"use strict";

const express = require("express"),
	sortByField = function (field, order, list) {
		field = field || "num";
		order = order || "asc";
		let coll_opts = {
				sensitivity: "accent",
				numeric: true,
				caseFirst: "upper",
			},
			coll = new Intl.Collator({}, coll_opts);
		list.sort((a, b) => {
			if (a[field] && b[field]) {
				let res =
					coll.compare(a[field], b[field]) *
					(order !== "asc" ? -1 : 1);
				if (res === 0 && field !== "name") {
					return (
						coll.compare(a["name"], b["name"]) *
						(order !== "asc" ? -1 : 1)
					);
				}
				return res;
			}
			return 1;
		});
		return list;
	};

let router = express.Router();

/* GET search results page. */
router.get("/", function (req, res) {
	req.query = req.query || {};
	let filtered = [];
	if (Object.keys(req.query).length > 0) {
		let q = req.query,
			cards = require("../lib/cards.json");

		q.search_in = q.search_in || [];
		q.search_for = (q.search_for || "").trim().toLowerCase();
		q.pantheons = q.pantheons || [];
		q.pantheons = Array.isArray(q.pantheons) ? q.pantheons : [q.pantheons];
		q.elements = q.elements || [];
		q.elements = Array.isArray(q.elements) ? q.elements : [q.elements];
		q.types = q.types || [];
		q.types = Array.isArray(q.types) ? q.types : [q.types];
		q.races = q.races || [];
		q.races = Array.isArray(q.races) ? q.races : [q.races];
		q.releases = q.releases || [];
		q.releases = Array.isArray(q.releases) ? q.releases : [q.releases];
		q.sort_by = (q.sort_by || "num").trim().toLowerCase();
		q.sort_order = (q.sort_order || "asc").trim().toLowerCase();

		filtered = cards.filter((card) => {
			if (q.search_in.length > 0 && q.search_for.trim() !== "") {
				if (
					!(
						(q.search_in.indexOf("name") > -1 &&
							(card.name.toLowerCase().indexOf(q.search_for) >
								-1 ||
								card.name_ang.indexOf(q.search_for) > -1)) ||
						(q.search_in.indexOf("ability") > -1 &&
							(card.ability_name
								.toLowerCase()
								.indexOf(q.search_for) > -1 ||
								card.ability_text
									.toLowerCase()
									.indexOf(q.search_for) > -1))
					)
				) {
					return false;
				}
			}

			if (q.pantheons.length > 0 && card.pantheon) {
				let has_pantheon = false;
				for (let i = 0; i < q.pantheons.length; i++) {
					if (card.pantheon_idx.indexOf(q.pantheons[i]) > -1) {
						has_pantheon = true;
					}
				}
				if (!has_pantheon) {
					return false;
				}
			}

			if (q.elements.length > 0) {
				let has_element = false;
				for (let i = 0; i < q.elements.length; i++) {
					if (card.element_idx.indexOf(q.elements[i]) > -1) {
						has_element = true;
					}
				}
				if (!has_element) {
					return false;
				}
			}

			if (q.races.length > 0 && card.race) {
				let has_race = false;
				for (let i = 0; i < q.races.length; i++) {
					if (card.race_idx.indexOf(q.races[i]) > -1) {
						has_race = true;
					}
				}
				if (!has_race) {
					return false;
				}
			}

			if (q.types.length > 0) {
				let has_type = false;
				for (let i = 0; i < q.types.length; i++) {
					if (card.type_idx.indexOf(q.types[i]) > -1) {
						has_type = true;
					}
				}
				if (!has_type) {
					return false;
				}
			}

			if (q.releases.length > 0) {
				let has_release = false;
				for (let i = 0; i < q.releases.length; i++) {
					if (card.num.toLowerCase().indexOf(q.releases[i]) > -1) {
						has_release = true;
					}
				}
				if (!has_release) {
					return false;
				}
			}

			return true;
		});
		if (q.sort_by !== "name") {
			filtered = sortByField("name", q.sort_order, filtered);
		}
		filtered = sortByField(q.sort_by, q.sort_order, filtered);
	}

	res.render("search", {
		title: `Search Results (${filtered.length})`,
		query: req.query,
		cards: filtered,
	});
});

module.exports = router;