import currency from "currency.js";
import { bookUrl } from "./bookUrl";
import { extractPriceFrom } from "./extractPriceFrom";
import { getRate } from "./rates";
import { cacheBookPrice, getBookPrice } from "./cache";
import { format, isToday } from "date-fns";

export const bookPriceFor = async (country) => {
  l("looking price for", country.countryCode);

  const url = bookUrl(country.countryCode);

  const fromCache = getBookPrice(url);

  if (fromCache && isToday(fromCache.cachedAt)) {
    l("found book price in cache", fromCache);
    return fromCache;
  }

  const countryPrice = await extractPriceFrom(url);

  let convertedPrice;

  if (countryPrice) {
    const rate = await getRate(country.currencyCode);

    l("rate for", country.currencyCode, "is", rate);

    convertedPrice = currency(countryPrice).divide(rate);

    convertedPrice = {
      intValue: convertedPrice.intValue,
      format: convertedPrice.format(),
    };

    l("converted price for", country.currencyCode, convertedPrice);
  }

  const newPrice = {
    ...country,
    countryPrice,
    convertedPrice,
    url,
    cachedAt: format(new Date(), "yyyy-MM-dd"),
  };

  cacheBookPrice(newPrice, url);

  return newPrice;
};