import {IPage, ISearchItem, ISearchParams, ISearchProvider, Order, Sort, StationId} from "../type";
import {beginToPage, wrappedFetch} from "../lib";
import {HTMLElement, parse} from "node-html-parser";


export class Provider6Toranoana implements ISearchProvider {
	readonly stationId = StationId.Toranoana;

	async search(params: ISearchParams): Promise<IPage> {
		const maxNum = 50;
		const {keyword, begin = 1, category, minPrice, maxPrice, shipping, sort, order} = params;

		const pageNum = beginToPage(begin, maxNum);

		const url = new URL("https://ec.toranoana.jp/joshi_r/ec/app/catalog/list");
		url.searchParams.set("searchWord", keyword);
		url.searchParams.set("currentPage", String(pageNum));
		const warn: string[] = [];
		if (category) {
			url.searchParams.set("commodity_kind_name", category);
		}
		if (shipping === 'free') {
			warn.push(`unsupported shipping`);
		}
		if (minPrice) {
			url.searchParams.set("searchPriceStart", String(minPrice));
		}
		if (maxPrice) {
			url.searchParams.set("searchPriceEnd", String(maxPrice));
		}
		if (sort) {
			if (sort === Sort.Latest) {
				url.searchParams.set("catalogListSortType", '5');
			} else if (sort ===Sort.Price) {
				if (order === Order.Desc) {
					url.searchParams.set("catalogListSortType", '3');
				} else {
					url.searchParams.set("catalogListSortType", '4');
				}
			} else if(sort!==Sort.Default) {
				warn.push(`unsupported sort=${sort}`);
			}
			url.searchParams.set("changeSort", '1');
		}

		const resp = await wrappedFetch(url);

		if (!resp.ok) {
			if (resp.status === 404) {
				return {...params, dataList: [], error: '404 Not Found'};
			}
			return {...params, dataList: [], error: `HTTP error! status: ${resp.status}`};
		}

		// noinspection TypeScriptUnresolvedReference
		const html = await resp.text();
		const result = parseProducts(html, url);

		return {
			srcUrl: url.toString(),
			warning: warn.join(', '),
			begin,
			maxNum,
			pageNum,
			...params,
			...result,
		};
	}
}

function parseProducts(docHtml: string, url: URL): Omit<IPage, keyof ISearchParams> {
	const map = new Map<string, ISearchItem>();
	const doc = parse(docHtml);
	doc.querySelectorAll('#search-result-container li.product-list-item')
		.map(el => parseItem(el, url))
		.forEach(item => item.itemId && map.set(item.itemId, item));

	const totalText = doc.querySelector('#search-result-container .ui-tabs-01_block a[data-selected="true"]')?.textContent;
	const total = totalText ? parseInt(totalText.replace(/\D+/g, '')) : 0;

	return {
		total: Math.max(total || 0, map.size),
		dataList: Array.from(map.values())
	};
}

function parseItem(el: HTMLElement, base: URL): ISearchItem {
	const url = el.querySelector('.product-list-img a')?.getAttribute('href');
	const priceText = el.querySelector('.product-list-price span')?.textContent?.replace(/\D+/g, '');
	const img = el.querySelector('.product-list-img a img')
	return {
		itemId: el.querySelector('input[name="skuCode"]')?.getAttribute('value') || url.replace(/\D+/g, ''),
		url: new URL(url, base).toString(),
		image: {
			imageUrl: img?.getAttribute('src'),
			alt: img?.getAttribute('alt'),
		},
		name: el.querySelector('.product-list-title')?.textContent?.trim(),
		price: priceText ? parseInt(priceText) : undefined,
	};
}