Uecko_ERP/modules/customer-invoices/src/api/domain/entities/customer-invoice-items/customer-invoice-item.ts

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import { CurrencyCode, DomainEntity, LanguageCode, Percentage, UniqueID } from "@repo/rdx-ddd";
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import { Maybe, Result } from "@repo/rdx-utils";
import {
CustomerInvoiceItemDescription,
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ItemAmount,
ItemDiscount,
ItemQuantity,
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} from "../../value-objects";
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import { ItemTaxes, ItemTaxTotal } from "../item-taxes";
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export interface CustomerInvoiceItemProps {
description: Maybe<CustomerInvoiceItemDescription>;
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quantity: Maybe<ItemQuantity>; // Cantidad de unidades
unitAmount: Maybe<ItemAmount>; // Precio unitario en la moneda de la factura
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discountPercentage: Maybe<ItemDiscount>; // % descuento
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taxes: ItemTaxes;
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languageCode: LanguageCode;
currencyCode: CurrencyCode;
}
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export interface ICustomerInvoiceItem {
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isNonValued: boolean;
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description: Maybe<CustomerInvoiceItemDescription>;
quantity: Maybe<ItemQuantity>; // Cantidad de unidades
unitAmount: Maybe<ItemAmount>; // Precio unitario en la moneda de la factura
discountPercentage: Maybe<ItemDiscount>; // % descuento
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taxes: ItemTaxes;
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languageCode: LanguageCode;
currencyCode: CurrencyCode;
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getSubtotalAmount(): ItemAmount;
getDiscountAmount(): ItemAmount;
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getTaxableAmount(): ItemAmount;
getTaxesAmount(): ItemAmount;
getTotalAmount(): ItemAmount;
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}
export class CustomerInvoiceItem
extends DomainEntity<CustomerInvoiceItemProps>
implements ICustomerInvoiceItem
{
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protected _isNonValued!: boolean;
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public static create(
props: CustomerInvoiceItemProps,
id?: UniqueID
): Result<CustomerInvoiceItem, Error> {
const item = new CustomerInvoiceItem(props, id);
// Reglas de negocio / validaciones
// ...
// ...
return Result.ok(item);
}
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protected constructor(props: CustomerInvoiceItemProps, id?: UniqueID) {
super(props, id);
this._isNonValued = this.quantity.isNone() || this.unitAmount.isNone();
}
get isNonValued(): boolean {
return this._isNonValued;
}
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get description(): Maybe<CustomerInvoiceItemDescription> {
return this.props.description;
}
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get quantity(): Maybe<ItemQuantity> {
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return this.props.quantity;
}
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get unitAmount(): Maybe<ItemAmount> {
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return this.props.unitAmount;
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}
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get discountPercentage(): Maybe<Percentage> {
return this.props.discountPercentage;
}
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get languageCode(): LanguageCode {
return this.props.languageCode;
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}
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get currencyCode(): CurrencyCode {
return this.props.currencyCode;
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}
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get taxes(): ItemTaxes {
return this.props.taxes;
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}
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getProps(): CustomerInvoiceItemProps {
return this.props;
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}
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toPrimitive() {
return this.getProps();
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}
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/**
* @private
* @summary Calcula el importe de descuento a partir del subtotal y el porcentaje.
* @param subtotalAmount - Importe subtotal.
* @returns El importe de descuento calculado.
*/
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private _getDiscountAmount(subtotalAmount: ItemAmount): ItemAmount {
const discount = this.discountPercentage.match(
(percentage) => percentage,
() => ItemDiscount.zero()
);
return subtotalAmount.percentage(discount);
}
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/**
* @private
* @summary Calcula el importe imponible restando el descuento al subtotal.
* @param subtotalAmount - Importe subtotal.
* @param discountAmount - Importe de descuento.
* @returns El importe imponible resultante.
*/
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private _getTaxableAmount(subtotalAmount: ItemAmount, discountAmount: ItemAmount): ItemAmount {
return subtotalAmount.subtract(discountAmount);
}
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/**
* @private
* @summary Calcula el importe total de impuestos sobre la base imponible.
* @param taxableAmount - Importe imponible.
* @returns El importe de impuestos calculado.
*/
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private _getTaxesAmount(taxableAmount: ItemAmount): ItemAmount {
return this.props.taxes.getTaxesAmount(taxableAmount);
}
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/**
* @private
* @summary Calcula el importe total sumando base imponible e impuestos.
* @param taxableAmount - Importe imponible.
* @param taxesAmount - Importe de impuestos.
* @returns El importe total del ítem.
*/
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private _getTotalAmount(taxableAmount: ItemAmount, taxesAmount: ItemAmount): ItemAmount {
return taxableAmount.add(taxesAmount);
}
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/**
* @summary Calcula el subtotal del ítem (cantidad × importe unitario).
* @returns Un `ItemAmount` con el subtotal del ítem.
* @remarks
* Si la cantidad o el importe unitario no están definidos, se asumen valores cero.
*/
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public getSubtotalAmount(): ItemAmount {
const curCode = this.currencyCode.code;
const quantity = this.quantity.match(
(quantity) => quantity,
() => ItemQuantity.zero()
);
const unitAmount = this.unitAmount.match(
(unitAmount) => unitAmount,
() => ItemAmount.zero(curCode)
);
return unitAmount.multiply(quantity);
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}
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/**
* @summary Calcula el importe total de descuento del ítem.
* @returns Un `ItemAmount` con el importe descontado.
*/
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public getDiscountAmount(): ItemAmount {
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return this._getDiscountAmount(this.getSubtotalAmount());
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}
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/**
* @summary Calcula el importe imponible (subtotal descuento).
* @returns Un `ItemAmount` con la base imponible del ítem.
*/
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public getTaxableAmount(): ItemAmount {
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return this._getTaxableAmount(this.getSubtotalAmount(), this.getDiscountAmount());
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}
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/**
* @summary Calcula el importe total de impuestos aplicados al ítem.
* @returns Un `ItemAmount` con el total de impuestos.
*/
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public getTaxesAmount(): ItemAmount {
return this._getTaxesAmount(this.getTaxableAmount());
}
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/**
* @summary Calcula el importe total final del ítem (base imponible + impuestos).
* @returns Un `ItemAmount` con el importe total.
*/
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public getTotalAmount(): ItemAmount {
const taxableAmount = this.getTaxableAmount();
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const taxesAmount = this._getTaxesAmount(taxableAmount);
return this._getTotalAmount(taxableAmount, taxesAmount);
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}
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/**
* @summary Obtiene los importes de impuestos agrupados por tipo de impuesto.
* @returns Una colección con la base imponible y el importe de impuestos por cada tipo.
*/
public getTaxesAmountByTaxes(): ItemTaxTotal[] {
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return this.taxes.getTaxesAmountByTaxes(this.getTaxableAmount());
}
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/**
* @summary Devuelve todos los importes calculados del ítem en un único objeto.
* @returns Un objeto con las propiedades:
* - `subtotalAmount`
* - `discountAmount`
* - `taxableAmount`
* - `taxesAmount`
* - `totalAmount`
* @remarks
* Este método es útil para mostrar todos los cálculos en la interfaz de usuario
* o serializar el ítem con sus valores calculados.
*/
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public getAllAmounts() {
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const subtotalAmount = this.getSubtotalAmount();
const discountAmount = this._getDiscountAmount(subtotalAmount);
const taxableAmount = this._getTaxableAmount(subtotalAmount, discountAmount);
const taxesAmount = this._getTaxesAmount(taxableAmount);
const totalAmount = this._getTotalAmount(taxableAmount, taxesAmount);
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return {
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subtotalAmount,
discountAmount,
taxableAmount,
taxesAmount,
totalAmount,
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};
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}
}