Enhance AirPage and ChannelPlayer components: add error handling for unavailable streams, implement retry functionality, and update translations for offline states. Refactor ChannelPlayer to accept an onUnavailable callback for better error management.

frontend/src/features/streaming/AirPage.tsx

@@ -1,10 +1,11 @@
 import { useQuery } from '@tanstack/react-query'
-import { useEffect, useMemo, useState } from 'react'
+import { useCallback, useEffect, useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
-import { Radio } from 'lucide-react'
+import { Radio, RotateCw } from 'lucide-react'
 import type { ScheduleEntryDto } from '@/shared/api/types'
 import { cn } from '@/shared/lib/cn'
 import { Badge } from '@/shared/ui/badge'
+import { Button } from '@/shared/ui/button'
 import { ChannelPlayer } from './ChannelPlayer'
 import { getEpg, listChannels, watchChannel } from './api'
 
@@ -16,6 +17,14 @@ export function AirPage() {
   const { t } = useTranslation()
   const [selected, setSelected] = useState<string | null>(null)
   const [watchReady, setWatchReady] = useState(false)
+  const [playerError, setPlayerError] = useState(false)
+  const [attempt, setAttempt] = useState(0)
+
+  const handleUnavailable = useCallback(() => setPlayerError(true), [])
+  const retry = () => {
+    setPlayerError(false)
+    setAttempt((a) => a + 1)
+  }
 
   const { data: channels, isLoading } = useQuery({
     queryKey: ['air', 'channels'],
@@ -29,6 +38,7 @@ export function AirPage() {
   useEffect(() => {
     if (!selected) return
     setWatchReady(false)
+    setPlayerError(false)
     let cancelled = false
     void watchChannel(selected)
       .then(() => {
@@ -87,7 +97,25 @@ export function AirPage() {
 
         <div className="flex flex-col gap-4">
           {selected && watchReady ? (
-            <ChannelPlayer slug={selected} />
+            playerError ? (
+              <div className="crt-panel flex aspect-video w-full flex-col items-center justify-center gap-3 rounded-md text-center">
+                <Radio className="h-10 w-10 text-muted-foreground" strokeWidth={1} />
+                <div className="flex flex-col gap-1">
+                  <p className="font-medium">{t('air.offline')}</p>
+                  <p className="text-sm text-muted-foreground">{t('air.offlineHint')}</p>
+                </div>
+                <Button size="sm" variant="outline" onClick={retry}>
+                  <RotateCw className="h-4 w-4" />
+                  {t('air.retry')}
+                </Button>
+              </div>
+            ) : (
+              <ChannelPlayer
+                key={`${selected}-${attempt}`}
+                slug={selected}
+                onUnavailable={handleUnavailable}
+              />
+            )
           ) : (
             <div className="aspect-video w-full animate-pulse rounded-md border border-border bg-black" />
           )}

frontend/src/features/streaming/ChannelPlayer.tsx

@@ -1,21 +1,24 @@
 import Hls from 'hls.js'
-import { useEffect, useRef, useState } from 'react'
-import { useTranslation } from 'react-i18next'
+import { useEffect, useRef } from 'react'
 
 /**
  * HLS-плеер канала. Cookie tw_stream (см. watchChannel) уже выдана к моменту монтирования, поэтому
  * запросы плейлиста/сегментов авторизуются автоматически. hls.js для всех браузеров, нативный HLS —
- * фолбэк для Safari/iOS.
+ * фолбэк для Safari/iOS. О фатальной ошибке (нет эфира / 503) сообщает через onUnavailable —
+ * страница показывает аккуратную заглушку вместо сломанного видео.
  */
-export function ChannelPlayer({ slug }: { slug: string }) {
+export function ChannelPlayer({
+  slug,
+  onUnavailable,
+}: {
+  slug: string
+  onUnavailable?: () => void
+}) {
   const videoRef = useRef<HTMLVideoElement>(null)
-  const { t } = useTranslation()
-  const [error, setError] = useState<string | null>(null)
 
   useEffect(() => {
     const video = videoRef.current
     if (!video) return
-    setError(null)
     const src = `/api/channels/${slug}/live.m3u8`
     let hls: Hls | null = null
 
@@ -25,31 +28,32 @@ export function ChannelPlayer({ slug }: { slug: string }) {
       hls.attachMedia(video)
       hls.on(Hls.Events.MANIFEST_PARSED, () => void video.play().catch(() => undefined))
       hls.on(Hls.Events.ERROR, (_event, data) => {
-        if (data.fatal) setError(t('air.playbackError'))
+        if (data.fatal) {
+          hls?.destroy()
+          hls = null
+          onUnavailable?.()
+        }
       })
     } else if (video.canPlayType('application/vnd.apple.mpegurl')) {
       video.src = src
       video.addEventListener('loadedmetadata', () => void video.play().catch(() => undefined))
-      video.addEventListener('error', () => setError(t('air.playbackError')))
+      video.addEventListener('error', () => onUnavailable?.())
     } else {
-      setError(t('air.unsupported'))
+      onUnavailable?.()
     }
 
     return () => {
       hls?.destroy()
     }
-  }, [slug, t])
+  }, [slug, onUnavailable])
 
   return (
-    <div className="flex flex-col gap-2">
-      <video
-        ref={videoRef}
-        controls
-        playsInline
-        muted
-        className="aspect-video w-full rounded-md border border-border bg-black"
-      />
-      {error && <p className="text-sm text-red-500">{error}</p>}
-    </div>
+    <video
+      ref={videoRef}
+      controls
+      playsInline
+      muted
+      className="aspect-video w-full rounded-md border border-border bg-black"
+    />
   )
 }

frontend/src/shared/lib/i18n.ts

@@ -63,8 +63,9 @@ const resources = {
         ad: 'Реклама',
         episode: 'Серия',
         noChannels: 'Пока нет доступных каналов. Загляните позже.',
-        playbackError: 'Не удалось воспроизвести поток',
-        unsupported: 'Браузер не поддерживает воспроизведение HLS',
+        offline: 'Канал сейчас не в эфире',
+        offlineHint: 'Нет расписания или контента. Загляните позже.',
+        retry: 'Повторить',
       },
       settings: {
         title: 'Настройки аккаунта',
@@ -230,8 +231,9 @@ const resources = {
         ad: 'Ad',
         episode: 'Episode',
         noChannels: 'No channels available yet. Check back later.',
-        playbackError: 'Failed to play the stream',
-        unsupported: 'This browser cannot play HLS',
+        offline: 'This channel is off the air',
+        offlineHint: 'No schedule or content yet. Check back later.',
+        retry: 'Retry',
       },
       settings: {
         title: 'Account settings',