import { DomainEntity, UniqueID } from "@repo/rdx-ddd";
import { Result } from "@repo/rdx-utils";
import {
  CustomerInvoiceItemDescription,
  CustomerInvoiceItemDiscount,
  CustomerInvoiceItemQuantity,
  CustomerInvoiceItemSubtotalPrice,
  CustomerInvoiceItemTotalPrice,
  CustomerInvoiceItemUnitPrice,
} from "../../value-objects";

export interface ICustomerInvoiceItemProps {
  description: CustomerInvoiceItemDescription;
  quantity: CustomerInvoiceItemQuantity; // Cantidad de unidades
  unitPrice: CustomerInvoiceItemUnitPrice; // Precio unitario en la moneda de la factura
  //subtotalPrice?: MoneyValue; // Precio unitario * Cantidad
  discount: CustomerInvoiceItemDiscount; // % descuento
  //totalPrice?: MoneyValue;
}

export interface ICustomerInvoiceItem {
  id: UniqueID;
  description: CustomerInvoiceItemDescription;
  quantity: CustomerInvoiceItemQuantity;
  unitPrice: CustomerInvoiceItemUnitPrice;
  subtotalPrice: CustomerInvoiceItemSubtotalPrice;
  discount: CustomerInvoiceItemDiscount;
  totalPrice: CustomerInvoiceItemTotalPrice;
}

export class CustomerInvoiceItem
  extends DomainEntity<ICustomerInvoiceItemProps>
  implements ICustomerInvoiceItem
{
  private _subtotalPrice!: CustomerInvoiceItemSubtotalPrice;
  private _totalPrice!: CustomerInvoiceItemTotalPrice;

  public static create(
    props: ICustomerInvoiceItemProps,
    id?: UniqueID
  ): Result<CustomerInvoiceItem, Error> {
    const item = new CustomerInvoiceItem(props, id);

    // Reglas de negocio / validaciones
    // ...
    // ...

    // 🔹 Disparar evento de dominio "CustomerInvoiceItemCreatedEvent"
    //const { customerInvoice } = props;
    //user.addDomainEvent(new CustomerInvoiceAuthenticatedEvent(id, customerInvoice.toString()));

    return Result.ok(item);
  }

  get description(): CustomerInvoiceItemDescription {
    return this.props.description;
  }

  get quantity(): CustomerInvoiceItemQuantity {
    return this.props.quantity;
  }

  get unitPrice(): CustomerInvoiceItemUnitPrice {
    return this.props.unitPrice;
  }

  get subtotalPrice(): CustomerInvoiceItemSubtotalPrice {
    if (!this._subtotalPrice) {
      this._subtotalPrice = this.calculateSubtotal();
    }
    return this._subtotalPrice;
  }

  get discount(): CustomerInvoiceItemDiscount {
    return this.props.discount;
  }

  get totalPrice(): CustomerInvoiceItemTotalPrice {
    if (!this._totalPrice) {
      this._totalPrice = this.calculateTotal();
    }
    return this._totalPrice;
  }

  getValue() {
    return this.props;
  }

  toPrimitive() {
    return {
      description: this.description.toPrimitive(),
      quantity: this.quantity.toPrimitive(),
      unit_price: this.unitPrice.toPrimitive(),
      subtotal_price: this.subtotalPrice.toPrimitive(),
      discount: this.discount.toPrimitive(),
      total_price: this.totalPrice.toPrimitive(),
    };
  }

  calculateSubtotal(): CustomerInvoiceItemSubtotalPrice {
    return this.unitPrice.multiply(this.quantity.toNumber()); // Precio unitario * Cantidad
  }

  calculateTotal(): CustomerInvoiceItemTotalPrice {
    return this.subtotalPrice.subtract(this.subtotalPrice.percentage(this.discount.toNumber()));
  }
}