feat: 個人宛てお知らせ機能 (#107)

* feat: 個人宛てお知らせ機能

* Remove unused import

* Update packages/backend/src/server/api/endpoints/admin/announcements/create.ts

Co-authored-by: riku6460 <17585784+riku6460@users.noreply.github.com>

* Update packages/frontend/src/pages/announcements.vue

Co-authored-by: riku6460 <17585784+riku6460@users.noreply.github.com>

* Restore breakline

* 一般向けAPIにはuserオブジェクトを提供しない

* fix

* Fix

* Update packages/misskey-js/src/entities.ts

Co-authored-by: riku6460 <17585784+riku6460@users.noreply.github.com>

* Fix

* Update misskey-js.api.md

* Fix lint

* 他のテーブルに合わせて character varying(32) にした

* count クエリを1つにまとめた

* user を pack するようにした

* いろいろ修正

* 個人宛てのお知らせの表示を改善

* Update misskey-js.api.md

* Merge migration scripts

* Fix

* Update packages/backend/migration/1688647797135-userannouncement.js

Co-authored-by: riku6460 <17585784+riku6460@users.noreply.github.com>

* Update packages/backend/src/models/entities/Announcement.ts

Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>

* Fix

* Update migration script

---------

Co-authored-by: CyberRex <hspwinx86@gmail.com>
Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>

packages/backend/src/core/entities/UserEntityService.ts

@@ -1,5 +1,5 @@
 import { Inject, Injectable } from '@nestjs/common';
-import { In, Not } from 'typeorm';
+import { In, IsNull, Not } from 'typeorm';
 import * as Redis from 'ioredis';
 import _Ajv from 'ajv';
 import { ModuleRef } from '@nestjs/core';
@@ -218,9 +218,11 @@ export class UserEntityService implements OnModuleInit {
 			userId: userId,
 		});
 
-		const count = await this.announcementsRepository.countBy(reads.length > 0 ? {
-			id: Not(In(reads.map(read => read.announcementId))),
-		} : {});
+		const id = reads.length > 0 ? Not(In(reads.map(read => read.announcementId))) : undefined;
+		const count = await this.announcementsRepository.countBy([
+			{ id, userId: IsNull() },
+			{ id, userId: userId },
+		]);
 
 		return count > 0;
 	}