3 files changed, 281 insertions, 0 deletions
diff --git a/src/remote/activitypub/objects/image.ts b/src/remote/activitypub/objects/image.ts
new file mode 100644
index 0000000000..7f79fc5c06
--- /dev/null
+++ b/src/remote/activitypub/objects/image.ts
@@ -0,0 +1,29 @@
+import * as debug from 'debug';
+
+import uploadFromUrl from '../../../services/drive/upload-from-url';
+import { IRemoteUser } from '../../../models/user';
+import { IDriveFile } from '../../../models/drive-file';
+
+const log = debug('misskey:activitypub');
+
+/**
+ * Imageを作成します。
+ */
+export async function createImage(actor: IRemoteUser, image): Promise<IDriveFile> {
+	log(`Creating the Image: ${image.url}`);
+
+	return await uploadFromUrl(image.url, actor);
+}
+
+/**
+ * Imageを解決します。
+ *
+ * Misskeyに対象のImage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 resolveImage(actor: IRemoteUser, value: any): Promise<IDriveFile> {
+	// TODO
+
+	// リモートサーバーからフェッチしてきて登録
+	return await createImage(actor, value);
+}
diff --git a/src/remote/activitypub/objects/note.ts b/src/remote/activitypub/objects/note.ts
new file mode 100644
index 0000000000..3edcb8c63f
--- /dev/null
+++ b/src/remote/activitypub/objects/note.ts
@@ -0,0 +1,110 @@
+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);
+}
diff --git a/src/remote/activitypub/objects/person.ts b/src/remote/activitypub/objects/person.ts
new file mode 100644
index 0000000000..b1e8c9ee0a
--- /dev/null
+++ b/src/remote/activitypub/objects/person.ts
@@ -0,0 +1,142 @@
+import { JSDOM } from 'jsdom';
+import { toUnicode } from 'punycode';
+import * as debug from 'debug';
+
+import config from '../../../config';
+import User, { validateUsername, isValidName, isValidDescription, IUser, IRemoteUser } from '../../../models/user';
+import webFinger from '../../webfinger';
+import Resolver from '../resolver';
+import { resolveImage } from './image';
+import { isCollectionOrOrderedCollection, IObject, IPerson } from '../type';
+
+const log = debug('misskey:activitypub');
+
+/**
+ * Personをフェッチします。
+ *
+ * Misskeyに対象のPersonが登録されていればそれを返します。
+ */
+export async function fetchPerson(value: string | IObject, resolver?: Resolver): Promise<IUser> {
+	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 User.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 User.findOne({ uri });
+
+	if (exist) {
+		return exist;
+	}
+	//#endregion
+
+	return null;
+}
+
+/**
+ * Personを作成します。
+ */
+export async function createPerson(value: any, resolver?: Resolver): Promise<IUser> {
+	if (resolver == null) resolver = new Resolver();
+
+	const object = await resolver.resolve(value) as any;
+
+	if (
+		object == null ||
+		object.type !== 'Person' ||
+		typeof object.preferredUsername !== 'string' ||
+		!validateUsername(object.preferredUsername) ||
+		!isValidName(object.name == '' ? null : object.name) ||
+		!isValidDescription(object.summary)
+	) {
+		throw new Error('invalid person');
+	}
+
+	const person: IPerson = object;
+
+	log(`Creating the Person: ${person.id}`);
+
+	const [followersCount = 0, followingCount = 0, notesCount = 0, finger] = await Promise.all([
+		resolver.resolve(person.followers).then(
+			resolved => isCollectionOrOrderedCollection(resolved) ? resolved.totalItems : undefined,
+			() => undefined
+		),
+		resolver.resolve(person.following).then(
+			resolved => isCollectionOrOrderedCollection(resolved) ? resolved.totalItems : undefined,
+			() => undefined
+		),
+		resolver.resolve(person.outbox).then(
+			resolved => isCollectionOrOrderedCollection(resolved) ? resolved.totalItems : undefined,
+			() => undefined
+		),
+		webFinger(person.id)
+	]);
+
+	const host = toUnicode(finger.subject.replace(/^.*?@/, ''));
+	const hostLower = host.replace(/[A-Z]+/, matched => matched.toLowerCase());
+	const summaryDOM = JSDOM.fragment(person.summary);
+
+	// Create user
+	const user = await User.insert({
+		avatarId: null,
+		bannerId: null,
+		createdAt: Date.parse(person.published) || null,
+		description: summaryDOM.textContent,
+		followersCount,
+		followingCount,
+		notesCount,
+		name: person.name,
+		driveCapacity: 1024 * 1024 * 8, // 8MiB
+		username: person.preferredUsername,
+		usernameLower: person.preferredUsername.toLowerCase(),
+		host,
+		hostLower,
+		publicKey: {
+			id: person.publicKey.id,
+			publicKeyPem: person.publicKey.publicKeyPem
+		},
+		inbox: person.inbox,
+		uri: person.id
+	}) as IRemoteUser;
+
+	//#region アイコンとヘッダー画像をフェッチ
+	const [avatarId, bannerId] = (await Promise.all([
+		person.icon,
+		person.image
+	].map(img =>
+		img == null
+			? Promise.resolve(null)
+			: resolveImage(user, img.url)
+	))).map(file => file != null ? file._id : null);
+
+	User.update({ _id: user._id }, { $set: { avatarId, bannerId } });
+
+	user.avatarId = avatarId;
+	user.bannerId = bannerId;
+	//#endregion
+
+	return user;
+}
+
+/**
+ * Personを解決します。
+ *
+ * Misskeyに対象のPerson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 resolvePerson(value: string | IObject, verifier?: string): Promise<IUser> {
+	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 fetchPerson(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 createPerson(value);
+}