source ⟩ app ⟩ routes ⟩ stats.js

import { readFileSync } from "fs";

import express from "express";

import grimm from "../grimm.js";

const router = express.Router();

const count = (list, sort) => {
	let counted = [...new Set(list)].map(si => ({
		name: si,
		count: list.filter(li => li === si).length
	}));

	return sort ? counted.sort((a, b) => b.count - a.count) : counted;
};

router.get("/", (req, res, next) => {
	const uiLang = req.user.prefs.uiLang || "en";

	let analytics = readFileSync("analytics/access.log", { encoding: "utf8" })
		.split("\n")
		.map(visit => visit.split(" "))
		.map(visit => [...visit.slice(0, 3), visit.slice(3).join(" ")])
		.filter(
			visit =>
				visit.length >= 3 &&
				!visit[1].match(
					/^\/garden(\/tagged|.*?\/feed|.*?\/page\/)|^https|post-comment|wp-admin|new\/feed\.xml/
				) &&
				!visit[3].match(/\+|https?\:/)
		)
		.map(visit => ({
			time: visit[0],
			page: visit[1].replace(/\?.*/, "").replace(/(.)\/$/, "$1"),
			referrer:
				visit[2].match(
					/^-$|satyrs\.eu|marijn\.uk|satyrwoud|marijnflorence|vpn|binance/
				) || !visit[2].match(/^http/)
					? null
					: visit[2]
							.replace(/\?.*/, "")
							.replace(/https?:\/\//, "")
							.replace(/^www\./, "")
							.replace(/^([^\/]*)\/$/, "$1")
		}));

	let stats = {
		dailyViews: count(
			analytics.map(v => v.time.slice(0, 10)),
			false
		),
		popularPages: count(
			analytics.map(v => v.page),
			true
		),
		backlinks: count(
			analytics.filter(v => v.referrer).map(v => v.referrer),
			true
		)
	};
	stats.maxDailyViews = Math.max(...stats.dailyViews.map(v => v.count));

	return res.render("../admin/stats/stats", {
		stats: stats,
		grimm: grimm,
		tr: grimm.translator(uiLang),
		lang: uiLang
	});
});

export default router;