const got = require('@/utils/got');
const { parseDate } = require('@/utils/parse-date');
const { art } = require('@/utils/render');
const path = require('path');
const dayjs = require('dayjs');

module.exports = async (ctx) => {
    const locale = ctx.params.locale ?? 'en-US';
    const country = ctx.params.country ?? 'US';

    const rootUrl = 'https://store.epicgames.com';
    const currentUrl = `${rootUrl}/${locale}/free-games?lang=${locale}`;
    const apiUrl = `https://store-site-backend-static-ipv4.ak.epicgames.com/freeGamesPromotions?locale=${locale}&country=${country}&allowCountries=${country}`;
    const contentBaseUrl = `https://store-content-ipv4.ak.epicgames.com/api/${locale}/content`;

    const response = await got({
        method: 'get',
        url: apiUrl,
    });

    const now = dayjs();
    const items = response.data.data.Catalog.searchStore.elements
        .filter(
            (item) =>
                item.promotions &&
                item.promotions.promotionalOffers &&
                item.promotions.promotionalOffers[0] &&
                dayjs(item.promotions.promotionalOffers[0].promotionalOffers[0].startDate) <= now &&
                dayjs(item.promotions.promotionalOffers[0].promotionalOffers[0].endDate) > now
        )
        .map(async (item) => {
            let link = `${rootUrl}/${locale}/p/`;
            let contentUrl = `${contentBaseUrl}/products/`;
            let isBundles = false;
            item.categories.some((category) => {
                if (category.path === 'bundles') {
                    link = `${rootUrl}/${locale}/bundles/`;
                    isBundles = true;
                    contentUrl = `${contentBaseUrl}/bundles/`;
                    return true;
                }
                return false;
            });
            const linkSlug = item.catalogNs.mappings.length > 0 ? item.catalogNs.mappings[0].pageSlug : item.offerMappings.length > 0 ? item.offerMappings[0].pageSlug : item.productSlug ? item.productSlug : item.urlSlug;
            link += linkSlug;
            contentUrl += linkSlug;
            let description = item.description;
            if (item.offerType !== 'BASE_GAME') {
                const contentResp = await got({
                    method: 'get',
                    url: contentUrl,
                });
                description = isBundles ? contentResp.data.data.about.shortDescription : contentResp.data.pages[0].data.about.shortDescription;
            }

            let image = item.keyImages[0].url;
            item.keyImages.some((keyImage) => {
                if (keyImage.type === 'DieselStoreFrontWide') {
                    image = keyImage.url;
                    return true;
                }
                return false;
            });
            return {
                title: item.title,
                author: item.seller.name,
                link,
                description: art(path.join(__dirname, 'templates/description.art'), {
                    description,
                    image,
                }),
                pubDate: parseDate(item.promotions.promotionalOffers[0].promotionalOffers[0].startDate),
            };
        });
    ctx.state.data = {
        title: 'Epic Games Store - Free Games',
        link: currentUrl,
        item: await Promise.all(items),
    };
};