Termix/src/ui/desktop/apps/features/file-manager/FileManager.tsx

import React, {
  useState,
  useEffect,
  useRef,
  useCallback,
  useMemo,
} from "react";
import { FileManagerGrid } from "./FileManagerGrid.tsx";
import { FileManagerSidebar } from "./FileManagerSidebar.tsx";
import { FileManagerContextMenu } from "./FileManagerContextMenu.tsx";
import { useFileSelection } from "./hooks/useFileSelection.ts";
import { useDragAndDrop } from "./hooks/useDragAndDrop.ts";
import {
  WindowManager,
  useWindowManager,
} from "./components/WindowManager.tsx";
import { FileWindow } from "./components/FileWindow.tsx";
import { DiffWindow } from "./components/DiffWindow.tsx";
import { useDragToDesktop } from "../../../../hooks/useDragToDesktop.ts";
import { useDragToSystemDesktop } from "../../../../hooks/useDragToSystemDesktop.ts";
import { useConfirmation } from "@/hooks/use-confirmation.ts";
import { Button } from "@/components/ui/button.tsx";
import { Input } from "@/components/ui/input.tsx";
import { toast } from "sonner";
import { useTranslation } from "react-i18next";
import { TOTPDialog } from "@/ui/desktop/navigation/dialogs/TOTPDialog.tsx";
import { SSHAuthDialog } from "@/ui/desktop/navigation/dialogs/SSHAuthDialog.tsx";
import { WarpgateDialog } from "@/ui/desktop/navigation/dialogs/WarpgateDialog.tsx";
import { PermissionsDialog } from "./components/PermissionsDialog.tsx";
import { CompressDialog } from "./components/CompressDialog.tsx";
import { SudoPasswordDialog } from "./SudoPasswordDialog.tsx";
import {
  Upload,
  FolderPlus,
  FilePlus,
  RefreshCw,
  Search,
  Grid3X3,
  List,
  ArrowUpDown,
} from "lucide-react";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu.tsx";
import { TerminalWindow } from "./components/TerminalWindow.tsx";
import type { SSHHost, FileItem } from "../../../types/index.js";
import {
  ConnectionLogProvider,
  useConnectionLog,
} from "@/ui/desktop/navigation/connection-log/ConnectionLogContext.tsx";
import { ConnectionLog } from "@/ui/desktop/navigation/connection-log/ConnectionLog.tsx";
import { SimpleLoader } from "@/ui/desktop/navigation/animations/SimpleLoader.tsx";
import {
  listSSHFiles,
  resolveSSHPath,
  uploadSSHFile,
  downloadSSHFile,
  createSSHFile,
  createSSHFolder,
  deleteSSHItem,
  copySSHItem,
  renameSSHItem,
  moveSSHItem,
  connectSSH,
  verifySSHTOTP,
  verifySSHWarpgate,
  getSSHStatus,
  keepSSHAlive,
  identifySSHSymlink,
  addRecentFile,
  addPinnedFile,
  removePinnedFile,
  removeRecentFile,
  addFolderShortcut,
  getPinnedFiles,
  logActivity,
  changeSSHPermissions,
  extractSSHArchive,
  compressSSHFiles,
  setSudoPassword,
} from "@/ui/main-axios.ts";
import type { SidebarItem } from "./FileManagerSidebar.tsx";

interface FileManagerProps {
  initialHost?: SSHHost | null;
  onClose?: () => void;
}

interface CreateIntent {
  id: string;
  type: "file" | "directory";
  defaultName: string;
  currentName: string;
}

function formatFileSize(bytes?: number): string {
  if (bytes === undefined || bytes === null) return "-";
  if (bytes === 0) return "0 B";

  const units = ["B", "KB", "MB", "GB", "TB"];
  let size = bytes;
  let unitIndex = 0;

  while (size >= 1024 && unitIndex < units.length - 1) {
    size /= 1024;
    unitIndex++;
  }

  const formattedSize =
    size < 10 && unitIndex > 0 ? size.toFixed(1) : Math.round(size).toString();
  return `${formattedSize} ${units[unitIndex]}`;
}

function FileManagerContent({ initialHost, onClose }: FileManagerProps) {
  const { openWindow } = useWindowManager();
  const { t } = useTranslation();
  const { confirmWithToast } = useConfirmation();
  const {
    addLog,
    clearLogs,
    isExpanded: isConnectionLogExpanded,
  } = useConnectionLog();

  const [currentHost] = useState<SSHHost | null>(initialHost || null);
  const [currentPath, setCurrentPath] = useState(
    initialHost?.defaultPath || "/",
  );
  const [files, setFiles] = useState<FileItem[]>([]);
  const [isLoading, setIsLoading] = useState(false);
  const [sshSessionId, setSshSessionId] = useState<string | null>(null);
  const [isReconnecting, setIsReconnecting] = useState<boolean>(false);
  const [searchQuery, setSearchQuery] = useState("");
  const [lastRefreshTime, setLastRefreshTime] = useState<number>(0);
  const [viewMode, setViewMode] = useState<"grid" | "list">(() => {
    const saved = localStorage.getItem("fileManagerViewMode");
    return saved === "grid" || saved === "list" ? saved : "grid";
  });
  const [sortBy, setSortBy] = useState<"name" | "modified" | "size">(() => {
    const saved = localStorage.getItem("fileManagerSortBy");
    return saved === "name" || saved === "modified" || saved === "size"
      ? saved
      : "name";
  });
  const [sortOrder, setSortOrder] = useState<"asc" | "desc">(() => {
    const saved = localStorage.getItem("fileManagerSortOrder");
    return saved === "asc" || saved === "desc" ? saved : "asc";
  });
  const [totpRequired, setTotpRequired] = useState(false);
  const [totpSessionId, setTotpSessionId] = useState<string | null>(null);
  const [totpPrompt, setTotpPrompt] = useState<string>("");
  const [warpgateRequired, setWarpgateRequired] = useState(false);
  const [warpgateSessionId, setWarpgateSessionId] = useState<string | null>(
    null,
  );
  const [warpgateUrl, setWarpgateUrl] = useState<string>("");
  const [warpgateSecurityKey, setWarpgateSecurityKey] = useState<string>("");
  const [showAuthDialog, setShowAuthDialog] = useState(false);
  const [authDialogReason, setAuthDialogReason] = useState<
    "no_keyboard" | "auth_failed" | "timeout"
  >("no_keyboard");
  const [pinnedFiles, setPinnedFiles] = useState<Set<string>>(new Set());
  const [sidebarRefreshTrigger, setSidebarRefreshTrigger] = useState(0);
  const [isClosing, setIsClosing] = useState<boolean>(false);
  const [hasConnectionError, setHasConnectionError] = useState<boolean>(false);

  const [contextMenu, setContextMenu] = useState<{
    x: number;
    y: number;
    isVisible: boolean;
    files: FileItem[];
  }>({
    x: 0,
    y: 0,
    isVisible: false,
    files: [],
  });

  const [clipboard, setClipboard] = useState<{
    files: FileItem[];
    operation: "copy" | "cut";
  } | null>(null);

  interface UndoAction {
    type: "copy" | "cut" | "delete";
    description: string;
    data: {
      operation: "copy" | "cut";
      copiedFiles?: {
        originalPath: string;
        targetPath: string;
        targetName: string;
      }[];
      deletedFiles?: { path: string; name: string }[];
      targetDirectory?: string;
    };
    timestamp: number;
  }

  const [undoHistory, setUndoHistory] = useState<UndoAction[]>([]);

  const [createIntent, setCreateIntent] = useState<CreateIntent | null>(null);
  const [editingFile, setEditingFile] = useState<FileItem | null>(null);
  const [permissionsDialogFile, setPermissionsDialogFile] =
    useState<FileItem | null>(null);
  const [compressDialogFiles, setCompressDialogFiles] = useState<FileItem[]>(
    [],
  );

  const [sudoDialogOpen, setSudoDialogOpen] = useState(false);
  const [pendingSudoOperation, setPendingSudoOperation] = useState<
    | { type: "delete"; files: FileItem[] }
    | { type: "navigate"; path: string }
    | null
  >(null);

  const { selectedFiles, clearSelection, setSelection } = useFileSelection();

  const { dragHandlers } = useDragAndDrop({
    onFilesDropped: handleFilesDropped,
    onError: (error) => toast.error(error),
    maxFileSize: 5120,
  });

  const dragToDesktop = useDragToDesktop({
    sshSessionId: sshSessionId || "",
    sshHost: currentHost!,
  });

  const systemDrag = useDragToSystemDesktop({
    sshSessionId: sshSessionId || "",
    sshHost: currentHost!,
  });

  const startKeepalive = useCallback(() => {
    if (!sshSessionId) return;

    if (keepaliveTimerRef.current) {
      clearInterval(keepaliveTimerRef.current);
    }

    keepaliveTimerRef.current = setInterval(async () => {
      if (sshSessionId) {
        try {
          await keepSSHAlive(sshSessionId);
        } catch (error) {
          console.error("SSH keepalive failed:", error);
        }
      }
    }, 30 * 1000);
  }, [sshSessionId]);

  const stopKeepalive = useCallback(() => {
    if (keepaliveTimerRef.current) {
      clearInterval(keepaliveTimerRef.current);
      keepaliveTimerRef.current = null;
    }
  }, []);

  const handleCloseWithError = useCallback(
    (errorMessage: string) => {
      setHasConnectionError(true);
      addLog({
        type: "error",
        stage: "connection",
        message: errorMessage,
      });
    },
    [addLog],
  );

  useEffect(() => {
    if (currentHost) {
      initializeSSHConnection();
    }
  }, [currentHost]);

  useEffect(() => {
    if (sshSessionId) {
      startKeepalive();
    } else {
      stopKeepalive();
    }

    return () => {
      stopKeepalive();
    };
  }, [sshSessionId, startKeepalive, stopKeepalive]);

  const initialLoadDoneRef = useRef(false);
  const lastPathChangeRef = useRef<string>("");
  const pathChangeTimerRef = useRef<NodeJS.Timeout | null>(null);
  const currentLoadingPathRef = useRef<string>("");
  const keepaliveTimerRef = useRef<NodeJS.Timeout | null>(null);
  const activityLoggedRef = useRef(false);
  const activityLoggingRef = useRef(false);

  const logFileManagerActivity = useCallback(async () => {
    if (
      !currentHost?.id ||
      activityLoggedRef.current ||
      activityLoggingRef.current
    ) {
      return;
    }

    activityLoggingRef.current = true;
    activityLoggedRef.current = true;

    try {
      const hostName =
        currentHost.name || `${currentHost.username}@${currentHost.ip}`;
      await logActivity("file_manager", currentHost.id, hostName);
    } catch (err) {
      console.warn("Failed to log file manager activity:", err);
      activityLoggedRef.current = false;
    } finally {
      activityLoggingRef.current = false;
    }
  }, [currentHost]);

  const handleFileDragStart = useCallback(
    (files: FileItem[]) => {
      systemDrag.startDragToSystem(files, {
        enableToast: true,
        onSuccess: () => {
          clearSelection();
        },
        onError: (error) => {
          console.error("Drag failed:", error);
        },
      });
    },
    [systemDrag, clearSelection],
  );

  const handleFileDragEnd = useCallback(
    (e: DragEvent, draggedFiles: FileItem[]) => {
      const isOutside =
        e.clientX < 0 ||
        e.clientX > window.innerWidth ||
        e.clientY < 0 ||
        e.clientY > window.innerHeight;

      if (isOutside) {
        if (draggedFiles.length === 0) {
          console.error("No files to drag - this should not happen");
          return;
        }

        systemDrag.startDragToSystem(draggedFiles, {
          enableToast: true,
          onSuccess: () => {
            clearSelection();
          },
          onError: (error) => {
            console.error("Drag failed:", error);
          },
        });
        systemDrag.handleDragEnd(e);
      } else {
        systemDrag.cancelDragToSystem();
      }
    },
    [systemDrag, clearSelection],
  );

  const isConnectingRef = useRef(false);

  async function initializeSSHConnection() {
    if (!currentHost || isConnectingRef.current) return;

    isConnectingRef.current = true;

    try {
      setIsLoading(true);
      initialLoadDoneRef.current = false;
      setHasConnectionError(false);
      clearLogs();

      const sessionId = currentHost.id.toString();

      const result = await connectSSH(sessionId, {
        hostId: currentHost.id,
        ip: currentHost.ip,
        port: currentHost.port,
        username: currentHost.username,
        password: currentHost.password,
        sshKey: currentHost.key,
        keyPassword: currentHost.keyPassword,
        authType: currentHost.authType,
        credentialId: currentHost.credentialId,
        userId: currentHost.userId,
        forceKeyboardInteractive: currentHost.forceKeyboardInteractive,
        jumpHosts: currentHost.jumpHosts,
        useSocks5: currentHost.useSocks5,
        socks5Host: currentHost.socks5Host,
        socks5Port: currentHost.socks5Port,
        socks5Username: currentHost.socks5Username,
        socks5Password: currentHost.socks5Password,
        socks5ProxyChain: currentHost.socks5ProxyChain,
      });

      if (result?.requires_warpgate) {
        setWarpgateRequired(true);
        setWarpgateSessionId(sessionId);
        setWarpgateUrl(result.url || "");
        setWarpgateSecurityKey(result.securityKey || "N/A");
        setIsLoading(false);
        return;
      }

      if (result?.requires_totp) {
        setTotpRequired(true);
        setTotpSessionId(sessionId);
        setTotpPrompt(result.prompt || t("fileManager.verificationCodePrompt"));
        setIsLoading(false);
        return;
      }

      if (result?.status === "auth_required") {
        setAuthDialogReason(result.reason || "no_keyboard");
        setShowAuthDialog(true);
        setIsLoading(false);
        return;
      }

      setSshSessionId(sessionId);

      try {
        const response = await listSSHFiles(sessionId, currentPath);
        const files = Array.isArray(response)
          ? response
          : response?.files || [];
        setFiles(files);
        clearSelection();
        initialLoadDoneRef.current = true;

        if (!result?.requires_totp) {
          logFileManagerActivity();
        }
      } catch (dirError: unknown) {
        console.error("Failed to load initial directory:", dirError);
      }
    } catch (error: any) {
      console.error("SSH connection failed:", error);

      if (error?.connectionLogs) {
        error.connectionLogs.forEach((log: any) => {
          addLog({
            type: log.type,
            stage: log.stage,
            message: log.message,
            details: log.details,
          });
        });
        if (error.requires_totp) {
          setTotpRequired(true);
          setTotpSessionId(error.sessionId || currentHost.id.toString());
          setTotpPrompt(
            error.prompt || t("fileManager.verificationCodePrompt"),
          );
          setIsLoading(false);
          return;
        }
        if (error.requires_warpgate) {
          setWarpgateRequired(true);
          setWarpgateSessionId(error.sessionId || currentHost.id.toString());
          setWarpgateUrl(error.url || "");
          setWarpgateSecurityKey(error.securityKey || "N/A");
          setIsLoading(false);
          return;
        }
        if (error.status === "auth_required") {
          setAuthDialogReason(error.reason || "no_keyboard");
          setShowAuthDialog(true);
          setIsLoading(false);
          return;
        }
      } else {
        addLog({
          type: "error",
          stage: "connection",
          message: error?.message || t("fileManager.failedToConnect"),
        });
      }

      handleCloseWithError(
        t("fileManager.failedToConnect") + ": " + (error.message || error),
      );
    } finally {
      setIsLoading(false);
      isConnectingRef.current = false;
    }
  }

  const loadDirectory = useCallback(
    async (path: string): Promise<boolean> => {
      if (!sshSessionId) {
        console.error("Cannot load directory: no SSH session ID");
        return false;
      }

      if (isLoading && currentLoadingPathRef.current !== path) {
        return false;
      }

      let resolvedPath = path;
      if (path.includes("$") || path.startsWith("~")) {
        resolvedPath = await resolveSSHPath(sshSessionId, path);
        if (resolvedPath !== path) {
          setCurrentPath(resolvedPath);
          lastPathChangeRef.current = resolvedPath;
        }
      }

      currentLoadingPathRef.current = resolvedPath;
      setIsLoading(true);

      setCreateIntent(null);

      try {
        const response = await listSSHFiles(sshSessionId, resolvedPath);

        if (currentLoadingPathRef.current !== resolvedPath) {
          return false;
        }

        const files = Array.isArray(response)
          ? response
          : response?.files || [];

        setFiles(files);
        clearSelection();
        return true;
      } catch (error: unknown) {
        if (currentLoadingPathRef.current === resolvedPath) {
          const axiosError = error as {
            response?: {
              status?: number;
              data?: {
                needsSudo?: boolean;
                error?: string;
                sudoFailed?: boolean;
              };
            };
            message?: string;
          };

          if (axiosError.response?.data?.needsSudo) {
            if (!sudoDialogOpen) {
              setPendingSudoOperation({ type: "navigate", path: resolvedPath });
              setSudoDialogOpen(true);
            }

            if (axiosError.response.data.sudoFailed) {
              toast.error(t("fileManager.sudoAuthFailed"));
            } else {
              toast.error(t("fileManager.permissionDenied"));
            }
            return false;
          }

          console.error("Failed to load directory:", error);

          const errorMessage =
            axiosError.response?.data?.error ||
            axiosError.message ||
            String(error);

          if (initialLoadDoneRef.current) {
            toast.error(
              t("fileManager.failedToLoadDirectory") + ": " + errorMessage,
            );
          }

          if (
            errorMessage?.includes("connection") ||
            errorMessage?.includes("SSH")
          ) {
            handleCloseWithError(
              t("fileManager.failedToLoadDirectory") + ": " + errorMessage,
            );
          }
        }
        return false;
      } finally {
        if (currentLoadingPathRef.current === resolvedPath) {
          setIsLoading(false);
          currentLoadingPathRef.current = "";
        }
      }
    },
    [sshSessionId, isLoading, clearSelection, t, sudoDialogOpen],
  );

  const debouncedLoadDirectory = useCallback(
    (path: string, force?: boolean) => {
      if (pathChangeTimerRef.current) {
        clearTimeout(pathChangeTimerRef.current);
      }

      pathChangeTimerRef.current = setTimeout(() => {
        if ((force || path !== lastPathChangeRef.current) && sshSessionId) {
          lastPathChangeRef.current = path;
          loadDirectory(path);
        }
      }, 150);
    },
    [sshSessionId, loadDirectory],
  );

  useEffect(() => {
    if (sshSessionId && currentPath) {
      if (!initialLoadDoneRef.current) {
        initialLoadDoneRef.current = true;
        lastPathChangeRef.current = currentPath;
        return;
      }

      debouncedLoadDirectory(currentPath);
    }

    return () => {
      if (pathChangeTimerRef.current) {
        clearTimeout(pathChangeTimerRef.current);
      }
    };
  }, [sshSessionId, currentPath, debouncedLoadDirectory]);

  const handleRefreshDirectory = useCallback(() => {
    const now = Date.now();
    const DEBOUNCE_MS = 500;

    if (now - lastRefreshTime < DEBOUNCE_MS) {
      return;
    }

    setLastRefreshTime(now);
    // Force reset loading state to ensure refresh is not blocked
    setIsLoading(false);
    currentLoadingPathRef.current = "";
    loadDirectory(currentPath);
  }, [currentPath, lastRefreshTime, loadDirectory]);

  useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      const activeElement = document.activeElement;
      if (
        activeElement &&
        (activeElement.tagName === "INPUT" ||
          activeElement.tagName === "TEXTAREA" ||
          activeElement.contentEditable === "true")
      ) {
        return;
      }

      if (event.key === "T" && event.ctrlKey && event.shiftKey) {
        event.preventDefault();
        handleOpenTerminal(currentPath);
      }
    };

    document.addEventListener("keydown", handleKeyDown);
    return () => document.removeEventListener("keydown", handleKeyDown);
  }, [currentPath]);

  function handleFilesDropped(fileList: FileList) {
    if (!sshSessionId) {
      toast.error(t("fileManager.noSSHConnection"));
      return;
    }

    Array.from(fileList).forEach((file) => {
      handleUploadFile(file);
    });
  }

  async function handleUploadFile(file: File) {
    if (!sshSessionId) return;

    const progressToast = toast.loading(
      t("fileManager.uploadingFile", {
        name: file.name,
        size: formatFileSize(file.size),
      }),
      { duration: Infinity },
    );

    try {
      await ensureSSHConnection();

      const fileContent = await new Promise<string>((resolve, reject) => {
        const reader = new FileReader();
        reader.onerror = () => reject(reader.error);

        reader.onload = () => {
          if (reader.result instanceof ArrayBuffer) {
            const bytes = new Uint8Array(reader.result);
            let binary = "";
            for (let i = 0; i < bytes.byteLength; i++) {
              binary += String.fromCharCode(bytes[i]);
            }
            const base64 = btoa(binary);
            resolve(base64);
          } else {
            reject(new Error("Failed to read file"));
          }
        };
        reader.readAsArrayBuffer(file);
      });

      await uploadSSHFile(
        sshSessionId,
        currentPath,
        file.name,
        fileContent,
        currentHost?.id,
        undefined,
      );

      toast.dismiss(progressToast);

      toast.success(
        t("fileManager.fileUploadedSuccessfully", { name: file.name }),
      );
      handleRefreshDirectory();
    } catch (error: unknown) {
      toast.dismiss(progressToast);

      if (
        error.message?.includes("connection") ||
        error.message?.includes("established")
      ) {
        toast.error(
          t("fileManager.sshConnectionFailed", {
            name: currentHost?.name,
            ip: currentHost?.ip,
            port: currentHost?.port,
          }),
        );
      } else {
        toast.error(t("fileManager.failedToUploadFile"));
      }
      console.error("Upload failed:", error);
    }
  }

  async function handleDownloadFile(file: FileItem) {
    if (!sshSessionId) return;

    try {
      await ensureSSHConnection();

      const response = await downloadSSHFile(sshSessionId, file.path);

      if (response?.content) {
        const byteCharacters = atob(response.content);
        const byteNumbers = new Array(byteCharacters.length);
        for (let i = 0; i < byteCharacters.length; i++) {
          byteNumbers[i] = byteCharacters.charCodeAt(i);
        }
        const byteArray = new Uint8Array(byteNumbers);
        const blob = new Blob([byteArray], {
          type: response.mimeType || "application/octet-stream",
        });

        const url = URL.createObjectURL(blob);
        const link = document.createElement("a");
        link.href = url;
        link.download = response.fileName || file.name;
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
        URL.revokeObjectURL(url);

        toast.success(
          t("fileManager.fileDownloadedSuccessfully", { name: file.name }),
        );
      } else {
        toast.error(t("fileManager.failedToDownloadFile"));
      }
    } catch (error: unknown) {
      if (
        error.message?.includes("connection") ||
        error.message?.includes("established")
      ) {
        toast.error(
          t("fileManager.sshConnectionFailed", {
            name: currentHost?.name,
            ip: currentHost?.ip,
            port: currentHost?.port,
          }),
        );
      } else {
        toast.error(t("fileManager.failedToDownloadFile"));
      }
      console.error("Download failed:", error);
    }
  }

  async function handleDeleteFiles(files: FileItem[]) {
    if (!sshSessionId || files.length === 0) return;

    let confirmMessage: string;
    if (files.length === 1) {
      const file = files[0];
      if (file.type === "directory") {
        confirmMessage = t("fileManager.confirmDeleteFolder", {
          name: file.name,
        });
      } else {
        confirmMessage = t("fileManager.confirmDeleteSingleItem", {
          name: file.name,
        });
      }
    } else {
      const hasDirectory = files.some((file) => file.type === "directory");
      const translationKey = hasDirectory
        ? "fileManager.confirmDeleteMultipleItemsWithFolders"
        : "fileManager.confirmDeleteMultipleItems";

      confirmMessage = t(translationKey, {
        count: files.length,
      });
    }

    const fullMessage = `${confirmMessage}\n\n${t("fileManager.permanentDeleteWarning")}`;

    confirmWithToast(
      fullMessage,
      async () => {
        try {
          await ensureSSHConnection();

          for (const file of files) {
            await deleteSSHItem(
              sshSessionId,
              file.path,
              file.type === "directory",
              currentHost?.id,
              currentHost?.userId?.toString(),
            );
          }

          const deletedFiles = files.map((file) => ({
            path: file.path,
            name: file.name,
          }));

          const undoAction: UndoAction = {
            type: "delete",
            description: t("fileManager.deletedItems", { count: files.length }),
            data: {
              operation: "cut",
              deletedFiles,
              targetDirectory: currentPath,
            },
            timestamp: Date.now(),
          };
          setUndoHistory((prev) => [...prev.slice(-9), undoAction]);

          toast.success(
            t("fileManager.itemsDeletedSuccessfully", { count: files.length }),
          );
          handleRefreshDirectory();
          clearSelection();
        } catch (error: unknown) {
          const axiosError = error as {
            response?: { data?: { needsSudo?: boolean; error?: string } };
            message?: string;
          };
          if (axiosError.response?.data?.needsSudo) {
            setPendingSudoOperation({ type: "delete", files });
            setSudoDialogOpen(true);
            return;
          }
          if (
            axiosError.message?.includes("connection") ||
            axiosError.message?.includes("established")
          ) {
            toast.error(
              `SSH connection failed. Please check your connection to ${currentHost?.name} (${currentHost?.ip}:${currentHost?.port})`,
            );
          } else {
            toast.error(t("fileManager.failedToDeleteItems"));
          }
          console.error("Delete failed:", error);
        }
      },
      "destructive",
    );
  }

  async function handleSudoPasswordSubmit(password: string) {
    if (!sshSessionId || !pendingSudoOperation) return;

    try {
      await setSudoPassword(sshSessionId, password);
      setSudoDialogOpen(false);

      if (pendingSudoOperation.type === "delete") {
        for (const file of pendingSudoOperation.files) {
          await deleteSSHItem(
            sshSessionId,
            file.path,
            file.type === "directory",
            currentHost?.id,
            currentHost?.userId?.toString(),
          );
        }
        toast.success(
          t("fileManager.itemsDeletedSuccessfully", {
            count: pendingSudoOperation.files.length,
          }),
        );
        handleRefreshDirectory();
        clearSelection();
      } else if (pendingSudoOperation.type === "navigate") {
        const success = await loadDirectory(pendingSudoOperation.path);
        if (success) {
          setCurrentPath(pendingSudoOperation.path);
          setPendingSudoOperation(null);
        }
        return;
      }

      setPendingSudoOperation(null);
    } catch (error: unknown) {
      const axiosError = error as {
        response?: { data?: { needsSudo?: boolean; sudoFailed?: boolean } };
        message?: string;
      };

      if (axiosError.response?.data?.sudoFailed) {
        toast.error(t("fileManager.sudoAuthFailed"));
        setSudoDialogOpen(true);
        return;
      }

      toast.error(axiosError.message || t("fileManager.sudoOperationFailed"));
      setPendingSudoOperation(null);
    }
  }

  function handleCreateNewFolder() {
    const defaultName = generateUniqueName(
      t("fileManager.newFolderDefault"),
      "directory",
    );
    const newCreateIntent = {
      id: Date.now().toString(),
      type: "directory" as const,
      defaultName,
      currentName: defaultName,
    };

    setCreateIntent(newCreateIntent);
  }

  function handleCreateNewFile() {
    const defaultName = generateUniqueName(
      t("fileManager.newFileDefault"),
      "file",
    );
    const newCreateIntent = {
      id: Date.now().toString(),
      type: "file" as const,
      defaultName,
      currentName: defaultName,
    };
    setCreateIntent(newCreateIntent);
  }

  const handleSymlinkClick = async (file: FileItem) => {
    if (!currentHost || !sshSessionId) {
      toast.error(t("fileManager.noSSHConnection"));
      return;
    }

    try {
      const currentSessionId = sshSessionId;
      const status = await getSSHStatus(currentSessionId);
      if (!status.connected) {
        const result = await connectSSH(currentSessionId, {
          hostId: currentHost.id,
          ip: currentHost.ip,
          port: currentHost.port,
          username: currentHost.username,
          authType: currentHost.authType,
          password: currentHost.password,
          sshKey: currentHost.key,
          keyPassword: currentHost.keyPassword,
          credentialId: currentHost.credentialId,
          jumpHosts: currentHost.jumpHosts,
          useSocks5: currentHost.useSocks5,
          socks5Host: currentHost.socks5Host,
          socks5Port: currentHost.socks5Port,
          socks5Username: currentHost.socks5Username,
          socks5Password: currentHost.socks5Password,
          socks5ProxyChain: currentHost.socks5ProxyChain,
        });

        if (!result.success) {
          throw new Error(t("fileManager.failedToReconnectSSH"));
        }
      }

      const symlinkInfo = await identifySSHSymlink(currentSessionId, file.path);

      if (symlinkInfo.type === "directory") {
        setCurrentPath(symlinkInfo.target);
      } else if (symlinkInfo.type === "file") {
        const windowCount = Date.now() % 10;
        const offsetX = 120 + windowCount * 30;
        const offsetY = 120 + windowCount * 30;

        const targetFile: FileItem = {
          ...file,
          path: symlinkInfo.target,
        };

        const createWindowComponent = (windowId: string) => (
          <FileWindow
            windowId={windowId}
            file={targetFile}
            sshSessionId={currentSessionId}
            sshHost={currentHost}
            initialX={offsetX}
            initialY={offsetY}
          />
        );

        openWindow({
          title: file.name,
          x: offsetX,
          y: offsetY,
          width: 800,
          height: 600,
          isMaximized: false,
          isMinimized: false,
          component: createWindowComponent,
        });
      }
    } catch (error: unknown) {
      toast.error(
        error?.response?.data?.error ||
          error?.message ||
          t("fileManager.failedToResolveSymlink"),
      );
    }
  };

  async function handleFileOpen(file: FileItem) {
    if (file.type === "directory") {
      setCurrentPath(file.path);
    } else if (file.type === "link") {
      await handleSymlinkClick(file);
    } else {
      if (!sshSessionId) {
        toast.error(t("fileManager.noSSHConnection"));
        return;
      }

      await recordRecentFile(file);

      const windowCount = Date.now() % 10;
      const baseOffsetX = 120 + windowCount * 30;
      const baseOffsetY = 120 + windowCount * 30;

      const maxOffsetX = Math.max(0, window.innerWidth - 800 - 100);
      const maxOffsetY = Math.max(0, window.innerHeight - 600 - 100);

      const offsetX = Math.min(baseOffsetX, maxOffsetX);
      const offsetY = Math.min(baseOffsetY, maxOffsetY);

      const windowTitle = file.name;

      const createWindowComponent = (windowId: string) => (
        <FileWindow
          windowId={windowId}
          file={file}
          sshSessionId={sshSessionId}
          sshHost={currentHost}
          initialX={offsetX}
          initialY={offsetY}
          onFileNotFound={handleFileNotFound}
        />
      );

      openWindow({
        title: windowTitle,
        x: offsetX,
        y: offsetY,
        width: 800,
        height: 600,
        isMaximized: false,
        isMinimized: false,
        component: createWindowComponent,
      });
    }
  }

  function handleContextMenu(event: React.MouseEvent, file?: FileItem) {
    event.preventDefault();

    let files: FileItem[];
    if (file) {
      const isFileSelected = selectedFiles.some((f) => f.path === file.path);
      files = isFileSelected ? selectedFiles : [file];
    } else {
      files = selectedFiles;
    }

    setContextMenu({
      x: event.clientX,
      y: event.clientY,
      isVisible: true,
      files,
    });
  }

  function handleCopyFiles(files: FileItem[]) {
    setClipboard({ files, operation: "copy" });
    toast.success(
      t("fileManager.filesCopiedToClipboard", { count: files.length }),
    );
  }

  function handleCutFiles(files: FileItem[]) {
    setClipboard({ files, operation: "cut" });
    toast.success(
      t("fileManager.filesCutToClipboard", { count: files.length }),
    );
  }

  function handleCopyPath(files: FileItem[]) {
    if (files.length === 0) return;

    const paths = files.map((file) => file.path).join("\n");

    navigator.clipboard.writeText(paths).then(
      () => {
        toast.success(
          files.length === 1
            ? t("fileManager.pathCopiedToClipboard")
            : t("fileManager.pathsCopiedToClipboard", { count: files.length }),
        );
      },
      (err) => {
        console.error("Failed to copy path to clipboard:", err);
        toast.error(t("fileManager.failedToCopyPath"));
      },
    );
  }

  async function handlePasteFiles() {
    if (!clipboard || !sshSessionId) return;

    try {
      await ensureSSHConnection();

      const { files, operation } = clipboard;

      let successCount = 0;
      const copiedItems: string[] = [];

      for (const file of files) {
        try {
          if (operation === "copy") {
            const result = await copySSHItem(
              sshSessionId,
              file.path,
              currentPath,
              currentHost?.id,
              currentHost?.userId?.toString(),
            );
            copiedItems.push(result.uniqueName || file.name);
            successCount++;
          } else {
            const targetPath = currentPath.endsWith("/")
              ? `${currentPath}${file.name}`
              : `${currentPath}/${file.name}`;

            if (file.path !== targetPath) {
              await moveSSHItem(
                sshSessionId,
                file.path,
                targetPath,
                currentHost?.id,
                currentHost?.userId?.toString(),
              );
              successCount++;
            }
          }
        } catch (error: unknown) {
          console.error(`Failed to ${operation} file ${file.name}:`, error);
          toast.error(
            t("fileManager.operationFailed", {
              operation:
                operation === "copy"
                  ? t("fileManager.copy")
                  : t("fileManager.move"),
              name: file.name,
              error: error.message,
            }),
          );
        }
      }

      if (successCount > 0) {
        if (operation === "copy") {
          const copiedFiles = files
            .slice(0, successCount)
            .map((file, index) => ({
              originalPath: file.path,
              targetPath: `${currentPath}/${copiedItems[index] || file.name}`,
              targetName: copiedItems[index] || file.name,
            }));

          const undoAction: UndoAction = {
            type: "copy",
            description: t("fileManager.copiedItems", { count: successCount }),
            data: {
              operation: "copy",
              copiedFiles,
              targetDirectory: currentPath,
            },
            timestamp: Date.now(),
          };
          setUndoHistory((prev) => [...prev.slice(-9), undoAction]);
        } else if (operation === "cut") {
          const movedFiles = files.slice(0, successCount).map((file) => {
            const targetPath = currentPath.endsWith("/")
              ? `${currentPath}${file.name}`
              : `${currentPath}/${file.name}`;
            return {
              originalPath: file.path,
              targetPath: targetPath,
              targetName: file.name,
            };
          });

          const undoAction: UndoAction = {
            type: "cut",
            description: t("fileManager.movedItems", { count: successCount }),
            data: {
              operation: "cut",
              copiedFiles: movedFiles,
              targetDirectory: currentPath,
            },
            timestamp: Date.now(),
          };
          setUndoHistory((prev) => [...prev.slice(-9), undoAction]);
        }
      }

      if (successCount > 0) {
        const operationText =
          operation === "copy" ? t("fileManager.copy") : t("fileManager.move");
        if (operation === "copy" && copiedItems.length > 0) {
          const hasRenamed = copiedItems.some(
            (name) => !files.some((file) => file.name === name),
          );

          if (hasRenamed) {
            toast.success(
              t("fileManager.operationCompletedSuccessfully", {
                operation: operationText,
                count: successCount,
              }),
            );
          } else {
            toast.success(
              t("fileManager.operationCompleted", {
                operation: operationText,
                count: successCount,
              }),
            );
          }
        } else {
          toast.success(
            t("fileManager.operationCompleted", {
              operation: operationText,
              count: successCount,
            }),
          );
        }
      }

      handleRefreshDirectory();
      clearSelection();

      if (operation === "cut") {
        setClipboard(null);
      }
    } catch (error: unknown) {
      toast.error(
        `${t("fileManager.pasteFailed")}: ${error.message || t("fileManager.unknownError")}`,
      );
    }
  }

  async function handleExtractArchive(file: FileItem) {
    if (!sshSessionId) return;

    try {
      await ensureSSHConnection();

      toast.info(t("fileManager.extractingArchive", { name: file.name }));

      await extractSSHArchive(
        sshSessionId,
        file.path,
        undefined,
        currentHost?.id,
        currentHost?.userId?.toString(),
      );

      toast.success(
        t("fileManager.archiveExtractedSuccessfully", { name: file.name }),
      );

      handleRefreshDirectory();
    } catch (error: unknown) {
      const err = error as { message?: string };
      toast.error(
        `${t("fileManager.extractFailed")}: ${err.message || t("fileManager.unknownError")}`,
      );
    }
  }

  function handleOpenCompressDialog(files: FileItem[]) {
    setCompressDialogFiles(files);
  }

  async function handleCompress(archiveName: string, format: string) {
    if (!sshSessionId || compressDialogFiles.length === 0) return;

    try {
      await ensureSSHConnection();

      const paths = compressDialogFiles.map((f) => f.path);
      const fileNames = compressDialogFiles.map((f) => f.name);

      toast.info(
        t("fileManager.compressingFiles", {
          count: fileNames.length,
          name: archiveName,
        }),
      );

      await compressSSHFiles(
        sshSessionId,
        paths,
        archiveName,
        format,
        currentHost?.id,
        currentHost?.userId?.toString(),
      );

      toast.success(
        t("fileManager.filesCompressedSuccessfully", {
          name: archiveName,
        }),
      );

      handleRefreshDirectory();
      clearSelection();
    } catch (error: unknown) {
      const err = error as { message?: string };
      toast.error(
        `${t("fileManager.compressFailed")}: ${err.message || t("fileManager.unknownError")}`,
      );
    }
  }

  async function handleUndo() {
    if (undoHistory.length === 0) {
      toast.info(t("fileManager.noUndoableActions"));
      return;
    }

    const lastAction = undoHistory[undoHistory.length - 1];

    try {
      await ensureSSHConnection();

      switch (lastAction.type) {
        case "copy":
          if (lastAction.data.copiedFiles) {
            let successCount = 0;
            for (const copiedFile of lastAction.data.copiedFiles) {
              try {
                const isDirectory =
                  files.find((f) => f.path === copiedFile.targetPath)?.type ===
                  "directory";
                await deleteSSHItem(
                  sshSessionId!,
                  copiedFile.targetPath,
                  isDirectory,
                  currentHost?.id,
                  currentHost?.userId?.toString(),
                );
                successCount++;
              } catch (error: unknown) {
                console.error(
                  `Failed to delete copied file ${copiedFile.targetName}:`,
                  error,
                );
                toast.error(
                  t("fileManager.deleteCopiedFileFailed", {
                    name: copiedFile.targetName,
                    error: error.message,
                  }),
                );
              }
            }

            if (successCount > 0) {
              setUndoHistory((prev) => prev.slice(0, -1));
              toast.success(
                t("fileManager.undoCopySuccess", { count: successCount }),
              );
            } else {
              toast.error(t("fileManager.undoCopyFailedDelete"));
              return;
            }
          } else {
            toast.error(t("fileManager.undoCopyFailedNoInfo"));
            return;
          }
          break;

        case "cut":
          if (lastAction.data.copiedFiles) {
            let successCount = 0;
            for (const movedFile of lastAction.data.copiedFiles) {
              try {
                await moveSSHItem(
                  sshSessionId!,
                  movedFile.targetPath,
                  movedFile.originalPath,
                  currentHost?.id,
                  currentHost?.userId?.toString(),
                );
                successCount++;
              } catch (error: unknown) {
                console.error(
                  `Failed to move back file ${movedFile.targetName}:`,
                  error,
                );
                toast.error(
                  t("fileManager.moveBackFileFailed", {
                    name: movedFile.targetName,
                    error: error.message,
                  }),
                );
              }
            }

            if (successCount > 0) {
              setUndoHistory((prev) => prev.slice(0, -1));
              toast.success(
                t("fileManager.undoMoveSuccess", { count: successCount }),
              );
            } else {
              toast.error(t("fileManager.undoMoveFailedMove"));
              return;
            }
          } else {
            toast.error(t("fileManager.undoMoveFailedNoInfo"));
            return;
          }
          break;

        case "delete":
          toast.info(t("fileManager.undoDeleteNotSupported"));
          setUndoHistory((prev) => prev.slice(0, -1));
          return;

        default:
          toast.error(t("fileManager.undoTypeNotSupported"));
          return;
      }

      handleRefreshDirectory();
    } catch (error: unknown) {
      toast.error(
        `${t("fileManager.undoOperationFailed")}: ${error.message || t("fileManager.unknownError")}`,
      );
      console.error("Undo failed:", error);
    }
  }

  function handleRenameFile(file: FileItem) {
    setEditingFile(file);
  }

  function handleOpenPermissionsDialog(file: FileItem) {
    setPermissionsDialogFile(file);
  }

  async function handleSavePermissions(file: FileItem, permissions: string) {
    if (!sshSessionId) {
      toast.error(t("fileManager.noSSHConnection"));
      return;
    }

    try {
      await changeSSHPermissions(
        sshSessionId,
        file.path,
        permissions,
        currentHost?.id,
        currentHost?.userId?.toString(),
      );

      toast.success(t("fileManager.permissionsChangedSuccessfully"));
      await handleRefreshDirectory();
    } catch (error: unknown) {
      console.error("Failed to change permissions:", error);
      toast.error(t("fileManager.failedToChangePermissions"));
      throw error;
    }
  }

  async function ensureSSHConnection() {
    if (!sshSessionId || !currentHost || isReconnecting) return;

    try {
      const status = await getSSHStatus(sshSessionId);

      if (!status.connected && !isReconnecting) {
        setIsReconnecting(true);
        await connectSSH(sshSessionId, {
          hostId: currentHost.id,
          ip: currentHost.ip,
          port: currentHost.port,
          username: currentHost.username,
          password: currentHost.password,
          sshKey: currentHost.key,
          keyPassword: currentHost.keyPassword,
          authType: currentHost.authType,
          credentialId: currentHost.credentialId,
          userId: currentHost.userId,
          jumpHosts: currentHost.jumpHosts,
          useSocks5: currentHost.useSocks5,
          socks5Host: currentHost.socks5Host,
          socks5Port: currentHost.socks5Port,
          socks5Username: currentHost.socks5Username,
          socks5Password: currentHost.socks5Password,
          socks5ProxyChain: currentHost.socks5ProxyChain,
        });
      }
    } catch (error) {
      handleCloseWithError(
        `SSH connection failed. Please check your connection to ${currentHost?.name} (${currentHost?.ip}:${currentHost?.port})`,
      );
      throw error;
    } finally {
      setIsReconnecting(false);
    }
  }

  async function handleConfirmCreate(name: string) {
    if (!createIntent || !sshSessionId) return;

    try {
      await ensureSSHConnection();

      if (createIntent.type === "file") {
        await createSSHFile(
          sshSessionId,
          currentPath,
          name,
          "",
          currentHost?.id,
          currentHost?.userId?.toString(),
        );
        toast.success(t("fileManager.fileCreatedSuccessfully", { name }));
      } else {
        await createSSHFolder(
          sshSessionId,
          currentPath,
          name,
          currentHost?.id,
          currentHost?.userId?.toString(),
        );
        toast.success(t("fileManager.folderCreatedSuccessfully", { name }));
      }

      setCreateIntent(null);
      handleRefreshDirectory();
    } catch (error: unknown) {
      console.error("Create failed:", error);
      toast.error(t("fileManager.failedToCreateItem"));
    }
  }

  function handleCancelCreate() {
    setCreateIntent(null);
  }

  async function handleRenameConfirm(file: FileItem, newName: string) {
    if (!sshSessionId) return;

    try {
      await ensureSSHConnection();

      await renameSSHItem(
        sshSessionId,
        file.path,
        newName,
        currentHost?.id,
        currentHost?.userId?.toString(),
      );

      toast.success(
        t("fileManager.itemRenamedSuccessfully", { name: newName }),
      );
      setEditingFile(null);
      handleRefreshDirectory();
    } catch (error: unknown) {
      console.error("Rename failed:", error);
      toast.error(t("fileManager.failedToRenameItem"));
    }
  }

  function handleStartEdit(file: FileItem) {
    setEditingFile(file);
  }

  function handleCancelEdit() {
    setEditingFile(null);
  }

  async function handleTotpSubmit(code: string) {
    if (!totpSessionId || !code) return;

    try {
      setIsLoading(true);
      const result = await verifySSHTOTP(totpSessionId, code);

      if (result?.status === "success") {
        setTotpRequired(false);
        setTotpPrompt("");
        setSshSessionId(totpSessionId);
        setTotpSessionId(null);

        try {
          const response = await listSSHFiles(totpSessionId, currentPath);
          const files = Array.isArray(response)
            ? response
            : response?.files || [];
          setFiles(files);
          clearSelection();
          initialLoadDoneRef.current = true;
          toast.success(t("fileManager.connectedSuccessfully"));

          logFileManagerActivity();
        } catch (dirError: unknown) {
          console.error("Failed to load initial directory:", dirError);
        }
      }
    } catch (error: unknown) {
      console.error("TOTP verification failed:", error);
      toast.error(t("fileManager.totpVerificationFailed"));
    } finally {
      setIsLoading(false);
    }
  }

  function handleTotpCancel() {
    setTotpRequired(false);
    setTotpPrompt("");
    setTotpSessionId(null);
    if (onClose) onClose();
  }

  async function handleWarpgateContinue() {
    if (!warpgateSessionId) return;

    try {
      setIsLoading(true);
      const result = await verifySSHWarpgate(warpgateSessionId);

      if (result?.status === "success") {
        setWarpgateRequired(false);
        setWarpgateUrl("");
        setWarpgateSecurityKey("");
        setSshSessionId(warpgateSessionId);
        setWarpgateSessionId(null);

        try {
          const response = await listSSHFiles(warpgateSessionId, currentPath);
          const files = Array.isArray(response)
            ? response
            : response?.files || [];
          setFiles(files);
          clearSelection();
          initialLoadDoneRef.current = true;
          toast.success(t("fileManager.connectedSuccessfully"));

          logFileManagerActivity();
        } catch (dirError: unknown) {
          console.error("Failed to load initial directory:", dirError);
        }
      }
    } catch (error: unknown) {
      console.error("Warpgate verification failed:", error);
      toast.error(t("fileManager.warpgateVerificationFailed"));
    } finally {
      setIsLoading(false);
    }
  }

  function handleWarpgateCancel() {
    setWarpgateRequired(false);
    setWarpgateUrl("");
    setWarpgateSecurityKey("");
    setWarpgateSessionId(null);
    if (onClose) onClose();
  }

  function handleWarpgateOpenUrl() {
    if (warpgateUrl) {
      window.open(warpgateUrl, "_blank", "noopener,noreferrer");
    }
  }

  async function handleAuthDialogSubmit(credentials: {
    password?: string;
    sshKey?: string;
    keyPassword?: string;
  }) {
    if (!currentHost) return;

    try {
      setIsLoading(true);
      setShowAuthDialog(false);

      const sessionId = currentHost.id.toString();

      const result = await connectSSH(sessionId, {
        hostId: currentHost.id,
        ip: currentHost.ip,
        port: currentHost.port,
        username: currentHost.username,
        password: credentials.password,
        sshKey: credentials.sshKey,
        keyPassword: credentials.keyPassword,
        authType: credentials.password ? "password" : "key",
        credentialId: currentHost.credentialId,
        userId: currentHost.userId,
        jumpHosts: currentHost.jumpHosts,
        useSocks5: currentHost.useSocks5,
        socks5Host: currentHost.socks5Host,
        socks5Port: currentHost.socks5Port,
        socks5Username: currentHost.socks5Username,
        socks5Password: currentHost.socks5Password,
        socks5ProxyChain: currentHost.socks5ProxyChain,
      });

      if (result?.requires_warpgate) {
        setWarpgateRequired(true);
        setWarpgateSessionId(sessionId);
        setWarpgateUrl(result.url || "");
        setWarpgateSecurityKey(result.securityKey || "N/A");
        setIsLoading(false);
        return;
      }

      if (result?.requires_totp) {
        setTotpRequired(true);
        setTotpSessionId(sessionId);
        setTotpPrompt(result.prompt || t("fileManager.verificationCodePrompt"));
        setIsLoading(false);
        return;
      }

      if (result?.status === "auth_required") {
        setAuthDialogReason(result.reason || "auth_failed");
        setShowAuthDialog(true);
        setIsLoading(false);
        toast.error(t("fileManager.authenticationFailed"));
        return;
      }

      setSshSessionId(sessionId);

      try {
        const response = await listSSHFiles(sessionId, currentPath);
        const files = Array.isArray(response)
          ? response
          : response?.files || [];
        setFiles(files);
        clearSelection();
        initialLoadDoneRef.current = true;
        toast.success(t("fileManager.connectedSuccessfully"));
        logFileManagerActivity();
      } catch (dirError: unknown) {
        console.error("Failed to load initial directory:", dirError);
      }
    } catch (error: unknown) {
      console.error("SSH connection with credentials failed:", error);
      setAuthDialogReason("auth_failed");
      setShowAuthDialog(true);
      toast.error(
        t("fileManager.failedToConnect") + ": " + (error.message || error),
      );
    } finally {
      setIsLoading(false);
    }
  }

  function handleAuthDialogCancel() {
    setShowAuthDialog(false);
    if (onClose) onClose();
  }

  function generateUniqueName(
    baseName: string,
    type: "file" | "directory",
  ): string {
    const existingNames = files.map((f) => f.name.toLowerCase());
    let candidateName = baseName;
    let counter = 1;

    while (existingNames.includes(candidateName.toLowerCase())) {
      if (type === "file" && baseName.includes(".")) {
        const lastDotIndex = baseName.lastIndexOf(".");
        const nameWithoutExt = baseName.substring(0, lastDotIndex);
        const extension = baseName.substring(lastDotIndex);
        candidateName = `${nameWithoutExt}${counter}${extension}`;
      } else {
        candidateName = `${baseName}${counter}`;
      }
      counter++;
    }

    return candidateName;
  }

  async function handleFileDrop(
    draggedFiles: FileItem[],
    targetFolder: FileItem,
  ) {
    if (!sshSessionId || targetFolder.type !== "directory") return;

    try {
      await ensureSSHConnection();

      let successCount = 0;
      const movedItems: string[] = [];

      for (const file of draggedFiles) {
        try {
          const targetPath = targetFolder.path.endsWith("/")
            ? `${targetFolder.path}${file.name}`
            : `${targetFolder.path}/${file.name}`;

          if (file.path !== targetPath) {
            await moveSSHItem(
              sshSessionId,
              file.path,
              targetPath,
              currentHost?.id,
              currentHost?.userId?.toString(),
            );
            movedItems.push(file.name);
            successCount++;
          }
        } catch (error: unknown) {
          console.error(`Failed to move file ${file.name}:`, error);
          toast.error(
            t("fileManager.moveFileFailed", { name: file.name }) +
              ": " +
              error.message,
          );
        }
      }

      if (successCount > 0) {
        const movedFiles = draggedFiles.slice(0, successCount).map((file) => {
          const targetPath = targetFolder.path.endsWith("/")
            ? `${targetFolder.path}${file.name}`
            : `${targetFolder.path}/${file.name}`;
          return {
            originalPath: file.path,
            targetPath: targetPath,
            targetName: file.name,
          };
        });

        const undoAction: UndoAction = {
          type: "cut",
          description: t("fileManager.dragMovedItems", {
            count: successCount,
            target: targetFolder.name,
          }),
          data: {
            operation: "cut",
            copiedFiles: movedFiles,
            targetDirectory: targetFolder.path,
          },
          timestamp: Date.now(),
        };
        setUndoHistory((prev) => [...prev.slice(-9), undoAction]);

        toast.success(
          t("fileManager.successfullyMovedItems", {
            count: successCount,
            target: targetFolder.name,
          }),
        );
        handleRefreshDirectory();
        clearSelection();
      }
    } catch (error: unknown) {
      console.error("Drag move operation failed:", error);
      toast.error(t("fileManager.moveOperationFailed") + ": " + error.message);
    }
  }

  function handleFileDiff(file1: FileItem, file2: FileItem) {
    if (file1.type !== "file" || file2.type !== "file") {
      toast.error(t("fileManager.canOnlyCompareFiles"));
      return;
    }

    if (!sshSessionId) {
      toast.error(t("fileManager.noSSHConnection"));
      return;
    }

    const offsetX = 100;
    const offsetY = 80;

    const windowId = `diff-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
    const createWindowComponent = (windowId: string) => (
      <DiffWindow
        windowId={windowId}
        file1={file1}
        file2={file2}
        sshSessionId={sshSessionId}
        sshHost={currentHost}
        initialX={offsetX}
        initialY={offsetY}
      />
    );

    openWindow({
      id: windowId,
      type: "diff",
      title: t("fileManager.fileComparison", {
        file1: file1.name,
        file2: file2.name,
      }),
      isMaximized: false,
      component: createWindowComponent,
      zIndex: Date.now(),
    });

    toast.success(
      t("fileManager.comparingFiles", { file1: file1.name, file2: file2.name }),
    );
  }

  async function handleDragToDesktop(files: FileItem[]) {
    if (!currentHost || !sshSessionId) {
      toast.error(t("fileManager.noSSHConnection"));
      return;
    }

    try {
      if (systemDrag.isFileSystemAPISupported) {
        await systemDrag.handleDragToSystem(files, {
          enableToast: true,
          onError: (error) => {
            console.error("System-level drag failed:", error);
          },
        });
      } else {
        if (files.length === 1) {
          await dragToDesktop.dragFileToDesktop(files[0]);
        } else if (files.length > 1) {
          await dragToDesktop.dragFilesToDesktop(files);
        }
      }
    } catch (error: unknown) {
      console.error("Drag to desktop failed:", error);
      toast.error(
        t("fileManager.dragFailed") +
          ": " +
          (error.message || t("fileManager.unknownError")),
      );
    }
  }

  function handleOpenTerminal(path: string) {
    if (!currentHost) {
      toast.error(t("fileManager.noHostSelected"));
      return;
    }

    const windowCount = Date.now() % 10;
    const offsetX = 200 + windowCount * 40;
    const offsetY = 150 + windowCount * 40;

    const createTerminalComponent = (windowId: string) => (
      <TerminalWindow
        windowId={windowId}
        hostConfig={currentHost}
        initialPath={path}
        initialX={offsetX}
        initialY={offsetY}
      />
    );

    openWindow({
      title: t("fileManager.terminal", { host: currentHost.name, path }),
      x: offsetX,
      y: offsetY,
      width: 800,
      height: 500,
      isMaximized: false,
      isMinimized: false,
      component: createTerminalComponent,
    });

    toast.success(
      t("terminal.terminalWithPath", { host: currentHost.name, path }),
    );
  }

  function handleRunExecutable(file: FileItem) {
    if (!currentHost) {
      toast.error(t("fileManager.noHostSelected"));
      return;
    }

    if (file.type !== "file" || !file.executable) {
      toast.error(t("fileManager.onlyRunExecutableFiles"));
      return;
    }

    const fileDir = file.path.substring(0, file.path.lastIndexOf("/"));
    const fileName = file.name;
    const executeCmd = `./${fileName}`;

    const windowCount = Date.now() % 10;
    const offsetX = 250 + windowCount * 40;
    const offsetY = 200 + windowCount * 40;

    const createExecutionTerminal = (windowId: string) => (
      <TerminalWindow
        windowId={windowId}
        hostConfig={currentHost}
        initialPath={fileDir}
        initialX={offsetX}
        initialY={offsetY}
        executeCommand={executeCmd}
      />
    );

    openWindow({
      title: t("fileManager.runningFile", { file: file.name }),
      x: offsetX,
      y: offsetY,
      width: 800,
      height: 500,
      isMaximized: false,
      isMinimized: false,
      component: createExecutionTerminal,
    });

    toast.success(t("fileManager.runningFile", { file: file.name }));
  }

  async function loadPinnedFiles() {
    if (!currentHost?.id) return;

    try {
      const pinnedData = await getPinnedFiles(currentHost.id);
      const pinnedPaths = new Set(
        pinnedData.map((item: Record<string, unknown>) => item.path),
      );
      setPinnedFiles(pinnedPaths);
    } catch (error) {
      console.error("Failed to load pinned files:", error);
    }
  }

  async function handlePinFile(file: FileItem) {
    if (!currentHost?.id) return;

    try {
      await addPinnedFile(currentHost.id, file.path, file.name);
      setPinnedFiles((prev) => new Set([...prev, file.path]));
      setSidebarRefreshTrigger((prev) => prev + 1);
      toast.success(
        t("fileManager.filePinnedSuccessfully", { name: file.name }),
      );
    } catch (error) {
      console.error("Failed to pin file:", error);
      toast.error(t("fileManager.pinFileFailed"));
    }
  }

  async function handleUnpinFile(file: FileItem) {
    if (!currentHost?.id) return;

    try {
      await removePinnedFile(currentHost.id, file.path);
      setPinnedFiles((prev) => {
        const newSet = new Set(prev);
        newSet.delete(file.path);
        return newSet;
      });
      setSidebarRefreshTrigger((prev) => prev + 1);
      toast.success(
        t("fileManager.fileUnpinnedSuccessfully", { name: file.name }),
      );
    } catch (error) {
      console.error("Failed to unpin file:", error);
      toast.error(t("fileManager.unpinFileFailed"));
    }
  }

  async function handleAddShortcut(path: string) {
    if (!currentHost?.id) return;

    try {
      const folderName = path.split("/").pop() || path;
      await addFolderShortcut(currentHost.id, path, folderName);
      setSidebarRefreshTrigger((prev) => prev + 1);
      toast.success(
        t("fileManager.shortcutAddedSuccessfully", { name: folderName }),
      );
    } catch (error) {
      console.error("Failed to add shortcut:", error);
      toast.error(t("fileManager.addShortcutFailed"));
    }
  }

  function isPinnedFile(file: FileItem): boolean {
    return pinnedFiles.has(file.path);
  }

  async function recordRecentFile(file: FileItem) {
    if (!currentHost?.id || file.type === "directory") return;

    try {
      await addRecentFile(currentHost.id, file.path, file.name);
      setSidebarRefreshTrigger((prev) => prev + 1);
    } catch (error) {
      console.error("Failed to record recent file:", error);
    }
  }

  async function handleSidebarFileOpen(sidebarItem: SidebarItem) {
    const file: FileItem = {
      name: sidebarItem.name,
      path: sidebarItem.path,
      type: "file",
    };

    await handleFileOpen(file);
  }

  async function handleFileNotFound(file: FileItem) {
    if (!currentHost) return;

    try {
      await removeRecentFile(currentHost.id, file.path);

      await removePinnedFile(currentHost.id, file.path);

      setSidebarRefreshTrigger((prev) => prev + 1);
    } catch (error) {
      console.error("Failed to cleanup missing file:", error);
    }
  }

  useEffect(() => {
    setCreateIntent(null);
  }, [currentPath]);

  useEffect(() => {
    if (currentHost?.id) {
      loadPinnedFiles();
    }
  }, [currentHost?.id]);

  useEffect(() => {
    localStorage.setItem("fileManagerViewMode", viewMode);
  }, [viewMode]);

  useEffect(() => {
    localStorage.setItem("fileManagerSortBy", sortBy);
    localStorage.setItem("fileManagerSortOrder", sortOrder);
  }, [sortBy, sortOrder]);

  const filteredFiles = useMemo(
    () =>
      files
        .filter((file) =>
          file.name.toLowerCase().includes(searchQuery.toLowerCase()),
        )
        .sort((a, b) => {
          if (a.type === "directory" && b.type !== "directory") return -1;
          if (a.type !== "directory" && b.type === "directory") return 1;

          let result = 0;
          switch (sortBy) {
            case "name":
              result = a.name.localeCompare(b.name, undefined, {
                numeric: true,
                sensitivity: "base",
              });
              break;
            case "modified":
              result = (a.modified || "").localeCompare(b.modified || "");
              break;
            case "size":
              result = (a.size || 0) - (b.size || 0);
              break;
          }
          return sortOrder === "desc" ? -result : result;
        }),
    [files, searchQuery, sortBy, sortOrder],
  );

  if (!currentHost) {
    return (
      <div className="h-full flex items-center justify-center">
        <div className="text-center">
          <p className="text-lg text-muted-foreground mb-4">
            {t("fileManager.selectHostToStart")}
          </p>
        </div>
      </div>
    );
  }

  return (
    <div className="h-full flex flex-col bg-canvas relative">
      <div
        className="h-full w-full flex flex-col"
        style={{
          visibility: isConnectionLogExpanded ? "hidden" : "visible",
        }}
      >
        <div className="flex-shrink-0 border-b border-edge">
          <div className="flex items-center justify-between p-3">
            <div className="flex items-center gap-2">
              <h2 className="font-semibold text-foreground">
                {currentHost.name}
              </h2>
              <span className="text-sm text-muted-foreground">
                {currentHost.ip}:{currentHost.port}
              </span>
            </div>

            <div className="flex items-center gap-2">
              <div className="relative">
                <Search className="absolute left-2 top-2.5 h-4 w-4 text-muted-foreground" />
                <Input
                  placeholder={t("fileManager.searchFiles")}
                  value={searchQuery}
                  onChange={(e) => setSearchQuery(e.target.value)}
                  className="pl-8 w-48 h-9 bg-button border-edge"
                />
              </div>

              <div className="flex border border-edge rounded-md">
                <Button
                  variant={viewMode === "grid" ? "default" : "ghost"}
                  size="sm"
                  onClick={() => setViewMode("grid")}
                  className="rounded-r-none h-9"
                >
                  <Grid3X3 className="w-4 h-4" />
                </Button>
                <Button
                  variant={viewMode === "list" ? "default" : "ghost"}
                  size="sm"
                  onClick={() => setViewMode("list")}
                  className="rounded-l-none h-9"
                >
                  <List className="w-4 h-4" />
                </Button>
              </div>

              <DropdownMenu>
                <DropdownMenuTrigger asChild>
                  <Button variant="outline" size="sm" className="h-9">
                    <ArrowUpDown className="w-4 h-4" />
                  </Button>
                </DropdownMenuTrigger>
                <DropdownMenuContent align="end">
                  <DropdownMenuRadioGroup
                    value={sortBy}
                    onValueChange={(v) =>
                      setSortBy(v as "name" | "modified" | "size")
                    }
                  >
                    <DropdownMenuRadioItem value="name">
                      {t("fileManager.sortByName")}
                    </DropdownMenuRadioItem>
                    <DropdownMenuRadioItem value="modified">
                      {t("fileManager.sortByDate")}
                    </DropdownMenuRadioItem>
                    <DropdownMenuRadioItem value="size">
                      {t("fileManager.sortBySize")}
                    </DropdownMenuRadioItem>
                  </DropdownMenuRadioGroup>
                  <DropdownMenuSeparator />
                  <DropdownMenuRadioGroup
                    value={sortOrder}
                    onValueChange={(v) => setSortOrder(v as "asc" | "desc")}
                  >
                    <DropdownMenuRadioItem value="asc">
                      {t("fileManager.ascending")}
                    </DropdownMenuRadioItem>
                    <DropdownMenuRadioItem value="desc">
                      {t("fileManager.descending")}
                    </DropdownMenuRadioItem>
                  </DropdownMenuRadioGroup>
                </DropdownMenuContent>
              </DropdownMenu>

              <Button
                variant="outline"
                size="sm"
                onClick={() => {
                  const input = document.createElement("input");
                  input.type = "file";
                  input.multiple = true;
                  input.onchange = (e) => {
                    const files = (e.target as HTMLInputElement).files;
                    if (files) handleFilesDropped(files);
                  };
                  input.click();
                }}
                className="h-9"
              >
                <Upload className="w-4 h-4 mr-2" />
                {t("fileManager.upload")}
              </Button>

              <Button
                variant="outline"
                size="sm"
                onClick={handleCreateNewFolder}
                className="h-9"
              >
                <FolderPlus className="w-4 h-4 mr-2" />
                {t("fileManager.newFolder")}
              </Button>

              <Button
                variant="outline"
                size="sm"
                onClick={handleCreateNewFile}
                className="h-9"
              >
                <FilePlus className="w-4 h-4 mr-2" />
                {t("fileManager.newFile")}
              </Button>

              <Button
                variant="outline"
                size="sm"
                onClick={handleRefreshDirectory}
                className="h-9"
              >
                <RefreshCw className="w-4 h-4" />
              </Button>
            </div>
          </div>
        </div>

        <div className="flex-1 flex" {...dragHandlers}>
          <div className="w-64 flex-shrink-0 h-full">
            <FileManagerSidebar
              currentHost={currentHost}
              currentPath={currentPath}
              onPathChange={setCurrentPath}
              onLoadDirectory={loadDirectory}
              onFileOpen={handleSidebarFileOpen}
              sshSessionId={sshSessionId}
              refreshTrigger={sidebarRefreshTrigger}
            />
          </div>

          <div className="flex-1 relative">
            <FileManagerGrid
              files={filteredFiles}
              selectedFiles={selectedFiles}
              onFileSelect={() => {}}
              onFileOpen={handleFileOpen}
              onSelectionChange={setSelection}
              currentPath={currentPath}
              isLoading={isLoading}
              onPathChange={setCurrentPath}
              onRefresh={handleRefreshDirectory}
              onUpload={handleFilesDropped}
              sortBy={sortBy}
              sortOrder={sortOrder}
              onSortChange={(field) => {
                if (field === sortBy) {
                  setSortOrder(sortOrder === "asc" ? "desc" : "asc");
                } else {
                  setSortBy(field);
                  setSortOrder("asc");
                }
              }}
              onDownload={(files) => files.forEach(handleDownloadFile)}
              onContextMenu={handleContextMenu}
              viewMode={viewMode}
              onRename={handleRenameConfirm}
              editingFile={editingFile}
              onStartEdit={handleStartEdit}
              onCancelEdit={handleCancelEdit}
              onDelete={handleDeleteFiles}
              onCopy={handleCopyFiles}
              onCut={handleCutFiles}
              onPaste={handlePasteFiles}
              onUndo={handleUndo}
              hasClipboard={!!clipboard}
              onFileDrop={handleFileDrop}
              onFileDiff={handleFileDiff}
              onSystemDragStart={handleFileDragStart}
              onSystemDragEnd={handleFileDragEnd}
              createIntent={createIntent}
              onConfirmCreate={handleConfirmCreate}
              onCancelCreate={handleCancelCreate}
              onNewFile={handleCreateNewFile}
              onNewFolder={handleCreateNewFolder}
            />

            <FileManagerContextMenu
              x={contextMenu.x}
              y={contextMenu.y}
              files={contextMenu.files}
              isVisible={contextMenu.isVisible}
              onClose={() =>
                setContextMenu((prev) => ({ ...prev, isVisible: false }))
              }
              onDownload={(files) => files.forEach(handleDownloadFile)}
              onRename={handleRenameFile}
              onCopy={handleCopyFiles}
              onCut={handleCutFiles}
              onPaste={handlePasteFiles}
              onDelete={handleDeleteFiles}
              onUpload={() => {
                const input = document.createElement("input");
                input.type = "file";
                input.multiple = true;
                input.onchange = (e) => {
                  const files = (e.target as HTMLInputElement).files;
                  if (files) handleFilesDropped(files);
                };
                input.click();
              }}
              onNewFolder={handleCreateNewFolder}
              onNewFile={handleCreateNewFile}
              onRefresh={handleRefreshDirectory}
              hasClipboard={!!clipboard}
              onDragToDesktop={() => handleDragToDesktop(contextMenu.files)}
              onOpenTerminal={(path) => handleOpenTerminal(path)}
              onRunExecutable={(file) => handleRunExecutable(file)}
              onPinFile={handlePinFile}
              onUnpinFile={handleUnpinFile}
              onAddShortcut={handleAddShortcut}
              isPinned={isPinnedFile}
              currentPath={currentPath}
              onProperties={handleOpenPermissionsDialog}
              onExtractArchive={handleExtractArchive}
              onCompress={handleOpenCompressDialog}
              onCopyPath={handleCopyPath}
            />
          </div>
        </div>
      </div>

      <CompressDialog
        open={compressDialogFiles.length > 0}
        onOpenChange={(open) => !open && setCompressDialogFiles([])}
        fileNames={compressDialogFiles.map((f) => f.name)}
        onCompress={handleCompress}
      />

      <TOTPDialog
        isOpen={totpRequired}
        prompt={totpPrompt}
        onSubmit={handleTotpSubmit}
        onCancel={handleTotpCancel}
      />

      <WarpgateDialog
        isOpen={warpgateRequired}
        url={warpgateUrl}
        securityKey={warpgateSecurityKey}
        onContinue={handleWarpgateContinue}
        onCancel={handleWarpgateCancel}
        onOpenUrl={handleWarpgateOpenUrl}
      />

      {currentHost && (
        <SSHAuthDialog
          isOpen={showAuthDialog}
          reason={authDialogReason}
          onSubmit={handleAuthDialogSubmit}
          onCancel={handleAuthDialogCancel}
          hostInfo={{
            ip: currentHost.ip,
            port: currentHost.port,
            username: currentHost.username,
            name: currentHost.name,
          }}
        />
      )}

      <PermissionsDialog
        file={permissionsDialogFile}
        open={permissionsDialogFile !== null}
        onOpenChange={(open) => {
          if (!open) setPermissionsDialogFile(null);
        }}
        onSave={handleSavePermissions}
      />

      <SudoPasswordDialog
        open={sudoDialogOpen}
        onOpenChange={(open) => {
          setSudoDialogOpen(open);
          if (!open) setPendingSudoOperation(null);
        }}
        onSubmit={handleSudoPasswordSubmit}
      />
      <SimpleLoader
        visible={(isReconnecting || isLoading) && !isConnectionLogExpanded}
        message={t("fileManager.connecting")}
      />
      <ConnectionLog
        isConnecting={isReconnecting || isLoading}
        isConnected={!!sshSessionId}
        hasConnectionError={hasConnectionError}
        position={hasConnectionError ? "top" : "bottom"}
      />
    </div>
  );
}

function FileManagerInner({ initialHost, onClose }: FileManagerProps) {
  return (
    <WindowManager>
      <FileManagerContent initialHost={initialHost} onClose={onClose} />
    </WindowManager>
  );
}

export function FileManager(props: FileManagerProps) {
  return (
    <ConnectionLogProvider>
      <FileManagerInner {...props} />
    </ConnectionLogProvider>
  );
}