import { DomainValidationError } from "@erp/core/api";
import {
  AggregateRoot,
  CurrencyCode,
  LanguageCode,
  Percentage,
  TextValue,
  UniqueID,
  UtcDate,
} from "@repo/rdx-ddd";
import { Maybe, Result } from "@repo/rdx-utils";
import { CustomerInvoiceItems } from "../entities";
import { InvoiceTaxes } from "../entities/invoice-taxes";
import {
  CustomerInvoiceNumber,
  CustomerInvoiceSerie,
  CustomerInvoiceStatus,
  InvoiceAmount,
  InvoiceRecipient,
} from "../value-objects";

export interface CustomerInvoiceProps {
  companyId: UniqueID;

  isProforma: boolean;
  invoiceNumber: CustomerInvoiceNumber;
  status: CustomerInvoiceStatus;
  series: Maybe<CustomerInvoiceSerie>;

  invoiceDate: UtcDate;
  operationDate: Maybe<UtcDate>;

  customerId: UniqueID;
  recipient: Maybe<InvoiceRecipient>;

  notes: Maybe<TextValue>;

  languageCode: LanguageCode;
  currencyCode: CurrencyCode;

  taxes: Maybe<InvoiceTaxes>;
  items: CustomerInvoiceItems;

  discountPercentage: Percentage;
}

export interface ICustomerInvoice {
  getSubtotalAmount(): InvoiceAmount;
  getDiscountAmount(): InvoiceAmount;

  getTaxableAmount(): InvoiceAmount;
  getTaxesAmount(): InvoiceAmount;
  getTotalAmount(): InvoiceAmount;
}

export type CustomerInvoicePatchProps = Partial<Omit<CustomerInvoiceProps, "companyId">>;

export class CustomerInvoice
  extends AggregateRoot<CustomerInvoiceProps>
  implements ICustomerInvoice
{
  private _items!: CustomerInvoiceItems;
  private _taxes!: InvoiceTaxes;

  protected constructor(props: CustomerInvoiceProps, id?: UniqueID) {
    super(props, id);
    this._items =
      props.items ||
      CustomerInvoiceItems.create({
        languageCode: props.languageCode,
        currencyCode: props.currencyCode,
      });

    this._taxes = props.taxes.match(
      (taxes) => taxes,
      () => InvoiceTaxes.create({})
    );
  }

  static create(props: CustomerInvoiceProps, id?: UniqueID): Result<CustomerInvoice, Error> {
    const customerInvoice = new CustomerInvoice(props, id);

    // Reglas de negocio / validaciones

    if (!customerInvoice.isProforma && !customerInvoice.hasRecipient) {
      return Result.fail(
        new DomainValidationError(
          "MISSING_CUSTOMER_DATA",
          "recipient",
          "Customer data must be provided for non-proforma invoices"
        )
      );
    }

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

    return Result.ok(customerInvoice);
  }

  public update(partialInvoice: CustomerInvoicePatchProps): Result<CustomerInvoice, Error> {
    throw new Error("Not implemented");
  }

  public get companyId(): UniqueID {
    return this.props.companyId;
  }

  public get customerId(): UniqueID {
    return this.props.customerId;
  }

  public get isProforma(): boolean {
    return this.props.isProforma;
  }

  public get status(): CustomerInvoiceStatus {
    return this.props.status;
  }

  public get series(): Maybe<CustomerInvoiceSerie> {
    return this.props.series;
  }

  public get invoiceNumber() {
    return this.props.invoiceNumber;
  }

  public get invoiceDate(): UtcDate {
    return this.props.invoiceDate;
  }

  public get operationDate(): Maybe<UtcDate> {
    return this.props.operationDate;
  }

  public get notes(): Maybe<TextValue> {
    return this.props.notes;
  }

  public get recipient(): Maybe<InvoiceRecipient> {
    return this.props.recipient;
  }

  public get languageCode(): LanguageCode {
    return this.props.languageCode;
  }

  public get currencyCode(): CurrencyCode {
    return this.props.currencyCode;
  }

  public get discountPercentage(): Percentage {
    return this.props.discountPercentage;
  }

  // Method to get the complete list of line items
  public get items(): CustomerInvoiceItems {
    return this._items;
  }

  public get taxes(): InvoiceTaxes {
    return this._taxes;
  }

  public get hasRecipient() {
    return this.recipient.isSome();
  }

  public getSubtotalAmount(): InvoiceAmount {
    const itemsSubtotal = this.items.getTotalAmount().convertScale(2);

    return InvoiceAmount.create({
      value: itemsSubtotal.value,
      currency_code: this.currencyCode.code,
    }).data as InvoiceAmount;
  }

  public getDiscountAmount(): InvoiceAmount {
    return this.getSubtotalAmount().percentage(this.discountPercentage) as InvoiceAmount;
  }

  public getTaxableAmount(): InvoiceAmount {
    return this.getSubtotalAmount().subtract(this.getDiscountAmount()) as InvoiceAmount;
  }

  public getTaxesAmount(): InvoiceAmount {
    return this._getTaxesAmount(this.getTaxableAmount());
  }

  public getTotalAmount(): InvoiceAmount {
    const taxableAmount = this.getTaxableAmount();
    return taxableAmount.add(this._getTaxesAmount(taxableAmount)) as InvoiceAmount;
  }

  public getAllAmounts() {
    return {
      subtotalAmount: this.getSubtotalAmount(),
      discountAmount: this.getDiscountAmount(),
      taxableAmount: this.getTaxableAmount(),
      taxesAmount: this.getTaxesAmount(),
      totalAmount: this.getTotalAmount(),
    };
  }

  private _getTaxesAmount(_taxableAmount: InvoiceAmount): InvoiceAmount {
    return this._taxes.getTaxesAmount(_taxableAmount);
  }
}