import { Entity, JoinTable, ManyToMany, OneToMany } from 'typeorm';
import { Author } from './author';
import { MultiNamed } from './bases/multiNamed';
import { Copy } from './copy';
import { IntellectualProperty } from './intellectualProperty';
import { Tag } from './tag';

@Entity()
export class Book extends MultiNamed {
  @OneToMany(() => Copy, copy => copy.original, {
    nullable: true,
    onDelete: 'CASCADE',
    onUpdate: 'CASCADE',
  })
  public copies: Promise<Copy[]>;

  @ManyToMany(() => Author, {
    nullable: true,
    onDelete: 'CASCADE',
    onUpdate: 'CASCADE',
  })
  @JoinTable()
  public authors: Promise<Author[]>;

  @ManyToMany(() => IntellectualProperty, {
    nullable: true,
    onDelete: 'CASCADE',
    onUpdate: 'CASCADE',
  })
  @JoinTable()
  public intellectualProperties: Promise<IntellectualProperty[]>;

  @ManyToMany(() => Tag, {
    nullable: true,
    onDelete: 'CASCADE',
    onUpdate: 'CASCADE',
  })
  @JoinTable()
  public tags: Promise<Tag[]>;
}