refactoring

Resolve #7779

packages/backend/src/models/entities/note-unread.ts

@@ -0,0 +1,63 @@
+import { PrimaryColumn, Entity, Index, JoinColumn, Column, ManyToOne } from 'typeorm';
+import { User } from './user';
+import { Note } from './note';
+import { id } from '../id';
+import { Channel } from './channel';
+
+@Entity()
+@Index(['userId', 'noteId'], { unique: true })
+export class NoteUnread {
+	@PrimaryColumn(id())
+	public id: string;
+
+	@Index()
+	@Column(id())
+	public userId: User['id'];
+
+	@ManyToOne(type => User, {
+		onDelete: 'CASCADE'
+	})
+	@JoinColumn()
+	public user: User | null;
+
+	@Index()
+	@Column(id())
+	public noteId: Note['id'];
+
+	@ManyToOne(type => Note, {
+		onDelete: 'CASCADE'
+	})
+	@JoinColumn()
+	public note: Note | null;
+
+	/**
+	 * メンションか否か
+	 */
+	@Index()
+	@Column('boolean')
+	public isMentioned: boolean;
+
+	/**
+	 * ダイレクト投稿か否か
+	 */
+	@Index()
+	@Column('boolean')
+	public isSpecified: boolean;
+
+	//#region Denormalized fields
+	@Index()
+	@Column({
+		...id(),
+		comment: '[Denormalized]'
+	})
+	public noteUserId: User['id'];
+
+	@Index()
+	@Column({
+		...id(),
+		nullable: true,
+		comment: '[Denormalized]'
+	})
+	public noteChannelId: Channel['id'] | null;
+	//#endregion
+}