refactoring

Resolve #7779

packages/backend/src/models/entities/blocking.ts

@@ -0,0 +1,42 @@
+import { PrimaryColumn, Entity, Index, JoinColumn, Column, ManyToOne } from 'typeorm';
+import { User } from './user';
+import { id } from '../id';
+
+@Entity()
+@Index(['blockerId', 'blockeeId'], { unique: true })
+export class Blocking {
+	@PrimaryColumn(id())
+	public id: string;
+
+	@Index()
+	@Column('timestamp with time zone', {
+		comment: 'The created date of the Blocking.'
+	})
+	public createdAt: Date;
+
+	@Index()
+	@Column({
+		...id(),
+		comment: 'The blockee user ID.'
+	})
+	public blockeeId: User['id'];
+
+	@ManyToOne(type => User, {
+		onDelete: 'CASCADE'
+	})
+	@JoinColumn()
+	public blockee: User | null;
+
+	@Index()
+	@Column({
+		...id(),
+		comment: 'The blocker user ID.'
+	})
+	public blockerId: User['id'];
+
+	@ManyToOne(type => User, {
+		onDelete: 'CASCADE'
+	})
+	@JoinColumn()
+	public blocker: User | null;
+}