postgres uptime

2026-05-14 21:16:06 +01:00
parent 11e076394b
commit e58adcc716
7 changed files with 466 additions and 59 deletions
@@ -67,6 +67,22 @@ API_RATE_LIMIT_WINDOW_MS=60000
 API_RATE_LIMIT_MAX=120
 ```

+## Uptime snapshots
+
+The production server samples uptime every 30 minutes and exposes the history at
+`/api/uptime`. Set `DATABASE_URL` or `UPTIME_DATABASE_URL` to persist snapshots
+in Postgres:
+
+```sh
+DATABASE_URL=postgres://user:password@127.0.0.1:5432/tssbot
+UPTIME_SAMPLE_INTERVAL_MS=1800000
+UPTIME_HISTORY_LIMIT=336
+```
+
+The server creates the `uptime_snapshots` table automatically. Without a
+database URL, uptime sampling still runs but only the latest in-memory snapshot
+is available.
+
 ## GitHub webhook

 The webhook process listens on port `3011` at `/github`. Configure GitHub to send
@@ -9,6 +9,10 @@ module.exports = {
        PORT: process.env.PORT || 3010,
        API_UPSTREAM: process.env.API_UPSTREAM || 'http://127.0.0.1:6000',
        PUBLIC_ORIGIN: process.env.PUBLIC_ORIGIN || '',
+        DATABASE_URL: process.env.DATABASE_URL || '',
+        UPTIME_DATABASE_URL: process.env.UPTIME_DATABASE_URL || '',
+        UPTIME_SAMPLE_INTERVAL_MS: process.env.UPTIME_SAMPLE_INTERVAL_MS || 1800000,
+        UPTIME_HISTORY_LIMIT: process.env.UPTIME_HISTORY_LIMIT || 336,
        API_CACHE_TTL_MS: process.env.API_CACHE_TTL_MS || 15000,
        API_RATE_LIMIT_WINDOW_MS: process.env.API_RATE_LIMIT_WINDOW_MS || 60000,
        API_RATE_LIMIT_MAX: process.env.API_RATE_LIMIT_MAX || 120,
@@ -3,6 +3,9 @@ NODE_ENV=production
 PORT=3010
 API_UPSTREAM=http://127.0.0.1:6000
 PUBLIC_ORIGIN=https://example.com
+DATABASE_URL=postgres://user:password@127.0.0.1:5432/tssbot
+UPTIME_SAMPLE_INTERVAL_MS=1800000
+UPTIME_HISTORY_LIMIT=336
 API_CACHE_TTL_MS=15000
 API_RATE_LIMIT_WINDOW_MS=60000
 API_RATE_LIMIT_MAX=120
@@ -10,6 +10,7 @@
      "dependencies": {
        "@tailwindcss/vite": "^4.1.8",
        "@vitejs/plugin-react": "^4.5.0",
+        "pg": "^8.20.0",
        "react": "^19.1.0",
        "react-dom": "^19.1.0",
        "vite": "^6.3.5"
@@ -2975,6 +2976,95 @@
        "node": ">=8"
      }
    },
+    "node_modules/pg": {
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/pg/-/pg-8.20.0.tgz",
+      "integrity": "sha512-ldhMxz2r8fl/6QkXnBD3CR9/xg694oT6DZQ2s6c/RI28OjtSOpxnPrUCGOBJ46RCUxcWdx3p6kw/xnDHjKvaRA==",
+      "license": "MIT",
+      "dependencies": {
+        "pg-connection-string": "^2.12.0",
+        "pg-pool": "^3.13.0",
+        "pg-protocol": "^1.13.0",
+        "pg-types": "2.2.0",
+        "pgpass": "1.0.5"
+      },
+      "engines": {
+        "node": ">= 16.0.0"
+      },
+      "optionalDependencies": {
+        "pg-cloudflare": "^1.3.0"
+      },
+      "peerDependencies": {
+        "pg-native": ">=3.0.1"
+      },
+      "peerDependenciesMeta": {
+        "pg-native": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/pg-cloudflare": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/pg-cloudflare/-/pg-cloudflare-1.3.0.tgz",
+      "integrity": "sha512-6lswVVSztmHiRtD6I8hw4qP/nDm1EJbKMRhf3HCYaqud7frGysPv7FYJ5noZQdhQtN2xJnimfMtvQq21pdbzyQ==",
+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/pg-connection-string": {
+      "version": "2.12.0",
+      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-2.12.0.tgz",
+      "integrity": "sha512-U7qg+bpswf3Cs5xLzRqbXbQl85ng0mfSV/J0nnA31MCLgvEaAo7CIhmeyrmJpOr7o+zm0rXK+hNnT5l9RHkCkQ==",
+      "license": "MIT"
+    },
+    "node_modules/pg-int8": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/pg-int8/-/pg-int8-1.0.1.tgz",
+      "integrity": "sha512-WCtabS6t3c8SkpDBUlb1kjOs7l66xsGdKpIPZsg4wR+B3+u9UAum2odSsF9tnvxg80h4ZxLWMy4pRjOsFIqQpw==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/pg-pool": {
+      "version": "3.13.0",
+      "resolved": "https://registry.npmjs.org/pg-pool/-/pg-pool-3.13.0.tgz",
+      "integrity": "sha512-gB+R+Xud1gLFuRD/QgOIgGOBE2KCQPaPwkzBBGC9oG69pHTkhQeIuejVIk3/cnDyX39av2AxomQiyPT13WKHQA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "pg": ">=8.0"
+      }
+    },
+    "node_modules/pg-protocol": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/pg-protocol/-/pg-protocol-1.13.0.tgz",
+      "integrity": "sha512-zzdvXfS6v89r6v7OcFCHfHlyG/wvry1ALxZo4LqgUoy7W9xhBDMaqOuMiF3qEV45VqsN6rdlcehHrfDtlCPc8w==",
+      "license": "MIT"
+    },
+    "node_modules/pg-types": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/pg-types/-/pg-types-2.2.0.tgz",
+      "integrity": "sha512-qTAAlrEsl8s4OiEQY69wDvcMIdQN6wdz5ojQiOy6YRMuynxenON0O5oCpJI6lshc6scgAY8qvJ2On/p+CXY0GA==",
+      "license": "MIT",
+      "dependencies": {
+        "pg-int8": "1.0.1",
+        "postgres-array": "~2.0.0",
+        "postgres-bytea": "~1.0.0",
+        "postgres-date": "~1.0.4",
+        "postgres-interval": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/pgpass": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.5.tgz",
+      "integrity": "sha512-FdW9r/jQZhSeohs1Z3sI1yxFQNFvMcnmfuj4WBMUTxOrAyLMaTcE1aAMBiTlbMNaXvBCQuVi0R7hd8udDSP7ug==",
+      "license": "MIT",
+      "dependencies": {
+        "split2": "^4.1.0"
+      }
+    },
    "node_modules/picocolors": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -3021,6 +3111,45 @@
        "node": "^10 || ^12 || >=14"
      }
    },
+    "node_modules/postgres-array": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-array/-/postgres-array-2.0.0.tgz",
+      "integrity": "sha512-VpZrUqU5A69eQyW2c5CA1jtLecCsN2U/bD6VilrFDWq5+5UIEVO7nazS3TEcHf1zuPYO/sqGvUvW62g86RXZuA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/postgres-bytea": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-1.0.1.tgz",
+      "integrity": "sha512-5+5HqXnsZPE65IJZSMkZtURARZelel2oXUEO8rH83VS/hxH5vv1uHquPg5wZs8yMAfdv971IU+kcPUczi7NVBQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-date": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.7.tgz",
+      "integrity": "sha512-suDmjLVQg78nMK2UZ454hAG+OAW+HQPZ6n++TNDUX+L0+uUlLywnoxJKDou51Zm+zTCjrCl0Nq6J9C5hP9vK/Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-interval": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/postgres-interval/-/postgres-interval-1.2.0.tgz",
+      "integrity": "sha512-9ZhXKM/rw350N1ovuWHbGxnGh/SNJ4cnxHiM0rxE4VN41wsg8P8zWn9hv/buK00RP4WvlOyr/RBDiptyxVbkZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "xtend": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
    "node_modules/prelude-ls": {
      "version": "1.2.1",
      "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz",
@@ -3178,6 +3307,15 @@
        "node": ">=0.10.0"
      }
    },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
    "node_modules/strip-json-comments": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
@@ -3392,6 +3530,15 @@
        "node": ">=0.10.0"
      }
    },
+    "node_modules/xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4"
+      }
+    },
    "node_modules/yallist": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
@@ -14,9 +14,10 @@
  "dependencies": {
    "@tailwindcss/vite": "^4.1.8",
    "@vitejs/plugin-react": "^4.5.0",
-    "vite": "^6.3.5",
+    "pg": "^8.20.0",
    "react": "^19.1.0",
-    "react-dom": "^19.1.0"
+    "react-dom": "^19.1.0",
+    "vite": "^6.3.5"
  },
  "devDependencies": {
    "@eslint/js": "^9.27.0",
@@ -1,10 +1,45 @@
 const fs = require('node:fs')
 const http = require('node:http')
+const https = require('node:https')
 const path = require('node:path')
+const { Pool } = require('pg')
+
+function loadEnvFile() {
+  const envPath = path.join(__dirname, '.env')
+  if (!fs.existsSync(envPath)) return
+
+  const lines = fs.readFileSync(envPath, 'utf8').split(/\r?\n/)
+  for (const line of lines) {
+    const trimmed = line.trim()
+    if (!trimmed || trimmed.startsWith('#')) continue
+
+    const separatorIndex = trimmed.indexOf('=')
+    if (separatorIndex === -1) continue
+
+    const key = trimmed.slice(0, separatorIndex).trim()
+    let value = trimmed.slice(separatorIndex + 1).trim()
+
+    if (
+      (value.startsWith('"') && value.endsWith('"')) ||
+      (value.startsWith("'") && value.endsWith("'"))
+    ) {
+      value = value.slice(1, -1)
+    }
+
+    if (key && (!process.env[key] || process.env[key] === '')) {
+      process.env[key] = value
+    }
+  }
+}
+
+loadEnvFile()

 const PORT = Number(process.env.PORT || 3001)
 const API_UPSTREAM = process.env.API_UPSTREAM || 'http://127.0.0.1:6000'
 const PUBLIC_ORIGIN = process.env.PUBLIC_ORIGIN || ''
+const UPTIME_DATABASE_URL = process.env.UPTIME_DATABASE_URL || process.env.DATABASE_URL || ''
+const UPTIME_SAMPLE_INTERVAL_MS = Number(process.env.UPTIME_SAMPLE_INTERVAL_MS || 30 * 60 * 1000)
+const UPTIME_HISTORY_LIMIT = Number(process.env.UPTIME_HISTORY_LIMIT || 336)
 const API_CACHE_TTL_MS = Number(process.env.API_CACHE_TTL_MS || 15000)
 const API_RATE_LIMIT_WINDOW_MS = Number(process.env.API_RATE_LIMIT_WINDOW_MS || 60000)
 const API_RATE_LIMIT_MAX = Number(process.env.API_RATE_LIMIT_MAX || 120)
@@ -38,11 +73,178 @@ const jsonHeaders = {

 const apiCache = new Map()
 const rateLimits = new Map()
+const uptimePool = UPTIME_DATABASE_URL
+  ? new Pool({
+    connectionString: UPTIME_DATABASE_URL,
+    ssl: process.env.PGSSLMODE === 'require' ? { rejectUnauthorized: false } : undefined,
+  })
+  : null
+let uptimeReady = false
+let latestUptimeSnapshot = null

 function sendJson(res, status, body, headers = {}) {
  send(res, status, JSON.stringify(body), { ...jsonHeaders, ...headers })
 }

+function requestJson(url, timeoutMs = 10000) {
+  return new Promise((resolve, reject) => {
+    const target = new URL(url)
+    const client = target.protocol === 'https:' ? https : http
+    const startedAt = Date.now()
+    const req = client.request(
+      target,
+      {
+        method: 'GET',
+        headers: {
+          accept: 'application/json',
+          'user-agent': 'tssbot-uptime-sampler',
+        },
+        timeout: timeoutMs,
+      },
+      (response) => {
+        const chunks = []
+
+        response.on('data', (chunk) => chunks.push(chunk))
+        response.on('end', () => {
+          const body = Buffer.concat(chunks).toString('utf8')
+          const latency = Date.now() - startedAt
+
+          if ((response.statusCode || 0) < 200 || (response.statusCode || 0) >= 300) {
+            reject(new Error(`HTTP ${response.statusCode || 0}`))
+            return
+          }
+
+          try {
+            resolve({ body: body ? JSON.parse(body) : null, latency })
+          } catch {
+            resolve({ body: null, latency })
+          }
+        })
+      },
+    )
+
+    req.on('timeout', () => {
+      req.destroy(new Error(`Request timed out after ${timeoutMs}ms`))
+    })
+    req.on('error', reject)
+    req.end()
+  })
+}
+
+async function ensureUptimeSchema() {
+  if (!uptimePool || uptimeReady) return Boolean(uptimePool)
+
+  await uptimePool.query(`
+    create table if not exists uptime_snapshots (
+      id bigserial primary key,
+      checked_at timestamptz not null default now(),
+      website_ok boolean not null,
+      health_ok boolean not null,
+      tss_ok boolean not null,
+      ok boolean not null,
+      latency_ms integer not null,
+      details jsonb not null default '{}'::jsonb
+    )
+  `)
+  await uptimePool.query(`
+    create index if not exists uptime_snapshots_checked_at_idx
+      on uptime_snapshots (checked_at desc)
+  `)
+
+  uptimeReady = true
+  return true
+}
+
+async function takeUptimeSnapshot() {
+  const startedAt = Date.now()
+  const details = {
+    website: { label: 'Online' },
+    health: { label: 'Operational' },
+    tss: { label: 'Not checked' },
+  }
+
+  const websiteOk = fs.existsSync(path.join(DIST_DIR, 'index.html'))
+  if (!websiteOk) details.website.label = 'Build not found'
+
+  const healthOk = true
+
+  let tssOk = false
+  try {
+    const tssUrl = new URL('/api/tss/leaderboard/teams?limit=1', API_UPSTREAM)
+    const result = await requestJson(tssUrl.toString())
+    const teamCount = result.body?.teams?.length || result.body?.squadrons?.length || 0
+    tssOk = true
+    details.tss = {
+      label: `${teamCount} sample team${teamCount === 1 ? '' : 's'} returned`,
+      latency_ms: result.latency,
+    }
+  } catch (error) {
+    details.tss = { label: error.message }
+  }
+
+  const snapshot = {
+    checked_at: new Date().toISOString(),
+    website_ok: websiteOk,
+    health_ok: healthOk,
+    tss_ok: tssOk,
+    ok: websiteOk && healthOk && tssOk,
+    latency_ms: Date.now() - startedAt,
+    details,
+  }
+
+  latestUptimeSnapshot = snapshot
+
+  if (uptimePool) {
+    await ensureUptimeSchema()
+    await uptimePool.query(
+      `insert into uptime_snapshots
+        (website_ok, health_ok, tss_ok, ok, latency_ms, details)
+       values ($1, $2, $3, $4, $5, $6)`,
+      [snapshot.website_ok, snapshot.health_ok, snapshot.tss_ok, snapshot.ok, snapshot.latency_ms, snapshot.details],
+    )
+  }
+
+  return snapshot
+}
+
+async function uptimeHistory() {
+  if (!uptimePool) {
+    return {
+      configured: false,
+      latest: latestUptimeSnapshot,
+      history: latestUptimeSnapshot ? [latestUptimeSnapshot] : [],
+    }
+  }
+
+  await ensureUptimeSchema()
+  const result = await uptimePool.query(
+    `select checked_at, website_ok, health_ok, tss_ok, ok, latency_ms, details
+       from uptime_snapshots
+      order by checked_at desc
+      limit $1`,
+    [UPTIME_HISTORY_LIMIT],
+  )
+  const history = result.rows.reverse()
+
+  return {
+    configured: true,
+    latest: history.at(-1) || latestUptimeSnapshot,
+    history,
+  }
+}
+
+function startUptimeSampler() {
+  takeUptimeSnapshot().catch((error) => {
+    console.error('Initial uptime snapshot failed:', error)
+  })
+
+  setInterval(() => {
+    takeUptimeSnapshot().catch((error) => {
+      console.error('Uptime snapshot failed:', error)
+    })
+  }, UPTIME_SAMPLE_INTERVAL_MS).unref()
+}
+
 function publicOrigins(req) {
  const origins = PUBLIC_ORIGIN.split(',')
    .map((origin) => origin.trim())
@@ -266,6 +468,13 @@ http
      return
    }

+    if (req.method === 'GET' && req.url === '/api/uptime') {
+      uptimeHistory()
+        .then((data) => sendJson(res, 200, data))
+        .catch((error) => sendJson(res, 500, { error: 'Uptime history unavailable', detail: error.message }))
+      return
+    }
+
    if (req.method === 'OPTIONS' && req.url.startsWith('/api/')) {
      sendJson(res, 403, { error: 'CORS requests are not allowed' })
      return
@@ -281,4 +490,10 @@ http
  .listen(PORT, '0.0.0.0', () => {
    console.log(`tssbot-web serving http://localhost:${PORT}`)
    console.log(`proxying API requests to ${API_UPSTREAM}`)
+    console.log(
+      uptimePool
+        ? `sampling uptime every ${Math.round(UPTIME_SAMPLE_INTERVAL_MS / 60000)} minutes`
+        : 'uptime database disabled; set DATABASE_URL or UPTIME_DATABASE_URL to persist snapshots',
+    )
+    startUptimeSampler()
  })
@@ -10,6 +10,7 @@ const dateFormat = new Intl.DateTimeFormat('en-GB', {

 const apiEndpoints = {
  health: '/health',
+  uptime: '/api/uptime',
  teams: '/api/tss/leaderboard/teams?limit=100',
  teamsHealth: '/api/tss/leaderboard/teams?limit=1',
  resolve: (name) => `/api/tss/teams/resolve?name=${encodeURIComponent(name)}`,
@@ -322,7 +323,7 @@ function App() {

    const controller = new AbortController()

-    async function checkUptime() {
+    async function loadUptime() {
      setUptime((current) => ({
        status: current.status === 'ready' ? 'refreshing' : 'loading',
        checks: current.checks,
@@ -330,65 +331,85 @@ function App() {
        updatedAt: current.updatedAt,
      }))

-      const startedAt = performance.now()
-      const healthResult = await fetchJson(apiEndpoints.health, controller.signal)
-        .then(() => ({ ok: true, label: 'Operational' }))
-        .catch((error) => ({ ok: false, label: error.message }))
-
-      const apiResult = await fetchJson(apiEndpoints.teamsHealth, controller.signal)
+      fetchJson(apiEndpoints.uptime, controller.signal)
        .then((data) => {
-          const teamCount = data.teams?.length || data.squadrons?.length || 0
-          return { ok: true, label: `${teamCount} sample team${teamCount === 1 ? '' : 's'} returned` }
+          const latest = data.latest
+          const checks = latest
+            ? [
+              {
+                name: 'Website',
+                detail: 'App shell and static assets',
+                ok: latest.website_ok,
+                label: latest.details?.website?.label || (latest.website_ok ? 'Online' : 'Issue'),
+                latency: latest.latency_ms,
+              },
+              {
+                name: 'Health endpoint',
+                detail: apiEndpoints.health,
+                ok: latest.health_ok,
+                label: latest.details?.health?.label || (latest.health_ok ? 'Operational' : 'Issue'),
+                latency: latest.latency_ms,
+              },
+              {
+                name: 'TSS data proxy',
+                detail: apiEndpoints.teamsHealth,
+                ok: latest.tss_ok,
+                label: latest.details?.tss?.label || (latest.tss_ok ? 'Operational' : 'Issue'),
+                latency: latest.details?.tss?.latency_ms || latest.latency_ms,
+              },
+            ]
+            : []
+
+          setUptime({
+            status: 'ready',
+            checks,
+            history: (data.history || []).map((sample) => ({
+              timestamp: new Date(sample.checked_at).getTime(),
+              onlineChecks: [sample.website_ok, sample.health_ok, sample.tss_ok].filter(Boolean).length,
+              totalChecks: 3,
+              ok: sample.ok,
+            })),
+            updatedAt: latest ? new Date(latest.checked_at).getTime() : null,
+            configured: data.configured,
+          })
        })
-        .catch((error) => ({ ok: false, label: error.message }))
+        .catch((error) => {
+          if (controller.signal.aborted) return

-      if (controller.signal.aborted) return
-
-      setUptime((current) => {
-        const checks = [
-          {
-            name: 'Website',
-            detail: 'App shell and static assets',
-            ok: true,
-            label: 'Online',
-            latency: Math.round(performance.now() - startedAt),
-          },
-          {
-            name: 'Health endpoint',
-            detail: apiEndpoints.health,
-            ok: healthResult.ok,
-            label: healthResult.label,
-            latency: Math.round(performance.now() - startedAt),
-          },
-          {
-            name: 'TSS data proxy',
-            detail: apiEndpoints.teamsHealth,
-            ok: apiResult.ok,
-            label: apiResult.label,
-            latency: Math.round(performance.now() - startedAt),
-          },
-        ]
-        const onlineChecks = checks.filter((check) => check.ok).length
-
-        return {
-          status: 'ready',
-          updatedAt: Date.now(),
-          checks,
-          history: [
-            ...current.history,
-            {
-              timestamp: Date.now(),
-              onlineChecks,
-              totalChecks: checks.length,
-              ok: onlineChecks === checks.length,
-            },
-          ].slice(-48),
-        }
-      })
+          setUptime({
+            status: 'error',
+            updatedAt: null,
+            configured: false,
+            history: [],
+            checks: [
+              {
+                name: 'Website',
+                detail: 'App shell and static assets',
+                ok: true,
+                label: 'Online',
+                latency: 0,
+              },
+              {
+                name: 'Health endpoint',
+                detail: apiEndpoints.health,
+                ok: false,
+                label: error.message,
+                latency: 0,
+              },
+              {
+                name: 'TSS data proxy',
+                detail: apiEndpoints.teamsHealth,
+                ok: false,
+                label: 'Uptime history unavailable',
+                latency: 0,
+              },
+            ],
+          })
+        })
    }

-    checkUptime()
-    const timer = window.setInterval(checkUptime, 30000)
+    loadUptime()
+    const timer = window.setInterval(loadUptime, 60000)

    return () => {
      window.clearInterval(timer)
@@ -1093,7 +1114,7 @@ function UptimePage({ uptime }) {
              {allOperational ? 'All systems operational' : 'Status check'}
            </h1>
            <p className="mt-2 text-sm text-text-soft">
-              Last checked {updatedAt}. Refreshes every 30 seconds while this page is open.
+              Last server snapshot {updatedAt}. The page refreshes once a minute.
            </p>
          </div>
          <span
@@ -1112,7 +1133,7 @@ function UptimePage({ uptime }) {
          <div>
            <h2 className="text-lg font-semibold">Availability timeline</h2>
            <p className="mt-1 text-sm text-text-soft">
-              Last {formatNumber(history.length)} checks from this browser session
+              Last {formatNumber(history.length)} persisted server snapshots
            </p>
          </div>
          <p className="text-sm font-semibold text-fury-cyan">