"use strict";

const assert = require("assert");

const assureResponse = require("../../shared/assure-response");

module.exports = function lcscFindCategories(state) {
	let { session } = state;

	return async function ({ createItem }) {
		let response = await session.get("https://wwwapi.lcsc.com/v1/home/category");

		assureResponse(response);
		assert(response.body.length > 0);
		assert(response.statusCode === 200);

		function processCategoryEntries(categories) {
			for (let category of categories) {
				let productCount = category.productNum;
				let pageCount = Math.ceil(productCount / 500);

				// NOTE: We do *not* use the page count indicated by the API, but instead calculate it ourself from the product count. This is because the API-specified page count will cap out at the equivalent of 10k items, even when more pages than that are actually available.
				for (let i = 1; i <= pageCount; i++) {
					createItem({
						id: `lcsc:category:${category.catalogId}:page-${i}`,
						tags: [ "lcsc:category" ],
						data: {
							... category,
							pageNumber: i
						}
					});
				}

				if (category.childCatelogs != null) {
					processCategoryEntries(category.childCatelogs);
				}
			}
		}

		processCategoryEntries(response.body);
	};
};