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-rw-r--r--src/remote/activitypub/objects/note.ts110
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diff --git a/src/remote/activitypub/objects/note.ts b/src/remote/activitypub/objects/note.ts
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+++ b/src/remote/activitypub/objects/note.ts
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+import { JSDOM } from 'jsdom';
+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';
+import { resolvePerson } from './person';
+import { resolveImage } from './image';
+import { IRemoteUser } from '../../../models/user';
+
+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 + '/')) {
+ return await Note.findOne({ _id: uri.split('/').pop() });
+ }
+
+ //#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') {
+ throw new Error('invalid note');
+ }
+
+ 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;
+
+ //#region Visibility
+ let visibility = 'public';
+ if (!note.to.includes('https://www.w3.org/ns/activitystreams#Public')) visibility = 'unlisted';
+ if (note.cc.length == 0) visibility = 'private';
+ // TODO
+ if (visibility != 'public') throw new Error('unspported visibility');
+ //#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
+ const media = note.attachment
+ ? await Promise.all(note.attachment.map(x => resolveImage(actor, x)))
+ : [];
+
+ // リプライ
+ const reply = note.inReplyTo ? await resolveNote(note.inReplyTo, resolver) : null;
+
+ const { window } = new JSDOM(note.content);
+
+ return await post(actor, {
+ createdAt: new Date(note.published),
+ media,
+ reply,
+ renote: undefined,
+ text: window.document.body.textContent,
+ viaMobile: false,
+ geo: undefined,
+ visibility,
+ 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、そうでなければ
+ * リモートサーバーからフェッチして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);
+}