commit 734b8bd9227d22d6eac30984c0247cf4b9baccb4 Author: yourfriendoss Date: Fri Oct 31 15:14:14 2025 +0200 first commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a14702c --- /dev/null +++ b/.gitignore @@ -0,0 +1,34 @@ +# dependencies (bun install) +node_modules + +# output +out +dist +*.tgz + +# code coverage +coverage +*.lcov + +# logs +logs +_.log +report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json + +# dotenv environment variable files +.env +.env.development.local +.env.test.local +.env.production.local +.env.local + +# caches +.eslintcache +.cache +*.tsbuildinfo + +# IntelliJ based IDEs +.idea + +# Finder (MacOS) folder config +.DS_Store diff --git a/README.md b/README.md new file mode 100644 index 0000000..6df85c9 --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +# worst_analytics_ever + +To install dependencies: + +```bash +bun install +``` + +To run: + +```bash +bun run +``` + +This project was created using `bun init` in bun v1.2.13. 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file mode 100644 index 0000000..55edc4a --- /dev/null +++ b/package.json @@ -0,0 +1,27 @@ +{ + "name": "worst_analytics_ever", + "private": true, + "devDependencies": { + "@types/bun": "latest" + }, + "peerDependencies": { + "typescript": "^5" + }, + "scripts": { + "run": "bun run src/server.ts" + }, + "dependencies": { + "@types/body-parser": "^1.19.6", + "@types/cors": "^2.8.19", + "@types/express": "^5.0.5", + "@types/geoip-lite": "^1.4.4", + "@types/uglify-js": "^3.17.5", + "body-parser": "^2.2.0", + "cors": "^2.8.5", + "express": "^5.1.0", + "geoip-lite": "^1.4.10", + "prom-client": "^15.1.3", + "ua-parser-js": "^2.0.6", + "uglify-js": "^3.19.3" + } +} diff --git a/src/clientAnalytics.js b/src/clientAnalytics.js new file mode 100644 index 0000000..52d82bf --- /dev/null +++ b/src/clientAnalytics.js @@ -0,0 +1,127 @@ +(() => { + const API = "some_misc_string"; // this is replaced when JS is requested, do not worry + const SITE = "some_site_string"; // same with this + console.log("fuckass_analytics v1 " + API + " on site " + SITE) + const SESSION_ID = crypto.randomUUID(); + const USER_ID = + localStorage.getItem("analytics_uid") || + (() => { + const id = crypto.randomUUID(); + localStorage.setItem("analytics_uid", id); + return id; + })(); + + const common = { + userId: USER_ID, + sessionId: SESSION_ID, + site: SITE, + url: location.href, + title: document.title, + referrer: document.referrer || null, + lang: navigator.language, + tz: Intl.DateTimeFormat().resolvedOptions().timeZone, + screen: `${screen.width}x${screen.height}`, + ua: navigator.userAgent, + platform: navigator.platform, + }; + + const send = (type, data = {}) => { + (async () => { + const res = await fetch(API + "/some-cool-endpoint", { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ type, t: Date.now(), ...common, ...data }), + keepalive: true, + }); + console.log(res) + })(); + }; + + const start = performance.now(); + const urlParams = new URLSearchParams(location.search); + const utm = Object.fromEntries( + [...urlParams.entries()].filter(([k]) => k.startsWith("utm_")) + ); + + send("pageview", { utm }); + + let maxScroll = 0; + window.addEventListener("scroll", () => { + const percent = + (window.scrollY + window.innerHeight) / document.body.scrollHeight; + maxScroll = Math.max(maxScroll, percent); + }); + + document.addEventListener("click", (e) => { + const el = e.target.closest("button,a,input,[data-track]"); + if (!el) return; + send("click", { + tag: el.tagName, + label: + el.getAttribute("data-track") || + el.textContent?.trim()?.slice(0, 60) || + el.id || + el.getAttribute("href") || + el.name || + "", + path: location.pathname, + }); + }); + + document.addEventListener("submit", (e) => { + const f = e.target; + const fields = [...f.elements] + .filter((x) => x.name) + .map((x) => x.name); + send("form_submit", { fields, path: location.pathname }); + }); + + document.addEventListener( + "play", + (e) => + send("media_play", { tag: e.target.tagName, src: e.target.currentSrc }), + true + ); + document.addEventListener( + "pause", + (e) => + send("media_pause", { tag: e.target.tagName, src: e.target.currentSrc }), + true + ); + + window.trackEvent = (name, props = {}) => send("custom", { name, ...props }); + + if ("PerformanceObserver" in window) { + const vitals = {}; + + const obs = (entryType, key) => + new PerformanceObserver((list) => { + for (const entry of list.getEntries()) { + if (entryType === "layout-shift" && !entry.hadRecentInput) { + vitals.CLS = (vitals.CLS || 0) + entry.value; + } else if (entryType === "largest-contentful-paint") { + vitals.LCP = entry.renderTime || entry.loadTime; + } else if (entryType === "first-input") { + vitals.FID = entry.processingStart - entry.startTime; + } + } + }).observe({ type: entryType, buffered: true }); + + try { + obs("layout-shift"); + obs("largest-contentful-paint"); + obs("first-input"); + } catch {} + + window.addEventListener("beforeunload", () => { + if (Object.keys(vitals).length) send("web_vitals", vitals); + }); + } + + window.addEventListener("beforeunload", () => { + send("session_end", { + duration_ms: performance.now() - start, + scroll_depth: Math.round(maxScroll * 100), + }); + }) +})(); diff --git a/src/server.ts b/src/server.ts new file mode 100644 index 0000000..21a5395 --- /dev/null +++ b/src/server.ts @@ -0,0 +1,160 @@ +import express, { type Request } from "express"; +import bodyParser from "body-parser"; +import geoip from "geoip-lite"; +import {UAParser} from "ua-parser-js"; +import client from "prom-client"; +import cors from "cors"; +import { readFileSync } from "node:fs"; +import { minify } from "uglify-js"; +const app = express(); + +const clientJS = + minify(readFileSync("src/clientAnalytics.js", "utf8")).code; + +app.use(bodyParser.json({ limit: "512kb" })); +app.use( + cors() +); + +app.options("*path", (req, res) => { + res.set("Access-Control-Allow-Origin", "*"); + res.set("Access-Control-Allow-Methods", "GET,POST,OPTIONS"); + res.set("Access-Control-Allow-Headers", "Content-Type"); + res.sendStatus(204); +}); + +const register = new client.Registry(); +client.collectDefaultMetrics({ register }); + +const eventCounter = new client.Counter({ + name: "web_event_total", + help: "Aggregated event counts", + labelNames: ["site", "type", "country", "device", "browser", "os"], +}); + +const durationHist = new client.Histogram({ + name: "web_session_duration_seconds", + help: "Session durations", + labelNames: ["site"], + buckets: [1, 5, 15, 30, 60, 120, 300, 600, 1800, 3600], +}); +const scrollHist = new client.Histogram({ + name: "web_scroll_depth_percent", + help: "Scroll depth percentages", + labelNames: ["site"], + buckets: [0, 25, 50, 75, 100], +}); +const clsHist = new client.Histogram({ + name: "web_vitals_cls", + help: "Cumulative Layout Shift", + labelNames: ["site"], + buckets: [0, 0.1, 0.25, 0.5, 1], +}); +const lcpHist = new client.Histogram({ + name: "web_vitals_lcp_seconds", + help: "Largest Contentful Paint (s)", + labelNames: ["site"], + buckets: [0.5, 1, 2.5, 4, 6, 10], +}); +const fidHist = new client.Histogram({ + name: "web_vitals_fid_ms", + help: "First Input Delay (ms)", + labelNames: ["site"], + buckets: [0, 10, 50, 100, 200, 500], +}); +const outboundCounter = new client.Counter({ + name: "web_outgoing_clicks_total", + help: "Outgoing link clicks by target domain", + labelNames: ["site", "target_domain"], +}); +register.registerMetric(outboundCounter); +register.registerMetric(eventCounter); +register.registerMetric(durationHist); +register.registerMetric(scrollHist); +register.registerMetric(clsHist); +register.registerMetric(lcpHist); +register.registerMetric(fidHist); + +function enrich(req: Request, uaString: string) { + let xfr = req.headers["x-forwarded-for"]; + if (Array.isArray(xfr)) xfr = xfr.join("."); + + const ip = + xfr?.split(",")[0] || + req.socket.remoteAddress || + "unknown"; + + const geo = geoip.lookup(ip); + const ua = new UAParser(uaString || "").getResult(); + return { + country: geo?.country || process.env.FAKE_COUNTRY || "??", + device: ua.device.type || "desktop", + browser: ua.browser.name || "Unknown", + os: ua.os.name || "Unknown", + }; +} + +app.post("/some-cool-endpoint", (req, res) => { + const e = req.body; + console.log(e) + const { country, device, browser, os } = enrich(req, e.ua); + let site = e.site; + if(site === undefined) { + try { + site = new URL(e.url).hostname; + } catch (err) { + } + } + + eventCounter.labels(site, e.type, country, device, browser, os).inc(); + + if (e.type === "click" && e.label) { + try { + const targetDomain = new URL(e.label).hostname; + outboundCounter.labels(site, targetDomain).inc(); + } catch (err) { + } + } + + if (e.type === "session_end" && e.duration_ms) + durationHist.labels(site).observe(e.duration_ms / 1000); + if (e.type === "session_end" && e.scroll_depth) + scrollHist.labels(site).observe(e.scroll_depth); + + if (e.type === "web_vitals") { + if (e.CLS) clsHist.labels(site).observe(e.CLS); + if (e.LCP) lcpHist.labels(site).observe(e.LCP / 1000); + if (e.FID) fidHist.labels(site).observe(e.FID); + } + + res.sendStatus(204); +}); +app.get("/js", async (req, res) => { + const partial_url = req.protocol + "://" + req.get("host"); + + const url = new URL(partial_url + req.url); + const id = url.searchParams.get("site") || url.hostname; + + res.set('Content-Type', 'text/javascript') + res.end(clientJS.replace( + "some_misc_string", partial_url + ).replace("some_site_string", id) + ) +}) +app.get("/metrics", async (req, res) => { + let xfr = req.headers["x-forwarded-for"]; + if (Array.isArray(xfr)) xfr = xfr.join("."); + + const ip = + xfr?.split(",")[0] || + req.socket.remoteAddress || + "unknown"; + if(process.env.DEBUG) console.log("metrics required by " + ip) + res.set("Content-Type", register.contentType); + res.end(await register.metrics()); +}); + +const port = process.env.PORT || 8080; +app.listen(port, () => + console.log(`Analytics collector running on http://localhost:${port}`) +); diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..9c62f74 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,28 @@ +{ + "compilerOptions": { + // Environment setup & latest features + "lib": ["ESNext"], + "target": "ESNext", + "module": "ESNext", + "moduleDetection": "force", + "jsx": "react-jsx", + "allowJs": true, + + // Bundler mode + "moduleResolution": "bundler", + "allowImportingTsExtensions": true, + "verbatimModuleSyntax": true, + "noEmit": true, + + // Best practices + "strict": true, + "skipLibCheck": true, + "noFallthroughCasesInSwitch": true, + "noUncheckedIndexedAccess": true, + + // Some stricter flags (disabled by default) + "noUnusedLocals": false, + "noUnusedParameters": false, + "noPropertyAccessFromIndexSignature": false + } +}