3 files changed, 151 insertions, 0 deletions
diff --git a/src/remote/activitypub/act/create/image.ts b/src/remote/activitypub/act/create/image.ts
new file mode 100644
index 0000000000..30a75e7377
--- /dev/null
+++ b/src/remote/activitypub/act/create/image.ts
@@ -0,0 +1,18 @@
+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');
+
+export default async function(actor: IRemoteUser, image): Promise<IDriveFile> {
+	if ('attributedTo' in image && actor.account.uri !== image.attributedTo) {
+		log(`invalid image: ${JSON.stringify(image, null, 2)}`);
+		throw new Error('invalid image');
+	}
+
+	log(`Creating the Image: ${image.id}`);
+
+	return await uploadFromUrl(image.url, actor);
+}
diff --git a/src/remote/activitypub/act/create/index.ts b/src/remote/activitypub/act/create/index.ts
new file mode 100644
index 0000000000..dd0b112141
--- /dev/null
+++ b/src/remote/activitypub/act/create/index.ts
@@ -0,0 +1,44 @@
+import * as debug from 'debug';
+
+import Resolver from '../../resolver';
+import { IRemoteUser } from '../../../../models/user';
+import createNote from './note';
+import createImage from './image';
+import { ICreate } from '../../type';
+
+const log = debug('misskey:activitypub');
+
+export default async (actor: IRemoteUser, activity: ICreate): Promise<void> => {
+	if ('actor' in activity && actor.account.uri !== activity.actor) {
+		throw new Error('invalid actor');
+	}
+
+	const uri = activity.id || activity;
+
+	log(`Create: ${uri}`);
+
+	const resolver = new Resolver();
+
+	let object;
+
+	try {
+		object = await resolver.resolve(activity.object);
+	} catch (e) {
+		log(`Resolution failed: ${e}`);
+		throw e;
+	}
+
+	switch (object.type) {
+	case 'Image':
+		createImage(actor, object);
+		break;
+
+	case 'Note':
+		createNote(resolver, actor, object);
+		break;
+
+	default:
+		console.warn(`Unknown type: ${object.type}`);
+		break;
+	}
+};
diff --git a/src/remote/activitypub/act/create/note.ts b/src/remote/activitypub/act/create/note.ts
new file mode 100644
index 0000000000..82a6207038
--- /dev/null
+++ b/src/remote/activitypub/act/create/note.ts
@@ -0,0 +1,89 @@
+import { JSDOM } from 'jsdom';
+import * as debug from 'debug';
+
+import Resolver from '../../resolver';
+import Post, { IPost } from '../../../../models/post';
+import createPost from '../../../../services/post/create';
+import { IRemoteUser } from '../../../../models/user';
+import resolvePerson from '../../resolve-person';
+import createImage from './image';
+import config from '../../../../config';
+
+const log = debug('misskey:activitypub');
+
+/**
+ * 投稿作成アクティビティを捌きます
+ */
+export default async function createNote(resolver: Resolver, actor: IRemoteUser, note, silent = false): Promise<IPost> {
+	if (typeof note.id !== 'string') {
+		log(`invalid note: ${JSON.stringify(note, null, 2)}`);
+		throw new Error('invalid note');
+	}
+
+	// 既に同じURIを持つものが登録されていないかチェックし、登録されていたらそれを返す
+	const exist = await Post.findOne({ uri: note.id });
+	if (exist) {
+		return exist;
+	}
+
+	log(`Creating the Note: ${note.id}`);
+
+	//#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
+
+	//#region 添付メディア
+	const media = [];
+	if ('attachment' in note && note.attachment != null) {
+		// 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
+		// TODO: ループの中でawaitはすべきでない
+		note.attachment.forEach(async media => {
+			const created = await createImage(note.actor, media);
+			media.push(created);
+		});
+	}
+	//#endregion
+
+	//#region リプライ
+	let reply = null;
+	if ('inReplyTo' in note && note.inReplyTo != null) {
+		// リプライ先の投稿がMisskeyに登録されているか調べる
+		const uri: string = note.inReplyTo.id || note.inReplyTo;
+		const inReplyToPost = uri.startsWith(config.url + '/')
+			? await Post.findOne({ _id: uri.split('/').pop() })
+			: await Post.findOne({ uri });
+
+		if (inReplyToPost) {
+			reply = inReplyToPost;
+		} else {
+			// 無かったらフェッチ
+			const inReplyTo = await resolver.resolve(note.inReplyTo) as any;
+
+			// リプライ先の投稿の投稿者をフェッチ
+			const actor = await resolvePerson(inReplyTo.attributedTo) as IRemoteUser;
+
+			// TODO: silentを常にtrueにしてはならない
+			reply = await createNote(resolver, actor, inReplyTo);
+		}
+	}
+	//#endregion
+
+	const { window } = new JSDOM(note.content);
+
+	return await createPost(actor, {
+		createdAt: new Date(note.published),
+		media,
+		reply,
+		repost: undefined,
+		text: window.document.body.textContent,
+		viaMobile: false,
+		geo: undefined,
+		visibility,
+		uri: note.id
+	});
+}