class StockMovement extends VendureEntity {
  readonly @Column({ nullable: false, type: 'varchar' })
    readonly type: StockMovementType;
  @ManyToOne(type => ProductVariant, variant => variant.stockMovements)
    productVariant: ProductVariant;
  @Column()
    quantity: number;
}

class Allocation extends StockMovement {
  readonly readonly type = StockMovementType.ALLOCATION;
  constructor(input: DeepPartial<Allocation>)
  @ManyToOne(type => OrderLine)
    orderLine: OrderLine;
}

class Cancellation extends StockMovement {
  readonly readonly type = StockMovementType.CANCELLATION;
  constructor(input: DeepPartial<Cancellation>)
  @ManyToOne(type => OrderItem, orderItem => orderItem.cancellation)
    orderItem: OrderItem;
}

class Release extends StockMovement {
  readonly readonly type = StockMovementType.RELEASE;
  constructor(input: DeepPartial<Release>)
  @ManyToOne(type => OrderItem)
    orderItem: OrderItem;
}

class Sale extends StockMovement {
  readonly readonly type = StockMovementType.SALE;
  constructor(input: DeepPartial<Sale>)
  @ManyToOne(type => OrderLine)
    orderLine: OrderLine;
}

class StockAdjustment extends StockMovement {
  readonly readonly type = StockMovementType.ADJUSTMENT;
  constructor(input: DeepPartial<StockAdjustment>)
}