remake send push systems

frontend/src/pages/admin/AdminBroadcastPage.tsx

@@ -1,9 +1,34 @@
-import { useState, useEffect } from 'react'
+import { useState, useEffect, useMemo, useRef, useCallback } from 'react'
 import { adminApi } from '@/api'
 import type { AdminMarathon } from '@/types'
 import { useToast } from '@/store/toast'
 import { NeonButton } from '@/components/ui'
-import { Send, Users, Trophy, AlertTriangle } from 'lucide-react'
+import { Send, Users, Trophy, AlertTriangle, Search, Eye, MessageSquare, ChevronDown, X } from 'lucide-react'
+
+// Telegram supported tags for reference
+const TELEGRAM_TAGS = [
+  { tag: '<b>', description: 'Жирный текст', example: '<b>жирный</b>' },
+  { tag: '<i>', description: 'Курсив', example: '<i>курсив</i>' },
+  { tag: '<u>', description: 'Подчёркнутый', example: '<u>подчёркнутый</u>' },
+  { tag: '<s>', description: 'Зачёркнутый', example: '<s>зачёркнутый</s>' },
+  { tag: '<code>', description: 'Моноширинный', example: '<code>код</code>' },
+  { tag: '<pre>', description: 'Блок кода', example: '<pre>блок кода</pre>' },
+  { tag: '<a>', description: 'Ссылка', example: '<a href="url">текст</a>' },
+  { tag: '<tg-spoiler>', description: 'Спойлер', example: '<tg-spoiler>скрытый текст</tg-spoiler>' },
+  { tag: '<blockquote>', description: 'Цитата', example: '<blockquote>цитата</blockquote>' },
+]
+
+// Convert Telegram HTML to web-safe HTML for preview
+function telegramToHtml(text: string): string {
+  let html = text
+    // Convert tg-spoiler to span with blur effect
+    .replace(/<tg-spoiler>/g, '<span class="tg-spoiler">')
+    .replace(/<\/tg-spoiler>/g, '</span>')
+    // Convert newlines to <br> tags (but not inside <pre> blocks)
+    .replace(/\n/g, '<br>')
+
+  return html
+}
 
 export function AdminBroadcastPage() {
   const [message, setMessage] = useState('')
@@ -12,11 +37,26 @@ export function AdminBroadcastPage() {
   const [marathons, setMarathons] = useState<AdminMarathon[]>([])
   const [sending, setSending] = useState(false)
   const [loadingMarathons, setLoadingMarathons] = useState(false)
+  const [marathonSearch, setMarathonSearch] = useState('')
+  const [statusFilter, setStatusFilter] = useState<'all' | 'active' | 'preparing' | 'finished'>('all')
+  const [showTagsHelp, setShowTagsHelp] = useState(false)
+
+  // Undo/Redo history
+  const [history, setHistory] = useState<string[]>([''])
+  const [historyIndex, setHistoryIndex] = useState(0)
+  const isUndoRedo = useRef(false)
+  const textareaRef = useRef<HTMLTextAreaElement>(null)
 
   const toast = useToast()
 
+  // Load marathons on mount and when switching to marathon target
   useEffect(() => {
-    if (targetType === 'marathon') {
+    // Always load marathons on mount so they're ready when user switches
+    loadMarathons()
+  }, [])
+
+  useEffect(() => {
+    if (targetType === 'marathon' && marathons.length === 0) {
       loadMarathons()
     }
   }, [targetType])
@@ -24,15 +64,86 @@ export function AdminBroadcastPage() {
   const loadMarathons = async () => {
     setLoadingMarathons(true)
     try {
-      const data = await adminApi.listMarathons(0, 100)
-      setMarathons(data.filter(m => m.status === 'active'))
+      const data = await adminApi.listMarathons(0, 200)
+      console.log('Loaded marathons:', data)
+      setMarathons(data)
     } catch (err) {
       console.error('Failed to load marathons:', err)
+      toast.error('Ошибка загрузки марафонов')
     } finally {
       setLoadingMarathons(false)
     }
   }
 
+  // Handle message change with history
+  const handleMessageChange = useCallback((newValue: string) => {
+    if (isUndoRedo.current) {
+      isUndoRedo.current = false
+      return
+    }
+
+    setMessage(newValue)
+
+    // Add to history (debounced - only if different from last entry)
+    setHistory(prev => {
+      const newHistory = prev.slice(0, historyIndex + 1)
+      if (newHistory[newHistory.length - 1] !== newValue) {
+        return [...newHistory, newValue]
+      }
+      return newHistory
+    })
+    setHistoryIndex(prev => prev + 1)
+  }, [historyIndex])
+
+  // Undo function
+  const undo = useCallback(() => {
+    if (historyIndex > 0) {
+      isUndoRedo.current = true
+      const newIndex = historyIndex - 1
+      setHistoryIndex(newIndex)
+      setMessage(history[newIndex])
+    }
+  }, [history, historyIndex])
+
+  // Redo function
+  const redo = useCallback(() => {
+    if (historyIndex < history.length - 1) {
+      isUndoRedo.current = true
+      const newIndex = historyIndex + 1
+      setHistoryIndex(newIndex)
+      setMessage(history[newIndex])
+    }
+  }, [history, historyIndex])
+
+  // Handle keyboard shortcuts
+  const handleKeyDown = useCallback((e: React.KeyboardEvent<HTMLTextAreaElement>) => {
+    if (e.ctrlKey || e.metaKey) {
+      if (e.key === 'z') {
+        e.preventDefault()
+        if (e.shiftKey) {
+          redo()
+        } else {
+          undo()
+        }
+      } else if (e.key === 'y') {
+        e.preventDefault()
+        redo()
+      }
+    }
+  }, [undo, redo])
+
+  // Filter marathons based on search and status
+  const filteredMarathons = useMemo(() => {
+    return marathons.filter(m => {
+      const matchesSearch = !marathonSearch ||
+        m.title.toLowerCase().includes(marathonSearch.toLowerCase())
+      const matchesStatus = statusFilter === 'all' || m.status === statusFilter
+      return matchesSearch && matchesStatus
+    })
+  }, [marathons, marathonSearch, statusFilter])
+
+  const selectedMarathon = marathons.find(m => m.id === marathonId)
+
   const handleSend = async () => {
     if (!message.trim()) {
       toast.error('Введите сообщение')
@@ -63,6 +174,39 @@ export function AdminBroadcastPage() {
     }
   }
 
+  const getStatusBadge = (status: string) => {
+    const config = {
+      active: { label: 'Активен', class: 'bg-green-500/20 text-green-400 border-green-500/30' },
+      preparing: { label: 'Подготовка', class: 'bg-yellow-500/20 text-yellow-400 border-yellow-500/30' },
+      finished: { label: 'Завершён', class: 'bg-gray-500/20 text-gray-400 border-gray-500/30' },
+    }
+    const c = config[status as keyof typeof config] || config.finished
+    return (
+      <span className={`text-xs px-2 py-0.5 rounded border ${c.class}`}>
+        {c.label}
+      </span>
+    )
+  }
+
+  const insertTag = (openTag: string, closeTag: string) => {
+    const textarea = textareaRef.current
+    if (!textarea) return
+
+    const start = textarea.selectionStart
+    const end = textarea.selectionEnd
+    const selectedText = message.substring(start, end)
+    const newText = message.substring(0, start) + openTag + selectedText + closeTag + message.substring(end)
+
+    handleMessageChange(newText)
+
+    // Restore cursor position
+    setTimeout(() => {
+      textarea.focus()
+      const newCursorPos = start + openTag.length + selectedText.length
+      textarea.setSelectionRange(newCursorPos, newCursorPos)
+    }, 0)
+  }
+
   return (
     <div className="space-y-6">
       {/* Header */}
@@ -73,118 +217,401 @@ export function AdminBroadcastPage() {
         <h1 className="text-2xl font-bold text-white">Рассылка уведомлений</h1>
       </div>
 
-      <div className="max-w-2xl space-y-6">
-        {/* Target Selection */}
-        <div className="space-y-3">
-          <label className="block text-sm font-medium text-gray-300">
-            Кому отправить
-          </label>
-          <div className="flex gap-4">
-            <button
-              onClick={() => {
-                setTargetType('all')
-                setMarathonId(null)
-              }}
-              className={`flex-1 flex items-center justify-center gap-3 p-4 rounded-xl border transition-all duration-200 ${
-                targetType === 'all'
-                  ? 'bg-accent-500/20 border-accent-500/50 text-accent-400 shadow-[0_0_15px_rgba(139,92,246,0.15)]'
-                  : 'bg-dark-700/50 border-dark-600 text-gray-400 hover:border-dark-500 hover:text-gray-300'
-              }`}
-            >
-              <Users className="w-5 h-5" />
-              <span className="font-medium">Всем пользователям</span>
-            </button>
-            <button
-              onClick={() => setTargetType('marathon')}
-              className={`flex-1 flex items-center justify-center gap-3 p-4 rounded-xl border transition-all duration-200 ${
-                targetType === 'marathon'
-                  ? 'bg-accent-500/20 border-accent-500/50 text-accent-400 shadow-[0_0_15px_rgba(139,92,246,0.15)]'
-                  : 'bg-dark-700/50 border-dark-600 text-gray-400 hover:border-dark-500 hover:text-gray-300'
-              }`}
-            >
-              <Trophy className="w-5 h-5" />
-              <span className="font-medium">Участникам марафона</span>
-            </button>
-          </div>
-        </div>
-
-        {/* Marathon Selection */}
-        {targetType === 'marathon' && (
-          <div className="space-y-2">
+      <div className="flex gap-6">
+        {/* Left Column - Editor */}
+        <div className="flex-1 space-y-6">
+          {/* Target Selection */}
+          <div className="space-y-3">
             <label className="block text-sm font-medium text-gray-300">
-              Выберите марафон
+              Кому отправить
             </label>
-            {loadingMarathons ? (
-              <div className="animate-pulse bg-dark-700 h-12 rounded-xl" />
-            ) : (
-              <select
-                value={marathonId || ''}
-                onChange={(e) => setMarathonId(Number(e.target.value) || null)}
-                className="w-full bg-dark-700/50 border border-dark-600 rounded-xl px-4 py-3 text-white focus:outline-none focus:border-accent-500/50 transition-colors"
+            <div className="flex gap-4">
+              <button
+                onClick={() => {
+                  setTargetType('all')
+                  setMarathonId(null)
+                }}
+                className={`flex-1 flex items-center justify-center gap-3 p-4 rounded-xl border transition-all duration-200 ${
+                  targetType === 'all'
+                    ? 'bg-accent-500/20 border-accent-500/50 text-accent-400 shadow-[0_0_15px_rgba(139,92,246,0.15)]'
+                    : 'bg-dark-700/50 border-dark-600 text-gray-400 hover:border-dark-500 hover:text-gray-300'
+                }`}
               >
-                <option value="">Выберите марафон...</option>
-                {marathons.map((m) => (
-                  <option key={m.id} value={m.id}>
-                    {m.title} ({m.participants_count} участников)
-                  </option>
-                ))}
-              </select>
-            )}
-            {marathons.length === 0 && !loadingMarathons && (
-              <p className="text-sm text-gray-500">Нет активных марафонов</p>
-            )}
+                <Users className="w-5 h-5" />
+                <span className="font-medium">Всем пользователям</span>
+              </button>
+              <button
+                onClick={() => setTargetType('marathon')}
+                className={`flex-1 flex items-center justify-center gap-3 p-4 rounded-xl border transition-all duration-200 ${
+                  targetType === 'marathon'
+                    ? 'bg-accent-500/20 border-accent-500/50 text-accent-400 shadow-[0_0_15px_rgba(139,92,246,0.15)]'
+                    : 'bg-dark-700/50 border-dark-600 text-gray-400 hover:border-dark-500 hover:text-gray-300'
+                }`}
+              >
+                <Trophy className="w-5 h-5" />
+                <span className="font-medium">Участникам марафона</span>
+              </button>
+            </div>
           </div>
-        )}
 
-        {/* Message */}
-        <div className="space-y-2">
-          <label className="block text-sm font-medium text-gray-300">
-            Сообщение
-          </label>
-          <textarea
-            value={message}
-            onChange={(e) => setMessage(e.target.value)}
-            rows={6}
-            placeholder="Введите текст сообщения... (поддерживается HTML: <b>, <i>, <code>)"
-            className="w-full bg-dark-700/50 border border-dark-600 rounded-xl px-4 py-3 text-white placeholder:text-gray-500 focus:outline-none focus:border-accent-500/50 transition-colors resize-none"
-          />
-          <div className="flex items-center justify-between text-xs">
-            <p className="text-gray-500">
-              Поддерживается HTML: &lt;b&gt;, &lt;i&gt;, &lt;code&gt;, &lt;a href&gt;
-            </p>
-            <p className={`${message.length > 2000 ? 'text-red-400' : 'text-gray-500'}`}>
-              {message.length} / 2000
-            </p>
+          {/* Marathon Selection */}
+          {targetType === 'marathon' && (
+            <div className="space-y-3">
+              <label className="block text-sm font-medium text-gray-300">
+                Выберите марафон
+              </label>
+
+              {/* Search and Filter */}
+              <div className="flex gap-3">
+                <div className="relative flex-1">
+                  <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-gray-500" />
+                  <input
+                    type="text"
+                    placeholder="Поиск по названию..."
+                    value={marathonSearch}
+                    onChange={(e) => setMarathonSearch(e.target.value)}
+                    className="w-full bg-dark-700/50 border border-dark-600 rounded-lg pl-9 pr-3 py-2 text-sm text-white placeholder:text-gray-500 focus:outline-none focus:border-accent-500/50 transition-colors"
+                  />
+                </div>
+                <select
+                  value={statusFilter}
+                  onChange={(e) => setStatusFilter(e.target.value as typeof statusFilter)}
+                  className="bg-dark-700/50 border border-dark-600 rounded-lg px-3 py-2 text-sm text-white focus:outline-none focus:border-accent-500/50 transition-colors"
+                >
+                  <option value="all">Все статусы</option>
+                  <option value="active">Активные</option>
+                  <option value="preparing">Подготовка</option>
+                  <option value="finished">Завершённые</option>
+                </select>
+              </div>
+
+              {/* Marathon List */}
+              {loadingMarathons ? (
+                <div className="animate-pulse bg-dark-700 h-32 rounded-xl" />
+              ) : (
+                <div className="max-h-48 overflow-y-auto rounded-xl border border-dark-600 bg-dark-800/50">
+                  {filteredMarathons.length === 0 ? (
+                    <div className="p-4 text-center text-gray-500 text-sm">
+                      {marathons.length === 0 ? (
+                        <div className="space-y-2">
+                          <p>Не удалось загрузить марафоны</p>
+                          <button
+                            onClick={loadMarathons}
+                            className="text-accent-400 hover:underline"
+                          >
+                            Повторить загрузку
+                          </button>
+                        </div>
+                      ) : (
+                        'Марафоны не найдены по фильтру'
+                      )}
+                    </div>
+                  ) : (
+                    filteredMarathons.map((m) => (
+                      <button
+                        key={m.id}
+                        onClick={() => setMarathonId(marathonId === m.id ? null : m.id)}
+                        className={`w-full flex items-center justify-between p-3 text-left border-b border-dark-600 last:border-b-0 transition-colors ${
+                          marathonId === m.id
+                            ? 'bg-accent-500/20 text-white'
+                            : 'hover:bg-dark-700/50 text-gray-300'
+                        }`}
+                      >
+                        <div className="flex items-center gap-3 min-w-0">
+                          <span className="truncate font-medium">{m.title}</span>
+                          {getStatusBadge(m.status)}
+                        </div>
+                        <span className="text-xs text-gray-500 flex-shrink-0 ml-2">
+                          {m.participants_count} уч.
+                        </span>
+                      </button>
+                    ))
+                  )}
+                </div>
+              )}
+
+              {/* Selected Marathon Info */}
+              {selectedMarathon && (
+                <div className="p-3 bg-accent-500/10 border border-accent-500/30 rounded-lg">
+                  <div className="flex items-center justify-between">
+                    <div className="flex items-center gap-2 text-accent-400">
+                      <Trophy className="w-4 h-4" />
+                      <span className="font-medium">{selectedMarathon.title}</span>
+                      {getStatusBadge(selectedMarathon.status)}
+                    </div>
+                    <button
+                      onClick={() => setMarathonId(null)}
+                      className="p-1 text-gray-400 hover:text-white rounded hover:bg-dark-600/50 transition-colors"
+                      title="Отменить выбор"
+                    >
+                      <X className="w-4 h-4" />
+                    </button>
+                  </div>
+                  <p className="text-sm text-gray-400 mt-1">
+                    {selectedMarathon.participants_count} участников получат сообщение
+                  </p>
+                </div>
+              )}
+            </div>
+          )}
+
+          {/* Message with Tag Toolbar */}
+          <div className="space-y-2">
+            <div className="flex items-center justify-between">
+              <label className="block text-sm font-medium text-gray-300">
+                Сообщение
+              </label>
+              <button
+                onClick={() => setShowTagsHelp(!showTagsHelp)}
+                className="text-xs text-gray-500 hover:text-accent-400 flex items-center gap-1 transition-colors"
+              >
+                <ChevronDown className={`w-3 h-3 transition-transform ${showTagsHelp ? 'rotate-180' : ''}`} />
+                Справка по тегам
+              </button>
+            </div>
+
+            {/* Quick Tag Buttons */}
+            <div className="flex flex-wrap gap-1">
+              <button
+                onClick={() => insertTag('<b>', '</b>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded font-bold transition-colors"
+                title="Жирный"
+              >
+                B
+              </button>
+              <button
+                onClick={() => insertTag('<i>', '</i>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded italic transition-colors"
+                title="Курсив"
+              >
+                I
+              </button>
+              <button
+                onClick={() => insertTag('<u>', '</u>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded underline transition-colors"
+                title="Подчёркнутый"
+              >
+                U
+              </button>
+              <button
+                onClick={() => insertTag('<s>', '</s>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded line-through transition-colors"
+                title="Зачёркнутый"
+              >
+                S
+              </button>
+              <button
+                onClick={() => insertTag('<code>', '</code>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded font-mono transition-colors"
+                title="Код"
+              >
+                {'</>'}
+              </button>
+              <button
+                onClick={() => insertTag('<pre>', '</pre>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded font-mono transition-colors"
+                title="Блок кода"
+              >
+                PRE
+              </button>
+              <button
+                onClick={() => insertTag('<a href="URL">', '</a>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded transition-colors"
+                title="Ссылка"
+              >
+                🔗
+              </button>
+              <button
+                onClick={() => insertTag('<tg-spoiler>', '</tg-spoiler>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded transition-colors"
+                title="Спойлер"
+              >
+                👁️
+              </button>
+              <button
+                onClick={() => insertTag('<blockquote>', '</blockquote>')}
+                className="px-2 py-1 text-xs bg-dark-700 hover:bg-dark-600 text-gray-300 rounded transition-colors"
+                title="Цитата"
+              >
+                ❝
+              </button>
+            </div>
+
+            {/* Tags Help */}
+            {showTagsHelp && (
+              <div className="p-3 bg-dark-800 border border-dark-600 rounded-lg text-xs space-y-2">
+                <p className="text-gray-400 font-medium mb-2">Поддерживаемые теги Telegram:</p>
+                <div className="grid grid-cols-2 gap-2">
+                  {TELEGRAM_TAGS.map((t) => (
+                    <div key={t.tag} className="flex items-center gap-2">
+                      <code className="text-neon-400 bg-dark-700 px-1.5 py-0.5 rounded">{t.tag}</code>
+                      <span className="text-gray-500">— {t.description}</span>
+                    </div>
+                  ))}
+                </div>
+              </div>
+            )}
+
+            <textarea
+              ref={textareaRef}
+              value={message}
+              onChange={(e) => handleMessageChange(e.target.value)}
+              onKeyDown={handleKeyDown}
+              rows={8}
+              placeholder="Введите текст сообщения..."
+              className="w-full bg-dark-700/50 border border-dark-600 rounded-xl px-4 py-3 text-white placeholder:text-gray-500 focus:outline-none focus:border-accent-500/50 transition-colors resize-none font-mono text-sm"
+            />
+            <div className="flex items-center justify-between">
+              <p className="text-xs text-gray-600">
+                Ctrl+Z — отмена • Ctrl+Shift+Z — повтор
+              </p>
+              <p className={`text-xs ${message.length > 2000 ? 'text-red-400' : 'text-gray-500'}`}>
+                {message.length} / 2000
+              </p>
+            </div>
+          </div>
+
+          {/* Send Button */}
+          <NeonButton
+            size="lg"
+            color="purple"
+            onClick={handleSend}
+            disabled={sending || !message.trim() || message.length > 2000 || (targetType === 'marathon' && !marathonId)}
+            isLoading={sending}
+            icon={<Send className="w-5 h-5" />}
+            className="w-full"
+          >
+            {sending ? 'Отправка...' : 'Отправить рассылку'}
+          </NeonButton>
+
+          {/* Warning */}
+          <div className="glass rounded-xl p-4 border border-amber-500/20">
+            <div className="flex items-start gap-3">
+              <AlertTriangle className="w-5 h-5 text-amber-400 flex-shrink-0 mt-0.5" />
+              <div>
+                <p className="text-sm text-amber-400 font-medium mb-1">Обратите внимание</p>
+                <p className="text-sm text-gray-400">
+                  Сообщение будет отправлено только пользователям с привязанным Telegram.
+                  Рассылка ограничена: 1 сообщение всем в минуту, 3 сообщения марафону в минуту.
+                </p>
+              </div>
+            </div>
           </div>
         </div>
 
-        {/* Send Button */}
-        <NeonButton
-          size="lg"
-          color="purple"
-          onClick={handleSend}
-          disabled={sending || !message.trim() || message.length > 2000 || (targetType === 'marathon' && !marathonId)}
-          isLoading={sending}
-          icon={<Send className="w-5 h-5" />}
-          className="w-full"
-        >
-          {sending ? 'Отправка...' : 'Отправить рассылку'}
-        </NeonButton>
+        {/* Right Column - Preview */}
+        <div className="w-96 flex-shrink-0">
+          <div className="sticky top-6 space-y-3">
+            <div className="flex items-center gap-2 text-gray-400">
+              <Eye className="w-4 h-4" />
+              <span className="text-sm font-medium">Предпросмотр</span>
+            </div>
 
-        {/* Warning */}
-        <div className="glass rounded-xl p-4 border border-amber-500/20">
-          <div className="flex items-start gap-3">
-            <AlertTriangle className="w-5 h-5 text-amber-400 flex-shrink-0 mt-0.5" />
-            <div>
-              <p className="text-sm text-amber-400 font-medium mb-1">Обратите внимание</p>
-              <p className="text-sm text-gray-400">
-                Сообщение будет отправлено только пользователям с привязанным Telegram.
-                Рассылка ограничена: 1 сообщение всем в минуту, 3 сообщения марафону в минуту.
-              </p>
+            {/* Telegram-style Preview */}
+            <div className="bg-[#0e1621] rounded-2xl p-4 border border-dark-600 shadow-xl">
+              {/* Chat Header */}
+              <div className="flex items-center gap-3 pb-3 border-b border-dark-600 mb-3">
+                <div className="w-10 h-10 rounded-full bg-gradient-to-br from-accent-500 to-pink-500 flex items-center justify-center text-white font-bold">
+                  M
+                </div>
+                <div>
+                  <p className="text-white font-medium text-sm">Marathon Bot</p>
+                  <p className="text-gray-500 text-xs">бот</p>
+                </div>
+              </div>
+
+              {/* Message Bubble */}
+              <div className="bg-[#182533] rounded-2xl rounded-tl-md p-3 max-w-full">
+                {message.trim() ? (
+                  <div
+                    className="text-white text-sm break-words telegram-preview"
+                    dangerouslySetInnerHTML={{ __html: telegramToHtml(message) }}
+                  />
+                ) : (
+                  <p className="text-gray-500 text-sm italic">Введите сообщение...</p>
+                )}
+                <p className="text-gray-500 text-xs text-right mt-2">
+                  {new Date().toLocaleTimeString('ru-RU', { hour: '2-digit', minute: '2-digit' })}
+                </p>
+              </div>
+
+              {/* Info */}
+              <div className="mt-4 pt-3 border-t border-dark-600">
+                <div className="flex items-center gap-2 text-gray-500 text-xs">
+                  <MessageSquare className="w-3 h-3" />
+                  <span>
+                    Так будет выглядеть сообщение в Telegram
+                  </span>
+                </div>
+              </div>
+            </div>
+
+            {/* Preview Notes */}
+            <div className="text-xs text-gray-500 space-y-1">
+              <p>• Спойлеры (<code className="text-gray-400">&lt;tg-spoiler&gt;</code>) показаны размытыми</p>
+              <p>• Цитаты (<code className="text-gray-400">&lt;blockquote&gt;</code>) с вертикальной линией</p>
+              <p>• Ссылки будут кликабельны в Telegram</p>
             </div>
           </div>
         </div>
       </div>
+
+      {/* Custom styles for Telegram preview */}
+      <style>{`
+        .telegram-preview b, .telegram-preview strong {
+          font-weight: 600;
+        }
+        .telegram-preview i, .telegram-preview em {
+          font-style: italic;
+        }
+        .telegram-preview u {
+          text-decoration: underline;
+        }
+        .telegram-preview s, .telegram-preview strike, .telegram-preview del {
+          text-decoration: line-through;
+        }
+        .telegram-preview code {
+          font-family: monospace;
+          background: rgba(255,255,255,0.1);
+          padding: 1px 4px;
+          border-radius: 4px;
+          font-size: 0.9em;
+        }
+        .telegram-preview pre {
+          font-family: monospace;
+          background: rgba(0,0,0,0.3);
+          padding: 8px 12px;
+          border-radius: 8px;
+          overflow-x: auto;
+          margin: 4px 0;
+          font-size: 0.85em;
+        }
+        .telegram-preview a {
+          color: #6ab2f2;
+          text-decoration: none;
+        }
+        .telegram-preview a:hover {
+          text-decoration: underline;
+        }
+        .telegram-preview .tg-spoiler {
+          background: #333;
+          color: transparent;
+          border-radius: 4px;
+          padding: 0 4px;
+          cursor: pointer;
+          transition: all 0.2s;
+        }
+        .telegram-preview .tg-spoiler:hover {
+          color: white;
+          background: transparent;
+        }
+        .telegram-preview blockquote {
+          border-left: 3px solid #6ab2f2;
+          padding-left: 12px;
+          margin: 8px 0;
+          color: #aaa;
+        }
+      `}</style>
     </div>
   )
 }