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

/**
 * This entity describes a fictional world.
 */
@Entity()
export class World
  implements IdentifiableEntityInterface, MultiNamedEntityInterface, HierarchicalEntityInterface<World> {
  @PrimaryGeneratedColumn()
  public id!: number;

  @Column({
    nullable: false,
    default: '',
  })
  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)
  @JoinTable()
  public worldCharacters!: Promise<WorldCharacter[]>;

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

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