actor, {
createdAt: new Date(note.published),
media,
reply,
renote: undefined,
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cw: note.summary,
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text: text,
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viaMobile: false,
geo: undefined,
visibility,
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visibleUsers,
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uri: note.id
}, silent);
}
/**
* Noteを解決します
*
* Misskeyに対象のNoteが登録されていればそれを返し
* Misskeyに登録しそれを返します
*/
export async function resolveNote(value: string | IObject, resolver?: Resolver): Promise<INote> {
const uri = typeof value == 'string' ? value : value.id;
//#region このサーバーに既に登録されていたらそれを返す
const exist = await fetchNote(uri);
if (exist) {
return exist;
}
//#endregion
// リモートサーバーからフェッチしてきて登録
return await createNote(value, resolver);
}