import { Work } from './work';
import { WorldCharacter } from './world-character';
import { WorldName } from './world-name';
import { Column, Entity, ManyToMany, OneToMany, PrimaryGeneratedColumn } from 'typeorm';

/**
 * This entity describes a fictional world.
 */
@Entity()
export class World implements IIdentifiableEntity, IMultiNamedEntity, IHierachicalEntity<World> {
  @PrimaryGeneratedColumn()
  public id: number;

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

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

  /**
   * works taking place in this world
   */
  @ManyToMany(
    () => Work,
    (work: Work) => work.worlds
  )
  public works: Promise<Work[]>;

  /**
   * canon characters in this world
   */
  @ManyToMany(
    () => WorldCharacter,
    (worldCharacter: WorldCharacter) => worldCharacter.worlds
  )
  public worldCharacters: Promise<WorldCharacter[]>;

  @ManyToMany(
    () => World,
    (world: World) => world.parents
  )
  public children: Promise<World[]>;

  @ManyToMany(
    () => World,
    (world: World) => world.children
  )
  public parents: Promise<World[]>;
}