[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_239":240,"_241":242},"routes/_app.x.$handle.$name",{"_103":102,"_38":51,"_111":93,"_33":112,"_13":14,"_113":-5,"_11":114,"_115":116,"_117":118,"_119":120,"_121":122,"_26":-5,"_123":-5,"_124":-5,"_125":31,"_126":127,"_128":129,"_130":-5,"_131":-5,"_132":133},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":18,"_19":-5},"project",{"_49":50,"_38":51,"_44":52,"_53":-5,"_54":31,"_55":56,"_57":56,"_58":-5,"_59":-5,"_19":60,"_61":-5,"_62":31,"_63":-5,"_64":-5,"_65":66,"_67":68,"_69":70,"_71":72,"_73":74,"_75":-5,"_76":77,"_78":77,"_79":80,"_81":80,"_82":80,"_83":77,"_84":77,"_85":86,"_87":88,"_89":90,"_91":31},"version",34,"changes",[25],"aiChatInfo",{"_20":21,"_22":-5,"_23":-5,"_24":-5},"userId","aiChatMessageId","c1cca7eb-58d2-4e52-98bb-f7ec4cc51ab5","aiChatThreadId","aiChatThreadUserId","aiChatThreadTitle",{"_26":27,"_28":29,"_30":31,"_32":31,"_33":34,"_35":34},"file",{"_36":37,"_38":34,"_39":40,"_41":43,"_44":45,"_46":14,"_47":48,"_30":31},"previous",{"_36":37,"_38":34,"_39":40,"_41":42},"deleted",false,"deletedHere","path","monitor.ts","latestPath","fileId","ea62b2f6-0bab-11f1-9901-42dde27851f2","name","fileType","interval","content","import { sqlite } from \"https://esm.town/v/std/sqlite@14-main/main.ts\";\nimport webpush from \"npm:web-push@3.6.7\";\n\n// This runs every 15 minutes to check if server is down\nexport default async function() {\n console.log(\"Checking server status...\", new Date().toISOString());\n\n try {\n // Get the last heartbeat\n const result = await sqlite.execute(\n \"SELECT timestamp FROM heartbeats ORDER BY timestamp DESC LIMIT 1\"\n );\n \n const lastHeartbeat = result.rows[0]?.timestamp as number || null;\n \n if (!lastHeartbeat) {\n console.log(\"No heartbeats recorded yet\");\n return;\n }\n\n const now = Date.now();\n const timeSinceLastHeartbeat = now - lastHeartbeat;\n const oneHour = 60 * 60 * 1000;\n \n console.log(`Last heartbeat: ${Math.floor(timeSinceLastHeartbeat / 60000)} minutes ago`);\n\n // If more than 1 hour since last heartbeat, send notifications\n if (timeSinceLastHeartbeat > oneHour) {\n console.log(\"Server is DOWN! Sending notifications...\");\n \n // Get all subscriptions\n const subscriptions = await sqlite.execute(\"SELECT * FROM subscriptions\");\n \n if (subscriptions.rows.length === 0) {\n console.log(\"No subscribers to notify\");\n return;\n }\n\n // Configure web-push with VAPID keys\n const vapidPublicKey = Deno.env.get(\"VAPID_PUBLIC_KEY\");\n const vapidPrivateKey = Deno.env.get(\"VAPID_PRIVATE_KEY\");\n const vapidEmail = Deno.env.get(\"VAPID_EMAIL\") || \"mailto:admin@example.com\";\n\n if (!vapidPublicKey || !vapidPrivateKey) {\n console.error(\"VAPID keys not configured! Please set VAPID_PUBLIC_KEY and VAPID_PRIVATE_KEY environment variables.\");\n return;\n }\n\n webpush.setVapidDetails(vapidEmail, vapidPublicKey, vapidPrivateKey);\n\n // Send notification to each subscriber\n const minutesSince = Math.floor(timeSinceLastHeartbeat / 60000);\n const payload = JSON.stringify({\n title: \"🔴 Home Server Down\",\n body: `Your server hasn't responded in ${minutesSince} minutes`,\n icon: \"/icon.png\",\n badge: \"/badge.png\",\n timestamp: now,\n });\n\n for (const sub of subscriptions.rows) {\n try {\n await webpush.sendNotification(\n {\n endpoint: sub.endpoint as string,\n keys: {\n p256dh: sub.p256dh as string,\n auth: sub.auth as string,\n },\n },\n payload\n );\n console.log(`✓ Notification sent to ${sub.endpoint}`);\n } catch (error) {\n console.error(`Failed to send notification to ${sub.endpoint}:`, error.message);\n \n // If subscription is no longer valid, remove it\n if (error.statusCode === 410) {\n await sqlite.execute({\n sql: \"DELETE FROM subscriptions WHERE endpoint = ?\",\n args: [sub.endpoint],\n });\n console.log(`Removed invalid subscription: ${sub.endpoint}`);\n }\n }\n }\n } else {\n console.log(\"Server is online ✓\");\n }\n } catch (error) {\n console.error(\"Monitor error:\", error);\n }\n}","import { sqlite } from \"https://esm.town/v/std/sqlite@14-main/main.ts\";\n\n// This runs every 15 minutes to check if server is down\nexport default async function() {\n console.log(\"Checking server status...\", new Date().toISOString());\n\n try {\n // Get the last heartbeat\n const result = await sqlite.execute(\n \"SELECT timestamp FROM heartbeats ORDER BY timestamp DESC LIMIT 1\"\n );\n \n const lastHeartbeat = result.rows[0]?.timestamp as number || null;\n \n if (!lastHeartbeat) {\n console.log(\"No heartbeats recorded yet\");\n return;\n }\n\n const now = Date.now();\n const timeSinceLastHeartbeat = now - lastHeartbeat;\n const oneHour = 60 * 60 * 1000;\n \n console.log(`Last heartbeat: ${Math.floor(timeSinceLastHeartbeat / 60000)} minutes ago`);\n\n // If more than 1 hour since last heartbeat, send Pushcut notification\n if (timeSinceLastHeartbeat > oneHour) {\n console.log(\"Server is DOWN! Sending Pushcut notification...\");\n fetch(Deno.env.get(\"NOTIFY_SERVER_DOWN_URL\")!, { method: \"POST\" });\n } else {\n console.log(\"Server is online ✓\");\n }\n } catch (error) {\n console.error(\"Monitor error:\", error);\n }\n}\n","createdAt",["D",1771706566424],"branchVersion","branchId","c6c88a12-0ba8-11f1-bece-42dde27851f2","id","c6c7fe26-0ba8-11f1-bece-42dde27851f2","heartbeat",["D",1771295494247],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","cea41dc4-b4c3-4a38-8ee6-ee9b5960fda2","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","dbeafde9-66b9-4cff-8625-2da1195a1c5d","tursoName","c6c7fe260ba811f1bece42dde27851f2","tursoHostname","c6c7fe260ba811f1bece42dde27851f2-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789519256886],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_103":102,"_110":106},"org",{"_103":102,"_104":-5,"_105":106,"_19":60,"_107":108,"_109":31},"branch",{"_13":92,"_38":93,"_49":48,"_94":50,"_95":-5,"_96":-5,"_97":-5,"_98":-5,"_99":-5,"_100":51,"_101":102},"isOwned",59,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","halffullheart","handle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvb2F1dGhfZ2l0aHViL2ltZ18yaGQyZVFDeXM0U3YzNkpjdHpudnBqcHRtOGQifQ","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_49":50,"_38":51,"_44":234,"_53":-5,"_54":31,"_55":56,"_57":56,"_58":-5,"_59":-5,"_19":60,"_61":-5,"_62":31,"_63":-5,"_64":-5,"_65":66,"_67":68,"_69":70,"_71":72,"_73":235,"_75":-5,"_76":77,"_78":77,"_79":80,"_81":80,"_82":80,"_83":77,"_84":77,"_85":236,"_87":237,"_89":238,"_91":31},"tree",[205,206,207,208,209,210,211],"files",[205,206,207,208,209,210,211],"counts",{"_195":66,"_196":153,"_197":66,"_198":199,"_200":201},"contents",[134,135,136,137,138,139,140],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles",true,"grants","orgs","customDomains",{},{"_49":187,"_38":188,"_36":189,"_144":-5,"_47":48,"_46":190,"_146":31,"_44":191,"_13":192,"_39":26,"_41":193,"_30":31,"_149":-5,"_33":194},{"_49":180,"_38":181,"_36":182,"_144":-5,"_47":48,"_46":183,"_146":31,"_44":184,"_13":153,"_39":26,"_41":185,"_30":31,"_149":-5,"_33":186},{"_49":172,"_38":173,"_36":174,"_144":-5,"_47":48,"_46":175,"_146":31,"_44":176,"_13":153,"_39":177,"_41":178,"_30":31,"_149":-5,"_33":179},{"_49":165,"_38":166,"_36":167,"_144":-5,"_47":48,"_46":168,"_146":31,"_44":169,"_13":66,"_39":26,"_41":170,"_30":31,"_149":-5,"_33":171},{"_49":155,"_38":156,"_36":157,"_144":-5,"_47":48,"_46":158,"_146":31,"_44":159,"_13":160,"_39":161,"_41":162,"_30":31,"_149":163,"_33":164},{"_49":151,"_38":34,"_36":37,"_144":-5,"_47":48,"_46":14,"_146":31,"_44":152,"_13":153,"_39":40,"_41":43,"_30":31,"_149":-5,"_33":154},{"_49":141,"_38":142,"_36":143,"_144":-5,"_47":48,"_46":145,"_146":31,"_44":147,"_13":66,"_39":26,"_41":148,"_30":31,"_149":-5,"_33":150},"3c84e2e0-0bd7-11f1-ab86-42dde27851f2","sw.js","3c84e39e-0bd7-11f1-ab86-42dde27851f2","parentId",18,"latest",["D",1771315448635],"self.addEventListener('push', function(event) {\n console.log('Push notification received:', event);\n \n let data = { title: 'Server Status', body: 'Notification received' };\n \n if (event.data) {\n try {\n data = event.data.json();\n } catch (e) {\n data.body = event.data.text();\n }\n }\n \n const options = {\n body: data.body,\n icon: data.icon || '/icon-192.png',\n badge: data.badge || '/badge-96.png',\n vibrate: [200, 100, 200],\n timestamp: data.timestamp || Date.now(),\n requireInteraction: true,\n actions: [\n { action: 'view', title: 'View Status' },\n { action: 'close', title: 'Close' }\n ]\n };\n \n event.waitUntil(\n self.registration.showNotification(data.title, options)\n );\n});\n\nself.addEventListener('notificationclick', function(event) {\n console.log('Notification clicked:', event.action);\n \n event.notification.close();\n \n if (event.action === 'view' || !event.action) {\n event.waitUntil(\n clients.openWindow('/')\n );\n }\n});\n\nself.addEventListener('install', function(event) {\n console.log('Service Worker installing...');\n self.skipWaiting();\n});\n\nself.addEventListener('activate', function(event) {\n console.log('Service Worker activating...');\n event.waitUntil(clients.claim());\n});\n","label",[142],"e0e4f94c-0f65-11f1-b50b-42dde27851f2",["D",1771706566424],1,[34],"50e1a9ba-0bd9-11f1-930b-42dde27851f2","main.ts","c6cc02dc-0ba8-11f1-bece-42dde27851f2",31,["D",1771316341783],22,"http","import { Hono } from \"npm:hono@4\";\nimport { cors } from \"npm:hono@4/cors\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite@14-main/main.ts\";\nimport { readFile } from \"https://esm.town/v/std/utils/index.ts\";\n\n// Initialize Hono app\nconst app = new Hono();\n\n// Add CORS middleware\napp.use(\"/*\", cors({\n origin: \"*\",\n allowMethods: [\"GET\", \"POST\", \"OPTIONS\"],\n allowHeaders: [\"Content-Type\"],\n}));\n\n// Initialize database\nasync function initDB() {\n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS heartbeats (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n timestamp INTEGER NOT NULL\n )\n `);\n \n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS subscriptions (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n endpoint TEXT UNIQUE NOT NULL,\n p256dh TEXT NOT NULL,\n auth TEXT NOT NULL,\n created_at INTEGER NOT NULL\n )\n `);\n}\n\n// Initialize DB on startup\nawait initDB();\n\n// PWA Manifest\nconst manifest = {\n name: \"Home Server Monitor\",\n short_name: \"Server Mon\",\n description: \"Monitor your home server status with real-time notifications\",\n start_url: \"/\",\n display: \"standalone\",\n background_color: \"#1a1a1a\",\n theme_color: \"#1a1a1a\",\n orientation: \"portrait\",\n icons: [\n {\n src: \"https://em-content.zobj.net/thumbs/240/apple/354/desktop-computer_1f5a5-fe0f.png\",\n sizes: \"240x240\",\n type: \"image/png\",\n purpose: \"any maskable\"\n }\n ]\n};\n\n// Routes\n\n// Home page\napp.get(\"/\", async (c) => {\n const html = await readFile(\"/index.html\");\n return c.html(html);\n});\n\n// Client JavaScript\napp.get(\"/client.js\", async (c) => {\n const clientJs = await readFile(\"/client.js\");\n return new Response(clientJs, {\n status: 200,\n headers: {\n \"Content-Type\": \"application/javascript; charset=utf-8\",\n \"Cache-Control\": \"public, max-age=3600\",\n },\n });\n});\n\n// Service Worker\napp.get(\"/sw.js\", async (c) => {\n const sw = await readFile(\"/sw.js\");\n return new Response(sw, {\n status: 200,\n headers: {\n \"Content-Type\": \"application/javascript; charset=utf-8\",\n \"Cache-Control\": \"no-cache\",\n },\n });\n});\n\n// PWA Manifest\napp.get(\"/manifest.json\", (c) => {\n return c.json(manifest, {\n headers: {\n \"Cache-Control\": \"public, max-age=3600\"\n }\n });\n});\n\n// Heartbeat endpoint - your server calls this\napp.post(\"/heartbeat\", async (c) => {\n await sqlite.execute({\n sql: \"INSERT INTO heartbeats (timestamp) VALUES (?)\",\n args: [Date.now()],\n });\n \n return c.json({ success: true, timestamp: Date.now() });\n});\n\n// Get last heartbeat status\napp.get(\"/status\", async (c) => {\n const result = await sqlite.execute(\n \"SELECT timestamp FROM heartbeats ORDER BY timestamp DESC LIMIT 1\"\n );\n \n const lastHeartbeat = result.rows[0]?.timestamp as number || null;\n const now = Date.now();\n const isOnline = lastHeartbeat ? (now - lastHeartbeat) < 60 * 60 * 1000 : false;\n const minutesSince = lastHeartbeat ? Math.floor((now - lastHeartbeat) / 60000) : null;\n \n return c.json({ \n lastHeartbeat,\n isOnline,\n minutesSince,\n currentTime: now\n });\n});\n\n// Subscribe to notifications\napp.post(\"/subscribe\", async (c) => {\n const subscription = await c.req.json();\n \n await sqlite.execute({\n sql: `INSERT OR REPLACE INTO subscriptions (endpoint, p256dh, auth, created_at) \n VALUES (?, ?, ?, ?)`,\n args: [\n subscription.endpoint,\n subscription.keys.p256dh,\n subscription.keys.auth,\n Date.now(),\n ],\n });\n \n return c.json({ success: true });\n});\n\n// Get VAPID public key for push notifications\napp.get(\"/vapid-public-key\", (c) => {\n const publicKey = Deno.env.get(\"VAPID_PUBLIC_KEY\") || \"\";\n return c.json({ publicKey });\n});\n\n// 404 handler\napp.notFound((c) => {\n return c.text(\"Not Found\", 404);\n});\n\n// Error handler\napp.onError((err, c) => {\n console.error(\"Error:\", err);\n return c.json({ error: err.message }, 500);\n});\n\n// Export as default HTTP handler\nexport default app.fetch;\n","halffullheartbeat",[156],"379462e2-0bd7-11f1-9d1f-42dde27851f2","index.html","3794640e-0bd7-11f1-9d1f-42dde27851f2",17,["D",1771315440335],"\n\n\n \n \n Home Server Monitor\n \n \n \n \n \n\n\n

🖥️ Home Server Monitor

Real-time server status tracking

\n \n

\n ⏳\n

Checking...

Loading status...

\n \n \n \n

\n How it works:
\n • Your server pings this app every 15 minutes
\n • If no ping received for 1+ hour, you'll get notified
\n • Subscribe to get push notifications when server is down\n

\n\n

\n Server Heartbeat Endpoint:
\n POST /heartbeat\n

\n \n

\n\n \n\n\n",[166],"e4b9614a-0bda-11f1-8fcf-42dde27851f2","generate-vapid-keys.ts","f54a9e36-0bab-11f1-b64e-42dde27851f2",32,["D",1771317019322],"script","import webpush from \"npm:web-push@3.6.7\";\n\n// Run this once to generate VAPID keys for push notifications\nasync function main() {\n const vapidKeys = webpush.generateVAPIDKeys();\n\n console.log(\"\\n🔑 VAPID Keys Generated!\\n\");\n console.log(\"Add these as environment variables to your val:\\n\");\n console.log(\"VAPID_PUBLIC_KEY:\");\n console.log(vapidKeys.publicKey);\n console.log(\"\\nVAPID_PRIVATE_KEY:\");\n console.log(vapidKeys.privateKey);\n console.log(\"\\nVAPID_EMAIL (optional):\");\n console.log(\"mailto:your-email@example.com\");\n console.log(\"\\n\");\n\n return {\n publicKey: vapidKeys.publicKey,\n privateKey: vapidKeys.privateKey,\n instructions: \"Add these to your val's environment variables\",\n };\n}\n\nmain();",[173],"a7635f02-0bdb-11f1-a930-42dde27851f2","client.js","4c4f3668-0bd6-11f1-b6e8-42dde27851f2",33,["D",1771317345899],"const API_BASE = window.location.origin;\nlet swRegistration = null;\n\n// Check if notifications are supported\nfunction notificationsSupported() {\n return 'Notification' in window && 'serviceWorker' in navigator && 'PushManager' in window;\n}\n\n// Convert VAPID key\nfunction urlBase64ToUint8Array(base64String) {\n // Remove any whitespace and ensure clean string\n base64String = base64String.trim().replace(/\\s/g, '');\n \n // Add padding if needed\n const padding = '='.repeat((4 - base64String.length % 4) % 4);\n \n // Convert URL-safe base64 to standard base64\n const base64 = (base64String + padding)\n .replace(/-/g, '+')\n .replace(/_/g, '/');\n \n try {\n // Decode base64 string\n const rawData = window.atob(base64);\n const outputArray = new Uint8Array(rawData.length);\n \n for (let i = 0; i < rawData.length; ++i) {\n outputArray[i] = rawData.charCodeAt(i);\n }\n \n return outputArray;\n } catch (error) {\n console.error('Failed to decode VAPID key:', error);\n throw new Error('Invalid VAPID key format');\n }\n}\n\n// Fetch server status\nasync function fetchStatus() {\n try {\n const response = await fetch(API_BASE + '/status');\n const data = await response.json();\n \n const indicator = document.getElementById('statusIndicator');\n const statusText = document.getElementById('statusText');\n const statusDetail = document.getElementById('statusDetail');\n \n if (data.isOnline) {\n indicator.className = 'status-indicator online';\n indicator.textContent = '✓';\n statusText.textContent = 'Server Online';\n statusDetail.textContent = `Last heartbeat: ${data.minutesSince} minutes ago`;\n } else {\n indicator.className = 'status-indicator offline';\n indicator.textContent = '✗';\n statusText.textContent = 'Server Offline';\n statusDetail.textContent = data.minutesSince \n ? `Last seen: ${data.minutesSince} minutes ago`\n : 'No heartbeats recorded';\n }\n } catch (error) {\n console.error('Failed to fetch status:', error);\n }\n}\n\n// Subscribe to notifications\nasync function subscribe() {\n if (!notificationsSupported()) {\n showError('Push notifications are not supported in this browser');\n return;\n }\n\n try {\n // Request notification permission\n const permission = await Notification.requestPermission();\n if (permission !== 'granted') {\n showError('Notification permission denied');\n return;\n }\n\n // Get VAPID public key\n const keyResponse = await fetch(API_BASE + '/vapid-public-key');\n const { publicKey } = await keyResponse.json();\n \n if (!publicKey) {\n showError('VAPID key not configured on server. Please add VAPID_PUBLIC_KEY and VAPID_PRIVATE_KEY environment variables.');\n return;\n }\n\n // Subscribe to push notifications\n const subscription = await swRegistration.pushManager.subscribe({\n userVisibleOnly: true,\n applicationServerKey: urlBase64ToUint8Array(publicKey)\n });\n\n // Send subscription to server\n const response = await fetch(API_BASE + '/subscribe', {\n method: 'POST',\n headers: { 'Content-Type': 'application/json' },\n body: JSON.stringify(subscription)\n });\n\n if (response.ok) {\n updateSubscribeButton(true);\n showError('✓ Notifications enabled successfully!', 'success');\n }\n } catch (error) {\n console.error('Subscription failed:', error);\n showError('Failed to enable notifications: ' + error.message);\n }\n}\n\nfunction updateSubscribeButton(subscribed) {\n const btn = document.getElementById('subscribeBtn');\n if (subscribed) {\n btn.textContent = '✓ Notifications Enabled';\n btn.className = 'btn-success';\n btn.disabled = true;\n } else {\n btn.textContent = '🔔 Enable Notifications';\n btn.className = 'btn-primary';\n btn.disabled = false;\n }\n}\n\nfunction showError(message, type = 'error') {\n const errorBox = document.getElementById('errorBox');\n errorBox.innerHTML = `

${message}

`;\n if (type === 'success') {\n setTimeout(() => errorBox.innerHTML = '', 5000);\n }\n}\n\n// Initialize\nasync function init() {\n // Update endpoint URL\n document.getElementById('endpointUrl').textContent = 'POST ' + API_BASE + '/heartbeat';\n \n // Fetch initial status\n await fetchStatus();\n \n // Refresh status every 30 seconds\n setInterval(fetchStatus, 30000);\n\n // Register service worker\n if ('serviceWorker' in navigator) {\n try {\n swRegistration = await navigator.serviceWorker.register('/sw.js');\n console.log('Service Worker registered');\n\n // Check if already subscribed\n const subscription = await swRegistration.pushManager.getSubscription();\n updateSubscribeButton(!!subscription);\n \n document.getElementById('subscribeBtn').disabled = false;\n document.getElementById('subscribeBtn').addEventListener('click', subscribe);\n } catch (error) {\n console.error('Service Worker registration failed:', error);\n }\n }\n}\n\ninit();\n",[181],"65cf428a-0bd7-11f1-8b5a-42dde27851f2","README.md","0a4ff5c4-0bac-11f1-9901-42dde27851f2",23,["D",1771315517900],2,"# 🖥️ Home Server Monitor\n\nA serverless monitoring solution for your home server with push notifications when it goes offline.\n\n## Features\n\n- **Real-time Status**: Check if your server is online/offline\n- **Push Notifications**: Get notified when server goes down (1+ hour without heartbeat)\n- **PWA Support**: Install as a Progressive Web App on mobile/desktop\n- **Clean Architecture**: Static files served separately for better maintainability\n\n## Project Structure\n\n```\nheartbeat/\n├── main.ts # Hono server with API routes\n├── index.html # Static HTML page\n├── client.js # Frontend JavaScript\n├── sw.js # Service Worker for push notifications\n├── monitor.ts # Interval val that checks for downtime\n├── generate-vapid-keys.ts # Script to generate VAPID keys\n└── README.md # This file\n```\n\n## Setup\n\n### 1. Generate VAPID Keys (for push notifications)\n\nRun the `generate-vapid-keys.ts` script to generate your VAPID keys.\n\n### 2. Set Environment Variables\n\nAdd these to your Val Town environment:\n- `VAPID_PUBLIC_KEY` - Public key from step 1\n- `VAPID_PRIVATE_KEY` - Private key from step 1\n\n### 3. Configure Your Server\n\nAdd a cron job to your home server that pings the heartbeat endpoint every 15 minutes:\n\n```bash\n*/15 * * * * curl -X POST https://halffullheartbeat.val.run/heartbeat\n```\n\n### 4. Enable Notifications\n\n1. Visit your deployed app\n2. Click \"Enable Notifications\"\n3. Grant notification permission\n\n## API Endpoints\n\n### `POST /heartbeat`\nYour server calls this endpoint to signal it's alive.\n\n### `GET /status`\nReturns current server status:\n```json\n{\n \"lastHeartbeat\": 1234567890000,\n \"isOnline\": true,\n \"minutesSince\": 5,\n \"currentTime\": 1234567890000\n}\n```\n\n### `POST /subscribe`\nSubscribe to push notifications (called by frontend).\n\n### `GET /vapid-public-key`\nGet VAPID public key for push subscription.\n\n## How It Works\n\n1. **Heartbeat**: Your server sends a POST request every 15 minutes to `/heartbeat`\n2. **Monitoring**: The `monitor.ts` interval val checks every 15 minutes if any heartbeat was received in the last hour\n3. **Notifications**: If server is down (no heartbeat for 1+ hour), push notifications are sent to all subscribers\n4. **Status**: Frontend polls `/status` every 30 seconds to show real-time status\n\n## Architecture Improvements\n\nThis project now uses a clean separation of concerns:\n\n- **main.ts**: Pure backend logic with Hono routes\n- **index.html**: Static HTML served as-is (no React SSR needed)\n- **client.js**: Frontend JavaScript in a separate file\n- **sw.js**: Service Worker logic in its own file\n\nBenefits:\n- ✅ Better maintainability\n- ✅ Easier debugging (proper file names in dev tools)\n- ✅ Better caching (static files cached separately)\n- ✅ No need for React imports or dangerouslySetInnerHTML\n- ✅ Cleaner codebase\n\n## Technologies\n\n- **Val Town**: Serverless hosting\n- **Hono**: Fast web framework\n- **SQLite**: Database for heartbeats and subscriptions\n- **Push API**: Browser push notifications\n- **Service Workers**: Offline support and notifications\n",[188],"pulls","branches","forks","envVars",{"_202":192,"_204":66},"connections",{"_202":66,"_203":66},"count","unfilledCount","emptyCount",{"_49":187,"_38":188,"_36":189,"_144":-5,"_47":48,"_46":190,"_146":31,"_44":231,"_13":192,"_39":26,"_41":193,"_30":31,"_149":-5,"_213":232,"_33":233},{"_49":180,"_38":181,"_36":182,"_144":-5,"_47":48,"_46":183,"_146":31,"_44":228,"_13":153,"_39":26,"_41":185,"_30":31,"_149":-5,"_213":229,"_33":230},{"_49":172,"_38":173,"_36":174,"_144":-5,"_47":48,"_46":175,"_146":31,"_44":225,"_13":153,"_39":177,"_41":178,"_30":31,"_149":-5,"_213":226,"_33":227},{"_49":165,"_38":166,"_36":167,"_144":-5,"_47":48,"_46":168,"_146":31,"_44":222,"_13":66,"_39":26,"_41":170,"_30":31,"_149":-5,"_213":223,"_33":224},{"_49":155,"_38":156,"_36":157,"_144":-5,"_47":48,"_46":158,"_146":31,"_44":219,"_13":160,"_39":161,"_41":162,"_30":31,"_149":163,"_213":220,"_33":221},{"_49":151,"_38":34,"_36":37,"_144":-5,"_47":48,"_46":14,"_146":31,"_44":216,"_13":153,"_39":40,"_41":43,"_30":31,"_149":-5,"_213":217,"_33":218},{"_49":141,"_38":142,"_36":143,"_144":-5,"_47":48,"_46":145,"_146":31,"_44":212,"_13":66,"_39":26,"_41":148,"_30":31,"_149":-5,"_213":214,"_33":215},["D",1771315448635],"children",[],[142],["D",1771706566424],[],[34],["D",1771316341783],[],[156],["D",1771315440335],[],[166],["D",1771317019322],[],[173],["D",1771317345899],[],[181],["D",1771315517900],[],[188],["D",1771295494247],["D",1789519256886],{"_103":102,"_110":106},{"_103":102,"_104":-5,"_105":106,"_19":60,"_107":108,"_109":31},{"_13":92,"_38":93,"_49":48,"_94":50,"_95":-5,"_96":-5,"_97":-5,"_98":-5,"_99":-5,"_100":51,"_101":102},"ctx",{"_85":-5,"_131":272,"_273":274,"_275":276,"_277":31,"_278":31,"_279":31,"_280":129,"_281":-5,"_282":-7,"_283":-7,"_284":66,"_285":31,"_286":31,"_287":-5,"_288":31,"_289":31,"_290":31,"_291":-5},"ENV",{"_243":244,"_245":246,"_247":93,"_248":249,"_250":251,"_252":253,"_254":255,"_256":257,"_258":259,"_260":261,"_262":263,"_264":265,"_266":267,"_268":269,"_270":271},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

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