import { ApiProperty } from '@midwayjs/swagger';
import { Column, CreateDateColumn, Entity, ManyToOne, PrimaryGeneratedColumn, UpdateDateColumn } from 'typeorm';
import { Product } from './product.entity';

@Entity('product_stock_component')
export class ProductStockComponent {
  @ApiProperty({ type: Number })
  @PrimaryGeneratedColumn()
  id: number;

  @ApiProperty({ type: Number })
  @Column()
  productId: number;

  @ApiProperty({ description: '组件所关联的 SKU', type: 'string' })
  @Column({ type: 'varchar', length: 64 })
  sku: string;
  
  @ApiProperty({ type: Number, description: '组成数量' })
  @Column({ type: 'int', default: 1 })
  quantity: number;

  // 多对一,组件隶属于一个产品
  @ManyToOne(() => Product, (product) => product.components, { onDelete: 'CASCADE' })
  product: Product;

  @ApiProperty({ description: '创建时间' })
  @CreateDateColumn()
  createdAt: Date;

  @ApiProperty({ description: '更新时间' })
  @UpdateDateColumn()
  updatedAt: Date;
}