feat: update vps-panel backup and notification features

src/lib/notify.ts

@@ -0,0 +1,52 @@
+import { getNotificationSettings, NotificationSettings } from './appDb'
+
+export async function sendStatusAlert(
+  siteName: string,
+  siteUrl: string,
+  oldStatus: string,
+  newStatus: string,
+  ms: number | null
+) {
+  let settings: NotificationSettings | null
+  try {
+    settings = await getNotificationSettings()
+  } catch {
+    return
+  }
+  if (!settings || !settings.enabled) return
+
+  const isDown = newStatus !== 'up'
+  const emoji = newStatus === 'up' ? '✅' : newStatus === 'degraded' ? '⚠️' : '🔴'
+  const statusLabel = newStatus === 'up' ? 'Düzeldi (UP)' : newStatus === 'degraded' ? 'Yavaş (DEGRADED)' : 'Çöktü (DOWN)'
+  const msText = ms ? ` — ${ms}ms` : ''
+
+  const text = `${emoji} *${siteName}*\nDurum: ${statusLabel}${msText}\nURL: ${siteUrl}`
+
+  if (settings.webhook_url) {
+    fetch(settings.webhook_url, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        text,
+        site: siteName,
+        url: siteUrl,
+        status: newStatus,
+        previous_status: oldStatus,
+        ms,
+        timestamp: new Date().toISOString(),
+      }),
+    }).catch(() => {})
+  }
+
+  if (settings.telegram_token && settings.telegram_chat_id) {
+    fetch(`https://api.telegram.org/bot${settings.telegram_token}/sendMessage`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        chat_id: settings.telegram_chat_id,
+        text: `🔔 *VPS Panel*\n\n${text}`,
+        parse_mode: 'Markdown',
+      }),
+    }).catch(() => {})
+  }
+}