Add authenticated payload API server

2026-10-24 19:50:18 +02:00 · 2026-10-24 19:50:18 +02:00 · 1ed4e759b9
commit 1ed4e759b9
parent e8a967116c
15 changed files with 1289 additions and 0 deletions
--- a/.env.example
+++ b/.env.example
@ -0,0 +1,5 @@
+HOST_PORT=8152
+PUBLIC_DOMAIN=http://localhost
+API_BEARER_TOKEN=replace-with-a-long-random-token
+WIFI_SSID=replace-with-your-ssid
+WIFI_PASSWORD=replace-with-your-password
--- a/.gitignore
+++ b/.gitignore
@ -11,6 +11,10 @@ build/
 .arduino15/
 sketch.yaml
 arduino_secrets.h
+.env
+
+# Local server data
+server/data/

 # Editors and operating systems
 .vscode/
--- a/README.md
+++ b/README.md
@ -3,6 +3,9 @@
 En samling af Arduino-sketches, eksperimenter og profiler til forskellige
 boards.

+Repoet indeholder desuden en Docker Compose-baseret server til REST-payloads
+og et aktivitetsdashboard. Se [`server/`](server/README.md).
+
 Repoet registrerer både Arduino-boards og de eksterne input/output-enheder, der
 tilsluttes dem. Boardprofiler ligger i `boards/`, enhedsprofiler i `devices/`,
 og hver enhedsprofil linker til de sketches, hvor enheden bruges.
--- a/compose.yaml
+++ b/compose.yaml
@ -0,0 +1,30 @@
+services:
+  gateway:
+    image: nginx:1.27-alpine
+    restart: unless-stopped
+    ports:
+      - "${HOST_PORT:-8152}:80"
+    volumes:
+      - ./server/nginx.conf:/etc/nginx/conf.d/default.conf:ro
+    depends_on:
+      app:
+        condition: service_healthy
+
+  app:
+    build:
+      context: ./server
+    restart: unless-stopped
+    environment:
+      API_BEARER_TOKEN: ${API_BEARER_TOKEN}
+      PUBLIC_DOMAIN: ${PUBLIC_DOMAIN:-http://localhost}
+      HOST_PORT: ${HOST_PORT:-8152}
+      DATA_FILE: /data/payloads.json
+    volumes:
+      - server-data:/data
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:3000/api/health"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+volumes:
+  server-data:
--- a/server/.dockerignore
+++ b/server/.dockerignore
@ -0,0 +1,3 @@
+node_modules
+npm-debug.log
+data
--- a/server/Dockerfile
+++ b/server/Dockerfile
@ -0,0 +1,11 @@
+FROM node:22-alpine
+
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --omit=dev
+COPY src ./src
+COPY public ./public
+
+ENV NODE_ENV=production
+EXPOSE 3000
+CMD ["node", "src/server.js"]
--- a/server/README.md
+++ b/server/README.md
@ -0,0 +1,51 @@
+# Arduino Playground-server
+
+Compose-stacken leverer:
+
+- webdashboard på `/`;
+- REST API på `/api`.
+
+## Start
+
+Opret den lokale `.env` fra WiFi-status-sketchens secrets og start stacken:
+
+```powershell
+npm --prefix server run configure
+docker compose up -d --build
+```
+
+Med standardopsætningen åbnes dashboardet på `http://localhost:8152`.
+
+## API
+
+Læsning er offentlig:
+
+```text
+GET /api/health
+GET /api/activity
+GET /api/payloads
+GET /api/payloads/:id
+```
+
+Skrivning kræver `Authorization: Bearer <API_BEARER_TOKEN>`:
+
+```text
+POST   /api/payloads
+PATCH  /api/payloads/:id
+DELETE /api/payloads/:id
+```
+
+Eksempel på body til `POST`:
+
+```json
+{
+  "topic": "r4/status",
+  "payload": {
+    "temperature": 22.4,
+    "online": true
+  }
+}
+```
+
+WiFi-oplysningerne ligger kun i den lokale `.env` til brug for den kommende
+board-sketch. De sendes ikke til browseren eller API-klienter.
--- a/server/nginx.conf
+++ b/server/nginx.conf
@ -0,0 +1,12 @@
+server {
+  listen 80;
+  server_name _;
+
+  location / {
+    proxy_pass http://app:3000;
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+  }
+}
--- a/server/package-lock.json
+++ b/server/package-lock.json
@ -0,0 +1,858 @@
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+  "name": "arduino-playground-server",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
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+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    }
+  }
+}
--- a/server/package.json
+++ b/server/package.json
@ -0,0 +1,14 @@
+{
+  "name": "arduino-playground-server",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "configure": "node scripts/configure-env.js",
+    "start": "node src/server.js",
+    "test": "node --test"
+  },
+  "dependencies": {
+    "express": "5.3.0"
+  }
+}
--- a/server/public/app.js
+++ b/server/public/app.js
@ -0,0 +1,48 @@
+const elements = {
+  health: document.querySelector("#health"),
+  payloadCount: document.querySelector("#payloadCount"),
+  apiCount: document.querySelector("#apiCount"),
+  serverCount: document.querySelector("#serverCount"),
+  activity: document.querySelector("#activity"),
+  payloads: document.querySelector("#payloads"),
+  refresh: document.querySelector("#refresh"),
+};
+
+function escapeHtml(value) {
+  return String(value).replace(/[&<>'"]/g, (character) => ({
+    "&": "&amp;", "<": "&lt;", ">": "&gt;", "'": "&#39;", '"': "&quot;",
+  })[character]);
+}
+
+async function refresh() {
+  try {
+    const [healthResponse, payloadResponse, activityResponse] = await Promise.all([
+      fetch("/api/health"), fetch("/api/payloads"), fetch("/api/activity"),
+    ]);
+    if (![healthResponse, payloadResponse, activityResponse].every((response) => response.ok)) {
+      throw new Error("Serveren returnerede en fejl");
+    }
+    const [health, payloads, activity] = await Promise.all([
+      healthResponse.json(), payloadResponse.json(), activityResponse.json(),
+    ]);
+    elements.health.textContent = "API online";
+    elements.health.className = "status online";
+    elements.payloadCount.textContent = payloads.length;
+    elements.apiCount.textContent = activity.filter((event) => event.source === "api").length;
+    elements.serverCount.textContent = activity.filter((event) => event.source === "server").length;
+    elements.payloads.textContent = JSON.stringify(payloads, null, 2);
+    elements.activity.innerHTML = activity.slice(0, 30).map((event) => `
+      <div class="event">
+        <span class="source">${escapeHtml(event.source)}</span>
+        <span class="time">${new Date(event.timestamp).toLocaleTimeString("da-DK")}</span>
+        <span class="detail"><strong>${escapeHtml(event.action)}</strong> ${escapeHtml(JSON.stringify(event.detail))}</span>
+      </div>`).join("") || "<p>Ingen hændelser endnu.</p>";
+  } catch (error) {
+    elements.health.textContent = "Server offline";
+    elements.health.className = "status";
+  }
+}
+
+elements.refresh.addEventListener("click", refresh);
+refresh();
+setInterval(refresh, 3000);
--- a/server/public/index.html
+++ b/server/public/index.html
@ -0,0 +1,44 @@
+<!doctype html>
+<html lang="da">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Arduino Playground</title>
+    <link rel="stylesheet" href="/styles.css">
+  </head>
+  <body>
+    <main>
+      <header>
+        <div>
+          <p class="eyebrow">Arduino UNO R4 WiFi</p>
+          <h1>Serveraktivitet</h1>
+          <p>Live overblik over REST API-trafik fra Arduino-boardet.</p>
+        </div>
+        <div id="health" class="status">Forbinder…</div>
+      </header>
+
+      <section class="metrics">
+        <article><span>Gemte payloads</span><strong id="payloadCount">–</strong></article>
+        <article><span>API-hændelser</span><strong id="apiCount">–</strong></article>
+        <article><span>Serverhændelser</span><strong id="serverCount">–</strong></article>
+      </section>
+
+      <section class="panel">
+        <div class="panel-heading">
+          <div><p class="eyebrow">Aktivitet</p><h2>Seneste hændelser</h2></div>
+          <button id="refresh" type="button">Opdatér</button>
+        </div>
+        <div id="activity" class="activity"></div>
+      </section>
+
+      <section class="panel">
+        <div class="panel-heading">
+          <div><p class="eyebrow">API</p><h2>Payloads</h2></div>
+          <code>GET /api/payloads</code>
+        </div>
+        <pre id="payloads">Indlæser…</pre>
+      </section>
+    </main>
+    <script src="/app.js"></script>
+  </body>
+</html>
--- a/server/public/styles.css
+++ b/server/public/styles.css
@ -0,0 +1,34 @@
+:root {
+  color-scheme: dark;
+  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
+  background: #07110e;
+  color: #e5f7ef;
+}
+* { box-sizing: border-box; }
+body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top right, #123d32, transparent 36%), #07110e; }
+main { width: min(1100px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0; }
+header, .panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
+h1 { margin: 4px 0 8px; font-size: clamp(2rem, 6vw, 4.5rem); letter-spacing: -.055em; }
+h2 { margin: 2px 0; }
+p { color: #91a99f; }
+.eyebrow { color: #62e6ae; margin: 0; text-transform: uppercase; font-size: .72rem; font-weight: 800; letter-spacing: .16em; }
+.status, button, code { border: 1px solid #285244; background: #10231d; border-radius: 999px; padding: 10px 14px; }
+.status.online { color: #62e6ae; }
+.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 36px 0 16px; }
+.metrics article, .panel { border: 1px solid #1d3a31; background: rgba(11, 28, 23, .88); border-radius: 18px; }
+.metrics article { padding: 22px; }
+.metrics span { color: #91a99f; display: block; font-size: .85rem; }
+.metrics strong { display: block; margin-top: 8px; font-size: 2.2rem; }
+.panel { padding: 24px; margin-top: 16px; }
+button { color: #e5f7ef; cursor: pointer; }
+.activity { margin-top: 18px; display: grid; gap: 8px; }
+.event { display: grid; grid-template-columns: 85px 110px 1fr; gap: 12px; padding: 12px 0; border-top: 1px solid #183129; }
+.source { color: #62e6ae; text-transform: uppercase; font-size: .72rem; font-weight: 800; }
+.time { color: #6f887e; font-variant-numeric: tabular-nums; }
+pre { overflow: auto; color: #bfead8; background: #07110e; padding: 18px; border-radius: 12px; }
+@media (max-width: 650px) {
+  header, .panel-heading { align-items: flex-start; flex-direction: column; }
+  .metrics { grid-template-columns: 1fr; }
+  .event { grid-template-columns: 70px 1fr; }
+  .event .detail { grid-column: 1 / -1; }
+}
--- a/server/scripts/configure-env.js
+++ b/server/scripts/configure-env.js
@ -0,0 +1,33 @@
+import crypto from "node:crypto";
+import fs from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const serverDir = path.dirname(path.dirname(fileURLToPath(import.meta.url)));
+const repositoryRoot = path.dirname(serverDir);
+const secretsPath = path.join(
+  repositoryRoot,
+  "sketches",
+  "arduino-uno-r4-wifi",
+  "wifi_matrix_status",
+  "arduino_secrets.h",
+);
+
+const secrets = await fs.readFile(secretsPath, "utf8");
+const readDefine = (name) => {
+  const match = secrets.match(new RegExp(`^#define\\s+${name}\\s+"((?:\\\\.|[^"])*)"`, "m"));
+  if (!match) throw new Error(`${name} was not found in ${secretsPath}`);
+  return JSON.parse(`"${match[1]}"`);
+};
+
+const env = [
+  "HOST_PORT=8152",
+  "PUBLIC_DOMAIN=http://localhost",
+  `API_BEARER_TOKEN=${crypto.randomBytes(32).toString("base64url")}`,
+  `WIFI_SSID=${JSON.stringify(readDefine("SECRET_SSID"))}`,
+  `WIFI_PASSWORD=${JSON.stringify(readDefine("SECRET_PASS"))}`,
+  "",
+].join("\n");
+
+await fs.writeFile(path.join(repositoryRoot, ".env"), env, { mode: 0o600 });
+console.log("Created .env with HOST_PORT=8152, PUBLIC_DOMAIN=http://localhost and local secrets.");
--- a/server/src/server.js
+++ b/server/src/server.js
@ -0,0 +1,139 @@
+import crypto from "node:crypto";
+import fs from "node:fs/promises";
+import path from "node:path";
+import express from "express";
+
+const port = 3000;
+const dataFile = process.env.DATA_FILE ?? "/data/payloads.json";
+const bearerToken = process.env.API_BEARER_TOKEN ?? "";
+const publicDir = path.resolve("public");
+const activity = [];
+let payloads = [];
+
+function record(source, action, detail = {}) {
+  activity.unshift({
+    id: crypto.randomUUID(),
+    timestamp: new Date().toISOString(),
+    source,
+    action,
+    detail,
+  });
+  activity.splice(200);
+}
+
+async function loadPayloads() {
+  try {
+    payloads = JSON.parse(await fs.readFile(dataFile, "utf8"));
+  } catch (error) {
+    if (error.code !== "ENOENT") throw error;
+    await persistPayloads();
+  }
+}
+
+async function persistPayloads() {
+  await fs.mkdir(path.dirname(dataFile), { recursive: true });
+  const temporaryFile = `${dataFile}.tmp`;
+  await fs.writeFile(temporaryFile, JSON.stringify(payloads, null, 2));
+  await fs.rename(temporaryFile, dataFile);
+}
+
+function requireBearer(req, res, next) {
+  if (!bearerToken) {
+    return res.status(503).json({ error: "API_BEARER_TOKEN is not configured" });
+  }
+  const supplied = req.get("authorization")?.replace(/^Bearer\s+/i, "") ?? "";
+  const expected = Buffer.from(bearerToken);
+  const actual = Buffer.from(supplied);
+  if (expected.length !== actual.length || !crypto.timingSafeEqual(expected, actual)) {
+    record("api", "auth_failed", { method: req.method, path: req.path });
+    return res.status(401).json({ error: "A valid bearer token is required" });
+  }
+  next();
+}
+
+const app = express();
+app.disable("x-powered-by");
+app.use(express.json({ limit: "64kb" }));
+app.use((req, res, next) => {
+  if (req.path.startsWith("/api/") && !["/api/activity", "/api/health"].includes(req.path)) {
+    res.on("finish", () => {
+      record("api", "request", { method: req.method, path: req.path, status: res.statusCode });
+    });
+  }
+  next();
+});
+
+app.get("/api/health", (_req, res) => {
+  res.json({ status: "ok", timestamp: new Date().toISOString() });
+});
+
+app.get("/api/payloads", (_req, res) => res.json(payloads));
+
+app.get("/api/payloads/:id", (req, res) => {
+  const payload = payloads.find((item) => item.id === req.params.id);
+  if (!payload) return res.status(404).json({ error: "Payload not found" });
+  res.json(payload);
+});
+
+app.post("/api/payloads", requireBearer, async (req, res, next) => {
+  try {
+    const now = new Date().toISOString();
+    const payload = {
+      id: crypto.randomUUID(),
+      topic: typeof req.body.topic === "string" ? req.body.topic : "r4/api",
+      payload: req.body.payload ?? req.body,
+      createdAt: now,
+      updatedAt: now,
+    };
+    payloads.push(payload);
+    await persistPayloads();
+    record("api", "created", { id: payload.id, topic: payload.topic });
+    res.status(201).json(payload);
+  } catch (error) {
+    next(error);
+  }
+});
+
+app.patch("/api/payloads/:id", requireBearer, async (req, res, next) => {
+  try {
+    const index = payloads.findIndex((item) => item.id === req.params.id);
+    if (index === -1) return res.status(404).json({ error: "Payload not found" });
+    payloads[index] = {
+      ...payloads[index],
+      ...(typeof req.body.topic === "string" ? { topic: req.body.topic } : {}),
+      ...(Object.hasOwn(req.body, "payload") ? { payload: req.body.payload } : {}),
+      updatedAt: new Date().toISOString(),
+    };
+    await persistPayloads();
+    record("api", "updated", { id: req.params.id, topic: payloads[index].topic });
+    res.json(payloads[index]);
+  } catch (error) {
+    next(error);
+  }
+});
+
+app.delete("/api/payloads/:id", requireBearer, async (req, res, next) => {
+  try {
+    const index = payloads.findIndex((item) => item.id === req.params.id);
+    if (index === -1) return res.status(404).json({ error: "Payload not found" });
+    const [removed] = payloads.splice(index, 1);
+    await persistPayloads();
+    record("api", "deleted", { id: removed.id, topic: removed.topic });
+    res.status(204).end();
+  } catch (error) {
+    next(error);
+  }
+});
+
+app.get("/api/activity", (_req, res) => res.json(activity));
+
+app.use(express.static(publicDir));
+app.get(/.*/, (_req, res) => res.sendFile(path.join(publicDir, "index.html")));
+
+app.use((error, req, res, _next) => {
+  record("api", "error", { method: req.method, path: req.path, message: error.message });
+  res.status(error.type === "entity.parse.failed" ? 400 : 500).json({ error: error.message });
+});
+
+await loadPayloads();
+app.listen(port, () => record("server", "started", { port }));