"use strict";

const url = require("url");

const assureResponse = require("../../shared/assure-response");
const surgeon = require("../../shared/surgeon-utils");
const extractModelNumber = require("../../shared/extract-model-number");

module.exports = function scrapeProduct({ session }) {
	return async function({ data, updateData, expireDependents }) {
		let response = await session.get(data.url);
		assureResponse(response);
		
		let body = response.body.toString();

		let itemData = surgeon({
			name: [ `selectOne "meta[property='og:title']" | readAttr content`, extractModelNumber ],
			manufacturer: `selectMaybeOne "[itemprop='brand']" | text | ignoreEmptyString`,
			description: [
				`selectMaybeOne "meta[name='description']" | readAttr content`,
				// Get rid of the keyword spam...
				(description) => description.split(",")[0]
			],
			image: `selectMaybeOne "meta[property='og:image']" | readAttr content`,
			price: `selectMaybeOne .productView-price .price--withoutTax | text`,
			datasheetURL: [
				`selectMaybeOne ".productView-info a[href^='/content/']" | readAttr href`,
				(relativeURL) => (!/^\/content\/?$/.test(relativeURL))
					? url.resolve("https://focuslcds.com/", relativeURL)
					: null // Ignore when the datasheet URL is *just* /content/, as that means there is no datasheet for this product
			],
			technicalSpecs: [ `selectAny "#tab-description .productView-info-name"`, {
				name: `text`,
				value: `nextUntil ".productView-info-name" ".productView-info-value" | index 0 | text`
			}]
		}, body);
		
		updateData((oldData) => ({
			... oldData,
			itemData: itemData
		}));

		expireDependents();
	};
};