"use strict";

const express = require("express"),
	sortByName = function (list) {
		let coll_opts = {
				sensitivity: "accent",
				numeric: true,
				caseFirst: "upper",
			},
			field = "name",
			coll = new Intl.Collator({}, coll_opts);
		list.sort((a, b) => {
			if (a[field] && b[field]) {
				return coll.compare(a[field], b[field]);
			}
			return 1;
		});
		return list;
	};
let router = express.Router();

/* GET home page. */
router.get("/", function (req, res) {
	let cards = require("../lib/cards.json"),
		rand_card_num = Math.floor(
			Math.random() * Math.floor(cards.length - 1)
		);

	res.render("index", {
		title: "Welcome",
		query: req.query || {},
		card: cards[rand_card_num],
		random_num: rand_card_num,
	});
});

router.get("/cards/:card_num", (req, res) => {
	req.params.card_num = req.params.card_num || "all";
	let cards = require("../lib/cards.json"),
		links = require("../lib/links.json"),
		filtered = cards.filter(
			(card) =>
				card.num
					.toLowerCase()
					.indexOf(req.params.card_num.toLowerCase()) > -1 ||
				req.params.card_num.toLowerCase() === "all"
		);
	if (filtered.length === 1) {
		let card = filtered[0];
		if (
			links &&
			card.hasOwnProperty("name") &&
			links.hasOwnProperty(card.name)
		) {
			Object.assign(card, links[card.name]);
		}
		res.render("single", {
			title: card.name + " (" + card.num + ")",
			card: card,
		});
	} else {
		filtered = sortByName(filtered);
		res.render("all", { title: "All Cards", cards: filtered });
	}
});

router.get("/cards", function (req, res) {
	res.redirect("/cards/all");
});

module.exports = router;