fix: push notifications — urlBase64ToUint8Array bug, add PushBanner prompt

src/components/PushBanner.tsx

@@ -0,0 +1,73 @@
+import { useState, useEffect } from 'react'
+import { Bell, X } from 'lucide-react'
+import { isPushSupported, subscribeToPush } from '../lib/push'
+import { api } from '../lib/api'
+
+const DISMISSED_KEY = 'hotelsync-push-banner-dismissed'
+
+export function PushBanner() {
+  const [visible, setVisible] = useState(false)
+  const [loading, setLoading] = useState(false)
+
+  useEffect(() => {
+    if (!isPushSupported()) return
+    if (typeof Notification === 'undefined') return
+    if (Notification.permission !== 'default') return
+    if (localStorage.getItem(DISMISSED_KEY)) return
+    // Show after 3s so the UI settles
+    const t = setTimeout(() => setVisible(true), 3000)
+    return () => clearTimeout(t)
+  }, [])
+
+  if (!visible) return null
+
+  const dismiss = () => {
+    setVisible(false)
+    localStorage.setItem(DISMISSED_KEY, '1')
+  }
+
+  const enable = async () => {
+    setLoading(true)
+    try {
+      const result = await Notification.requestPermission()
+      if (result === 'granted') {
+        const { publicKey } = await api.push.getVapidKey()
+        if (publicKey) {
+          const sub = await subscribeToPush(publicKey)
+          if (sub) {
+            const json = sub.toJSON()
+            if (json.endpoint && json.keys?.p256dh && json.keys?.auth) {
+              await api.push.subscribe({ endpoint: json.endpoint, p256dh: json.keys.p256dh, auth: json.keys.auth })
+            }
+          }
+        }
+      }
+    } catch { /**/ }
+    finally {
+      setLoading(false)
+      dismiss()
+    }
+  }
+
+  return (
+    <div className="fixed bottom-24 left-4 right-24 z-40 max-w-xs">
+      <div className="bg-slate-800 dark:bg-slate-900 text-white rounded-2xl shadow-xl px-4 py-3 flex items-center gap-3">
+        <div className="w-8 h-8 rounded-full bg-brand-600 flex items-center justify-center shrink-0">
+          <Bell size={15} />
+        </div>
+        <p className="flex-1 text-sm leading-snug">
+          Включите уведомления, чтобы не пропускать сообщения
+        </p>
+        <div className="flex items-center gap-2 shrink-0">
+          <button onClick={enable} disabled={loading}
+            className="text-xs font-semibold text-brand-300 hover:text-brand-200 disabled:opacity-50 transition-colors whitespace-nowrap">
+            {loading ? '...' : 'Включить'}
+          </button>
+          <button onClick={dismiss} className="text-slate-400 hover:text-white transition-colors">
+            <X size={14} />
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}

src/layouts/AppLayout.tsx

@@ -3,6 +3,7 @@ import { useState, useEffect } from 'react'
 import { Sidebar } from '../components/layout/Sidebar'
 import { Topbar } from '../components/layout/Topbar'
 import { ChatWidget } from '../components/chat/ChatWidget'
+import { PushBanner } from '../components/PushBanner'
 import { useAuth } from '../contexts/AuthContext'
 
 export function AppLayout() {
@@ -34,6 +35,7 @@ export function AppLayout() {
       </div>
 
       {!chatHidden && <ChatWidget />}
+      <PushBanner />
     </div>
   )
 }

src/lib/push.ts

@@ -1,9 +1,8 @@
-function urlBase64ToUint8Array(base64String: string): ArrayBuffer {
+function urlBase64ToUint8Array(base64String: string): Uint8Array {
   const padding = '='.repeat((4 - (base64String.length % 4)) % 4)
   const base64 = (base64String + padding).replace(/-/g, '+').replace(/_/g, '/')
   const rawData = window.atob(base64)
-  const arr = new Uint8Array([...rawData].map(char => char.charCodeAt(0)))
-  return arr.buffer as ArrayBuffer
+  return new Uint8Array([...rawData].map(char => char.charCodeAt(0)))
 }
 
 export async function registerSW(): Promise<ServiceWorkerRegistration | null> {
@@ -22,7 +21,7 @@ export async function subscribeToPush(vapidPublicKey: string): Promise<PushSubsc
     if (existing) return existing
     return await reg.pushManager.subscribe({
       userVisibleOnly: true,
-      applicationServerKey: urlBase64ToUint8Array(vapidPublicKey),
+      applicationServerKey: urlBase64ToUint8Array(vapidPublicKey) as unknown as ArrayBuffer,
     })
   } catch { return null }
 }