import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  ManyToOne,
  OneToOne,
  JoinColumn,
  Index,
} from 'typeorm';
import { Email } from './email.entity';
import { Content } from './content.entity';

@Entity('Attachments')
export class Attachment {
  @PrimaryGeneratedColumn({ type: 'int' })
  Id!: number;

  @Index('IX_Attachments_EmailMessageId')
  @Column({ type: 'int' })
  EmailMessageId!: number;

  @Column({ type: 'varchar', length: 255 })
  FileName!: string;

  @Column({ type: 'varchar', length: 100 })
  ContentType!: string;

  @Column({ type: 'tinyint', width: 1 })
  Erechnung!: boolean;

  /** SHA-256 der Datei — entspricht der Checksumme in Paperless ≥ 3.0 */
  @Column({ type: 'varchar', length: 64, default: '' })
  Checksum!: string;

  /**
   * SHA-256 über den normalisierten PDF-Text (siehe pdf-fingerprint.util).
   * Erkennt Duplikate, deren Datei neu erzeugt wurde (andere Checksumme).
   * `''` = berechnet, aber ohne Textebene; `null` = noch nicht berechnet.
   */
  @Index('IX_Attachments_ContentFingerprint')
  @Column({ type: 'varchar', length: 64, nullable: true })
  ContentFingerprint!: string | null;

  @Column({ type: 'varchar', length: 255, nullable: true })
  ContentId!: string | null;

  @Column({ type: 'tinyint', width: 1 })
  IsEmbedded!: boolean;

  @Index('IX_Attachments_ParentId')
  @Column({ type: 'int', nullable: true })
  ParentId!: number | null;

  @Column({ type: 'json', nullable: true })
  PaperlessDocumentIds!: any | null;

  @Column({ type: 'int', default: 0 })
  ImportStatus!: number;

  @Column({ type: 'varchar', length: 255, nullable: true })
  InterneBelegnummer!: string | null;

  @Column({ type: 'int', default: 0 })
  PageCount!: number;

  @ManyToOne(() => Email, (email) => email.Attachments)
  @JoinColumn({ name: 'EmailMessageId' })
  EmailMessage!: Email;

  @OneToOne(() => Content, (content) => content.AttachmentEntity)
  Content!: Content;
}