'use client';

import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
import { useRouter } from 'next/navigation';
import {
  ArrowLeft,
  ArrowRightLeft,
  BarChart3,
  CalendarDays,
  Camera,
  Check,
  CheckCheck,
  Circle,
  FileText,
  ImageIcon,
  Loader2,
  LogOut,
  MapPin,
  Mic,
  Paperclip,
  Pin,
  Plus,
  Search,
  Send,
  Settings,
  Smile,
  Trash2,
  UserPlus,
  Users,
  Video,
  Volume2,
  VolumeX,
  X
} from 'lucide-react';
import { AvatarWithPresence } from '@/components/family/avatar-with-presence';
import { FamilyInviteDialog } from '@/components/family/family-invite-dialog';
import { HoverUploadAvatar } from '@/components/family/hover-upload-avatar';
import { BotMiniAppSheet, FamilyBotChat } from '@/components/family/family-bot-chat';
import { ChatRoomAvatarDisplay } from '@/components/family/chat-room-avatar-display';
import { ChatEmojiContent } from '@/components/chat/chat-emoji-content';
import { ChatForwardDialog } from '@/components/chat/chat-forward-dialog';
import { ChatImageLightbox } from '@/components/chat/chat-image-lightbox';
import { ChatMediaAlbumGrid } from '@/components/chat/chat-media-album-grid';
import {
  ChatMediaComposeDialog,
  ChatMediaDropOverlay,
  extractFilesFromClipboard,
  extractFilesFromDataTransfer,
  useChatMediaComposer
} from '@/components/chat/chat-media-compose-dialog';
import { ChatDateSeparator } from '@/components/chat/chat-date-separator';
import { ChatToolsDialog, type ChatToolsTab } from '@/components/chat/chat-tools-dialog';
import { ChatDeleteMessageDialog } from '@/components/chat/chat-delete-message-dialog';
import { ChatMessageEditBanner } from '@/components/chat/chat-message-edit-banner';
import { ChatMessageContextMenu, ChatSelectionContextMenu, SelectableMessageWrapper } from '@/components/chat/chat-message-context-menu';
import { ChatPinnedMessageBanner } from '@/components/chat/chat-pinned-message-banner';
import { ChatMessageReactions } from '@/components/chat/chat-message-reactions';
import { ChatSelectionToolbar } from '@/components/chat/chat-selection-toolbar';
import { EmojiPicker } from '@/components/chat/emoji-picker';
import { InlineEditableTitle } from '@/components/chat/inline-editable-title';
import { RepliedMessagePreview, scrollToChatMessage } from '@/components/chat/replied-message-preview';
import { TypingIndicator } from '@/components/chat/typing-indicator';
import { VoiceMessagePlayer } from '@/components/chat/voice-message-player';
import { ChatLocationCard } from '@/components/chat/chat-location-card';
import { ChatLocationShareDialog, type ChatLocationSharePayload } from '@/components/chat/chat-location-share-dialog';
import { ChatVideoCaptureDialog, type ChatVideoCaptureMode } from '@/components/chat/chat-video-capture-dialog';
import { ChatVideoNotePlayer } from '@/components/chat/chat-video-note-player';
import { ChatVideoPlayer } from '@/components/chat/chat-video-player';
import { NotificationBell } from '@/components/notifications/notification-bell';
import { UserMenu } from '@/components/id/user-menu';
import { UserAvatar } from '@/components/id/user-avatar';
import { useAuth } from '@/components/id/auth-provider';
import { useToast } from '@/components/id/toast-provider';
import { useRealtime } from '@/components/notifications/realtime-provider';
import { Button } from '@/components/ui/button';
import { MediaImageSkeleton } from '@/components/ui/media-image-skeleton';
import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
import { Input } from '@/components/ui/input';
import { useRequireAuth } from '@/hooks/use-require-auth';
import {
  addChatRoomMember,
  apiFetch,
  ChatMessage,
  ChatRoom,
  createChatRoom,
  createE2ERoom,
  deleteChatMessage,
  deleteChatRoom,
  deleteFamilyGroup,
  editChatMessage,
  BotChatMeta,
  FamilyGroup,
  FamilyPresenceMember,
  fetchChatMessages,
  fetchChatRooms,
  fetchFamilyGroup,
  fetchFamilyPresence,
  forwardChatMessages,
  getApiErrorMessage,
  getAccessToken,
  leaveFamilyGroup,
  markChatRoomRead,
  removeChatRoomMember,
  removeFamilyMember,
  reportChatTyping,
  sendChatMessage,
  setChatMessagePinned,
  setChatRoomPinned,
  setChatRoomMuted,
  toggleChatMessageReaction,
  transferFamilyOwnership,
  updateFamilyGroup,
  uploadMediaObject,
  voteChatPoll
} from '@/lib/api';
import {
  decryptE2EBlob,
  decryptE2EPayload,
  encryptE2EBlob,
  e2eKindFromMessageType
} from '@/lib/e2e-chat';
import { getE2EMessageText, useE2EChat } from '@/hooks/use-e2e-chat';
import { useChatMessageSelection } from '@/hooks/use-chat-message-selection';
import { useChatDragSelection } from '@/hooks/use-chat-drag-selection';
import { useChatTyping } from '@/hooks/use-chat-typing';
import { shouldShowChatDateSeparator } from '@/lib/chat-date-utils';
import { AVATAR_UPDATED_EVENT, dispatchChatRoomAvatarUpdated } from '@/lib/avatar-events';
import { getSingleEmojiNative, isSingleEmojiMessage } from '@/lib/chat-emoji-display';
import { findMemberRoom, readStoredActiveRoomId, roomDisplayLabel, storeActiveRoomId } from '@/lib/family-chat';
import {
  getChatListPreviewText,
  getMessageCopyText,
  getMessagePreviewText,
  isChatInteractiveTarget,
  isSystemMessage,
  parseForwardedFrom
} from '@/lib/chat-message-utils';
import { cn } from '@/lib/utils';
import {
  createBlobObjectUrl,
  fetchAuthenticatedMediaBlob,
  mediaExpiresAtMs,
  revokeBlobObjectUrl,
  shouldRefreshMedia,
  triggerBlobDownload
} from '@/lib/authenticated-media';
import {
  detectChatMessageType,
  fileIconLabel,
  formatFileSize,
  parseLocationMetadata,
  parseMessageMetadata,
  resolveChatContentType
} from '@/lib/chat-media';
import { collectChatImageMessages, parseChatMediaMetadata } from '@/lib/chat-media-album';
import { uploadChatMediaBatch } from '@/lib/chat-media-upload';

interface PresignedUploadResponse {
  uploadUrl: string;
  storageKey: string;
  expiresAt?: string;
  uploadToken?: string;
}

interface LoadedChatMedia {
  blobUrl?: string;
  expiresAt?: number;
  fileName?: string;
  mimeType?: string;
  status: 'loading' | 'ready' | 'error';
  errorMessage?: string;
}

function formatMessageTime(value: string) {
  return new Intl.DateTimeFormat('ru-RU', { hour: '2-digit', minute: '2-digit' }).format(new Date(value));
}

function formatLastSeen(value?: string) {
  if (!value) return 'Не в сети';
  const date = new Date(value);
  const now = new Date();
  const diffMs = now.getTime() - date.getTime();
  const diffMinutes = Math.floor(diffMs / 60_000);
  if (diffMinutes < 1) return 'был(а) только что';
  if (diffMinutes < 60) return `был(а) ${diffMinutes} мин. назад`;
  const diffHours = Math.floor(diffMinutes / 60);
  if (diffHours < 24) return `был(а) ${diffHours} ч. назад`;
  return new Intl.DateTimeFormat('ru-RU', { day: 'numeric', month: 'short', hour: '2-digit', minute: '2-digit' }).format(date);
}

function formatPresenceStatus(member: FamilyPresenceMember) {
  if (member.online) return 'В сети';
  return formatLastSeen(member.lastSeenAt);
}

function FamilySidebarAvatar({
  groupId,
  name,
  hasAvatar,
  token,
  uploading,
  onUpload
}: {
  groupId: string;
  name: string;
  hasAvatar?: boolean;
  token: string | null;
  uploading?: boolean;
  onUpload: (file: File) => void;
}) {
  const { isLoading: authLoading } = useAuth();
  const [url, setUrl] = useState<string | null>(null);

  useEffect(() => {
    if (!hasAvatar || !token || authLoading) {
      setUrl(null);
      return;
    }
    apiFetch<{ accessUrl: string }>(`/media/families/${groupId}/avatar/url`, {}, token)
      .then((response) => setUrl(response.accessUrl))
      .catch(() => setUrl(null));
  }, [authLoading, groupId, hasAvatar, token]);

  return (
    <HoverUploadAvatar
      name={name}
      imageUrl={url}
      imageToken={token}
      uploading={uploading}
      onFileSelect={onUpload}
      className="h-11 w-11 shrink-0"
    />
  );
}

function memberRoleLabel(member: { familyRole?: string; isChatCreator?: boolean }) {
  if (member.familyRole === 'owner') return 'Создатель семьи';
  if (member.isChatCreator) return 'Создатель чата';
  return 'Участник';
}

function familyMemberRoleLabel(role: string) {
  return role === 'owner' ? 'Создатель семьи' : 'Участник';
}

function shouldSkipGroupedAlbumMessage(messages: ChatMessage[], index: number) {
  const message = messages[index];
  if (!message) return false;
  const meta = parseChatMediaMetadata(message.metadataJson);
  if (!meta.albumId) return false;
  const previous = messages[index - 1];
  if (!previous) return false;
  const previousMeta = parseChatMediaMetadata(previous.metadataJson);
  return previous.senderId === message.senderId && previousMeta.albumId === meta.albumId;
}

function collectAlbumMessages(messages: ChatMessage[], startIndex: number) {
  const first = messages[startIndex]!;
  const albumId = parseChatMediaMetadata(first.metadataJson).albumId;
  if (!albumId) return [first];
  const result: ChatMessage[] = [];
  for (let index = startIndex; index < messages.length; index += 1) {
    const message = messages[index]!;
    const meta = parseChatMediaMetadata(message.metadataJson);
    if (message.senderId !== first.senderId || meta.albumId !== albumId) break;
    result.push(message);
  }
  return result;
}

export function FamilyGroupView({ groupId }: { groupId: string }) {
  const router = useRouter();
  const { user, token, isLoading: authLoading } = useAuth();
  const { isReady, isPinLocked } = useRequireAuth();
  const { showToast } = useToast();
  const { subscribe, connected } = useRealtime();

  const [group, setGroup] = useState<FamilyGroup | null>(null);
  const [rooms, setRooms] = useState<ChatRoom[]>([]);
  const [activeRoomId, setActiveRoomId] = useState<string | null>(() => readStoredActiveRoomId(groupId));
  const [messages, setMessages] = useState<ChatMessage[]>([]);
  const [draft, setDraft] = useState('');
  const [loading, setLoading] = useState(true);
  const [sending, setSending] = useState(false);
  const [inviteOpen, setInviteOpen] = useState(false);
  const [createRoomOpen, setCreateRoomOpen] = useState(false);
  const [pollOpen, setPollOpen] = useState(false);
  const [membersOpen, setMembersOpen] = useState(false);
  const [familyMembersOpen, setFamilyMembersOpen] = useState(false);
  const [addMembersOpen, setAddMembersOpen] = useState(false);
  const [newRoomName, setNewRoomName] = useState('');
  const [selectedMembers, setSelectedMembers] = useState<string[]>([]);
  const [pollQuestion, setPollQuestion] = useState('');
  const [pollOptions, setPollOptions] = useState(['', '']);
  const [emojiOpen, setEmojiOpen] = useState(false);
  const [recording, setRecording] = useState(false);
  const [mediaUrls, setMediaUrls] = useState<Record<string, LoadedChatMedia>>({});
  const [downloadingKey, setDownloadingKey] = useState<string | null>(null);
  const [editingMessageId, setEditingMessageId] = useState<string | null>(null);
  const [presenceMembers, setPresenceMembers] = useState<FamilyPresenceMember[]>([]);
  const [deleteFamilyDialogOpen, setDeleteFamilyDialogOpen] = useState(false);
  const [leaveFamilyDialogOpen, setLeaveFamilyDialogOpen] = useState(false);
  const [transferOwnershipDialogOpen, setTransferOwnershipDialogOpen] = useState(false);
  const [leavingFamily, setLeavingFamily] = useState(false);
  const [transferringOwnership, setTransferringOwnership] = useState(false);
  const [selectedNewOwnerUserId, setSelectedNewOwnerUserId] = useState<string | null>(null);
  const [deletingFamily, setDeletingFamily] = useState(false);
  const [deleteMessagesDialogOpen, setDeleteMessagesDialogOpen] = useState(false);
  const [pendingDeleteMessageIds, setPendingDeleteMessageIds] = useState<string[]>([]);
  const [miniAppUrl, setMiniAppUrl] = useState<string | null>(null);
  const [miniAppTitle, setMiniAppTitle] = useState('Mini App');
  const [botChatMeta, setBotChatMeta] = useState<BotChatMeta | null>(null);
  const [deletingRoomId, setDeletingRoomId] = useState<string | null>(null);
  const [pinningRoomId, setPinningRoomId] = useState<string | null>(null);
  const [familyAvatarUploading, setFamilyAvatarUploading] = useState(false);
  const [roomAvatarUploading, setRoomAvatarUploading] = useState(false);
  const [forwardDialogOpen, setForwardDialogOpen] = useState(false);
  const [forwarding, setForwarding] = useState(false);
  const [bulkDeleting, setBulkDeleting] = useState(false);
  const [replyToMessage, setReplyToMessage] = useState<ChatMessage | null>(null);
  const [chatToolsOpen, setChatToolsOpen] = useState(false);
  const [chatToolsTab, setChatToolsTab] = useState<ChatToolsTab>('search');
  const [mediaDropVisible, setMediaDropVisible] = useState(false);
  const [lightboxIndex, setLightboxIndex] = useState<number | null>(null);
  const [videoCaptureOpen, setVideoCaptureOpen] = useState(false);
  const [videoCaptureMode, setVideoCaptureMode] = useState<ChatVideoCaptureMode>('note');
  const [locationShareOpen, setLocationShareOpen] = useState(false);

  const mediaComposer = useChatMediaComposer();

  const messagesEndRef = useRef<HTMLDivElement>(null);
  const autoScrollStateRef = useRef<{ id: string | null; count: number }>({ id: null, count: 0 });
  const readReceiptTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
  const typingEmitTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
  const lastTypingSentAtRef = useRef(0);
  const mediaRecorderRef = useRef<MediaRecorder | null>(null);
  const recordingStartedAtRef = useRef<number | null>(null);
  const mediaUrlsRef = useRef<Record<string, LoadedChatMedia>>({});
  const mediaLoadInFlightRef = useRef<Set<string>>(new Set());
  const fileInputRef = useRef<HTMLInputElement>(null);
  const videoInputRef = useRef<HTMLInputElement>(null);
  const dragDepthRef = useRef(0);

  useEffect(() => {
    mediaUrlsRef.current = mediaUrls;
  }, [mediaUrls]);

  const appendMessage = useCallback((message: ChatMessage) => {
    if (message.isDeleted) return;
    setMessages((current) => (current.some((item) => item.id === message.id) ? current : [...current, message]));
  }, []);

  const visibleMessages = useMemo(() => messages.filter((message) => !message.isDeleted), [messages]);
  const chatImageMessages = useMemo(() => collectChatImageMessages(visibleMessages), [visibleMessages]);
  const messageById = useMemo(
    () => new Map(visibleMessages.map((message) => [message.id, message])),
    [visibleMessages]
  );
  const pinnedMessage = useMemo(
    () =>
      visibleMessages
        .filter((message) => message.isPinned)
        .sort((left, right) => new Date(right.pinnedAt ?? right.createdAt).getTime() - new Date(left.pinnedAt ?? left.createdAt).getTime())[0] ?? null,
    [visibleMessages]
  );

  const { typers, registerTyper, clearTypers } = useChatTyping(user?.id);
  const {
    selectionMode,
    selectedMessageIds,
    setSelectedMessageIds,
    enterSelectionMode,
    exitSelectionMode,
    toggleSelectedMessage,
    addSelectedMessage,
    handleSelectionPointer
  } = useChatMessageSelection(visibleMessages);
  const { handleMessagePointerDown, handleDragEnterMessage, isDragging } = useChatDragSelection({
    selectionMode,
    enterSelectionMode,
    addSelectedMessage
  });

  const activeRoom = useMemo(() => rooms.find((room) => room.id === activeRoomId) ?? null, [activeRoomId, rooms]);
  const activeRoomIsBot = activeRoom?.type === 'BOT';
  useEffect(() => {
    if (!activeRoomIsBot) {
      setBotChatMeta(null);
    }
  }, [activeRoomIsBot, activeRoom?.id]);
  const activeRoomIsE2E = activeRoom?.type === 'E2E';
  const { peerE2eKey, peerKeyLoading, e2ePayloads, e2eErrors, encryptOutgoing } = useE2EChat({
    room: activeRoom,
    messages,
    userId: user?.id,
    token
  });
  const pinnedVisibleText = pinnedMessage
    ? getE2EMessageText({
        message: pinnedMessage,
        isE2E: activeRoomIsE2E,
        peerE2eKey,
        peerKeyLoading,
        e2ePayload: pinnedMessage.isEncrypted ? e2ePayloads[pinnedMessage.id] : null,
        e2eError: e2eErrors[pinnedMessage.id]
      })
    : '';
  const pinnedPreview = pinnedMessage ? getMessagePreviewText(pinnedMessage, pinnedVisibleText) : '';
  const activeRoomTitle = useMemo(
    () => (activeRoom && user ? roomDisplayLabel(activeRoom, user.id) : ''),
    [activeRoom, user]
  );
  const myMembership = activeRoom?.members.find((member) => member.userId === user?.id);
  const isFamilyOwner = group?.ownerId === user?.id;
  const humanMembers = useMemo(
    () => (group?.members ?? []).filter((member) => !member.isBot && member.role !== 'bot'),
    [group?.members]
  );
  const otherHumanMembers = useMemo(
    () => humanMembers.filter((member) => member.userId !== user?.id),
    [humanMembers, user?.id]
  );
  const ownerMustTransfer = Boolean(isFamilyOwner && otherHumanMembers.length > 0);
  const ownerLeaveDeletesFamily = Boolean(isFamilyOwner && otherHumanMembers.length === 0);
  const mobileChatOpen = Boolean(activeRoomId);
  const isChatCreator = activeRoom?.createdById === user?.id;
  const canManageChatMembers = Boolean(isFamilyOwner || isChatCreator || activeRoomIsBot);
  const canManageActiveBot = Boolean(
    activeRoomIsBot && botChatMeta?.manageWebAppUrl && user?.id && botChatMeta.botOwnerId === user.id
  );
  const familyMembersNotInRoom = useMemo(() => {
    if (!group?.members || !activeRoom) return [];
    const inRoom = new Set(activeRoom.members.map((member) => member.userId));
    return group.members.filter((member) => !inRoom.has(member.userId));
  }, [activeRoom, group?.members]);

  const presenceByUserId = useMemo(
    () => new Map(presenceMembers.map((member) => [member.userId, member])),
    [presenceMembers]
  );
  const onlineCount = useMemo(() => presenceMembers.filter((member) => member.online).length, [presenceMembers]);

  const loadGroup = useCallback(async () => {
    if (!token || isPinLocked) return;
    const [groupResponse, roomsResponse] = await Promise.all([fetchFamilyGroup(groupId, token), fetchChatRooms(groupId, token)]);
    setGroup(groupResponse);
    const roomList = roomsResponse.rooms ?? [];
    setRooms(roomList);
    setActiveRoomId((current) => {
      const preferred = current ?? readStoredActiveRoomId(groupId);
      if (preferred && roomList.some((room) => room.id === preferred)) {
        return preferred;
      }
      return roomList[0]?.id ?? null;
    });
  }, [groupId, isPinLocked, token]);

  useEffect(() => {
    storeActiveRoomId(groupId, activeRoomId);
  }, [activeRoomId, groupId]);

  useEffect(() => {
    exitSelectionMode();
    setReplyToMessage(null);
    cancelEditMessage();
    clearTypers();
  }, [activeRoomId, clearTypers, exitSelectionMode]);

  useEffect(() => {
    setActiveRoomId(readStoredActiveRoomId(groupId));
  }, [groupId]);

  const loadMessages = useCallback(async (roomId: string) => {
    if (!token || isPinLocked) return;
    const room = rooms.find((item) => item.id === roomId);
    if (!room || room.type === 'BOT') return;
    try {
      const response = await fetchChatMessages(roomId, token);
      setMessages((response.messages ?? []).filter((message) => !message.isDeleted));
    } catch (error) {
      const message = getApiErrorMessage(error, 'Не удалось загрузить сообщения');
      if (message && !message.includes('Bot API')) {
        showToast(message);
      }
    }
  }, [isPinLocked, rooms, showToast, token]);

  const loadPresence = useCallback(async () => {
    const accessToken = getAccessToken() ?? token?.trim() ?? null;
    if (!accessToken || isPinLocked) return;
    try {
      const response = await fetchFamilyPresence(groupId, accessToken);
      setPresenceMembers(response.members ?? []);
    } catch {
      // ignore background presence errors
    }
  }, [groupId, isPinLocked, token]);

  useEffect(() => {
    const accessToken = getAccessToken() ?? token?.trim() ?? null;
    if (!isReady || !accessToken || isPinLocked || authLoading) return;
    setLoading(true);
    loadGroup()
      .catch((error) => showToast(getApiErrorMessage(error, 'Не удалось загрузить семью') ?? 'Ошибка'))
      .finally(() => setLoading(false));
    void loadPresence();
  }, [authLoading, isPinLocked, isReady, loadGroup, loadPresence, showToast, token]);

  useEffect(() => {
    function handleAvatarUpdated() {
      void loadGroup();
    }
    window.addEventListener(AVATAR_UPDATED_EVENT, handleAvatarUpdated);
    return () => window.removeEventListener(AVATAR_UPDATED_EVENT, handleAvatarUpdated);
  }, [loadGroup]);

  useEffect(() => {
    const accessToken = getAccessToken() ?? token?.trim() ?? null;
    if (!accessToken || isPinLocked || authLoading) return;
    void loadPresence();
    const timer = window.setInterval(() => void loadPresence(), 25_000);
    return () => window.clearInterval(timer);
  }, [authLoading, connected, isPinLocked, loadPresence, token]);

  useEffect(() => {
    if (!activeRoomId || activeRoomIsBot) return;
    if (!rooms.some((room) => room.id === activeRoomId)) return;
    void loadMessages(activeRoomId);
    setEditingMessageId(null);
    setDraft('');
  }, [activeRoomId, activeRoomIsBot, loadMessages, rooms]);

  useEffect(() => {
    if (!activeRoomId || !token || !messages.length) return;
    const timer = window.setTimeout(() => {
      const last = messages[messages.length - 1];
      void markChatRoomRead(activeRoomId, last.id, token).catch(() => {});
    }, 500);
    return () => window.clearTimeout(timer);
  }, [activeRoomId, messages, token]);

  useEffect(() => {
    autoScrollStateRef.current = { id: null, count: 0 };
  }, [activeRoomId]);

  useEffect(() => {
    const lastMessage = visibleMessages[visibleMessages.length - 1];
    const previous = autoScrollStateRef.current;
    const next = { id: lastMessage?.id ?? null, count: visibleMessages.length };
    autoScrollStateRef.current = next;
    if (!next.id) return;
    const lastMessageChanged = previous.id !== next.id;
    const messageWasAppended = next.count >= previous.count;
    if (lastMessageChanged && messageWasAppended) {
      messagesEndRef.current?.scrollIntoView({ behavior: previous.id ? 'smooth' : 'auto' });
    }
  }, [visibleMessages]);

  useEffect(() => {
    if (!activeRoomId || !token || activeRoomIsBot) return;
    if (!draft.trim()) return;

    const emitTyping = () => {
      lastTypingSentAtRef.current = Date.now();
      void reportChatTyping(activeRoomId, token).catch(() => {});
    };

    const elapsed = Date.now() - lastTypingSentAtRef.current;
    if (elapsed >= 2000) {
      emitTyping();
    } else if (typingEmitTimerRef.current) {
      clearTimeout(typingEmitTimerRef.current);
      typingEmitTimerRef.current = setTimeout(emitTyping, 2000 - elapsed);
    } else {
      typingEmitTimerRef.current = setTimeout(emitTyping, 2000 - elapsed);
    }

    return () => {
      if (typingEmitTimerRef.current) {
        clearTimeout(typingEmitTimerRef.current);
        typingEmitTimerRef.current = null;
      }
    };
  }, [activeRoomId, activeRoomIsBot, draft, token]);

  useEffect(() => {
    return subscribe((event) => {
      const payload = event.payload;
      if (event.type === 'bot_message' || event.type === 'bot_message_edited') {
        if (activeRoomIsBot) {
          void loadGroup();
        }
        return;
      }
      if (payload?.roomId && payload.roomId !== activeRoomId) {
        if (event.type === 'chat_message') void loadGroup();
        return;
      }

      if (event.type === 'chat_typing' && payload?.roomId === activeRoomId) {
        const typerId = typeof payload.userId === 'string' ? payload.userId : '';
        const typerName = typeof payload.userName === 'string' ? payload.userName : 'Участник';
        if (typerId) registerTyper(typerId, typerName);
        return;
      }

      if (event.type === 'chat_message') {
        if (payload?.message) {
          appendMessage(payload.message as ChatMessage);
        } else if (activeRoomId && !activeRoomIsBot) {
          void loadMessages(activeRoomId);
        }
        void loadGroup();
        return;
      }

      if (event.type === 'chat_message_updated') {
        const updated = payload?.message as ChatMessage | undefined;
        if (updated) {
          if (updated.isDeleted) {
            setMessages((current) => current.filter((item) => item.id !== updated.id));
            setSelectedMessageIds((current) => current.filter((id) => id !== updated.id));
          } else {
            setMessages((current) => current.map((item) => (item.id === updated.id ? updated : item)));
          }
        } else if (activeRoomId && !activeRoomIsBot) {
          void loadMessages(activeRoomId);
        }
        void loadGroup();
        return;
      }

      if (event.type === 'chat_message_deleted') {
        const deleted = payload?.message as ChatMessage | undefined;
        if (deleted?.id) {
          setMessages((current) => current.filter((item) => item.id !== deleted.id));
          setSelectedMessageIds((current) => current.filter((id) => id !== deleted.id));
          if (editingMessageId === deleted.id) {
            cancelEditMessage();
          }
        } else if (activeRoomId && !activeRoomIsBot) {
          void loadMessages(activeRoomId);
        }
        void loadGroup();
        return;
      }

      if (event.type === 'chat_read_receipt' && activeRoomId && !activeRoomIsBot) {
        if (readReceiptTimerRef.current) clearTimeout(readReceiptTimerRef.current);
        readReceiptTimerRef.current = setTimeout(() => void loadMessages(activeRoomId), 400);
        return;
      }

      if (event.type === 'family_group_deleted' && payload?.groupId === groupId) {
        showToast('Семья была удалена');
        router.push('/family');
        return;
      }

      if (event.type === 'family_left_self' && payload?.groupId === groupId) {
        router.push('/family');
        return;
      }

      if (event.type === 'family_member_left' && payload?.groupId === groupId) {
        const userName = typeof payload?.userName === 'string' ? payload.userName : 'Участник';
        showToast(`${userName} покинул(а) семью`);
        void loadGroup();
        return;
      }

      if (event.type === 'family_member_removed' && payload?.groupId === groupId) {
        const userName = typeof payload?.userName === 'string' ? payload.userName : 'Участник';
        showToast(`${userName} удалён(а) из семьи`);
        void loadGroup();
        return;
      }

      if (event.type === 'family_ownership_transferred' && payload?.groupId === groupId) {
        showToast('Вы стали главой семьи');
        void loadGroup();
      }
    });
  }, [
    activeRoomId,
    activeRoomIsBot,
    appendMessage,
    editingMessageId,
    groupId,
    loadGroup,
    loadMessages,
    registerTyper,
    router,
    setSelectedMessageIds,
    showToast,
    subscribe
  ]);

  const loadChatMedia = useCallback(
    async (message: ChatMessage, force = false) => {
      if (!token || !activeRoomId || !message.storageKey) return;
      const storageKey = message.storageKey;
      const existing = mediaUrlsRef.current[storageKey];
      if (!force && existing?.status === 'ready' && existing.blobUrl && existing.expiresAt && !shouldRefreshMedia(existing.expiresAt)) {
        return;
      }
      if (mediaLoadInFlightRef.current.has(storageKey) && !force) {
        return;
      }

      if (message.isEncrypted && activeRoomIsE2E) {
        if (peerKeyLoading) return;
        if (!peerE2eKey || !user?.id || !message.content) {
          setMediaUrls((current) => ({
            ...current,
            [storageKey]: {
              ...current[storageKey],
              status: 'error',
              errorMessage: 'Не удалось расшифровать файл'
            }
          }));
          return;
        }
      }

      mediaLoadInFlightRef.current.add(storageKey);
      setMediaUrls((current) => ({
        ...current,
        [storageKey]: {
          ...current[storageKey],
          status: 'loading',
          errorMessage: undefined
        }
      }));

      let meta = parseMessageMetadata(message.metadataJson);
      let fileName = meta.fileName || message.content || undefined;
      let mimeType =
        message.mimeType ||
        (message.type === 'VOICE'
          ? 'audio/webm'
          : message.type === 'AUDIO'
            ? 'audio/mpeg'
            : message.type === 'VIDEO' || message.type === 'VIDEO_NOTE'
              ? 'video/webm'
              : undefined);
      const query = new URLSearchParams({ storageKey });
      if (fileName) query.set('fileName', fileName);

      try {
        const access = await apiFetch<{ accessUrl: string; expiresAt: string }>(
          `/media/chat/${activeRoomId}/media/url?${query.toString()}`,
          {},
          token
        );
        let blob = await fetchAuthenticatedMediaBlob(access.accessUrl, token, mimeType);
        if (message.isEncrypted && activeRoomIsE2E && peerE2eKey && user?.id && message.content) {
          const payload = await decryptE2EPayload(user.id, peerE2eKey, message.content);
          const decryptedBuffer = await decryptE2EBlob(user.id, peerE2eKey, await blob.arrayBuffer());
          mimeType = payload?.mimeType || mimeType;
          fileName = payload?.fileName || fileName;
          blob = new Blob([decryptedBuffer], { type: mimeType || 'application/octet-stream' });
        }
        const blobUrl = createBlobObjectUrl(blob);
        setMediaUrls((current) => {
          revokeBlobObjectUrl(current[storageKey]?.blobUrl);
          return {
            ...current,
            [storageKey]: {
              blobUrl,
              expiresAt: mediaExpiresAtMs(access.expiresAt),
              fileName,
              mimeType,
              status: 'ready'
            }
          };
        });
      } catch (error) {
        setMediaUrls((current) => ({
          ...current,
          [storageKey]: {
            ...current[storageKey],
            status: 'error',
            errorMessage: error instanceof Error ? error.message : 'Не удалось загрузить файл'
          }
        }));
      } finally {
        mediaLoadInFlightRef.current.delete(storageKey);
      }
    },
    [activeRoomId, activeRoomIsE2E, peerE2eKey, peerKeyLoading, token, user?.id]
  );

  const cacheUploadedMedia = useCallback((storageKey: string, file: File) => {
    const blobUrl = createBlobObjectUrl(file);
    setMediaUrls((current) => {
      revokeBlobObjectUrl(current[storageKey]?.blobUrl);
      return {
        ...current,
        [storageKey]: {
          blobUrl,
          expiresAt: Date.now() + 30 * 60_000,
          fileName: file.name,
          mimeType: file.type || resolveChatContentType(file),
          status: 'ready'
        }
      };
    });
  }, []);

  useEffect(() => {
    if (!token || !activeRoomId) return;
    messages.forEach((message) => {
      if (message.storageKey) void loadChatMedia(message);
    });
  }, [activeRoomId, loadChatMedia, messages, peerE2eKey, peerKeyLoading, token]);

  useEffect(() => {
    if (!token || !activeRoomId) return;
    const timer = window.setInterval(() => {
      messages.forEach((message) => {
        if (!message.storageKey) return;
        const cached = mediaUrlsRef.current[message.storageKey];
        if (cached?.status === 'ready' && cached.expiresAt && shouldRefreshMedia(cached.expiresAt)) {
          void loadChatMedia(message, true);
        }
      });
    }, 60_000);
    return () => window.clearInterval(timer);
  }, [activeRoomId, loadChatMedia, messages, token]);

  useEffect(() => {
    return () => {
      Object.values(mediaUrlsRef.current).forEach((entry) => revokeBlobObjectUrl(entry.blobUrl));
    };
  }, []);

  async function downloadChatFile(message: ChatMessage) {
    if (!token || !activeRoomId || !message.storageKey) return;
    const storageKey = message.storageKey;
    const meta = parseMessageMetadata(message.metadataJson);
    const fileName = meta.fileName || message.content || 'file';
    setDownloadingKey(storageKey);
    try {
      let blob: Blob | null = null;
      const cached = mediaUrls[storageKey];
      if (cached?.blobUrl) {
        blob = await fetch(cached.blobUrl).then((response) => response.blob());
      } else {
        const query = new URLSearchParams({ storageKey });
        if (fileName) query.set('fileName', fileName);
        const access = await apiFetch<{ accessUrl: string }>(
          `/media/chat/${activeRoomId}/media/url?${query.toString()}`,
          {},
          token
        );
        blob = await fetchAuthenticatedMediaBlob(`${access.accessUrl}?download=1`, token);
      }
      if (!blob) {
        throw new Error('Не удалось получить файл');
      }
      triggerBlobDownload(blob, fileName);
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось скачать файл') ?? 'Ошибка');
    } finally {
      setDownloadingKey(null);
    }
  }

  async function uploadRoomAvatar(file: File) {
    if (!token || !activeRoomId || roomAvatarUploading) return;
    setRoomAvatarUploading(true);
    try {
      const presigned = await apiFetch<PresignedUploadResponse>(
        `/media/chat/${activeRoomId}/avatar/upload-url`,
        { method: 'POST', body: JSON.stringify({ contentType: file.type }) },
        token
      );
      await uploadMediaObject(presigned, file, file.type);
      await apiFetch(`/media/chat/${activeRoomId}/avatar/confirm`, {
        method: 'POST',
        body: JSON.stringify({ storageKey: presigned.storageKey })
      }, token);
      await loadGroup();
      dispatchChatRoomAvatarUpdated(activeRoomId);
      showToast('Фото чата обновлено');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось загрузить фото чата') ?? 'Ошибка');
    } finally {
      setRoomAvatarUploading(false);
    }
  }

  function applyRoomUpdate(room: ChatRoom) {
    setRooms((current) => current.map((item) => (item.id === room.id ? room : item)));
  }

  function sortRoomsForViewer(roomList: ChatRoom[]) {
    return [...roomList].sort((a, b) => {
      const pinDiff = Number(Boolean(b.isPinned)) - Number(Boolean(a.isPinned));
      if (pinDiff !== 0) return pinDiff;
      if (a.isPinned && b.isPinned) {
        return (b.pinnedAt ?? '').localeCompare(a.pinnedAt ?? '');
      }
      const rank = (type: string) => (type === 'GENERAL' ? 0 : 1);
      const rankDiff = rank(a.type) - rank(b.type);
      if (rankDiff !== 0) return rankDiff;
      const aTime = a.lastMessage?.createdAt ?? a.updatedAt;
      const bTime = b.lastMessage?.createdAt ?? b.updatedAt;
      return bTime.localeCompare(aTime);
    });
  }

  async function handleToggleRoomPin(room: ChatRoom) {
    if (!token) return;
    setPinningRoomId(room.id);
    try {
      const updated = await setChatRoomPinned(room.id, !room.isPinned, token);
      setRooms((current) => sortRoomsForViewer(current.map((item) => (item.id === updated.id ? updated : item))));
      showToast(updated.isPinned ? 'Чат закреплён' : 'Чат откреплён');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось закрепить чат') ?? 'Ошибка');
    } finally {
      setPinningRoomId(null);
    }
  }

  async function handleAddRoomMember(memberUserId: string) {
    if (!token || !activeRoomId) return;
    try {
      const room = await addChatRoomMember(activeRoomId, memberUserId, token);
      applyRoomUpdate(room);
      setAddMembersOpen(false);
      showToast('Участник добавлен в чат');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось добавить участника') ?? 'Ошибка');
    }
  }

  async function handleRemoveFromChat(memberUserId: string) {
    if (!token || !activeRoomId) return;
    try {
      const room = await removeChatRoomMember(activeRoomId, memberUserId, token);
      applyRoomUpdate(room);
      if (memberUserId === user?.id) {
        setActiveRoomId(null);
        setMembersOpen(false);
      }
      showToast('Участник удалён из чата');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось удалить участника из чата') ?? 'Ошибка');
    }
  }

  async function handleRemoveFromFamily(memberId: string) {
    if (!token) return;
    try {
      await removeFamilyMember(memberId, token);
      await loadGroup();
      setMembersOpen(false);
      setFamilyMembersOpen(false);
      showToast('Участник удалён из семьи');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось удалить участника из семьи') ?? 'Ошибка');
    }
  }

  function openLeaveFamilyDialog() {
    setSelectedNewOwnerUserId(otherHumanMembers[0]?.userId ?? null);
    setLeaveFamilyDialogOpen(true);
  }

  function openTransferOwnershipDialog() {
    setSelectedNewOwnerUserId(otherHumanMembers[0]?.userId ?? null);
    setTransferOwnershipDialogOpen(true);
  }

  async function confirmTransferOwnership() {
    if (!token || !selectedNewOwnerUserId) {
      showToast('Выберите нового главу семьи');
      return;
    }
    setTransferringOwnership(true);
    try {
      const updated = await transferFamilyOwnership(groupId, selectedNewOwnerUserId, token);
      setGroup(updated);
      setTransferOwnershipDialogOpen(false);
      setFamilyMembersOpen(false);
      showToast('Управление семьёй передано');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось передать управление семьёй') ?? 'Ошибка');
    } finally {
      setTransferringOwnership(false);
    }
  }

  async function confirmLeaveFamily() {
    if (!token) return;
    if (ownerMustTransfer && !selectedNewOwnerUserId) {
      showToast('Выберите нового главу семьи');
      return;
    }
    setLeavingFamily(true);
    try {
      const result = await leaveFamilyGroup(
        groupId,
        token,
        ownerMustTransfer ? selectedNewOwnerUserId ?? undefined : undefined
      );
      setLeaveFamilyDialogOpen(false);
      setFamilyMembersOpen(false);
      showToast(result.deleted ? 'Семья удалена' : 'Вы покинули семью');
      router.push('/family');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось покинуть семью') ?? 'Ошибка');
    } finally {
      setLeavingFamily(false);
    }
  }

  async function createSecretChatWithMember(memberUserId: string) {
    if (!token) return;
    try {
      const room = await createE2ERoom(groupId, memberUserId, token);
      await loadGroup();
      setActiveRoomId(room.id);
      setFamilyMembersOpen(false);
      showToast('Секретный E2E чат создан');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось создать секретный чат') ?? 'Ошибка');
    }
  }

  async function openMemberChatFromList(memberUserId: string, options?: { isBot?: boolean; e2e?: boolean }) {
    if (!user || !token) return;
    let room = findMemberRoom(rooms, memberUserId, user.id, options);
    if (!room) {
      const roomsResponse = await fetchChatRooms(groupId, token);
      const roomList = roomsResponse.rooms ?? [];
      setRooms(roomList);
      room = findMemberRoom(roomList, memberUserId, user.id, options);
    }
    if (room) {
      setActiveRoomId(room.id);
      setFamilyMembersOpen(false);
    } else {
      showToast('Чат ещё создаётся. Обновите страницу через несколько секунд.');
    }
  }

  async function confirmDeleteFamily() {
    if (!token) return;
    setDeletingFamily(true);
    try {
      await deleteFamilyGroup(groupId, token);
      setDeleteFamilyDialogOpen(false);
      setFamilyMembersOpen(false);
      showToast('Семья удалена');
      router.push('/family');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось удалить семью') ?? 'Ошибка');
    } finally {
      setDeletingFamily(false);
    }
  }

  async function saveFamilyName(nextName: string) {
    if (!token || !nextName.trim()) return;
    try {
      const updated = await updateFamilyGroup(groupId, nextName.trim(), token);
      setGroup(updated);
      showToast('Название семьи обновлено');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось переименовать семью') ?? 'Ошибка');
      throw error;
    }
  }

  async function uploadFamilyAvatar(file: File) {
    if (!token || familyAvatarUploading) return;
    setFamilyAvatarUploading(true);
    try {
      const presigned = await apiFetch<PresignedUploadResponse>(
        `/media/families/${groupId}/avatar/upload-url`,
        { method: 'POST', body: JSON.stringify({ contentType: file.type }) },
        token
      );
      await uploadMediaObject(presigned, file, file.type);
      await apiFetch(`/media/families/${groupId}/avatar/confirm`, {
        method: 'POST',
        body: JSON.stringify({ storageKey: presigned.storageKey })
      }, token);
      await loadGroup();
      showToast('Аватар семьи обновлён');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось загрузить аватар') ?? 'Ошибка');
    } finally {
      setFamilyAvatarUploading(false);
    }
  }

  async function submitCreateRoom() {
    if (!token || !newRoomName.trim()) return;
    try {
      const room = await createChatRoom(groupId, newRoomName.trim(), selectedMembers, token);
      setRooms((current) => [...current, room]);
      setActiveRoomId(room.id);
      setCreateRoomOpen(false);
      setNewRoomName('');
      setSelectedMembers([]);
      showToast('Групповой чат создан');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось создать чат') ?? 'Ошибка');
    }
  }

  async function startEditMessage(message: ChatMessage) {
    if (message.isDeleted) return;
    exitSelectionMode();
    setEditingMessageId(message.id);
    setDraft(message.content ?? '');
    setReplyToMessage(null);
    setEmojiOpen(false);
  }

  function cancelEditMessage() {
    setEditingMessageId(null);
    setDraft('');
  }

  async function submitEditMessage() {
    if (!token || !editingMessageId) return;
    const content = draft.trim();
    if (!content) {
      showToast('Сообщение не может быть пустым');
      return;
    }
    setSending(true);
    try {
      const updated = await editChatMessage(editingMessageId, content, token);
      setMessages((current) => current.map((item) => (item.id === updated.id ? updated : item)));
      cancelEditMessage();
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось изменить сообщение') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  async function handleDeleteRoom(roomId: string) {
    if (!token) return;
    const room = rooms.find((item) => item.id === roomId);
    if (!room || room.type === 'GENERAL') return;
    if (!window.confirm('Удалить этот чат? Все сообщения будут удалены без возможности восстановления.')) return;
    setDeletingRoomId(roomId);
    try {
      await deleteChatRoom(roomId, token);
      if (activeRoomId === roomId) {
        setActiveRoomId(null);
        setMessages([]);
      }
      await loadGroup();
      showToast('Чат удалён');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось удалить чат') ?? 'Ошибка');
    } finally {
      setDeletingRoomId(null);
    }
  }

  function requestDeleteMessages(messageIds: string[]) {
    if (!messageIds.length) return;
    setPendingDeleteMessageIds(messageIds);
    setDeleteMessagesDialogOpen(true);
  }

  async function confirmDeleteMessages() {
    if (!token || !pendingDeleteMessageIds.length) return;
    const ids = [...pendingDeleteMessageIds];
    setBulkDeleting(true);

    setMessages((current) => current.filter((item) => !ids.includes(item.id)));

    try {
      for (const messageId of ids) {
        await deleteChatMessage(messageId, token);
        if (editingMessageId === messageId) {
          cancelEditMessage();
        }
      }
      setSelectedMessageIds((current) => current.filter((id) => !ids.includes(id)));
      exitSelectionMode();
      setDeleteMessagesDialogOpen(false);
      setPendingDeleteMessageIds([]);
      void loadGroup();
      showToast(ids.length === 1 ? 'Сообщение удалено' : 'Сообщения удалены');
    } catch (error) {
      if (activeRoomId) void loadMessages(activeRoomId);
      showToast(getApiErrorMessage(error, 'Не удалось удалить сообщение') ?? 'Ошибка');
    } finally {
      setBulkDeleting(false);
    }
  }

  async function handleToggleReaction(messageId: string, emoji: string) {
    if (!token) return;
    try {
      const updated = await toggleChatMessageReaction(messageId, emoji, token);
      setMessages((current) => current.map((item) => (item.id === updated.id ? updated : item)));
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось поставить реакцию') ?? 'Ошибка');
    }
  }

  async function handleTogglePin(message: ChatMessage) {
    if (!token) return;
    try {
      const updated = await setChatMessagePinned(message.id, !message.isPinned, token);
      setMessages((current) => current.map((item) => (item.id === updated.id ? updated : item)));
      showToast(updated.isPinned ? 'Сообщение закреплено' : 'Сообщение откреплено');
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось изменить закрепление') ?? 'Ошибка');
    }
  }

  function handleSelectionReply() {
    const selected = getSelectedMessages();
    if (selected.length !== 1) {
      showToast('Ответить можно только на одно сообщение');
      return;
    }
    exitSelectionMode();
    setReplyToMessage(selected[0]!);
    setEditingMessageId(null);
    setDraft('');
    setEmojiOpen(false);
  }

  function handleSelectionPin() {
    const selected = getSelectedMessages();
    if (selected.length !== 1) {
      showToast('Закрепить можно только одно сообщение');
      return;
    }
    void handleTogglePin(selected[0]!);
  }

  function getSelectedMessages() {
    const selected = new Set(selectedMessageIds);
    return visibleMessages.filter((message) => selected.has(message.id));
  }

  async function handleBulkCopy() {
    const selected = getSelectedMessages();
    if (!selected.length) return;
    const lines = selected
      .map((message) =>
        getMessageCopyText(
          message,
          getE2EMessageText({
            message,
            isE2E: activeRoomIsE2E,
            peerE2eKey,
            peerKeyLoading,
            e2ePayload: message.isEncrypted ? e2ePayloads[message.id] : null,
            e2eError: e2eErrors[message.id]
          })
        )
      )
      .filter(Boolean);
    if (!lines.length) {
      showToast('Нечего копировать');
      return;
    }
    await navigator.clipboard.writeText(lines.join('\n\n'));
    showToast('Сообщения скопированы');
    exitSelectionMode();
  }

  async function handleBulkDelete() {
    const selected = getSelectedMessages().filter((message) => message.senderId === user?.id);
    if (!selected.length) {
      showToast('Можно удалять только свои сообщения');
      return;
    }
    requestDeleteMessages(selected.map((message) => message.id));
  }

  async function handleForwardToRoom(targetRoomId: string) {
    if (!token) return;
    const ids = selectionMode ? selectedMessageIds : [];
    if (!ids.length) return;
    setForwarding(true);
    try {
      const response = await forwardChatMessages(targetRoomId, ids, token);
      showToast(`Переслано сообщений: ${response.messages?.length ?? ids.length}`);
      setForwardDialogOpen(false);
      exitSelectionMode();
      if (targetRoomId === activeRoomId) {
        for (const message of response.messages ?? []) {
          appendMessage(message);
        }
      }
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось переслать сообщения') ?? 'Ошибка');
    } finally {
      setForwarding(false);
    }
  }

  function insertEmojiToDraft(nativeEmoji: string) {
    setDraft((current) => `${current}${nativeEmoji}`);
  }

  async function sendText(type: string = 'TEXT') {
    if (!token || !activeRoomId || !activeRoom || sending) return;
    const content = draft.trim();
    if (!content && type === 'TEXT') return;

    if (editingMessageId && type === 'TEXT') {
      await submitEditMessage();
      return;
    }

    setSending(true);
    try {
      let payload = content;
      let isEncrypted = false;
      if (activeRoomIsE2E) {
        payload = await encryptOutgoing({ kind: type === 'EMOJI' ? 'emoji' : 'text', text: content, emojiId: type === 'EMOJI' ? content : undefined });
        isEncrypted = true;
      }
      const message = await sendChatMessage(
        activeRoomId,
        { type, content: payload, isEncrypted, replyToId: replyToMessage?.id },
        token
      );
      appendMessage(message);
      setDraft('');
      setReplyToMessage(null);
      setEmojiOpen(false);
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось отправить сообщение') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  async function sendLocation(payload: ChatLocationSharePayload) {
    if (!token || !activeRoomId || !activeRoom || sending) return;
    setSending(true);
    try {
      const content =
        payload.label?.trim() ||
        payload.address?.trim() ||
        `${payload.latitude.toFixed(6)}, ${payload.longitude.toFixed(6)}`;
      const metadataJson = JSON.stringify({
        latitude: payload.latitude,
        longitude: payload.longitude,
        address: payload.address,
        label: payload.label
      });

      let messageContent = content;
      let isEncrypted = false;
      if (activeRoomIsE2E) {
        messageContent = await encryptOutgoing({
          kind: 'location',
          text: content,
          latitude: payload.latitude,
          longitude: payload.longitude,
          address: payload.address,
          label: payload.label
        });
        isEncrypted = true;
      }

      const message = await sendChatMessage(
        activeRoomId,
        {
          type: 'LOCATION',
          content: messageContent,
          isEncrypted,
          metadataJson: activeRoomIsE2E ? undefined : metadataJson,
          replyToId: replyToMessage?.id
        },
        token
      );
      appendMessage(message);
      setLocationShareOpen(false);
      setReplyToMessage(null);
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось отправить геопозицию') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  async function uploadChatFile(file: File, options?: { voice?: boolean; videoNote?: boolean; durationMs?: number }) {
    if (!token || !activeRoomId || !activeRoom) return;
    const contentType = resolveChatContentType(file);
    const isDirectUpload = Boolean(options?.voice || options?.videoNote || contentType.startsWith('video/'));
    if (!isDirectUpload) {
      queueMediaFiles([file]);
      return;
    }
    setSending(true);
    try {
      const messageType = detectChatMessageType(file, { voice: options?.voice, videoNote: options?.videoNote });
      const metadata = {
        fileName: file.name,
        fileSize: file.size,
        ...(options?.durationMs ? { durationMs: options.durationMs } : {}),
        ...(options?.videoNote ? { videoNote: true } : {})
      };

      let uploadFile = file;
      let uploadContentType = contentType;
      let messageContent: string | undefined =
        messageType === 'VOICE'
          ? 'Голосовое сообщение'
          : messageType === 'VIDEO'
            ? 'Видео'
            : messageType === 'VIDEO_NOTE'
              ? 'Видеосообщение'
              : messageType === 'FILE'
                ? file.name
                : undefined;
      let isEncrypted = false;

      if (activeRoomIsE2E) {
        if (!user?.id || !peerE2eKey) {
          showToast('Секретный чат недоступен без ключей E2E у обоих участников');
          return;
        }
        const encryptedBuffer = await encryptE2EBlob(user.id, peerE2eKey, await file.arrayBuffer());
        uploadFile = new File([encryptedBuffer], `${file.name}.lendryenc`, { type: 'application/octet-stream' });
        uploadContentType = 'application/octet-stream';
        messageContent = await encryptOutgoing({
          kind: e2eKindFromMessageType(messageType),
          fileName: file.name,
          mimeType: contentType,
          fileSize: file.size,
          durationMs: options?.durationMs
        });
        isEncrypted = true;
      }

      const presigned = await apiFetch<PresignedUploadResponse>(
        `/media/chat/${activeRoomId}/media/upload-url`,
        {
          method: 'POST',
          body: JSON.stringify({ contentType: uploadContentType, fileName: uploadFile.name })
        },
        token
      );
      await uploadMediaObject(presigned, uploadFile, uploadContentType);
      const message = await sendChatMessage(
        activeRoomId,
        {
          type: messageType,
          storageKey: presigned.storageKey,
          mimeType: uploadContentType,
          content: messageContent,
          isEncrypted,
          metadataJson: JSON.stringify(activeRoomIsE2E ? { e2e: true, ...metadata } : metadata)
        },
        token
      );
      appendMessage(message);
      cacheUploadedMedia(presigned.storageKey, file);
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось отправить файл') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  const queueMediaFiles = useCallback(
    (files: File[], options?: { sendAsFile?: boolean }) => {
      if (!activeRoom || activeRoomIsBot || !files.length) return;
      if (files.length > mediaComposer.maxFiles) {
        showToast(`Можно отправить не более ${mediaComposer.maxFiles} файлов за раз`);
      }
      const limited = files.slice(0, mediaComposer.maxFiles);
      if (mediaComposer.open && mediaComposer.items.length) {
        void mediaComposer.addFiles(limited);
        return;
      }
      void mediaComposer.openWithFiles(limited, options);
    },
    [activeRoom, activeRoomIsBot, mediaComposer]
  );

  async function submitMediaCompose() {
    if (!token || !activeRoomId || !activeRoom || !mediaComposer.items.length) return;
    setSending(true);
    try {
      const uploaded = await uploadChatMediaBatch({
        roomId: activeRoomId,
        token,
        items: mediaComposer.items.map((item) => ({
          file: item.file,
          sendAsFile: item.sendAsFile,
          width: item.width,
          height: item.height
        })),
        caption: mediaComposer.caption,
        isE2E: activeRoomIsE2E,
        userId: user?.id,
        peerE2eKey,
        encryptOutgoing
      });
      uploaded.forEach((message, index) => {
        appendMessage(message);
        const sourceFile = mediaComposer.items[index]?.file;
        if (message.storageKey && sourceFile) {
          cacheUploadedMedia(message.storageKey, sourceFile);
        }
      });
      mediaComposer.close();
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось отправить файлы') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  useEffect(() => {
    if (!activeRoom || activeRoomIsBot) return;
    function handlePaste(event: ClipboardEvent) {
      const files = extractFilesFromClipboard(event.clipboardData);
      if (!files.length) return;
      event.preventDefault();
      queueMediaFiles(files, { sendAsFile: false });
    }
    window.addEventListener('paste', handlePaste);
    return () => window.removeEventListener('paste', handlePaste);
  }, [activeRoom, activeRoomIsBot, queueMediaFiles]);

  function openImageLightbox(message: ChatMessage) {
    const index = chatImageMessages.findIndex((item) => item.id === message.id);
    if (index >= 0) setLightboxIndex(index);
  }

  async function submitPoll() {
    if (!token || !activeRoomId) return;
    const options = pollOptions.map((item) => item.trim()).filter(Boolean);
    if (!pollQuestion.trim() || options.length < 2) {
      showToast('Укажите вопрос и минимум 2 варианта');
      return;
    }
    setSending(true);
    try {
      const message = await sendChatMessage(
        activeRoomId,
        { type: 'POLL', poll: { question: pollQuestion.trim(), options } },
        token
      );
      appendMessage(message);
      setPollOpen(false);
      setPollQuestion('');
      setPollOptions(['', '']);
      void loadGroup();
    } catch (error) {
      showToast(getApiErrorMessage(error, 'Не удалось создать опрос') ?? 'Ошибка');
    } finally {
      setSending(false);
    }
  }

  async function toggleMute() {
    if (!token || !activeRoomId || !activeRoom) return;
    const muted = !myMembership?.notificationsMuted;
    await setChatRoomMuted(activeRoomId, muted, token);
    setRooms((current) =>
      current.map((room) =>
        room.id === activeRoomId
          ? {
              ...room,
              members: room.members.map((member) =>
                member.userId === user?.id ? { ...member, notificationsMuted: muted } : member
              )
            }
          : room
      )
    );
    showToast(muted ? 'Уведомления чата выключены' : 'Уведомления чата включены');
  }

  async function startVoiceRecording() {
    try {
      const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
      const preferredTypes = ['audio/webm;codecs=opus', 'audio/webm', 'audio/ogg;codecs=opus', 'audio/ogg'];
      const mimeType = preferredTypes.find((type) => MediaRecorder.isTypeSupported(type)) ?? '';
      const recorder = mimeType ? new MediaRecorder(stream, { mimeType }) : new MediaRecorder(stream);
      const chunks: BlobPart[] = [];
      recorder.ondataavailable = (event) => {
        if (event.data.size > 0) chunks.push(event.data);
      };
      recorder.onstop = () => {
        stream.getTracks().forEach((track) => track.stop());
        const durationMs = recordingStartedAtRef.current ? Date.now() - recordingStartedAtRef.current : undefined;
        recordingStartedAtRef.current = null;
        const blob = new Blob(chunks, { type: 'audio/webm' });
        void uploadChatFile(new File([blob], `voice-${Date.now()}.webm`, { type: 'audio/webm' }), {
          voice: true,
          durationMs
        });
      };
      mediaRecorderRef.current = recorder;
      recordingStartedAtRef.current = Date.now();
      recorder.start();
      setRecording(true);
    } catch {
      showToast('Не удалось получить доступ к микрофону');
    }
  }

  function stopVoiceRecording() {
    mediaRecorderRef.current?.stop();
    mediaRecorderRef.current = null;
    setRecording(false);
  }

  if (!isReady || loading) {
    return (
      <div className="flex h-[calc(100dvh-4.5rem-env(safe-area-inset-bottom))] items-center justify-center text-[#667085] lg:h-auto lg:py-20">
        Загрузка семьи...
      </div>
    );
  }

  return (
    <div
      className={cn(
        'flex w-full min-w-0 max-w-full overflow-hidden bg-[#eef2f8]',
        'h-[calc(100dvh-4.5rem-env(safe-area-inset-bottom))] min-h-0 lg:h-[calc(100vh-168px)] lg:min-h-[640px]',
        'pt-[env(safe-area-inset-top)] lg:mt-12 lg:pt-0',
        'rounded-none border-0 lg:rounded-[28px] lg:border lg:border-[#eceef4]'
      )}
    >
      <aside
        className={cn(
          'flex min-w-0 max-w-full flex-col overflow-hidden border-r border-[#e4e8ef] bg-white',
          'w-full lg:w-[300px] lg:shrink-0',
          mobileChatOpen ? 'hidden lg:flex' : 'flex'
        )}
      >
        <div className="shrink-0 border-b border-[#eceef4] p-3 sm:p-4">
          <div className="mb-3 flex items-center justify-between gap-2">
            <button
              type="button"
              className="flex min-w-0 items-center gap-2 text-sm text-[#667085]"
              onClick={() => router.push('/family')}
            >
              <ArrowLeft className="h-4 w-4 shrink-0" />
              <span className="truncate">Все семьи</span>
            </button>
            <div className="flex shrink-0 items-center gap-1 lg:hidden">
              <NotificationBell />
              <UserMenu className="border-0 bg-transparent p-0 pr-0 shadow-none" />
            </div>
          </div>
          <div className="flex items-center gap-3">
            <FamilySidebarAvatar
              groupId={groupId}
              name={group?.name ?? 'С'}
              hasAvatar={group?.hasAvatar}
              token={token}
              uploading={familyAvatarUploading}
              onUpload={(file) => void uploadFamilyAvatar(file)}
            />
            <div className="min-w-0 flex-1">
              <InlineEditableTitle
                value={group?.name ?? 'Семья'}
                onSave={saveFamilyName}
                disabled={!isFamilyOwner}
              />
            </div>
          </div>
          <div className="mt-3 flex gap-2">
            <Button size="sm" variant="secondary" className="h-10 flex-1 rounded-xl text-sm" onClick={() => setInviteOpen(true)}>
              <UserPlus className="mr-1 h-4 w-4 shrink-0" />
              Пригласить
            </Button>
          </div>
          <button
            type="button"
            onClick={() => setFamilyMembersOpen(true)}
            className="mt-3 flex w-full min-w-0 items-center gap-3 rounded-2xl bg-[#f4f5f8] px-3 py-2.5 text-left transition hover:bg-[#eceef4] sm:py-3"
          >
            <div className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-[#3390ec]/10 text-[#3390ec]">
              <Users className="h-5 w-5" />
            </div>
            <div className="min-w-0 flex-1">
              <p className="text-sm font-medium">Участники семьи</p>
              <p className="text-xs text-[#667085]">
                {onlineCount > 0 ? `${onlineCount} в сети · ` : ''}
                {group?.members?.length ?? 0} человек
              </p>
            </div>
          </button>
        </div>
        <div className="flex shrink-0 items-center justify-between px-3 py-2.5 sm:px-4 sm:py-3">
          <p className="text-sm font-semibold text-[#667085]">Чаты</p>
          <Button size="sm" variant="ghost" className="h-8 w-8 shrink-0 rounded-xl p-0" onClick={() => setCreateRoomOpen(true)}>
            <Plus className="h-4 w-4" />
          </Button>
        </div>
        <div className="min-h-0 flex-1 overflow-x-hidden overflow-y-auto overscroll-contain">
          {rooms.map((room) => {
            const roomLabel = user ? roomDisplayLabel(room, user.id) : room.name;
            const preview =
              getChatListPreviewText(room.lastMessage) || (room.type === 'GENERAL' ? 'Общий чат семьи' : 'Нет сообщений');
            return (
            <div
              key={room.id}
              className={cn(
                'group relative min-w-0 overflow-hidden transition hover:bg-[#f7f9fc]',
                activeRoomId === room.id && 'bg-[#3390ec]/10'
              )}
            >
              <button
                type="button"
                onClick={() => setActiveRoomId(room.id)}
                className="flex w-full min-w-0 items-start gap-3 py-3 pl-3 pr-11 text-left sm:pl-4 sm:pr-12"
              >
                <div className="shrink-0">
                  <ChatRoomAvatarDisplay room={room} viewerUserId={user?.id ?? ''} token={token} size="sm" />
                </div>
                <div className="min-w-0 flex-1 overflow-hidden">
                  <div className="flex items-center gap-2">
                    <span className="min-w-0 flex-1 truncate text-[15px] font-medium leading-tight">{roomLabel}</span>
                    {room.lastMessage ? (
                      <span className="shrink-0 tabular-nums text-[11px] leading-none text-[#a8adbc]">
                        {formatMessageTime(room.lastMessage.createdAt)}
                      </span>
                    ) : null}
                  </div>
                  <div className="mt-1 flex min-w-0 items-center gap-1.5">
                    {room.peerLeftFamily ? (
                      <span className="shrink-0 rounded bg-amber-50 px-1 py-0.5 text-[10px] font-medium leading-none text-amber-700">
                        не в семье
                      </span>
                    ) : null}
                    {room.isPinned ? (
                      <Pin className="h-3 w-3 shrink-0 fill-[#8a8f9e] text-[#8a8f9e] lg:hidden" />
                    ) : null}
                    <p className="min-w-0 flex-1 truncate text-sm leading-snug text-[#667085]">{preview}</p>
                  </div>
                </div>
              </button>
              <button
                type="button"
                aria-label={room.isPinned ? 'Открепить чат' : 'Закрепить чат'}
                disabled={pinningRoomId === room.id}
                className={cn(
                  'absolute right-1 top-1/2 hidden h-9 w-9 -translate-y-1/2 items-center justify-center rounded-lg text-[#8a8f9e] transition hover:bg-[#eceef4] hover:text-[#667085] sm:right-2 lg:flex',
                  room.isPinned ? 'opacity-100' : 'opacity-0 group-hover:opacity-100',
                  pinningRoomId === room.id && 'opacity-100'
                )}
                onClick={() => void handleToggleRoomPin(room)}
              >
                {pinningRoomId === room.id ? (
                  <Loader2 className="h-4 w-4 animate-spin" />
                ) : (
                  <Pin className={cn('h-4 w-4', room.isPinned && 'fill-[#8a8f9e]')} />
                )}
              </button>
            </div>
          );
          })}
        </div>
      </aside>

      <section
        className={cn(
          'min-w-0 max-w-full flex-1 flex-col overflow-hidden bg-[#e6ebf2]',
          mobileChatOpen ? 'flex' : 'hidden lg:flex'
        )}
      >
        {activeRoom ? (
          <>
            <div className="flex items-center justify-between gap-2 border-b border-[#dce3ec] bg-white px-3 py-3 sm:px-4">
              <div className="flex min-w-0 flex-1 items-center gap-2 sm:gap-3">
                <button
                  type="button"
                  aria-label="Назад к списку чатов"
                  className="flex h-9 w-9 shrink-0 items-center justify-center rounded-xl text-[#667085] transition hover:bg-[#f4f5f8] lg:hidden"
                  onClick={() => setActiveRoomId(null)}
                >
                  <ArrowLeft className="h-5 w-5" />
                </button>
                {(activeRoom.type === 'GROUP' || activeRoom.type === 'GENERAL') ? (
                  <label className="group/room-avatar relative block shrink-0 cursor-pointer overflow-hidden rounded-full">
                    <ChatRoomAvatarDisplay room={activeRoom} viewerUserId={user?.id ?? ''} token={token} />
                    <span
                      className={cn(
                        'absolute inset-0 flex items-center justify-center bg-black/45 text-white opacity-0 transition-opacity duration-200 group-hover/room-avatar:opacity-100',
                        roomAvatarUploading && 'opacity-100'
                      )}
                    >
                      {roomAvatarUploading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Camera className="h-4 w-4" />}
                    </span>
                    <input
                      type="file"
                      accept="image/*"
                      className="sr-only"
                      disabled={roomAvatarUploading}
                      onChange={(event) => {
                        const file = event.target.files?.[0];
                        if (file) void uploadRoomAvatar(file);
                        event.target.value = '';
                      }}
                    />
                  </label>
                ) : (
                  <div className="shrink-0 overflow-hidden rounded-full">
                    <ChatRoomAvatarDisplay room={activeRoom} viewerUserId={user?.id ?? ''} token={token} />
                  </div>
                )}
                <button type="button" className="min-w-0 flex-1 overflow-hidden text-left" onClick={() => setMembersOpen(true)}>
                  <h2 className="truncate text-base font-semibold sm:text-lg">{activeRoomTitle}</h2>
                  <p className="truncate text-xs text-[#667085]">
                    {activeRoomIsBot ? (
                      <>🤖 Бот · {activeRoom.members.length} участников</>
                    ) : activeRoomIsE2E ? (
                      <>
                        🔒 E2E · секретный чат
                        {activeRoom.peerLeftFamily ? (
                          <span className="ml-1 text-amber-600">· собеседник не в семье</span>
                        ) : null}
                      </>
                    ) : activeRoom.type === 'DIRECT' ? (
                      <>
                        Личный чат · {activeRoom.members.length} участников
                        {activeRoom.peerLeftFamily ? (
                          <span className="ml-1 text-amber-600">· собеседник не в семье</span>
                        ) : null}
                      </>
                    ) : (
                      <>
                        {onlineCount > 0 ? (
                          <span className="text-emerald-600">{onlineCount} в сети</span>
                        ) : (
                          'Никого нет в сети'
                        )}
                        {' · '}
                        {activeRoom.members.length} участников
                      </>
                    )}
                  </p>
                </button>
              </div>
              <div className="flex shrink-0 items-center gap-1 sm:gap-2">
                {!activeRoomIsBot ? (
                  <>
                    <Button
                      size="sm"
                      variant="secondary"
                      className="h-9 w-9 shrink-0 rounded-xl p-0"
                      aria-label="Поиск по сообщениям"
                      onClick={() => {
                        setChatToolsTab('search');
                        setChatToolsOpen(true);
                      }}
                    >
                      <Search className="h-4 w-4 shrink-0" />
                    </Button>
                    <Button
                      size="sm"
                      variant="secondary"
                      className="hidden h-9 w-9 shrink-0 rounded-xl p-0 sm:inline-flex"
                      aria-label="Перейти к дате"
                      onClick={() => {
                        setChatToolsTab('calendar');
                        setChatToolsOpen(true);
                      }}
                    >
                      <CalendarDays className="h-4 w-4 shrink-0" />
                    </Button>
                    <Button
                      size="sm"
                      variant="secondary"
                      className="h-9 w-9 shrink-0 rounded-xl p-0"
                      aria-label="Медиа чата"
                      onClick={() => {
                        setChatToolsTab('media');
                        setChatToolsOpen(true);
                      }}
                    >
                      <ImageIcon className="h-4 w-4 shrink-0" />
                    </Button>
                  </>
                ) : null}
                {canManageActiveBot ? (
                  <Button
                    size="sm"
                    variant="secondary"
                    className="rounded-xl"
                    aria-label="Настройки бота"
                    title="Настройки бота"
                    onClick={() => {
                      setMiniAppTitle('Настройки бота');
                      setMiniAppUrl(botChatMeta!.manageWebAppUrl!);
                    }}
                  >
                    <Settings className="h-4 w-4" />
                  </Button>
                ) : null}
                <Button size="sm" variant="secondary" className="rounded-xl" onClick={() => setMembersOpen(true)}>
                  <Users className="h-4 w-4" />
                </Button>
                <Button size="sm" variant="secondary" className="rounded-xl" onClick={() => void toggleMute()}>
                  {myMembership?.notificationsMuted ? <VolumeX className="h-4 w-4" /> : <Volume2 className="h-4 w-4" />}
                </Button>
                {activeRoom.type !== 'GENERAL' ? (
                  <Button
                    size="sm"
                    variant="secondary"
                    className="rounded-xl text-red-600 hover:text-red-700"
                    disabled={deletingRoomId === activeRoom.id}
                    onClick={() => void handleDeleteRoom(activeRoom.id)}
                  >
                    {deletingRoomId === activeRoom.id ? <Loader2 className="h-4 w-4 animate-spin" /> : <Trash2 className="h-4 w-4" />}
                  </Button>
                ) : null}
              </div>
            </div>

            {activeRoomIsBot && activeRoom.botUsername ? (
              <FamilyBotChat
                botRef={activeRoom.botUsername}
                botName={activeRoomTitle}
                token={token}
                roomId={activeRoom.id}
                onBotMetaChange={setBotChatMeta}
                onOpenMiniApp={(url) => {
                  setMiniAppTitle('Mini App');
                  setMiniAppUrl(url);
                }}
              />
            ) : (
              <div
                className="relative flex min-h-0 flex-1 flex-col"
                onDragEnter={(event) => {
                  if (activeRoomIsBot) return;
                  event.preventDefault();
                  dragDepthRef.current += 1;
                  setMediaDropVisible(true);
                }}
                onDragLeave={(event) => {
                  if (activeRoomIsBot) return;
                  event.preventDefault();
                  dragDepthRef.current = Math.max(0, dragDepthRef.current - 1);
                  if (dragDepthRef.current === 0) setMediaDropVisible(false);
                }}
                onDragOver={(event) => {
                  if (activeRoomIsBot) return;
                  event.preventDefault();
                }}
                onDrop={(event) => {
                  if (activeRoomIsBot) return;
                  event.preventDefault();
                  dragDepthRef.current = 0;
                  setMediaDropVisible(false);
                  const files = extractFilesFromDataTransfer(event.dataTransfer);
                  if (files.length) queueMediaFiles(files, { sendAsFile: false });
                }}
              >
            <ChatMediaDropOverlay
              visible={mediaDropVisible && !activeRoomIsBot}
              onDropAsFile={(files) => {
                dragDepthRef.current = 0;
                setMediaDropVisible(false);
                queueMediaFiles(files, { sendAsFile: true });
              }}
              onDropCompressed={(files) => {
                dragDepthRef.current = 0;
                setMediaDropVisible(false);
                queueMediaFiles(files, { sendAsFile: false });
              }}
            />
            {pinnedMessage ? (
              <ChatPinnedMessageBanner
                senderName={pinnedMessage.senderName}
                preview={pinnedPreview}
                onClick={() => {
                  if (!scrollToChatMessage(pinnedMessage.id)) {
                    showToast('Закреплённое сообщение пока не загружено в ленте');
                  }
                }}
              />
            ) : null}
            <div className={cn('flex-1 space-y-2 overflow-y-auto px-4 py-4', isDragging && 'select-none')}>
              {visibleMessages.map((message, messageIndex) => {
                if (shouldSkipGroupedAlbumMessage(visibleMessages, messageIndex)) {
                  return null;
                }

                const previousMessage = visibleMessages[messageIndex - 1];
                const showDateSeparator = shouldShowChatDateSeparator(message.createdAt, previousMessage?.createdAt);

                if (isSystemMessage(message)) {
                  return (
                    <div key={message.id}>
                      {showDateSeparator ? <ChatDateSeparator date={message.createdAt} /> : null}
                      <div id={`msg-${message.id}`} className="flex justify-center px-2 py-1">
                        <p className="rounded-full bg-black/[0.06] px-3 py-1.5 text-xs text-[#667085]">
                          {getMessagePreviewText(message)}
                        </p>
                      </div>
                    </div>
                  );
                }

                const mine = message.senderId === user?.id;
                const e2ePayload = message.isEncrypted ? e2ePayloads[message.id] : null;
                const visibleText = getE2EMessageText({
                  message,
                  isE2E: activeRoomIsE2E,
                  peerE2eKey,
                  peerKeyLoading,
                  e2ePayload,
                  e2eError: e2eErrors[message.id]
                });
                const emojiContent =
                  message.type === 'EMOJI' || e2ePayload?.kind === 'emoji'
                    ? e2ePayload?.emojiId ?? message.content
                    : null;
                const forwardedFrom = parseForwardedFrom(message.metadataJson);
                const repliedMessage = message.replyToId ? messageById.get(message.replyToId) : null;
                const repliedVisibleText = repliedMessage
                  ? getE2EMessageText({
                      message: repliedMessage,
                      isE2E: activeRoomIsE2E,
                      peerE2eKey,
                      peerKeyLoading,
                      e2ePayload: repliedMessage.isEncrypted ? e2ePayloads[repliedMessage.id] : null,
                      e2eError: e2eErrors[repliedMessage.id]
                    })
                  : '';
                const isSelected = selectedMessageIds.includes(message.id);
                const isLargeEmoji = isSingleEmojiMessage({
                  type: message.type,
                  content: emojiContent ?? message.content,
                  visibleText
                });
                const largeEmojiNative = isLargeEmoji
                  ? getSingleEmojiNative({ type: message.type, content: emojiContent ?? message.content, visibleText })
                  : '';
                const albumMessages = collectAlbumMessages(visibleMessages, messageIndex);
                const isAlbumGroup = albumMessages.length > 1 && Boolean(parseChatMediaMetadata(message.metadataJson).albumId);
                const bubble = (
                  <div
                    className={cn(
                      'relative',
                      isLargeEmoji
                        ? 'bg-transparent px-0 py-0 shadow-none'
                        : cn(
                            'rounded-[18px] px-3 py-2 shadow-sm',
                            mine ? 'rounded-br-md bg-[#effdde] text-[#1f2430]' : 'rounded-bl-md bg-white text-[#1f2430]',
                            !selectionMode && 'max-w-[78%]'
                          )
                    )}
                  >
                    {!mine ? <p className="mb-1 text-xs font-semibold text-[#3390ec]">{message.senderName}</p> : null}
                    {forwardedFrom ? (
                      <p className="mb-1 text-xs font-medium text-[#3390ec]">↪️ Переслано от {forwardedFrom.senderName}</p>
                    ) : null}
                    {repliedMessage ? (
                      <RepliedMessagePreview
                        senderName={repliedMessage.senderName}
                        preview={getMessagePreviewText(repliedMessage, repliedVisibleText)}
                        onClick={() => scrollToChatMessage(repliedMessage.id)}
                        className={mine ? 'bg-black/[0.06]' : undefined}
                      />
                    ) : null}
                    {message.type === 'POLL' && message.poll ? (
                        <div className="space-y-2">
                          <p className="font-medium">{message.poll.question}</p>
                          {message.poll.options.map((option) => {
                            const total = message.poll!.options.reduce((sum, item) => sum + item.voteCount, 0) || 1;
                            const percent = Math.round((option.voteCount / total) * 100);
                            return (
                              <button
                                key={option.id}
                                type="button"
                                className="relative w-full overflow-hidden rounded-xl border border-[#dce3ec] px-3 py-2 text-left text-sm"
                                onClick={() => void voteChatPoll(message.id, [option.id], token).then((updated) => {
                                  setMessages((current) => current.map((item) => (item.id === updated.id ? updated : item)));
                                })}
                              >
                                <div className="absolute inset-y-0 left-0 bg-[#3390ec]/15" style={{ width: `${percent}%` }} />
                                <span className="relative flex justify-between gap-2">
                                  <span>{option.text}</span>
                                  <span>{percent}%</span>
                                </span>
                              </button>
                            );
                          })}
                        </div>
                      ) : message.type === 'LOCATION' ? (
                        (() => {
                          const locationMeta = parseLocationMetadata(message.metadataJson, e2ePayload);
                          if (!locationMeta || locationMeta.latitude == null || locationMeta.longitude == null) {
                            return <p className="text-sm text-[#667085]">Геопозиция недоступна</p>;
                          }
                          return (
                            <ChatLocationCard
                              latitude={locationMeta.latitude}
                              longitude={locationMeta.longitude}
                              address={locationMeta.address}
                              label={locationMeta.label}
                              variant={mine ? 'mine' : 'theirs'}
                            />
                          );
                        })()
                      ) : message.storageKey ? (
                        (() => {
                          if (isAlbumGroup) {
                            const captionMessage = albumMessages.find((item) => item.content?.trim());
                            return (
                              <div className="space-y-2">
                                <ChatMediaAlbumGrid
                                  messages={albumMessages}
                                  mediaUrls={mediaUrls}
                                  onImageClick={(item) => openImageLightbox(item)}
                                />
                                {captionMessage?.content ? (
                                  <p className="whitespace-pre-wrap text-sm">{captionMessage.content}</p>
                                ) : null}
                              </div>
                            );
                          }

                          const media = mediaUrls[message.storageKey];
                          const meta = parseMessageMetadata(message.metadataJson);
                          const fileName = e2ePayload?.fileName || meta.fileName || message.content || 'Файл';
                          if (media?.status === 'error') {
                            return (
                              <div className="space-y-2 text-sm text-[#667085]">
                                <p>{media.errorMessage ?? 'Не удалось загрузить файл'}</p>
                                <button
                                  type="button"
                                  className="font-medium text-[#3390ec] hover:underline"
                                  onClick={() => void loadChatMedia(message, true)}
                                >
                                  Повторить
                                </button>
                              </div>
                            );
                          }
                          if (!media?.blobUrl || media.status === 'loading') {
                            return (
                              <MediaImageSkeleton className="max-h-72 w-full max-w-[320px]" rounded="xl" />
                            );
                          }
                          if (message.type === 'IMAGE') {
                            return (
                              <button type="button" className="block overflow-hidden rounded-xl" onClick={() => openImageLightbox(message)}>
                                {/* eslint-disable-next-line @next/next/no-img-element */}
                                <img src={media.blobUrl} alt={fileName} className="max-h-72 max-w-full object-cover" />
                              </button>
                            );
                          }
                          if (message.type === 'VOICE' || message.type === 'AUDIO') {
                            const metaDuration = e2ePayload?.durationMs ?? parseMessageMetadata(message.metadataJson).durationMs;
                            return (
                              <VoiceMessagePlayer
                                src={media.blobUrl}
                                seed={message.storageKey ?? message.id}
                                durationMs={typeof metaDuration === 'number' ? metaDuration : undefined}
                                variant={mine ? 'mine' : 'theirs'}
                              />
                            );
                          }
                          if (message.type === 'VIDEO') {
                            const metaDuration = e2ePayload?.durationMs ?? parseMessageMetadata(message.metadataJson).durationMs;
                            return (
                              <ChatVideoPlayer
                                src={media.blobUrl}
                                durationMs={typeof metaDuration === 'number' ? metaDuration : undefined}
                                fileName={fileName}
                                variant={mine ? 'mine' : 'theirs'}
                              />
                            );
                          }
                          if (message.type === 'VIDEO_NOTE') {
                            const metaDuration = e2ePayload?.durationMs ?? parseMessageMetadata(message.metadataJson).durationMs;
                            return (
                              <ChatVideoNotePlayer
                                src={media.blobUrl}
                                durationMs={typeof metaDuration === 'number' ? metaDuration : undefined}
                                variant={mine ? 'mine' : 'theirs'}
                              />
                            );
                          }
                          return (
                            <button
                              type="button"
                              disabled={downloadingKey === message.storageKey}
                              onClick={() => void downloadChatFile(message)}
                              className="flex min-w-[220px] items-center gap-3 rounded-xl bg-black/5 px-3 py-2 text-left transition hover:bg-black/10 disabled:opacity-70"
                            >
                              <div className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-[#3390ec] text-xs font-bold text-white">
                                {downloadingKey === message.storageKey ? (
                                  <Loader2 className="h-4 w-4 animate-spin" />
                                ) : (
                                  fileIconLabel(fileName, message.mimeType)
                                )}
                              </div>
                              <div className="min-w-0 flex-1">
                                <p className="truncate text-sm font-medium">{fileName}</p>
                                <p className="text-xs text-[#667085]">{formatFileSize(meta.fileSize) || 'Документ'}</p>
                              </div>
                              <FileText className="h-4 w-4 shrink-0 text-[#667085]" />
                            </button>
                          );
                        })()
                      ) : isLargeEmoji ? (
                        <div className="relative inline-flex min-w-[72px] flex-col items-center">
                          <span className="text-[56px] leading-none">{largeEmojiNative}</span>
                          <div className="absolute bottom-0 right-0 flex items-center gap-0.5 rounded-full bg-black/45 px-1.5 py-0.5 text-[10px] text-white">
                            {message.editedAt ? <span>изм.</span> : null}
                            <span>{formatMessageTime(message.createdAt)}</span>
                            {mine ? (
                              message.readByAll ? (
                                <CheckCheck className="h-3 w-3" aria-label="Прочитано" />
                              ) : (
                                <Check className="h-3 w-3" aria-label="Отправлено" />
                              )
                            ) : null}
                          </div>
                        </div>
                      ) : emojiContent ? (
                        <div className="py-1">
                          <ChatEmojiContent content={emojiContent} size={32} />
                        </div>
                      ) : (
                        <div className="whitespace-pre-wrap break-words text-[15px] leading-relaxed">
                          <ChatEmojiContent content={visibleText} size={22} />
                        </div>
                      )}
                      {!isLargeEmoji ? (
                        <div className={cn('mt-1 flex items-center justify-end gap-1 text-[11px]', mine ? 'text-[#7ea06a]' : 'text-[#a8adbc]')}>
                          {message.editedAt ? <span className="mr-1">изменено</span> : null}
                          <span>{formatMessageTime(message.createdAt)}</span>
                          {mine ? (
                            message.readByAll ? (
                              <CheckCheck className="h-3.5 w-3.5 text-[#3390ec]" aria-label="Прочитано" />
                            ) : (
                              <Check className="h-3.5 w-3.5" aria-label="Отправлено" />
                            )
                          ) : null}
                        </div>
                      ) : null}
                      {!isLargeEmoji ? (
                        <ChatMessageReactions
                          reactions={message.reactions}
                          onToggle={(emoji) => void handleToggleReaction(message.id, emoji)}
                        />
                      ) : null}
                    </div>
                );

                return (
                  <div key={message.id}>
                    {showDateSeparator ? <ChatDateSeparator date={message.createdAt} /> : null}
                  <div
                    id={`msg-${message.id}`}
                    className={cn('group flex gap-2', mine ? 'justify-end' : 'justify-start', isDragging && 'select-none')}
                    onMouseDown={(event) => {
                      if (isChatInteractiveTarget(event.target)) return;
                      handleMessagePointerDown(message.id, event);
                    }}
                    onMouseEnter={() => handleDragEnterMessage(message.id)}
                    onClick={(event) => {
                      if (selectionMode) return;
                      if (event.ctrlKey || event.metaKey || event.shiftKey) {
                        handleSelectionPointer(message.id, event);
                      }
                    }}
                  >
                    {!mine ? (
                      <UserAvatar
                        userId={message.senderId}
                        displayName={message.senderName}
                        hasAvatar={message.senderHasAvatar}
                        token={token}
                        isVerified={message.senderIsVerified}
                        verificationIcon={message.senderVerificationIcon}
                        className="z-10 -mr-3 -mt-0.5 h-8 w-8 shrink-0 self-start ring-2 ring-[#eef1f6]"
                        badgeSize="xs"
                      />
                    ) : null}
                    {selectionMode ? (
                      <ChatSelectionContextMenu
                        count={selectedMessageIds.length}
                        canPin={selectedMessageIds.length === 1}
                        pinned={getSelectedMessages()[0]?.isPinned}
                        onReply={handleSelectionReply}
                        onCopy={() => void handleBulkCopy()}
                        onForward={() => setForwardDialogOpen(true)}
                        onDelete={() => void handleBulkDelete()}
                        onTogglePin={handleSelectionPin}
                        onCancel={exitSelectionMode}
                      >
                        <SelectableMessageWrapper
                          selected={isSelected}
                          selectionMode
                          align={mine ? 'right' : 'left'}
                          onClick={() => toggleSelectedMessage(message.id)}
                        >
                          {bubble}
                        </SelectableMessageWrapper>
                      </ChatSelectionContextMenu>
                    ) : (
                      <ChatMessageContextMenu
                        message={message}
                        userId={user?.id}
                        isE2E={activeRoomIsE2E}
                        visibleText={visibleText}
                        onEdit={() => void startEditMessage(message)}
                        onDelete={() => requestDeleteMessages([message.id])}
                        onReply={() => {
                          exitSelectionMode();
                          setReplyToMessage(message);
                          setEditingMessageId(null);
                          setDraft('');
                          setEmojiOpen(false);
                        }}
                        onForward={() => {
                          setSelectedMessageIds([message.id]);
                          setForwardDialogOpen(true);
                        }}
                        onTogglePin={() => void handleTogglePin(message)}
                        onSelect={() => enterSelectionMode(message.id)}
                        onToggleReaction={(emoji) => void handleToggleReaction(message.id, emoji)}
                        onCopy={() => showToast('Текст скопирован')}
                      >
                        {bubble}
                      </ChatMessageContextMenu>
                    )}
                    {mine ? (
                      <UserAvatar
                        userId={user?.id ?? message.senderId}
                        displayName={user?.displayName ?? message.senderName}
                        hasAvatar={Boolean(user?.hasAvatar)}
                        token={token}
                        isVerified={user?.isVerified}
                        verificationIcon={user?.verificationIcon}
                        className="z-10 -ml-3 -mt-0.5 h-8 w-8 shrink-0 self-start ring-2 ring-[#eef1f6]"
                        badgeSize="xs"
                      />
                    ) : null}
                  </div>
                  </div>
                );
              })}
              <TypingIndicator roomType={activeRoom.type} typers={typers} />
              <div ref={messagesEndRef} />
            </div>

            {selectionMode ? (
              <ChatSelectionToolbar
                count={selectedMessageIds.length}
                deleting={bulkDeleting}
                onCancel={exitSelectionMode}
                onCopy={() => void handleBulkCopy()}
                onForward={() => setForwardDialogOpen(true)}
                onDelete={() => void handleBulkDelete()}
              />
            ) : (
            <div className="border-t border-[#dce3ec] bg-white px-2 py-2 pb-[max(0.5rem,env(safe-area-inset-bottom))] sm:px-3 sm:py-3">
              {editingMessageId ? (
                <ChatMessageEditBanner
                  preview={draft.trim() || messages.find((item) => item.id === editingMessageId)?.content || undefined}
                  onCancel={cancelEditMessage}
                />
              ) : null}
              {replyToMessage ? (
                <div className="mb-2 flex items-center justify-between rounded-xl bg-[#f4f5f8] px-3 py-2 text-sm">
                  <div className="min-w-0">
                    <p className="font-medium text-[#3390ec]">Ответ для {replyToMessage.senderName}</p>
                    <p className="truncate text-[#667085]">{getMessageCopyText(replyToMessage) || 'Сообщение'}</p>
                  </div>
                  <Button type="button" variant="ghost" size="icon" className="h-8 w-8 shrink-0" onClick={() => setReplyToMessage(null)}>
                    <X className="h-4 w-4" />
                  </Button>
                </div>
              ) : null}
              {emojiOpen ? (
                <div className="mb-2">
                  <EmojiPicker
                    className="w-full"
                    onSelect={(nativeEmoji) => insertEmojiToDraft(nativeEmoji)}
                  />
                </div>
              ) : null}
              <div className="flex items-end gap-2">
                <Button size="sm" variant="ghost" className="h-10 w-10 rounded-xl p-0" onClick={() => fileInputRef.current?.click()}>
                  <Paperclip className="h-4 w-4" />
                </Button>
                {!activeRoomIsBot ? (
                  <Button
                    size="sm"
                    variant="ghost"
                    className="h-10 w-10 rounded-xl p-0"
                    onClick={() => setLocationShareOpen(true)}
                    title="Отправить геопозицию"
                    aria-label="Отправить геопозицию"
                  >
                    <MapPin className="h-4 w-4" />
                  </Button>
                ) : null}
                {!activeRoomIsE2E ? (
                <Button size="sm" variant="ghost" className="hidden h-10 w-10 rounded-xl p-0 sm:flex" onClick={() => setPollOpen(true)}>
                  <BarChart3 className="h-4 w-4" />
                </Button>
                ) : null}
                <Button size="sm" variant="ghost" className="h-10 w-10 rounded-xl p-0" onClick={() => setEmojiOpen((value) => !value)}>
                  <Smile className="h-4 w-4" />
                </Button>
                <textarea
                  value={draft}
                  onChange={(event) => setDraft(event.target.value)}
                  placeholder={editingMessageId ? 'Измените сообщение' : 'Сообщение'}
                  rows={1}
                  className="max-h-32 min-h-[44px] flex-1 resize-none rounded-[20px] border border-[#dce3ec] bg-[#f4f5f8] px-4 py-3 text-[15px] outline-none focus:border-[#3390ec]"
                  onKeyDown={(event) => {
                    if (event.key === 'Enter' && !event.shiftKey) {
                      event.preventDefault();
                      if (editingMessageId) {
                        void submitEditMessage();
                      } else {
                        void sendText();
                      }
                    }
                    if (event.key === 'Escape' && editingMessageId) {
                      cancelEditMessage();
                    }
                  }}
                />
                {draft.trim() || editingMessageId ? (
                  <Button
                    className="h-11 w-11 rounded-full p-0"
                    disabled={sending}
                    onClick={() => {
                      if (editingMessageId) {
                        void submitEditMessage();
                      } else {
                        void sendText();
                      }
                    }}
                  >
                    {sending ? <Loader2 className="h-4 w-4 animate-spin" /> : <Send className="h-4 w-4" />}
                  </Button>
                ) : (
                  <>
                    <Button
                      size="sm"
                      variant="ghost"
                      className="h-10 w-10 rounded-xl p-0"
                      title="Записать кружок"
                      onClick={() => {
                        setVideoCaptureMode('note');
                        setVideoCaptureOpen(true);
                      }}
                    >
                      <Circle className="h-4 w-4" />
                    </Button>
                    <Button
                      size="sm"
                      variant="ghost"
                      className="h-10 w-10 rounded-xl p-0"
                      title="Записать видео"
                      onClick={() => {
                        setVideoCaptureMode('video');
                        setVideoCaptureOpen(true);
                      }}
                    >
                      <Video className="h-4 w-4" />
                    </Button>
                    <Button
                      className={cn('h-11 w-11 rounded-full p-0', recording && 'bg-red-500 hover:bg-red-600')}
                      onMouseDown={() => void startVoiceRecording()}
                      onMouseUp={stopVoiceRecording}
                      onMouseLeave={stopVoiceRecording}
                      onTouchStart={() => void startVoiceRecording()}
                      onTouchEnd={stopVoiceRecording}
                    >
                      <Mic className="h-4 w-4" />
                    </Button>
                  </>
                )}
              </div>
            </div>
            )}
              </div>
            )}
          </>
        ) : (
          <div className="flex flex-1 items-center justify-center text-[#667085]">Выберите чат</div>
        )}
      </section>

      <input
        ref={videoInputRef}
        type="file"
        className="hidden"
        accept="video/*"
        onChange={(event) => {
          const files = Array.from(event.target.files ?? []);
          files.forEach((file) => void uploadChatFile(file));
          event.target.value = '';
        }}
      />

      <input
        ref={fileInputRef}
        type="file"
        className="hidden"
        multiple
        accept="*/*"
        onChange={(event) => {
          const files = Array.from(event.target.files ?? []);
          if (files.length) queueMediaFiles(files);
          event.target.value = '';
        }}
      />

      <ChatVideoCaptureDialog
        open={videoCaptureOpen}
        mode={videoCaptureMode}
        onClose={() => setVideoCaptureOpen(false)}
        onCaptured={(file, durationMs) => {
          void uploadChatFile(file, {
            videoNote: videoCaptureMode === 'note',
            durationMs
          });
        }}
      />

      <ChatLocationShareDialog
        open={locationShareOpen}
        sending={sending}
        onOpenChange={setLocationShareOpen}
        onSend={sendLocation}
        onLocateError={(message) => showToast(message)}
      />

      <ChatMediaComposeDialog
        open={mediaComposer.open}
        items={mediaComposer.items}
        caption={mediaComposer.caption}
        sendAsFile={mediaComposer.sendAsFile}
        hasImages={mediaComposer.hasImages}
        maxFiles={mediaComposer.maxFiles}
        sending={sending}
        onCaptionChange={mediaComposer.setCaption}
        onSendAsFileChange={mediaComposer.setSendAsFile}
        onRemoveItem={mediaComposer.removeItem}
        onAddFiles={(files) => void mediaComposer.addFiles(files)}
        onClose={mediaComposer.close}
        onSend={() => void submitMediaCompose()}
      />

      <ChatImageLightbox
        open={lightboxIndex !== null}
        images={chatImageMessages}
        index={lightboxIndex ?? 0}
        mediaUrls={mediaUrls}
        onClose={() => setLightboxIndex(null)}
        onIndexChange={setLightboxIndex}
        onDownload={(message) => void downloadChatFile(message)}
      />

      <FamilyInviteDialog
        groupId={groupId}
        group={group}
        open={inviteOpen}
        onOpenChange={setInviteOpen}
        onInvited={() => void loadGroup()}
      />

      <ChatForwardDialog
        open={forwardDialogOpen}
        onOpenChange={setForwardDialogOpen}
        rooms={rooms}
        viewerUserId={user?.id ?? ''}
        token={token}
        currentRoomId={activeRoomId ?? undefined}
        forwarding={forwarding}
        onSelectRoom={(roomId) => void handleForwardToRoom(roomId)}
      />

      <ChatToolsDialog
        open={chatToolsOpen}
        onOpenChange={setChatToolsOpen}
        messages={visibleMessages}
        defaultTab={chatToolsTab}
        onJumpToMessage={scrollToChatMessage}
        getMessagePreview={(message) =>
          getMessagePreviewText(
            message,
            getE2EMessageText({
              message,
              isE2E: activeRoomIsE2E,
              peerE2eKey,
              peerKeyLoading,
              e2ePayload: message.isEncrypted ? e2ePayloads[message.id] : null,
              e2eError: e2eErrors[message.id]
            })
          )
        }
        getMediaUrl={(message) => (message.storageKey ? mediaUrls[message.storageKey]?.blobUrl ?? null : null)}
      />

      <ChatDeleteMessageDialog
        open={deleteMessagesDialogOpen}
        count={pendingDeleteMessageIds.length}
        loading={bulkDeleting}
        onOpenChange={(open) => {
          setDeleteMessagesDialogOpen(open);
          if (!open) setPendingDeleteMessageIds([]);
        }}
        onConfirm={() => void confirmDeleteMessages()}
      />
      <BotMiniAppSheet
        url={miniAppUrl}
        title={miniAppTitle}
        authToken={token}
        onClose={() => setMiniAppUrl(null)}
      />

      <Dialog open={familyMembersOpen} onOpenChange={setFamilyMembersOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[480px]">
          <DialogHeader>
            <DialogTitle>Участники семьи</DialogTitle>
          </DialogHeader>
          <p className="text-sm text-[#667085]">
            {group?.name} · {group?.members?.length ?? 0} {group?.members?.length === 1 ? 'участник' : 'участников'}
          </p>
          <div className="mt-3 max-h-[420px] space-y-2 overflow-y-auto">
            {(group?.members ?? []).map((member) => {
              const isSelf = member.userId === user?.id;
              const canKick = !isSelf && isFamilyOwner && member.role !== 'owner' && !member.isBot;
              const presence = presenceByUserId.get(member.userId);

              return (
                <div key={member.id} className="flex items-center gap-3 rounded-2xl bg-[#f4f5f8] px-3 py-3">
                  <button
                    type="button"
                    className="flex min-w-0 flex-1 items-center gap-3 text-left"
                    onClick={() => {
                      if (!isSelf) {
                        void openMemberChatFromList(member.userId, { isBot: member.isBot });
                      }
                    }}
                  >
                  <AvatarWithPresence
                    userId={member.userId}
                    displayName={member.displayName}
                    hasAvatar={member.hasAvatar}
                    token={token}
                    isVerified={member.isVerified}
                    verificationIcon={member.verificationIcon}
                    online={isSelf ? undefined : presence?.online}
                    className="h-10 w-10"
                  />
                  <div className="min-w-0 flex-1">
                    <p className="truncate font-medium">
                      {member.displayName}
                      {member.isBot ? ' 🤖' : null}
                      {isSelf ? <span className="ml-1 text-xs font-normal text-[#667085]">(Вы)</span> : null}
                    </p>
                    <p className="text-xs text-[#667085]">{member.isBot ? 'Бот' : familyMemberRoleLabel(member.role)}</p>
                    {!isSelf ? (
                      <p className={cn('text-xs', member.isBot ? 'text-[#3390ec]' : presence?.online ? 'font-medium text-emerald-600' : 'text-[#a8adbc]')}>
                        {member.isBot ? 'Открыть чат с ботом' : presence ? formatPresenceStatus(presence) : 'Статус неизвестен'}
                      </p>
                    ) : null}
                  </div>
                  </button>
                  {!isSelf && !member.isBot ? (
                    <Button
                      size="sm"
                      variant="ghost"
                      className="h-8 shrink-0 rounded-xl text-xs text-[#3390ec]"
                      onClick={(event) => {
                        event.stopPropagation();
                        void createSecretChatWithMember(member.userId);
                      }}
                    >
                      🔒 E2E
                    </Button>
                  ) : null}
                  {canKick ? (
                    <Button
                      size="sm"
                      variant="ghost"
                      className="h-8 shrink-0 rounded-xl text-xs text-red-600 hover:text-red-700"
                      onClick={(event) => {
                        event.stopPropagation();
                        void handleRemoveFromFamily(member.id);
                      }}
                    >
                      Удалить
                    </Button>
                  ) : null}
                </div>
              );
            })}
          </div>
          <Button className="mt-4 w-full rounded-xl" variant="secondary" onClick={() => {
            setFamilyMembersOpen(false);
            setInviteOpen(true);
          }}>
            <UserPlus className="mr-2 h-4 w-4" />
            Пригласить в семью
          </Button>
          {isFamilyOwner && otherHumanMembers.length > 0 ? (
            <Button
              className="mt-2 w-full rounded-xl"
              variant="secondary"
              onClick={() => {
                setFamilyMembersOpen(false);
                openTransferOwnershipDialog();
              }}
            >
              <ArrowRightLeft className="mr-2 h-4 w-4" />
              Передать управление
            </Button>
          ) : null}
          <Button
            className="mt-2 w-full rounded-xl"
            variant="secondary"
            onClick={() => {
              setFamilyMembersOpen(false);
              openLeaveFamilyDialog();
            }}
          >
            <LogOut className="mr-2 h-4 w-4" />
            Покинуть семью
          </Button>
          {isFamilyOwner ? (
            <Button
              className="mt-2 w-full rounded-xl bg-red-600 hover:bg-red-700"
              onClick={() => {
                setFamilyMembersOpen(false);
                setDeleteFamilyDialogOpen(true);
              }}
            >
              <Trash2 className="mr-2 h-4 w-4" />
              Удалить семью
            </Button>
          ) : null}
        </DialogContent>
      </Dialog>

      <Dialog open={transferOwnershipDialogOpen} onOpenChange={setTransferOwnershipDialogOpen}>
        <DialogContent className="max-h-[90dvh] overflow-y-auto rounded-[28px] sm:max-w-[480px]">
          <DialogHeader>
            <DialogTitle>Передать управление семьёй</DialogTitle>
          </DialogHeader>
          <p className="text-sm leading-relaxed text-[#667085]">
            Выберите участника, который станет новым главой семьи «{group?.name}». Вы останетесь участником и сможете
            покинуть семью в любой момент.
          </p>
          <div className="mt-4 max-h-[280px] space-y-2 overflow-y-auto">
            {otherHumanMembers.map((member) => {
              const selected = selectedNewOwnerUserId === member.userId;
              return (
                <button
                  key={member.id}
                  type="button"
                  onClick={() => setSelectedNewOwnerUserId(member.userId)}
                  className={cn(
                    'flex w-full items-center gap-3 rounded-2xl px-3 py-3 text-left transition',
                    selected ? 'bg-[#3390ec]/10 ring-2 ring-[#3390ec]/40' : 'bg-[#f4f5f8] hover:bg-[#eceef4]'
                  )}
                >
                  <AvatarWithPresence
                    userId={member.userId}
                    displayName={member.displayName}
                    hasAvatar={member.hasAvatar}
                    token={token}
                    isVerified={member.isVerified}
                    verificationIcon={member.verificationIcon}
                    className="h-10 w-10"
                  />
                  <div className="min-w-0 flex-1">
                    <p className="truncate font-medium">{member.displayName}</p>
                    <p className="text-xs text-[#667085]">{familyMemberRoleLabel(member.role)}</p>
                  </div>
                  {selected ? <Check className="h-5 w-5 shrink-0 text-[#3390ec]" /> : null}
                </button>
              );
            })}
          </div>
          <div className="mt-6 flex flex-col-reverse gap-3 sm:flex-row">
            <Button
              variant="secondary"
              className="flex-1"
              disabled={transferringOwnership}
              onClick={() => setTransferOwnershipDialogOpen(false)}
            >
              Отмена
            </Button>
            <Button
              className="flex-1"
              disabled={transferringOwnership || !selectedNewOwnerUserId}
              onClick={() => void confirmTransferOwnership()}
            >
              {transferringOwnership ? (
                <>
                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  Передаём...
                </>
              ) : (
                'Передать управление'
              )}
            </Button>
          </div>
        </DialogContent>
      </Dialog>

      <Dialog open={leaveFamilyDialogOpen} onOpenChange={setLeaveFamilyDialogOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[480px]">
          <DialogHeader>
            <DialogTitle>Покинуть семью «{group?.name}»?</DialogTitle>
          </DialogHeader>
          {ownerMustTransfer ? (
            <>
              <p className="text-sm leading-relaxed text-[#667085]">
                Вы создатель семьи. Перед выходом передайте управление другому участнику — он станет новым главой
                семьи.
              </p>
              <div className="mt-4 max-h-[280px] space-y-2 overflow-y-auto">
                {otherHumanMembers.map((member) => {
                  const selected = selectedNewOwnerUserId === member.userId;
                  return (
                    <button
                      key={member.id}
                      type="button"
                      onClick={() => setSelectedNewOwnerUserId(member.userId)}
                      className={cn(
                        'flex w-full items-center gap-3 rounded-2xl px-3 py-3 text-left transition',
                        selected ? 'bg-[#3390ec]/10 ring-2 ring-[#3390ec]/40' : 'bg-[#f4f5f8] hover:bg-[#eceef4]'
                      )}
                    >
                      <AvatarWithPresence
                        userId={member.userId}
                        displayName={member.displayName}
                        hasAvatar={member.hasAvatar}
                        token={token}
                        isVerified={member.isVerified}
                        verificationIcon={member.verificationIcon}
                        className="h-10 w-10"
                      />
                      <div className="min-w-0 flex-1">
                        <p className="truncate font-medium">{member.displayName}</p>
                        <p className="text-xs text-[#667085]">{familyMemberRoleLabel(member.role)}</p>
                      </div>
                      {selected ? <Check className="h-5 w-5 shrink-0 text-[#3390ec]" /> : null}
                    </button>
                  );
                })}
              </div>
            </>
          ) : ownerLeaveDeletesFamily ? (
            <p className="text-sm leading-relaxed text-[#667085]">
              В семье больше нет других участников. Семья и все чаты будут полностью удалены без возможности
              восстановления.
            </p>
          ) : (
            <p className="text-sm leading-relaxed text-[#667085]">
              Семья исчезнет из вашего профиля вместе со всеми чатами. У остальных участников переписка с вами
              сохранится с пометкой, что вы больше не состоите в семье.
            </p>
          )}
          <div className="mt-6 flex gap-3">
            <Button
              variant="secondary"
              className="flex-1"
              disabled={leavingFamily}
              onClick={() => setLeaveFamilyDialogOpen(false)}
            >
              Отмена
            </Button>
            <Button
              className="flex-1 bg-red-600 hover:bg-red-700"
              disabled={leavingFamily || (ownerMustTransfer && !selectedNewOwnerUserId)}
              onClick={() => void confirmLeaveFamily()}
            >
              {leavingFamily ? (
                <>
                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  Выходим...
                </>
              ) : (
                'Покинуть семью'
              )}
            </Button>
          </div>
        </DialogContent>
      </Dialog>

      <Dialog open={deleteFamilyDialogOpen} onOpenChange={setDeleteFamilyDialogOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[440px]">
          <DialogHeader>
            <DialogTitle>Удалить семью «{group?.name}»?</DialogTitle>
          </DialogHeader>
          <p className="text-sm leading-relaxed text-[#667085]">
            Все участники будут исключены из семьи, все чаты и сообщения будут удалены без возможности
            восстановления. Это действие нельзя отменить.
          </p>
          <div className="mt-6 flex gap-3">
            <Button variant="secondary" className="flex-1" disabled={deletingFamily} onClick={() => setDeleteFamilyDialogOpen(false)}>
              Отмена
            </Button>
            <Button className="flex-1 bg-red-600 hover:bg-red-700" disabled={deletingFamily} onClick={() => void confirmDeleteFamily()}>
              {deletingFamily ? (
                <>
                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  Удаляем...
                </>
              ) : (
                'Удалить семью'
              )}
            </Button>
          </div>
        </DialogContent>
      </Dialog>

      <Dialog open={membersOpen} onOpenChange={setMembersOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[480px]">
          <DialogHeader><DialogTitle>Участники чата</DialogTitle></DialogHeader>
          <div className="max-h-[420px] space-y-2 overflow-y-auto">
            {activeRoom?.members.map((member) => {
              const familyMember = group?.members?.find((item) => item.userId === member.userId);
              const presence = presenceByUserId.get(member.userId);
              const canRemoveFromChat =
                canManageChatMembers &&
                (activeRoom.type === 'GROUP' || activeRoom.type === 'BOT') &&
                member.userId !== user?.id &&
                member.userId !== activeRoom.peerUserId &&
                !(member.isChatCreator && !isFamilyOwner);
              const canRemoveFromFamily = isFamilyOwner && member.familyRole !== 'owner' && familyMember;

              return (
                <div key={member.id} className="flex items-center gap-3 rounded-2xl bg-[#f4f5f8] px-3 py-3">
                  <AvatarWithPresence
                    userId={member.userId}
                    displayName={member.displayName}
                    hasAvatar={member.hasAvatar}
                    token={token}
                    isVerified={member.isVerified}
                    verificationIcon={member.verificationIcon}
                    online={presence?.online}
                    className="h-10 w-10"
                  />
                  <div className="min-w-0 flex-1">
                    <p className="truncate font-medium">
                      {member.displayName}
                      {member.inFamily === false ? (
                        <span className="ml-1.5 rounded-md bg-[#eceef4] px-1.5 py-0.5 text-[10px] font-medium text-[#667085]">
                          не в семье
                        </span>
                      ) : null}
                    </p>
                    <p className="text-xs text-[#667085]">{memberRoleLabel(member)}</p>
                    <p className={cn('text-xs', presence?.online ? 'font-medium text-emerald-600' : 'text-[#a8adbc]')}>
                      {presence ? formatPresenceStatus(presence) : 'Статус неизвестен'}
                    </p>
                  </div>
                  <div className="flex shrink-0 flex-col gap-1">
                    {canRemoveFromChat ? (
                      <Button size="sm" variant="secondary" className="h-8 rounded-xl text-xs" onClick={() => void handleRemoveFromChat(member.userId)}>
                        <Trash2 className="mr-1 h-3.5 w-3.5" />
                        Из чата
                      </Button>
                    ) : null}
                    {canRemoveFromFamily ? (
                      <Button size="sm" variant="ghost" className="h-8 rounded-xl text-xs text-red-600 hover:text-red-700" onClick={() => void handleRemoveFromFamily(familyMember!.id)}>
                        Из семьи
                      </Button>
                    ) : null}
                  </div>
                </div>
              );
            })}
          </div>
          {(activeRoom?.type === 'GROUP' || activeRoom?.type === 'BOT') && familyMembersNotInRoom.length > 0 ? (
            <Button className="mt-4 w-full rounded-xl" onClick={() => {
              setMembersOpen(false);
              setAddMembersOpen(true);
            }}>
              <UserPlus className="mr-2 h-4 w-4" />
              Добавить участника
            </Button>
          ) : null}
        </DialogContent>
      </Dialog>

      <Dialog open={addMembersOpen} onOpenChange={setAddMembersOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[420px]">
          <DialogHeader><DialogTitle>Добавить в чат</DialogTitle></DialogHeader>
          <div className="space-y-2">
            {familyMembersNotInRoom.length ? (
              familyMembersNotInRoom.map((member) => {
                const presence = presenceByUserId.get(member.userId);
                return (
                <button
                  key={member.id}
                  type="button"
                  className="flex w-full items-center gap-3 rounded-2xl bg-[#f4f5f8] px-3 py-3 text-left transition hover:bg-[#eceef4]"
                  onClick={() => void handleAddRoomMember(member.userId)}
                >
                  <AvatarWithPresence
                    userId={member.userId}
                    displayName={member.displayName}
                    hasAvatar={member.hasAvatar}
                    token={token}
                    isVerified={member.isVerified}
                    verificationIcon={member.verificationIcon}
                    online={presence?.online}
                    className="h-9 w-9"
                  />
                  <div>
                    <p className="font-medium">{member.displayName}</p>
                    <p className="text-xs text-[#667085]">{member.role === 'owner' ? 'Создатель семьи' : 'Участник семьи'}</p>
                  </div>
                </button>
                );
              })
            ) : (
              <p className="py-6 text-center text-sm text-[#667085]">Все участники семьи уже в этом чате</p>
            )}
          </div>
        </DialogContent>
      </Dialog>

      <Dialog open={createRoomOpen} onOpenChange={setCreateRoomOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[480px]">
          <DialogHeader><DialogTitle>Новый групповой чат</DialogTitle></DialogHeader>
          <Input placeholder="Название чата" value={newRoomName} onChange={(event) => setNewRoomName(event.target.value)} />
          <div className="mt-3 space-y-2">
            <p className="text-sm font-medium">Участники</p>
            {(group?.members ?? []).filter((member) => member.userId !== user?.id).map((member) => (
              <label key={member.id} className="flex items-center gap-2 rounded-xl bg-[#f4f5f8] px-3 py-2 text-sm">
                <input
                  type="checkbox"
                  checked={selectedMembers.includes(member.userId)}
                  onChange={(event) => {
                    setSelectedMembers((current) =>
                      event.target.checked ? [...current, member.userId] : current.filter((id) => id !== member.userId)
                    );
                  }}
                />
                {member.displayName}
              </label>
            ))}
          </div>
          <Button className="mt-4 w-full rounded-xl" onClick={() => void submitCreateRoom()}>Создать чат</Button>
        </DialogContent>
      </Dialog>

      <Dialog open={pollOpen} onOpenChange={setPollOpen}>
        <DialogContent className="rounded-[28px] sm:max-w-[480px]">
          <DialogHeader><DialogTitle>Создать опрос</DialogTitle></DialogHeader>
          <Input placeholder="Вопрос" value={pollQuestion} onChange={(event) => setPollQuestion(event.target.value)} />
          <div className="mt-3 space-y-2">
            {pollOptions.map((option, index) => (
              <Input
                key={index}
                placeholder={`Вариант ${index + 1}`}
                value={option}
                onChange={(event) => setPollOptions((current) => current.map((item, i) => (i === index ? event.target.value : item)))}
              />
            ))}
          </div>
          <Button variant="secondary" className="mt-2 rounded-xl" onClick={() => setPollOptions((current) => [...current, ''])}>
            Добавить вариант
          </Button>
          <Button className="mt-4 w-full rounded-xl" onClick={() => void submitPoll()}>Отправить опрос</Button>
        </DialogContent>
      </Dialog>
    </div>
  );
}