"use strict";

const { decodeHtml, stripTags, cleanText, extractHtmlAttr, extractFirstImgUrl } = require("../utils/html");
const { normalizeCspc } = require("../utils/sku");
const { extractPriceFromTmbBlock } = require("../utils/woocommerce");

function allowMaltsExcludeGinTequilaMezcal(item) {
	if (item && item.inStock === false) return false;

	const cats = Array.isArray(item?.cats) ? item.cats : [];
	const has = (re) => cats.some((c) => re.test(String(c || "")));

	if (has(/\bgin\b/i)) return false;
	if (has(/\btequila\b/i) || has(/\bmezcal\b/i)) return false;

	return true;
}

function parseProductsMaltsAndGrains(html, ctx) {
	const s = String(html || "");
	const items = [];

	const re = /<li\b[^>]*class=["'][^"']*\bproduct\b[^"']*["'][^>]*>[\s\S]*?<\/li>/gi;
	const blocks = [...s.matchAll(re)].map((m) => m[0] || "");
	ctx.logger?.dbg?.(`parseProductsMaltsAndGrains: li.product blocks=${blocks.length} bytes=${s.length}`);

	const base = `https://${(ctx && ctx.store && ctx.store.host) || "maltsandgrains.store"}/`;

	for (const block of blocks) {
		const classAttr = extractHtmlAttr(block, "class");

		const isOut =
			/\boutofstock\b/i.test(classAttr) ||
			/ast-shop-product-out-of-stock/i.test(block) ||
			/>\s*out of stock\s*</i.test(block);
		if (isOut) continue;

		const cats = [];
		for (const m of String(classAttr || "").matchAll(/\bproduct_cat-([a-z0-9_-]+)\b/gi)) {
			const v = String(m[1] || "")
				.trim()
				.toLowerCase();
			if (v) cats.push(v);
		}

		let href =
			block.match(
				/<a\b[^>]*href=["']([^"']+)["'][^>]*class=["'][^"']*\b(woocommerce-LoopProduct-link|woocommerce-loop-product__link|ast-loop-product__link)\b/i,
			)?.[1] ||
			block.match(
				/<a\b[^>]*class=["'][^"']*\b(woocommerce-LoopProduct-link|woocommerce-loop-product__link|ast-loop-product__link)\b[^"']*["'][^>]*href=["']([^"']+)["']/i,
			)?.[2] ||
			block.match(/<a\b[^>]*href=["']([^"']*\/product\/[^"']+)["']/i)?.[1];

		if (!href) continue;

		let url = "";
		try {
			url = new URL(decodeHtml(href), base).toString();
		} catch {
			continue;
		}
		if (!/^https?:\/\//i.test(url)) continue;

		const mTitle = block.match(
			/<h2\b[^>]*class=["'][^"']*\bwoocommerce-loop-product__title\b[^"']*["'][^>]*>([\s\S]*?)<\/h2>/i,
		);
		const name = mTitle && mTitle[1] ? cleanText(decodeHtml(stripTags(mTitle[1]))) : "";
		if (!name) continue;

		const price = extractPriceFromTmbBlock(block);

		const sku = normalizeCspc(
			block.match(/\bdata-product_sku=["']([^"']+)["']/i)?.[1] ||
				block.match(/\bSKU[:\s]*([0-9]{6})\b/i)?.[1] ||
				"",
		);

		const img = extractFirstImgUrl(block, base);

		items.push({ name, price, url, sku, img, cats, inStock: true });
	}

	const uniq = new Map();
	for (const it of items) uniq.set(it.url, it);
	return [...uniq.values()];
}

function createStore(defaultUa) {
	return {
		key: "maltsandgrains",
		name: "Malts & Grains",
		host: "maltsandgrains.store",
		ua: defaultUa,
		parseProducts: parseProductsMaltsAndGrains,
		categories: [
			{
				key: "all-minus-gin-tequila-mezcal",
				label: "All Spirits",
				startUrl: "https://maltsandgrains.store/shop/page/1/",
				discoveryStartPage: 15,
				allowUrl: allowMaltsExcludeGinTequilaMezcal,
			},
		],
	};
}

module.exports = { createStore };