merge branch 'develop' into 'main' - Release v1.7.30

- Add tests/unit/utils/poller.test.js covering background polling lock, registry, error recovery, webhook bypasses, and global fallbacks
- Add tests/integration/rateLimiter.test.js verifying 429 response rate-limiting in an isolated production environment
- Add tests/integration/ombiDecoration.test.js covering deep links and admin role checks
- Expand tests/frontend/ui/downloads.test.js covering createServiceIcons() and createClientLogo() fallbacks
- Expand tests/integration/dashboard.test.js verifying SSE heartbeats, payload schema contract, and listener cleanup on client disconnect

CHANGELOG.md

@@ -4,11 +4,40 @@ All notable changes to this project will be documented in this file.
 Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.7.30] - 2026-05-28
+
+### Added
+
+- **Testing Scope Expansion (Issue #60)** — Significantly expanded unit and integration test coverage targeting the background polling engine, rate limiting, and frontend rendering logic to secure core behaviors.
+  - **Background Poller Tests (`poller.test.js`)**: Implemented robust unit tests verifying concurrency guards, subscriber registries (`onPollComplete`/`offPollComplete`), graceful error recovery, webhook bypasses, and global fallbacks using a hybrid testing approach with Vitest fake timers.
+  - **Isolated Rate Limiting (`rateLimiter.test.js`)**: Designed a dedicated integration test that unsets `SKIP_RATE_LIMIT` and asserts `429 Too Many Requests` responses under rapid login requests while maintaining test suite stability.
+  - **Active Downloads Decoration (`ombiDecoration.test.js`)**: Covered deep-link generation (`arrLink`) for active download matching under admin and non-admin states.
+  - **Frontend UI Rendering (`downloads.test.js`)**: Expanded coverage for the downloads rendering engine, specifically targeting conditional administrative icon construction (`createServiceIcons()`) and client logo loading fallbacks (`createClientLogo()`).
+  - **SSE Connection Lifecycle & Payload Contracts (`dashboard.test.js`)**: Added stream tests checking Server-Sent Event heartbeat emission, payload schema schemas, and client close event listeners (`req.on('close')`) to verify callback cleanup and prevent connection-based memory leaks.
+
+## [1.7.29] - 2026-05-27
+
+### Fixed
+
+- **Missing Radarr/Sonarr Links on Active Downloads (Issue #59)** — Resolved a bug where Radarr and Sonarr deep-link buttons were missing from active/completed download cards on the main dashboard for administrator users. Implemented a generic link enrichment utility `decorateDownloadsWithArrLinks()` to query Radarr and Sonarr catalog APIs in parallel and match downloads via their database ID or title, circumventing minimal metadata in cached records that lacked `titleSlug`. Added a robust integration test to safeguard links decoration for dashboard downloads.
+
+## [1.7.28] - 2026-05-27
+
+### Fixed
+
+- **Missing Sonarr Link on TV Requests (Issue #58)** — Resolved a bug where the Sonarr deep-link button was missing on TV request cards while Radarr links correctly appeared on movie request cards. Added support for all camelCase TVDB ID variants (`tvDbId`, `tvdbId`, `theTvdbId`, `theTvDbId`, `TvDbId`, `TheTvDbId`) on both backend link decoration (`server/utils/ombiHelpers.js`) and frontend rendering (`client/src/ui/requests.js`). Added a dedicated integration test to safeguard links decoration for TV requests.
+
+## [1.7.27] - 2026-05-27
+
+### Fixed
+
+- **Frontend Dashboard Serve Regression (Issue #57)** — Resolved a critical regression where the Vite-built frontend dashboard UI was not served. Consolidated Express configurations by migrating static files serving and SPA routing into the `createApp` factory in `server/app.js`. Cleaned up `server/index.js` to import and instantiate the app from the factory, successfully eliminating over 300 lines of duplicate route and middleware registrations, and ensuring alignment between development testing and production runtime configurations.
+
 ## [1.7.26] - 2026-05-27
 
 ### Fixed
 
-- **Missing Ombi & *Arr Request Links (Issue #56)** — Resolved an issue where the Ombi and *Arr lookup buttons failed to appear against request cards. Added `decorateRequestsWithArrLinks` to aggregate IDs and query Radarr/Sonarr libraries during SSE stream decoration and backend REST fetching. Also fixed a frontend condition failing to generate Ombi links for TV requests by checking a broader set of ID properties (`theTvDbId`, `theTmdbId`, `imdbId`).
+- **Missing Ombi & \*Arr Request Links (Issue #56)** — Resolved an issue where the Ombi and \*Arr lookup buttons failed to appear against request cards. Added `decorateRequestsWithArrLinks` to aggregate IDs and query Radarr/Sonarr libraries during SSE stream decoration and backend REST fetching. Also fixed a frontend condition failing to generate Ombi links for TV requests by checking a broader set of ID properties (`theTvDbId`, `theTmdbId`, `imdbId`).
 
 ## [1.7.25] - 2026-05-27
 

client/src/ui/requests.js

@@ -194,7 +194,7 @@ function createRequestCard(request) {
   const actions = document.createElement('span');
   actions.className = 'service-icons-container';
 
-  const id = request.theTvDbId || request.theMovieDbId || request.theTvdbId || request.theTmdbId || request.TvDbId || request.TheTvDbId || request.imdbId || request.ImdbId;
+  const id = request.theTvDbId || request.theTvdbId || request.tvDbId || request.tvdbId || request.TvDbId || request.TheTvDbId || request.theMovieDbId || request.theTmdbId || request.imdbId || request.ImdbId;
   if (state.ombiBaseUrl && id) {
     const ombiLink = document.createElement('a');
     ombiLink.className = 'ombi-link';

client/vite.config.js

@@ -1,7 +1,16 @@
 // Copyright (c) 2026 Gordon Bolton. MIT License.
-import { defineConfig } from 'vite'
+import { defineConfig, loadEnv } from 'vite'
+import path from 'path'
 
-export default defineConfig({
+export default defineConfig(({ mode }) => {
+  // Load env variables from root directory to match backend TLS configuration
+  const env = loadEnv(mode, path.resolve(__dirname, '..'), '');
+
+  const port = env.PORT || 3001;
+  const tlsEnabled = (env.TLS_ENABLED || 'true').toLowerCase() !== 'false';
+  const target = `${tlsEnabled ? 'https' : 'http'}://localhost:${port}`;
+
+  return {
     build: {
       outDir: '../public',
       emptyOutDir: false,
@@ -18,11 +27,14 @@ export default defineConfig({
     },
     server: {
       port: 5173,
+      host: true, // Listen on all network interfaces
       proxy: {
         '/api': {
-        target: 'http://localhost:3001',
+          target: target,
-        changeOrigin: true
+          changeOrigin: true,
+          secure: false // Allow self-signed certificate in development
         }
       }
     }
-})
+  };
+});

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "sofarr",
-  "version": "1.7.26",
+  "version": "1.7.30",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "sofarr",
-      "version": "1.7.26",
+      "version": "1.7.30",
       "license": "MIT",
       "dependencies": {
         "axios": "^1.6.0",

package.json

@@ -1,10 +1,12 @@
 {
   "name": "sofarr",
-  "version": "1.7.26",
+  "version": "1.7.30",
   "description": "A personal media download dashboard that shows your downloads 'so far' while you relax on the sofa waiting for your *arr services to finish",
   "main": "server/index.js",
   "scripts": {
-    "dev": "nodemon server/index.js",
+    "dev:server": "nodemon server/index.js",
+    "dev:client": "npm run dev --prefix client",
+    "dev": "concurrently -n 'server,client' -c 'blue,green' 'npm run dev:server' 'npm run dev:client'",
     "start": "node server/index.js",
     "install:all": "npm install",
     "test": "vitest run",

server/app.js

@@ -15,6 +15,7 @@ const swaggerUi = require('swagger-ui-express');
 const swaggerJsdoc = require('swagger-jsdoc');
 const YAML = require('yamljs');
 const path = require('path');
+const fs = require('fs');
 const { version } = require('../package.json');
 
 const sabnzbdRoutes = require('./routes/sabnzbd');
@@ -132,7 +133,7 @@ function createApp({ skipRateLimits = false } = {}) {
    *                 version:
    *                   type: string
    *                   description: sofarr version
-   *                   example: "1.7.25"
+   *                   example: "1.7.30"
    *     x-code-samples:
    *       - lang: curl
    *         label: cURL
@@ -232,6 +233,44 @@ function createApp({ skipRateLimits = false } = {}) {
   app.use('/api/status', statusRoutes);
   app.use('/api/history', historyRoutes);
 
+  // ---------------------------------------------------------------------------
+  // Static files — served before API routes
+  // index.html is served manually so we can inject the CSP nonce
+  // ---------------------------------------------------------------------------
+  const PUBLIC_DIR = path.join(__dirname, '../public');
+  const INDEX_HTML = path.join(PUBLIC_DIR, 'index.html');
+
+  // Serve all static assets (js, css, images, icons) except index.html.
+  // JS and CSS get no-cache so browsers revalidate on every load (ETag still
+  // avoids re-downloading unchanged files; only a deploy changes the ETag).
+  app.use(express.static(PUBLIC_DIR, {
+    index: false,
+    setHeaders(res, filePath) {
+      if (filePath.endsWith('.js') || filePath.endsWith('.css')) {
+        res.setHeader('Cache-Control', 'no-cache');
+      }
+    }
+  }));
+
+  // Serve index.html with CSP nonce injected into <script> tags
+  function serveIndex(req, res) {
+    fs.readFile(INDEX_HTML, 'utf8', (err, html) => {
+      if (err) return res.status(500).send('Internal Server Error');
+      const nonce = res.locals.cspNonce;
+      // Only inject nonce into <script> tags — style-src 'self' already permits
+      // same-origin <link rel=stylesheet> without a nonce, and injecting a nonce
+      // onto <link> breaks mobile browsers / caching proxies (stale HTML carries
+      // the old nonce which no longer matches the per-request CSP header).
+      const patched = html
+        .replace(/<script([^>]*)>/gi, `<script nonce="${nonce}"$1>`);
+      res.setHeader('Content-Type', 'text/html; charset=utf-8');
+      res.send(patched);
+    });
+  }
+
+  // SPA catch-all — serve index.html for any unmatched path
+  app.get('*', serveIndex);
+
   // Global error handler
   // eslint-disable-next-line no-unused-vars
   app.use((err, req, res, next) => {

server/index.js

@@ -82,20 +82,9 @@ console.error = function(...args) {
   logFile.write(`[${new Date().toISOString()}] ERROR: ${message}\n`);
 };
 
-const sabnzbdRoutes = require('./routes/sabnzbd');
-const sonarrRoutes = require('./routes/sonarr');
-const radarrRoutes = require('./routes/radarr');
-const embyRoutes = require('./routes/emby');
-const dashboardRoutes = require('./routes/dashboard');
-const statusRoutes = require('./routes/status');
-const historyRoutes = require('./routes/history');
-const authRoutes = require('./routes/auth');
-const webhookRoutes = require('./routes/webhook');
-const ombiRoutes = require('./routes/ombi');
-const debugRoutes = require('./routes/debug');
-const verifyCsrf = require('./middleware/verifyCsrf');
 const { startPoller, POLL_INTERVAL, POLLING_ENABLED } = require('./utils/poller');
 const { validateInstanceUrl } = require('./utils/config');
+const { createApp } = require('./app');
 
 // ---------------------------------------------------------------------------
 // Startup environment validation
@@ -117,284 +106,10 @@ if (process.env.EMBY_URL) {
   validateInstanceUrl(process.env.EMBY_URL, 'EMBY_URL');
 }
 
-const app = express();
+const app = createApp();
 const PORT = process.env.PORT || 3001;
-
-// Load OpenAPI spec from YAML
-const openapiSpec = YAML.load(path.join(__dirname, 'openapi.yaml'));
-
-// Configure swagger-jsdoc to merge JSDoc comments from route files
-const swaggerOptions = {
-  definition: {
-    ...openapiSpec,
-    openapi: '3.1.0'
-  },
-  apis: [
-    path.join(__dirname, 'routes/*.js'),
-    path.join(__dirname, 'index.js')
-  ]
-};
-
-const swaggerSpec = swaggerJsdoc(swaggerOptions);
-
-// Resolve TLS_ENABLED early — used in Helmet CSP and server startup
 const TLS_ENABLED = (process.env.TLS_ENABLED || 'true').toLowerCase() !== 'false';
 
-// ---------------------------------------------------------------------------
-// Trust proxy — required when behind Nginx/Caddy/Traefik so that
-// req.ip reflects the real client IP (not 127.0.0.1) and
-// req.secure is true when the upstream TLS is terminated by the proxy.
-// Set TRUST_PROXY=1 (or a specific IP/CIDR) via env.
-// ---------------------------------------------------------------------------
-if (process.env.TRUST_PROXY) {
-  const trustValue = /^\d+$/.test(process.env.TRUST_PROXY)
-    ? parseInt(process.env.TRUST_PROXY, 10)
-    : process.env.TRUST_PROXY;
-  app.set('trust proxy', trustValue);
-}
-
-// ---------------------------------------------------------------------------
-// Helmet v7 — security response headers
-// CSP uses a per-request nonce injected into index.html so inline scripts
-// and styles are allowed only with a valid nonce, not blanket unsafe-inline.
-// ---------------------------------------------------------------------------
-app.use((req, res, next) => {
-  // Generate a fresh nonce for every request
-  res.locals.cspNonce = crypto.randomBytes(16).toString('base64');
-  next();
-});
-
-app.use((req, res, next) => {
-  helmet({
-    contentSecurityPolicy: {
-      directives: {
-        defaultSrc: ["'self'"],
-        scriptSrc: ["'self'", (req, res) => `'nonce-${res.locals.cspNonce}'`],
-        styleSrc: ["'self'", (req, res) => `'nonce-${res.locals.cspNonce}'`],
-        imgSrc: ["'self'", 'data:', 'blob:'],
-        fontSrc: ["'self'", 'data:'],
-        connectSrc: ["'self'"],
-        objectSrc: ["'none'"],
-        baseUri: ["'self'"],
-        frameAncestors: ["'none'"],
-        formAction: ["'self'"],
-        upgradeInsecureRequests: (process.env.TRUST_PROXY || TLS_ENABLED) ? [] : null
-      }
-    },
-    hsts: {
-      maxAge: 31536000,       // 1 year
-      includeSubDomains: true,
-      preload: true
-    },
-    referrerPolicy: { policy: 'strict-origin-when-cross-origin' },
-    crossOriginEmbedderPolicy: false // not needed for this SPA
-  })(req, res, next);
-});
-
-// Permissions-Policy — disable powerful browser features not needed by the app
-app.use((req, res, next) => {
-  res.setHeader(
-    'Permissions-Policy',
-    'camera=(), microphone=(), geolocation=(), payment=(), usb=()'
-  );
-  next();
-});
-
-// ---------------------------------------------------------------------------
-// General API rate limiter — applies to all /api/* routes
-// More specific limiters (e.g. login) apply on top of this.
-// ---------------------------------------------------------------------------
-const apiLimiter = rateLimit({
-  windowMs: 15 * 60 * 1000,   // 15 minutes
-  max: 300,                    // 300 requests per IP per window (generous for polling)
-  standardHeaders: true,
-  legacyHeaders: false,
-  skip: (req) => req.originalUrl && req.originalUrl.startsWith('/api/dashboard/cover-art'),
-  message: { error: 'Too many requests, please try again later' }
-});
-
-// ---------------------------------------------------------------------------
-// Body parsing & cookies
-// ---------------------------------------------------------------------------
-app.use(cookieParser(cookieSecret || undefined));
-app.use(express.json({ limit: '64kb' })); // prevent oversized JSON payloads
-
-// ---------------------------------------------------------------------------
-// Health / readiness endpoints (no auth, no rate-limit)
-// Used by Docker HEALTHCHECK and orchestrators.
-// ---------------------------------------------------------------------------
-/**
- * @openapi
- * /health:
- *   get:
- *     tags: [Health]
- *     summary: Health check
- *     description: Returns server uptime and status. No authentication required. Used for liveness probes.
- *     security: []
- *     responses:
- *       '200':
- *         description: Server is healthy
- *         content:
- *           application/json:
- *             schema:
- *               type: object
- *               properties:
- *                 status:
- *                   type: string
- *                   example: "ok"
- *                 uptime:
- *                   type: number
- *                   description: Server uptime in seconds
- *                   example: 3600.5
- *                 version:
- *                   type: string
- *                   description: sofarr version
- *                   example: "1.7.25"
- */
-app.get('/health', (req, res) => {
-  res.json({ status: 'ok', uptime: process.uptime(), version });
-});
-
-/**
- * @openapi
- * /ready:
- *   get:
- *     tags: [Health]
- *     summary: Readiness check
- *     description: Checks if critical configuration (EMBY_URL) is present. Used by Docker HEALTHCHECK and orchestrators. No authentication required.
- *     security: []
- *     responses:
- *       '200':
- *         description: Server is ready
- *         content:
- *           application/json:
- *             schema:
- *               type: object
- *               properties:
- *                 status:
- *                   type: string
- *                   example: "ready"
- *       '503':
- *         description: Server not ready
- *         content:
- *           application/json:
- *             schema:
- *               type: object
- *               properties:
- *                 status:
- *                   type: string
- *                   example: "not ready"
- *                 reason:
- *                   type: string
- *                   example: "EMBY_URL not configured"
- */
-app.get('/ready', (req, res) => {
-  // Confirm critical config is present
-  const ready = !!(process.env.EMBY_URL);
-  if (ready) {
-    res.json({ status: 'ready' });
-  } else {
-    res.status(503).json({ status: 'not ready', reason: 'EMBY_URL not configured' });
-  }
-});
-
-// ---------------------------------------------------------------------------
-// Swagger UI - publicly accessible API documentation
-// ---------------------------------------------------------------------------
-app.use('/api/swagger', swaggerUi.serve, swaggerUi.setup(null, {
-  customSiteTitle: 'sofarr API Documentation',
-  customCss: '.swagger-ui .topbar { display: none }',
-  customJs: [
-    '/swagger-auth-banner.js'
-  ],
-  swaggerOptions: {
-    url: '/api/swagger.json'
-  }
-}));
-
-// Serve the raw OpenAPI spec as JSON with dynamic server URL
-app.get('/api/swagger.json', (req, res) => {
-  // Clone the spec to avoid modifying the original
-  const specCopy = JSON.parse(JSON.stringify(swaggerSpec));
-  
-  // Replace the server URL with the current request's origin
-  if (specCopy.servers && specCopy.servers.length > 0) {
-    const protocol = req.protocol;
-    const host = req.get('host');
-    specCopy.servers[0].url = `${protocol}://${host}`;
-  }
-  
-  res.json(specCopy);
-});
-
-// ---------------------------------------------------------------------------
-// Static files — served before API routes
-// index.html is served manually so we can inject the CSP nonce
-// ---------------------------------------------------------------------------
-const PUBLIC_DIR = path.join(__dirname, '../public');
-const INDEX_HTML = path.join(PUBLIC_DIR, 'index.html');
-
-// Serve all static assets (js, css, images, icons) except index.html.
-// JS and CSS get no-cache so browsers revalidate on every load (ETag still
-// avoids re-downloading unchanged files; only a deploy changes the ETag).
-app.use(express.static(PUBLIC_DIR, {
-  index: false,
-  setHeaders(res, filePath) {
-    if (filePath.endsWith('.js') || filePath.endsWith('.css')) {
-      res.setHeader('Cache-Control', 'no-cache');
-    }
-  }
-}));
-
-// Serve index.html with CSP nonce injected into <script> tags
-function serveIndex(req, res) {
-  fs.readFile(INDEX_HTML, 'utf8', (err, html) => {
-    if (err) return res.status(500).send('Internal Server Error');
-    const nonce = res.locals.cspNonce;
-    // Only inject nonce into <script> tags — style-src 'self' already permits
-    // same-origin <link rel=stylesheet> without a nonce, and injecting a nonce
-    // onto <link> breaks mobile browsers / caching proxies (stale HTML carries
-    // the old nonce which no longer matches the per-request CSP header).
-    const patched = html
-      .replace(/<script([^>]*)>/gi, `<script nonce="${nonce}"$1>`);
-    res.setHeader('Content-Type', 'text/html; charset=utf-8');
-    res.send(patched);
-  });
-}
-
-// ---------------------------------------------------------------------------
-// API routes (rate-limited; auth routes exempt CSRF for login/csrf endpoints)
-// CSRF protection applies to all state-changing /api/* requests except
-// /api/auth/login (pre-auth) and /api/auth/csrf (issues the token).
-// ---------------------------------------------------------------------------
-app.use('/api', apiLimiter);
-app.use('/api/auth', authRoutes);
-app.use('/api/webhook', webhookRoutes);
-app.use('/api/debug', debugRoutes);
-
-// All routes below this point require CSRF validation on mutating methods
-app.use('/api', verifyCsrf);
-app.use('/api/sabnzbd', sabnzbdRoutes);
-app.use('/api/sonarr', sonarrRoutes);
-app.use('/api/radarr', radarrRoutes);
-app.use('/api/emby', embyRoutes);
-app.use('/api/ombi', ombiRoutes);
-app.use('/api/dashboard', dashboardRoutes);
-app.use('/api/status', statusRoutes);
-app.use('/api/history', historyRoutes);
-
-// SPA catch-all — serve index.html for any unmatched path
-app.get('*', serveIndex);
-
-// ---------------------------------------------------------------------------
-// Global error handler — never leak stack traces to clients
-// ---------------------------------------------------------------------------
-// eslint-disable-next-line no-unused-vars
-app.use((err, req, res, next) => {
-  console.error('[Server] Unhandled error:', err.message);
-  res.status(500).json({ error: 'Internal server error' });
-});
-
 // ---------------------------------------------------------------------------
 // TLS / HTTPS support
 // Set TLS_CERT and TLS_KEY to paths of your certificate and private key.

server/openapi.yaml

@@ -22,7 +22,7 @@ info:
 
     ## SSE Streaming
     Real-time updates are available via Server-Sent Events at GET /api/dashboard/stream.
-  version: 1.7.26
+  version: 1.7.30
   contact:
     name: sofarr
   license:

server/routes/dashboard.js

@@ -13,7 +13,7 @@ const { buildUserDownloads } = require('../services/DownloadBuilder');
 const { onHistoryUpdate, offHistoryUpdate } = require('../utils/historyFetcher');
 const arrRetrieverRegistry = require('../utils/arrRetrievers');
 const { getOmbiInstances, getSonarrInstances, getRadarrInstances } = require('../utils/config');
-const { extractRequestedUser, filterRequestsByUser, decorateRequestsWithArrLinks } = require('../utils/ombiHelpers');
+const { extractRequestedUser, filterRequestsByUser, decorateRequestsWithArrLinks, decorateDownloadsWithArrLinks } = require('../utils/ombiHelpers');
 const { canBlocklist } = require('../services/DownloadAssembler');
 
 
@@ -218,6 +218,10 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
       ombiBaseUrl
     });
 
+    if (isAdmin) {
+      await decorateDownloadsWithArrLinks(userDownloads, isAdmin);
+    }
+
     res.json({
       user: user.name,
       isAdmin,
@@ -513,6 +517,10 @@ router.get('/stream', requireAuth, async (req, res) => {
         ombiBaseUrl
       });
 
+      if (isAdmin) {
+        await decorateDownloadsWithArrLinks(userDownloads, isAdmin);
+      }
+
       console.log(`[SSE] Sending ${userDownloads.length} downloads for ${user.name}`);
       const downloadClients = downloadClientRegistry.getAllClients().map(c => ({
         id: c.getInstanceId(),

server/utils/ombiHelpers.js

@@ -115,10 +115,10 @@ async function decorateRequestsWithArrLinks(requests, isAdmin) {
   requests.forEach(req => {
     // Determine if it's TV or Movie. Often `mediaType` is set, or `type === 'Tv'`
     // Fallback to checking for TV specific IDs.
-    const isTv = req.mediaType === 'tv' || req.type === 'Tv' || req.tvDbId || req.theTvDbId;
+    const isTv = req.mediaType === 'tv' || req.type === 'Tv' || req.tvDbId || req.tvdbId || req.theTvDbId || req.theTvdbId || req.TvDbId || req.TheTvDbId;
 
     if (isTv) {
-      const tvdbId = req.theTvDbId || req.theMovieDbId || req.theTvdbId || req.theTmdbId || req.TvDbId || req.TheTvDbId;
+      const tvdbId = req.theTvDbId || req.theTvdbId || req.tvDbId || req.tvdbId || req.TvDbId || req.TheTvDbId || req.theMovieDbId || req.theTmdbId;
       if (!tvdbId) return;
 
       for (const instData of sonarrData) {
@@ -145,8 +145,95 @@ async function decorateRequestsWithArrLinks(requests, isAdmin) {
   });
 }
 
+async function decorateDownloadsWithArrLinks(downloads, isAdmin) {
+  if (!isAdmin || !Array.isArray(downloads)) return;
+
+  const arrRetrieverRegistry = require('./arrRetrievers');
+  await arrRetrieverRegistry.initialize();
+
+  const sonarrRetrievers = arrRetrieverRegistry.getRetrieversByType('sonarr') || [];
+  const radarrRetrievers = arrRetrieverRegistry.getRetrieversByType('radarr') || [];
+
+  const [sonarrData, radarrData] = await Promise.all([
+    Promise.all(sonarrRetrievers.map(async r => {
+      try {
+        const response = await require('axios').get(`${r.url}/api/v3/series`, {
+          headers: { 'X-Api-Key': r.apiKey }
+        });
+        return { instance: r, series: response.data || [] };
+      } catch {
+        return { instance: r, series: [] };
+      }
+    })),
+    Promise.all(radarrRetrievers.map(async r => {
+      try {
+        const response = await require('axios').get(`${r.url}/api/v3/movie`, {
+          headers: { 'X-Api-Key': r.apiKey }
+        });
+        return { instance: r, movies: response.data || [] };
+      } catch {
+        return { instance: r, movies: [] };
+      }
+    }))
+  ]);
+
+  downloads.forEach(dl => {
+    // Determine if it's TV (series) or Movie
+    const isTv = dl.type === 'series' || dl.arrType === 'sonarr';
+
+    if (isTv) {
+      // Look for a match in Sonarr instances
+      for (const instData of sonarrData) {
+        const match = instData.series.find(s => {
+          if (!s) return false;
+          // Match by database series ID if the instance matches
+          const instanceUrlMatch = dl.arrInstanceUrl === instData.instance.url;
+          if (instanceUrlMatch && dl.arrSeriesId != null && s.id === parseInt(dl.arrSeriesId, 10)) {
+            return true;
+          }
+          // Fallback to seriesName matching
+          if (dl.seriesName && s.title && dl.seriesName.toLowerCase() === s.title.toLowerCase()) {
+            return true;
+          }
+          return false;
+        });
+
+        if (match && match.titleSlug) {
+          dl.arrLink = `${instData.instance.url}/series/${match.titleSlug}`;
+          dl.arrType = 'sonarr';
+          break;
+        }
+      }
+    } else if (dl.type === 'movie' || dl.arrType === 'radarr') {
+      // Look for a match in Radarr instances
+      for (const instData of radarrData) {
+        const match = instData.movies.find(m => {
+          if (!m) return false;
+          // Match by database movie ID if instance matches
+          const instanceUrlMatch = dl.arrInstanceUrl === instData.instance.url;
+          if (instanceUrlMatch && dl.arrContentId != null && m.id === parseInt(dl.arrContentId, 10)) {
+            return true;
+          }
+          // Fallback to movieName matching
+          if (dl.movieName && m.title && dl.movieName.toLowerCase() === m.title.toLowerCase()) {
+            return true;
+          }
+          return false;
+        });
+
+        if (match && match.titleSlug) {
+          dl.arrLink = `${instData.instance.url}/movie/${match.titleSlug}`;
+          dl.arrType = 'radarr';
+          break;
+        }
+      }
+    }
+  });
+}
+
 module.exports = {
   extractRequestedUser,
   filterRequestsByUser,
-  decorateRequestsWithArrLinks
+  decorateRequestsWithArrLinks,
+  decorateDownloadsWithArrLinks
 };

tests/frontend/ui/downloads.test.js

@@ -98,3 +98,139 @@ describe('renderTagBadges', () => {
     expect(result.childNodes.length).toBe(0);
   });
 });
+
+import { createDownloadCard } from '../../../client/src/ui/downloads.js';
+import { state } from '../../../client/src/state.js';
+
+describe('createDownloadCard rendering details', () => {
+  let originalState;
+
+  beforeEach(() => {
+    originalState = { ...state };
+  });
+
+  afterEach(() => {
+    // Reset global state
+    Object.assign(state, originalState);
+  });
+
+  describe('createClientLogo and fallbacks', () => {
+    it('renders client logo img tag when client is configured', () => {
+      const dl = {
+        title: 'Test Download',
+        type: 'series',
+        client: 'qbittorrent',
+        instanceName: 'Qbit Main'
+      };
+
+      const card = createDownloadCard(dl);
+      const wrapper = card.querySelector('.download-client-logo-wrapper');
+      expect(wrapper).toBeTruthy();
+
+      const img = wrapper.querySelector('img.download-client-logo');
+      expect(img).toBeTruthy();
+      expect(img.src).toContain('/images/clients/qbittorrent.svg');
+      expect(img.alt).toBe('Qbit Main icon');
+    });
+
+    it('falls back to character avatar text on img load error', () => {
+      const dl = {
+        title: 'Test Download',
+        type: 'series',
+        client: 'transmission'
+      };
+
+      const card = createDownloadCard(dl);
+      const wrapper = card.querySelector('.download-client-logo-wrapper');
+      const img = wrapper.querySelector('img');
+
+      // Trigger the onerror event programmatically to simulate missing/broken SVG
+      img.onerror();
+
+      expect(wrapper.classList.contains('fallback')).toBe(true);
+      expect(wrapper.textContent).toBe('T');
+    });
+  });
+
+  describe('createServiceIcons deep-linking', () => {
+    it('renders Ombi icon link for all users when ombiLink exists', () => {
+      state.isAdmin = false; // Non-admin should still see Ombi icon
+
+      const dl = {
+        title: 'Mandalorian S01E01',
+        type: 'series',
+        seriesName: 'The Mandalorian',
+        ombiLink: 'https://ombi.test/request/42',
+        ombiTooltip: 'View on Ombi'
+      };
+
+      const card = createDownloadCard(dl);
+      const ombiLinkEl = card.querySelector('.download-series a');
+      expect(ombiLinkEl).toBeTruthy();
+      expect(ombiLinkEl.href).toBe('https://ombi.test/request/42');
+
+      const img = ombiLinkEl.querySelector('img.service-icon.ombi');
+      expect(img).toBeTruthy();
+      expect(img.title).toBe('View on Ombi');
+    });
+
+    it('renders Sonarr icon link for administrator when arrType is sonarr and arrLink exists', () => {
+      state.isAdmin = true; // Admin required for Sonarr link
+
+      const dl = {
+        title: 'Mandalorian S01E01',
+        type: 'series',
+        seriesName: 'The Mandalorian',
+        arrType: 'sonarr',
+        arrLink: 'https://sonarr.test/series/the-mandalorian'
+      };
+
+      const card = createDownloadCard(dl);
+      const arrLinkEl = card.querySelector('.download-series a');
+      expect(arrLinkEl).toBeTruthy();
+      expect(arrLinkEl.href).toBe('https://sonarr.test/series/the-mandalorian');
+
+      const img = arrLinkEl.querySelector('img.service-icon.sonarr');
+      expect(img).toBeTruthy();
+      expect(img.title).toBe('Sonarr');
+    });
+
+    it('renders Radarr icon link for administrator when arrType is radarr and arrLink exists', () => {
+      state.isAdmin = true; // Admin required for Radarr link
+
+      const dl = {
+        title: 'Blade Runner 2049',
+        type: 'movie',
+        movieName: 'Blade Runner 2049',
+        arrType: 'radarr',
+        arrLink: 'https://radarr.test/movie/blade-runner-2049'
+      };
+
+      const card = createDownloadCard(dl);
+      const arrLinkEl = card.querySelector('.download-movie a');
+      expect(arrLinkEl).toBeTruthy();
+      expect(arrLinkEl.href).toBe('https://radarr.test/movie/blade-runner-2049');
+
+      const img = arrLinkEl.querySelector('img.service-icon.radarr');
+      expect(img).toBeTruthy();
+      expect(img.title).toBe('Radarr');
+    });
+
+    it('does not render Sonarr/Radarr links if the user is a non-admin', () => {
+      state.isAdmin = false; // Non-admin
+
+      const dl = {
+        title: 'Mandalorian S01E01',
+        type: 'series',
+        seriesName: 'The Mandalorian',
+        arrType: 'sonarr',
+        arrLink: 'https://sonarr.test/series/the-mandalorian'
+      };
+
+      const card = createDownloadCard(dl);
+      const arrLinkEl = card.querySelector('.download-series a');
+      expect(arrLinkEl).toBeNull(); // Admin gate successfully hides Sonarr icon
+    });
+  });
+});
+

tests/integration/dashboard.test.js

@@ -563,6 +563,47 @@ describe('GET /api/dashboard/user-downloads', () => {
       expect(dl.canBlocklist).toBe(true);
     });
   });
+
+  describe('Radarr/Sonarr deep-links decoration (Issue #59)', () => {
+    it('decorates active series downloads with Sonarr links for administrator', async () => {
+      const app = createApp({ skipRateLimits: true });
+      const { cookies } = await loginAs(app, EMBY_ADMIN_USER, EMBY_ADMIN_AUTH);
+
+      // Seed cache: queue record exists and matches SABnzbd slot
+      cache.set('poll:sab-queue', { slots: [ADMIN_SAB_SLOT], status: 'Downloading', speed: '10 MB/s' }, CACHE_TTL);
+      cache.set('poll:sab-history', { slots: [] }, CACHE_TTL);
+      cache.set('poll:sonarr-queue', { records: [ADMIN_SONARR_QUEUE_RECORD] }, CACHE_TTL);
+      cache.set('poll:sonarr-history', { records: [] }, CACHE_TTL);
+      cache.set('poll:sonarr-tags', [{ data: SONARR_TAGS }], CACHE_TTL);
+      cache.set('poll:radarr-queue', { records: [] }, CACHE_TTL);
+      cache.set('poll:radarr-history', { records: [] }, CACHE_TTL);
+      cache.set('poll:radarr-tags', RADARR_TAGS, CACHE_TTL);
+      cache.set('poll:qbittorrent', [], CACHE_TTL);
+
+      // Mock Sonarr /api/v3/series response carrying titleSlug and seriesId matching our record
+      nock(SONARR_BASE)
+        .get('/api/v3/series')
+        .reply(200, [
+          { id: 43, title: 'Admin Show', titleSlug: 'admin-show' }
+        ]);
+
+      // Mock Radarr /api/v3/movie response
+      nock(RADARR_BASE)
+        .get('/api/v3/movie')
+        .reply(200, []);
+
+      const res = await request(app)
+        .get('/api/dashboard/user-downloads')
+        .set('Cookie', cookies);
+
+      expect(res.status).toBe(200);
+      const downloads = res.body.downloads;
+      const dl = downloads.find(d => d.type === 'series');
+      expect(dl).toBeDefined();
+      expect(dl.arrLink).toBe('https://sonarr.test/series/admin-show');
+      expect(dl.arrType).toBe('sonarr');
+    });
+  });
 });
 
 // ---------------------------------------------------------------------------
@@ -1093,5 +1134,88 @@ describe('GET /api/dashboard/stream — SSE with Ombi showAll filtering', () =>
     expect(data.ombiRequests.movie).toHaveLength(2);
     expect(data.ombiRequests.tv).toHaveLength(2);
   });
+
+  it('verifies SSE payload structure contract against the frontend schema', async () => {
+    const { cookies } = await loginAs(appInstance);
+    const res = await request(appInstance)
+      .get('/api/dashboard/stream')
+      .query({ testClose: 'true' })
+      .set('Cookie', cookies);
+
+    expect(res.status).toBe(200);
+    const text = res.text;
+    expect(text).toContain('data:');
+    
+    const dataStr = text.substring(text.indexOf('{'));
+    const data = JSON.parse(dataStr.trim());
+
+    // Payload Contract Validation
+    expect(data).toHaveProperty('user');
+    expect(data).toHaveProperty('isAdmin');
+    expect(data).toHaveProperty('downloads');
+    expect(data).toHaveProperty('downloadClients');
+    expect(data).toHaveProperty('ombiRequests');
+    expect(data).toHaveProperty('ombiBaseUrl');
+
+    expect(Array.isArray(data.downloads)).toBe(true);
+    expect(Array.isArray(data.downloadClients)).toBe(true);
+    expect(Array.isArray(data.ombiRequests.movie)).toBe(true);
+    expect(Array.isArray(data.ombiRequests.tv)).toBe(true);
+  });
+
+  it('sends heartbeat comment over active stream and cleans up on close', async () => {
+    vi.useFakeTimers();
+
+    // 1. Get the route handler from the dashboard router stack
+    const dashboardRouter = require('../../server/routes/dashboard.js');
+    const route = dashboardRouter.stack.find(layer => layer.route && layer.route.path === '/stream');
+    // Get the final handler (after requireAuth middleware)
+    const streamHandler = route.route.stack[route.route.stack.length - 1].handle;
+
+    // 2. Setup mock req and res
+    const mockUser = { name: 'Alice', isAdmin: false };
+    const reqOnCallbacks = {};
+    const mockReq = {
+      user: mockUser,
+      query: { showAll: 'false', testClose: 'false' },
+      on: vi.fn((event, cb) => {
+        reqOnCallbacks[event] = cb;
+      })
+    };
+
+    const resWrites = [];
+    const mockRes = {
+      setHeader: vi.fn(),
+      flushHeaders: vi.fn(),
+      write: vi.fn((data) => {
+        resWrites.push(data);
+      }),
+      end: vi.fn()
+    };
+
+    // 3. Call the handler
+    await streamHandler(mockReq, mockRes);
+
+    // Initial payload should be written
+    expect(resWrites.length).toBeGreaterThan(0);
+    expect(resWrites[0]).toContain('data:');
+
+    // 4. Advance time by 25s to trigger the heartbeat setInterval
+    vi.advanceTimersByTime(25000);
+
+    // Check that heartbeat was written
+    expect(resWrites).toContain(': heartbeat\n\n');
+
+    // 5. Simulate client disconnect by triggering the 'close' event callback
+    expect(reqOnCallbacks['close']).toBeDefined();
+    reqOnCallbacks['close']();
+
+    // Check that advancing time again does NOT write another heartbeat
+    const beforeLength = resWrites.length;
+    vi.advanceTimersByTime(25000);
+    expect(resWrites.length).toBe(beforeLength); // No new writes!
+
+    vi.useRealTimers();
+  });
 });
 

tests/integration/ombi.test.js

@@ -233,6 +233,48 @@ describe('GET /api/ombi/requests', () => {
     expect(res.body.requests.movie[0].requestedUser.userName).toBe('adminuser');
   });
 
+  it('decorates TV requests with Sonarr links using tvDbId camelCase property (Issue #58)', async () => {
+    // 1. Setup mock instance config
+    process.env.SONARR_INSTANCES = JSON.stringify([
+      { id: 'sonarr-1', name: 'Test Sonarr', url: 'https://sonarr.test', apiKey: 'sonarr-key' }
+    ]);
+    
+    // Reset and re-initialize retrievers registry to pick up the Sonarr instance
+    arrRetrieverRegistry.retrievers.clear();
+    arrRetrieverRegistry.initialized = false;
+    
+    // 2. Setup mock Ombi TV request carrying `tvDbId` instead of `theTvDbId`
+    const tvRequestsWithTvDbId = [
+      { id: 4, title: 'Superman Show', requestedUser: { userName: 'adminuser' }, requestedByAlias: 'adminuser', type: 'tv', tvDbId: '101' }
+    ];
+    
+    nock.cleanAll();
+    setupOmbiRequestMocks(OMBI_REQUESTS.movie, tvRequestsWithTvDbId);
+    
+    // 3. Mock Sonarr API series call returning the series with matching tvdbId and titleSlug
+    nock('https://sonarr.test')
+      .get('/api/v3/series')
+      .reply(200, [
+        { tvdbId: 101, title: 'Superman Show', titleSlug: 'superman-show' }
+      ]);
+      
+    const { cookies } = await authenticateUser(app, 'AdminUser', true);
+    
+    const res = await request(app)
+      .get('/api/ombi/requests?showAll=true')
+      .set('Cookie', cookies)
+      .expect(200);
+      
+    // 4. Assert decoration succeeded
+    const supermanShow = res.body.requests.tv.find(r => r.id === 4);
+    expect(supermanShow).toBeDefined();
+    expect(supermanShow.arrLink).toBe('https://sonarr.test/series/superman-show');
+    expect(supermanShow.arrType).toBe('sonarr');
+    
+    // Clean up
+    delete process.env.SONARR_INSTANCES;
+  });
+
   it('handles case-insensitive username matching', async () => {
     const requestsWithMixedCase = [
       { id: 1, title: 'Test Movie', requestedUser: { userName: 'TestUser' }, requestedByAlias: 'TestUser', type: 'movie' },

tests/integration/ombiDecoration.test.js

@@ -0,0 +1,142 @@
+// Copyright (c) 2026 Gordon Bolton. MIT License.
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import nock from 'nock';
+import { createRequire } from 'module';
+
+const require = createRequire(import.meta.url);
+const { decorateDownloadsWithArrLinks } = require('../../server/utils/ombiHelpers.js');
+const arrRetrieverRegistry = require('../../server/utils/arrRetrievers.js');
+
+const SONARR_BASE = 'https://sonarr-decor.test';
+const RADARR_BASE = 'https://radarr-decor.test';
+
+describe('decorateDownloadsWithArrLinks Integration Tests', () => {
+  beforeEach(() => {
+    vi.restoreAllMocks();
+    nock.cleanAll();
+
+    // Reset the singleton retrievers registry so we can inject our test instances
+    arrRetrieverRegistry.retrievers.clear();
+    arrRetrieverRegistry.initialized = false;
+
+    // Configure test environment variables for retrievers
+    process.env.SONARR_INSTANCES = JSON.stringify([
+      { id: 'sonarr-1', name: 'Test Sonarr', url: SONARR_BASE, apiKey: 'sonarr-key' }
+    ]);
+    process.env.RADARR_INSTANCES = JSON.stringify([
+      { id: 'radarr-1', name: 'Test Radarr', url: RADARR_BASE, apiKey: 'radarr-key' }
+    ]);
+  });
+
+  afterEach(() => {
+    nock.cleanAll();
+    delete process.env.SONARR_INSTANCES;
+    delete process.env.RADARR_INSTANCES;
+    arrRetrieverRegistry.retrievers.clear();
+    arrRetrieverRegistry.initialized = false;
+  });
+
+  it('decorates a series download with Sonarr link matching on title', async () => {
+    // Mock Sonarr series query
+    nock(SONARR_BASE)
+      .get('/api/v3/series')
+      .reply(200, [
+        { id: 42, title: 'The Mandalorian', titleSlug: 'the-mandalorian' }
+      ]);
+
+    // Mock Radarr movie query (empty)
+    nock(RADARR_BASE)
+      .get('/api/v3/movie')
+      .reply(200, []);
+
+    const downloads = [
+      {
+        title: 'The.Mandalorian.S01E01.1080p',
+        type: 'series',
+        seriesName: 'The Mandalorian',
+        arrSeriesId: null
+      }
+    ];
+
+    await decorateDownloadsWithArrLinks(downloads, true);
+
+    expect(downloads[0].arrLink).toBe(`${SONARR_BASE}/series/the-mandalorian`);
+    expect(downloads[0].arrType).toBe('sonarr');
+  });
+
+  it('decorates a movie download with Radarr link matching on content ID', async () => {
+    // Mock Sonarr series query (empty)
+    nock(SONARR_BASE)
+      .get('/api/v3/series')
+      .reply(200, []);
+
+    // Mock Radarr movie query with matching ID
+    nock(RADARR_BASE)
+      .get('/api/v3/movie')
+      .reply(200, [
+        { id: 99, title: 'Blade Runner 2049', titleSlug: 'blade-runner-2049' }
+      ]);
+
+    const downloads = [
+      {
+        title: 'Blade.Runner.2049.2017.1080p',
+        type: 'movie',
+        movieName: 'Blade Runner 2049',
+        arrInstanceUrl: RADARR_BASE,
+        arrContentId: 99
+      }
+    ];
+
+    await decorateDownloadsWithArrLinks(downloads, true);
+
+    expect(downloads[0].arrLink).toBe(`${RADARR_BASE}/movie/blade-runner-2049`);
+    expect(downloads[0].arrType).toBe('radarr');
+  });
+
+  it('skips decoration entirely when isAdmin is false', async () => {
+    const downloads = [
+      {
+        title: 'The.Mandalorian.S01E01.1080p',
+        type: 'series',
+        seriesName: 'The Mandalorian'
+      }
+    ];
+
+    // No nocks are set up, so any HTTP calls would throw or error
+    await decorateDownloadsWithArrLinks(downloads, false);
+
+    expect(downloads[0].arrLink).toBeUndefined();
+    expect(downloads[0].arrType).toBeUndefined();
+  });
+
+  it('handles empty downloads array gracefully', async () => {
+    // No mock setups needed, should complete without throwing
+    await expect(decorateDownloadsWithArrLinks([], true)).resolves.not.toThrow();
+  });
+
+  it('handles external API fetch failures gracefully without failing the decoration pipeline', async () => {
+    // Mock Sonarr series query throwing connection error
+    nock(SONARR_BASE)
+      .get('/api/v3/series')
+      .replyWithError('connection refused');
+
+    // Mock Radarr movie query throwing timeout error
+    nock(RADARR_BASE)
+      .get('/api/v3/movie')
+      .replyWithError('timeout');
+
+    const downloads = [
+      {
+        title: 'The.Mandalorian.S01E01.1080p',
+        type: 'series',
+        seriesName: 'The Mandalorian'
+      }
+    ];
+
+    await expect(decorateDownloadsWithArrLinks(downloads, true)).resolves.not.toThrow();
+
+    // No links decorated since the fetch failed
+    expect(downloads[0].arrLink).toBeUndefined();
+    expect(downloads[0].arrType).toBeUndefined();
+  });
+});

tests/integration/rateLimiter.test.js

@@ -0,0 +1,65 @@
+// Copyright (c) 2026 Gordon Bolton. MIT License.
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import request from 'supertest';
+import nock from 'nock';
+
+describe('Rate Limiting Integration Tests', () => {
+  let app;
+  let originalSkipRateLimit;
+
+  beforeEach(async () => {
+    // Save current rate limiting skip flag
+    originalSkipRateLimit = process.env.SKIP_RATE_LIMIT;
+    // Explicitly delete it before loading the app so rate limiters are active
+    delete process.env.SKIP_RATE_LIMIT;
+    process.env.EMBY_URL = 'https://emby.test';
+
+    // Dynamically import createApp so that routes/auth.js evaluates process.env.SKIP_RATE_LIMIT as undefined
+    const appModule = await import('../../server/app.js');
+    const createApp = appModule.createApp;
+
+    // Create a new app instance with rate limiting enabled
+    app = createApp({ skipRateLimits: false });
+    
+    nock.cleanAll();
+  });
+
+  afterEach(() => {
+    // Restore rate limit skip flag
+    if (originalSkipRateLimit !== undefined) {
+      process.env.SKIP_RATE_LIMIT = originalSkipRateLimit;
+    } else {
+      delete process.env.SKIP_RATE_LIMIT;
+    }
+    delete process.env.EMBY_URL;
+    nock.cleanAll();
+  });
+
+  it('triggers a 429 Too Many Requests error on the auth endpoint after 10 failed requests', async () => {
+    // Mock Emby server auth endpoint to return 401 (failed credentials).
+    // The login rate limiter has `skipSuccessfulRequests: true`, meaning ONLY failed login attempts
+    // count toward the rate limit window of 10 requests.
+    nock('https://emby.test')
+      .post('/Users/authenticatebyname')
+      .reply(401, { error: 'Unauthorized' })
+      .persist();
+
+    // Fire 10 rapid failed login requests (the limit is 10)
+    for (let i = 0; i < 10; i++) {
+      const res = await request(app)
+        .post('/api/auth/login')
+        .send({ username: 'TestUser', password: 'wrongpassword' });
+      
+      expect(res.status).toBe(401);
+      expect(res.body.error).toBe('Invalid username or password');
+    }
+
+    // The 11th request must be rate limited and return 429
+    const limitRes = await request(app)
+      .post('/api/auth/login')
+      .send({ username: 'TestUser', password: 'wrongpassword' });
+
+    expect(limitRes.status).toBe(429);
+    expect(limitRes.body.error).toContain('Too many login attempts');
+  });
+});

tests/unit/utils/poller.test.js

@@ -0,0 +1,257 @@
+// Copyright (c) 2026 Gordon Bolton. MIT License.
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { createRequire } from 'module';
+
+const require = createRequire(import.meta.url);
+
+// Set environment variables before requiring any modules
+process.env.POLL_INTERVAL = '5000';
+process.env.WEBHOOK_FALLBACK_TIMEOUT = '10';
+
+const cache = require('../../../server/utils/cache.js');
+const downloadClients = require('../../../server/utils/downloadClients.js');
+const arrRetrieverRegistry = require('../../../server/utils/arrRetrievers.js');
+const config = require('../../../server/utils/config.js');
+
+// Set up mock/spies before requiring poller so destructuring in poller captures the spied versions!
+const initializeClientsSpy = vi.spyOn(downloadClients, 'initializeClients').mockResolvedValue(true);
+const getDownloadsByClientTypeSpy = vi.spyOn(downloadClients, 'getDownloadsByClientType').mockResolvedValue({
+  sabnzbd: [],
+  qbittorrent: []
+});
+
+const arrRegistryInitializeSpy = vi.spyOn(arrRetrieverRegistry, 'initialize').mockResolvedValue(true);
+const getTagsByTypeSpy = vi.spyOn(arrRetrieverRegistry, 'getTagsByType').mockResolvedValue({
+  sonarr: [],
+  radarr: []
+});
+const getQueuesByTypeSpy = vi.spyOn(arrRetrieverRegistry, 'getQueuesByType').mockResolvedValue({
+  sonarr: [],
+  radarr: []
+});
+const getHistoryByTypeSpy = vi.spyOn(arrRetrieverRegistry, 'getHistoryByType').mockResolvedValue({
+  sonarr: [],
+  radarr: []
+});
+const getOmbiRequestsSpy = vi.spyOn(arrRetrieverRegistry, 'getOmbiRequests').mockResolvedValue({
+  movie: [],
+  tv: []
+});
+
+const getSonarrInstancesSpy = vi.spyOn(config, 'getSonarrInstances').mockReturnValue([]);
+const getRadarrInstancesSpy = vi.spyOn(config, 'getRadarrInstances').mockReturnValue([]);
+const getOmbiInstancesSpy = vi.spyOn(config, 'getOmbiInstances').mockReturnValue([]);
+
+const cacheSetSpy = vi.spyOn(cache, 'set').mockImplementation(() => {});
+const cacheGetSpy = vi.spyOn(cache, 'get').mockReturnValue(null);
+const getWebhookMetricsSpy = vi.spyOn(cache, 'getWebhookMetrics').mockReturnValue(null);
+const getGlobalWebhookMetricsSpy = vi.spyOn(cache, 'getGlobalWebhookMetrics').mockReturnValue({
+  lastGlobalWebhookTimestamp: null
+});
+const incrementPollsSkippedSpy = vi.spyOn(cache, 'incrementPollsSkipped').mockImplementation(() => {});
+
+// Now require the poller
+const poller = require('../../../server/utils/poller.js');
+
+describe('Background Poller Utility', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+
+    // Re-apply standard resolved values
+    initializeClientsSpy.mockResolvedValue(true);
+    getDownloadsByClientTypeSpy.mockResolvedValue({ sabnzbd: [], qbittorrent: [] });
+    arrRegistryInitializeSpy.mockResolvedValue(true);
+    getTagsByTypeSpy.mockResolvedValue({ sonarr: [], radarr: [] });
+    getQueuesByTypeSpy.mockResolvedValue({ sonarr: [], radarr: [] });
+    getHistoryByTypeSpy.mockResolvedValue({ sonarr: [], radarr: [] });
+    getOmbiRequestsSpy.mockResolvedValue({ movie: [], tv: [] });
+
+    getSonarrInstancesSpy.mockReturnValue([]);
+    getRadarrInstancesSpy.mockReturnValue([]);
+    getOmbiInstancesSpy.mockReturnValue([]);
+
+    cacheSetSpy.mockImplementation(() => {});
+    cacheGetSpy.mockReturnValue(null);
+    getWebhookMetricsSpy.mockReturnValue(null);
+    getGlobalWebhookMetricsSpy.mockReturnValue({ lastGlobalWebhookTimestamp: null });
+    incrementPollsSkippedSpy.mockImplementation(() => {});
+  });
+
+  afterEach(() => {
+    poller.stopPoller();
+    vi.useRealTimers();
+  });
+
+  describe('Poller Core Logic', () => {
+    it('POLL_INTERVAL matches parsed environment variable', () => {
+      expect(poller.POLL_INTERVAL).toBe(5000);
+      expect(poller.POLLING_ENABLED).toBe(true);
+    });
+
+    it('successfully registers and notifies SSE subscribers on poll completion', async () => {
+      let callbackFired = false;
+      const callback = () => {
+        callbackFired = true;
+      };
+
+      poller.onPollComplete(callback);
+
+      await poller.pollAllServices();
+
+      expect(callbackFired).toBe(true);
+
+      // Clean up/Deregister callback
+      poller.offPollComplete(callback);
+      callbackFired = false;
+
+      await poller.pollAllServices();
+      expect(callbackFired).toBe(false);
+    });
+
+    it('prevents concurrent executions of pollAllServices via the polling guard', async () => {
+      // Stub initializeClients to delay using a promise
+      let resolveInit;
+      const delayPromise = new Promise((resolve) => {
+        resolveInit = resolve;
+      });
+      initializeClientsSpy.mockImplementation(() => delayPromise);
+
+      // Start the first poll (which remains pending on initializeClients)
+      const firstPollPromise = poller.pollAllServices();
+
+      const logSpy = vi.spyOn(console, 'log').mockImplementation(() => {});
+
+      // Trigger second poll immediately while first is in progress
+      await poller.pollAllServices();
+
+      expect(logSpy).toHaveBeenCalledWith('[Poller] Previous poll still running, skipping');
+
+      // Resolve the delay to let the first poll finish
+      resolveInit();
+      await firstPollPromise;
+    });
+
+    it('resets the polling guard flag on error so future polls can run', async () => {
+      initializeClientsSpy.mockRejectedValue(new Error('Initialization failed'));
+      
+      // Setup error spy
+      const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+      await poller.pollAllServices();
+
+      expect(errorSpy).toHaveBeenCalledWith('[Poller] Poll error:', 'Initialization failed');
+
+      // Verify polling flag has been reset in the finally block by running a successful poll
+      initializeClientsSpy.mockResolvedValue(true);
+      await poller.pollAllServices();
+      expect(initializeClientsSpy).toHaveBeenCalledTimes(2);
+    });
+  });
+
+  describe('Webhook-Based Instance Bypassing', () => {
+    it('skips polling for an instance with recent active webhook events', async () => {
+      const mockSonarrInstance = { id: 'sonarr-1', name: 'Main Sonarr', url: 'https://sonarr.test' };
+      const mockRadarrInstance = { id: 'radarr-1', name: 'Main Radarr', url: 'https://radarr.test' };
+      getSonarrInstancesSpy.mockReturnValue([mockSonarrInstance]);
+      getRadarrInstancesSpy.mockReturnValue([mockRadarrInstance]);
+
+      // Mock recent webhook activity within the 10 min window (Date.now() - 1 min)
+      const recentTimestamp = Date.now() - 60000;
+      getWebhookMetricsSpy.mockImplementation((url) => {
+        if (url === 'https://sonarr.test' || url === 'https://radarr.test') {
+          return { eventsReceived: 5, lastWebhookTimestamp: recentTimestamp };
+        }
+        return null;
+      });
+
+      await poller.pollAllServices();
+
+      // Verify that skips are incremented for both
+      expect(incrementPollsSkippedSpy).toHaveBeenCalledWith('https://sonarr.test');
+      expect(incrementPollsSkippedSpy).toHaveBeenCalledWith('https://radarr.test');
+
+      // Verify that Sonarr/Radarr-specific API retrievers were not called
+      expect(getTagsByTypeSpy).not.toHaveBeenCalled();
+      expect(getQueuesByTypeSpy).not.toHaveBeenCalled();
+      expect(getHistoryByTypeSpy).not.toHaveBeenCalled();
+    });
+
+    it('forces polling if the last webhook timestamp exceeds fallback timeout', async () => {
+      const mockSonarrInstance = { id: 'sonarr-1', name: 'Main Sonarr', url: 'https://sonarr.test' };
+      getSonarrInstancesSpy.mockReturnValue([mockSonarrInstance]);
+
+      // Mock stale webhook activity (Date.now() - 11 mins, fallback is 10 mins)
+      const staleTimestamp = Date.now() - 11 * 60000;
+      getWebhookMetricsSpy.mockImplementation((url) => {
+        if (url === 'https://sonarr.test') {
+          return { eventsReceived: 5, lastWebhookTimestamp: staleTimestamp };
+        }
+        return null;
+      });
+
+      await poller.pollAllServices();
+
+      // Should bypass the skip and perform a full poll
+      expect(getTagsByTypeSpy).toHaveBeenCalled();
+    });
+
+    it('forces polling via global webhook fallback if no global webhooks received for timeout duration', async () => {
+      const mockSonarrInstance = { id: 'sonarr-1', name: 'Main Sonarr', url: 'https://sonarr.test' };
+      getSonarrInstancesSpy.mockReturnValue([mockSonarrInstance]);
+
+      // Mock recent metrics on individual level but stale globally
+      const recentTimestamp = Date.now() - 60000;
+      getWebhookMetricsSpy.mockImplementation((url) => {
+        if (url === 'https://sonarr.test') {
+          return { eventsReceived: 5, lastWebhookTimestamp: recentTimestamp };
+        }
+        return null;
+      });
+
+      // Global webhook is stale
+      getGlobalWebhookMetricsSpy.mockReturnValue({
+        lastGlobalWebhookTimestamp: Date.now() - 12 * 60000
+      });
+
+      await poller.pollAllServices();
+
+      // Stale global webhooks should trigger fallback, bypassing the individual skip
+      expect(getTagsByTypeSpy).toHaveBeenCalled();
+    });
+  });
+
+  describe('Hybrid Timer Behavior (Fake Timers)', () => {
+    beforeEach(() => {
+      vi.useFakeTimers();
+    });
+
+    it('schedules periodic polls in startPoller on standard interval', async () => {
+      poller.startPoller();
+
+      // Triggered immediately on start (flush microtasks)
+      await vi.advanceTimersByTimeAsync(0);
+      expect(getDownloadsByClientTypeSpy).toHaveBeenCalledTimes(1);
+
+      // Advance time by 5000ms
+      await vi.advanceTimersByTimeAsync(5000);
+      expect(getDownloadsByClientTypeSpy).toHaveBeenCalledTimes(2);
+
+      // Advance by another 5000ms
+      await vi.advanceTimersByTimeAsync(5000);
+      expect(getDownloadsByClientTypeSpy).toHaveBeenCalledTimes(3);
+
+      poller.stopPoller();
+    });
+
+    it('clears intervals cleanly when stopPoller is called', async () => {
+      poller.startPoller();
+      await vi.advanceTimersByTimeAsync(0);
+      expect(getDownloadsByClientTypeSpy).toHaveBeenCalledTimes(1);
+
+      poller.stopPoller();
+
+      await vi.advanceTimersByTimeAsync(10000);
+      expect(getDownloadsByClientTypeSpy).toHaveBeenCalledTimes(1); // No new execution since poller was stopped
+    });
+  });
+});