refactoring

Resolve #7779

packages/backend/src/services/note/unread.ts

@@ -0,0 +1,55 @@
+import { Note } from '@/models/entities/note';
+import { publishMainStream } from '@/services/stream';
+import { User } from '@/models/entities/user';
+import { Mutings, NoteThreadMutings, NoteUnreads } from '@/models/index';
+import { genId } from '@/misc/gen-id';
+
+export async function insertNoteUnread(userId: User['id'], note: Note, params: {
+	// NOTE: isSpecifiedがtrueならisMentionedは必ずfalse
+	isSpecified: boolean;
+	isMentioned: boolean;
+}) {
+	//#region ミュートしているなら無視
+	// TODO: 現在の仕様ではChannelにミュートは適用されないのでよしなにケアする
+	const mute = await Mutings.find({
+		muterId: userId
+	});
+	if (mute.map(m => m.muteeId).includes(note.userId)) return;
+	//#endregion
+
+	// スレッドミュート
+	const threadMute = await NoteThreadMutings.findOne({
+		userId: userId,
+		threadId: note.threadId || note.id,
+	});
+	if (threadMute) return;
+
+	const unread = {
+		id: genId(),
+		noteId: note.id,
+		userId: userId,
+		isSpecified: params.isSpecified,
+		isMentioned: params.isMentioned,
+		noteChannelId: note.channelId,
+		noteUserId: note.userId,
+	};
+
+	await NoteUnreads.insert(unread);
+
+	// 2秒経っても既読にならなかったら「未読の投稿がありますよ」イベントを発行する
+	setTimeout(async () => {
+		const exist = await NoteUnreads.findOne(unread.id);
+
+		if (exist == null) return;
+
+		if (params.isMentioned) {
+			publishMainStream(userId, 'unreadMention', note.id);
+		}
+		if (params.isSpecified) {
+			publishMainStream(userId, 'unreadSpecifiedNote', note.id);
+		}
+		if (note.channelId) {
+			publishMainStream(userId, 'unreadChannel', note.id);
+		}
+	}, 2000);
+}