import { Column, Entity, OneToMany, PrimaryGeneratedColumn } from 'typeorm';
import { AuthorName } from './author-name';
import { WorkAuthor } from './work-author';

/**
 * This entity represents a single real-world entity, be it a person or named group of persons.
 */
@Entity()
export class Author implements IIdentifiableEntity, IMultiNamedEntity {
  @PrimaryGeneratedColumn()
  public id: number;

  @Column({
    nullable: false,
  })
  public nameCanonical: string;

  @OneToMany(
    () => AuthorName,
    (authorName: AuthorName) => authorName.entity
  )
  public names: Promise<AuthorName[]>;

  /**
   * ultimately connects the author with a work and their role in that work
   */
  @OneToMany(
    () => WorkAuthor,
    (workAuthor: WorkAuthor) => workAuthor.author
  )
  public workAuthors: Promise<WorkAuthor[]>;
}