import {
    IsEnum,
    IsNotEmpty,
    IsObject,
    Validate,
    ValidatorConstraint,
    type ValidatorConstraintInterface,
    type ValidationArguments
} from 'class-validator';
import { ShopFiatCurrency } from '../../../types/ShopFiatCurrency';

@ValidatorConstraint({ name: 'coingeckoMoneroFiat' })
class CoingeckoMoneroFiatConstraint implements ValidatorConstraintInterface {
    validate(monero: Record<string, number>, args: ValidationArguments): boolean {
        const { shopFiatCurrency } = args.object as CoingeckoSimplePriceResponseDto;

        if (!shopFiatCurrency) {
            return false;
        }

        const rate = monero[shopFiatCurrency.toLowerCase()];

        return typeof rate === 'number' && Number.isFinite(rate) && rate > 0;
    }

    defaultMessage(): string {
        return 'CoinGecko monero fiat rate must be a positive number';
    }
}

export class CoingeckoSimplePriceResponseDto {
    @IsEnum(ShopFiatCurrency)
    shopFiatCurrency: ShopFiatCurrency;

    @IsNotEmpty()
    @IsObject()
    @Validate(CoingeckoMoneroFiatConstraint)
    monero: Record<string, number>;
}