import { Result } from "@common/helpers";
import DineroFactory, { Currency, Dinero } from "dinero.js";
import { Percentage } from "./percentage";
import { Quantity } from "./quantity";
import { ValueObject } from "./value-object";

const DEFAULT_SCALE = 2;

type CurrencyData = Currency;

export type RoundingMode =
  | "HALF_ODD"
  | "HALF_EVEN"
  | "HALF_UP"
  | "HALF_DOWN"
  | "HALF_TOWARDS_ZERO"
  | "HALF_AWAY_FROM_ZERO"
  | "DOWN";

interface IMoneyValueProps {
  amount: number;
  scale: number;
  currency_code: string;
}

interface IMoneyValue {
  amount: number;
  scale: number;
  currency: Dinero.Currency;

  getValue(): IMoneyValueProps;
  convertScale(newScale: number): MoneyValue;
  add(addend: MoneyValue): MoneyValue;
  subtract(subtrahend: MoneyValue): MoneyValue;
  multiply(multiplier: number | Quantity, roundingMode?: RoundingMode): MoneyValue;
  divide(divisor: number, roundingMode?: RoundingMode): MoneyValue;
  percentage(percentage: number, roundingMode?: RoundingMode): MoneyValue;
  equalsTo(comparator: MoneyValue): boolean;
  greaterThan(comparator: MoneyValue): boolean;
  lessThan(comparator: MoneyValue): boolean;
  isZero(): boolean;
  isPositive(): boolean;
  isNegative(): boolean;
  hasSameCurrency(comparator: MoneyValue): boolean;
  hasSameAmount(comparator: MoneyValue): boolean;
  format(locale: string): string;
}

export class MoneyValue extends ValueObject<IMoneyValueProps> implements IMoneyValue {
  private readonly dinero: Dinero;

  static create(props: IMoneyValueProps) {
    return Result.ok(new MoneyValue(props));
  }

  constructor(props: IMoneyValueProps) {
    super(props);
    const { amount, scale, currency_code } = props;
    this.dinero = Object.freeze(
      DineroFactory({
        amount,
        precision: scale,
        currency: currency_code as Currency,
      })
    ); // 🔒 Garantiza inmutabilidad
  }

  get amount(): number {
    return this.dinero.getAmount() / Math.pow(10, this.dinero.getPrecision());
  }

  get currency(): CurrencyData {
    return this.dinero.getCurrency();
  }

  get scale(): number {
    return this.dinero.getPrecision();
  }

  getValue(): IMoneyValueProps {
    return this.props;
  }

  convertScale(newScale: number, roundingMode: RoundingMode = "HALF_UP"): MoneyValue {
    const _newDinero = this.dinero.convertPrecision(newScale, roundingMode);
    return new MoneyValue({
      amount: _newDinero.getAmount(),
      scale: _newDinero.getPrecision(),
      currency_code: _newDinero.getCurrency(),
    });
  }

  add(addend: MoneyValue): MoneyValue {
    return new MoneyValue({
      amount: this.dinero.add(addend.dinero).getAmount(),
      scale: this.scale,
      currency_code: this.currency,
    });
  }

  subtract(subtrahend: MoneyValue): MoneyValue {
    return new MoneyValue({
      amount: this.dinero.subtract(subtrahend.dinero).getAmount(),
      scale: this.scale,
      currency_code: this.currency,
    });
  }

  multiply(multiplier: number | Quantity, roundingMode?: RoundingMode): MoneyValue {
    const _multiplier = typeof multiplier === "number" ? multiplier : multiplier.toNumber();

    const _newDinero = this.dinero.multiply(_multiplier, roundingMode);
    return new MoneyValue({
      amount: _newDinero.getAmount(),
      scale: _newDinero.getPrecision(),
      currency_code: _newDinero.getCurrency(),
    });
  }

  divide(divisor: number | Quantity, roundingMode?: RoundingMode): MoneyValue {
    const _divisor = typeof divisor === "number" ? divisor : divisor.toNumber();

    const _newDinero = this.dinero.divide(_divisor, roundingMode);
    return new MoneyValue({
      amount: _newDinero.getAmount(),
      scale: _newDinero.getPrecision(),
      currency_code: _newDinero.getCurrency(),
    });
  }

  percentage(percentage: number | Percentage, roundingMode?: RoundingMode): MoneyValue {
    const _percentage = typeof percentage === "number" ? percentage : percentage.toNumber();

    const _newDinero = this.dinero.percentage(_percentage, roundingMode);
    return new MoneyValue({
      amount: _newDinero.getAmount(),
      scale: _newDinero.getPrecision(),
      currency_code: _newDinero.getCurrency(),
    });
  }

  equalsTo(comparator: MoneyValue): boolean {
    return this.dinero.equalsTo(comparator.dinero);
  }

  greaterThan(comparator: MoneyValue): boolean {
    return this.dinero.greaterThan(comparator.dinero);
  }

  lessThan(comparator: MoneyValue): boolean {
    return this.dinero.lessThan(comparator.dinero);
  }

  isZero(): boolean {
    return this.dinero.isZero();
  }

  isPositive(): boolean {
    return this.amount > 0;
  }

  isNegative(): boolean {
    return this.amount < 0;
  }

  hasSameCurrency(comparator: MoneyValue): boolean {
    return this.dinero.hasSameCurrency(comparator.dinero);
  }

  hasSameAmount(comparator: MoneyValue): boolean {
    return this.dinero.hasSameAmount(comparator.dinero);
  }

  format(locale: string): string {
    const amount = this.amount;
    const currency = this.currency;
    const scale = this.scale;

    return new Intl.NumberFormat(locale, {
      style: "currency",
      currency: currency,
      minimumFractionDigits: scale,
      maximumFractionDigits: scale,
      useGrouping: true,
    }).format(amount);
  }
}