import { Entity, Column, PrimaryGeneratedColumn, ManyToOne } from 'typeorm';
import { Purchase } from './purchase.entity';
import { Product } from '../products/product.entity';

@Entity('purchase_items')
export class PurchaseItem {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column({ type: 'uuid', nullable: true })
  purchase_id: string;

  @ManyToOne(() => Purchase, purchase => purchase.purchase_items)
  purchase: Purchase;

  @Column({ type: 'uuid', nullable: true })
  product_id: string;

  @ManyToOne(() => Product, product => product.purchase_items)
  product: Product;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  quantity: number;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  unit_price: number;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  total_price: number;

  @Column({ type: 'varchar', length: 10, nullable: false })
  currency: string;

  @Column({ type: 'decimal', precision: 18, scale: 2, nullable: false })
  rmb_equivalent: number;
}