"use strict";

const syncpipe = require("syncpipe");
const url = require("url");

const assureResponse = require("../../shared/assure-response");
const surgeon = require("../../shared/surgeon-utils");
const uniqueArray = require("../../shared/unique-array");

module.exports = function findCategories({ session }) {
	return async function({ createItem }) {
		let response = await session.get("https://focuslcds.com/");
		assureResponse(response);
	
		let urls = syncpipe(null, [
			_ => surgeon(`selectMany ".category-list a" | readAttr href`, response.body.toString()),
			_ => uniqueArray(_),
			_ => _.filter((relativeURL) => relativeURL !== ""),
			_ => _.map((relativeURL) => url.resolve("https://focuslcds.com/", relativeURL))
		]);

		for (let url of urls) {
			createItem({
				id: `focus-lcds:category:${url}`,
				tags: [ "focus-lcds:category" ],
				data: { url: url }
			});
		}
	};
};