Remote custom emojis (#3074)

* Remote custom emojis

* んほおおおおお

src/models/emoji.ts

@@ -0,0 +1,22 @@
+import db from '../db/mongodb';
+
+const Emoji = db.get<IEmoji>('emoji');
+
+Emoji.createIndex(['name', 'host'], { unique: true });
+
+export default Emoji;
+
+export type IEmoji = {
+	name: string;
+	host: string;
+	url: string;
+	aliases?: string[];
+	updatedAt?: Date;
+};
+
+export const packEmojis = async (
+	host: string,
+	// MeiTODO: filter
+) => {
+	return await Emoji.find({ host });
+};

src/models/note.ts

@@ -12,6 +12,7 @@ import { packMany as packFileMany, IDriveFile } from './drive-file';
 import Favorite from './favorite';
 import Following from './following';
 import config from '../config';
+import { packEmojis } from './emoji';
 
 const Note = db.get<INote>('notes');
 Note.createIndex('uri', { sparse: true, unique: true });
@@ -228,6 +229,11 @@ export const pack = async (
 
 	const id = _note._id;
 
+	// _note._userを消す前か、_note.userを解決した後でないとホストがわからない
+	if (_note._user) {
+		_note.emojis = packEmojis(_note._user.host);
+	}
+
 	// Rename _id to id
 	_note.id = _note._id;
 	delete _note._id;