import { useState, useMemo } from 'react';
import { useToast } from '@/components/feedback/ToastProvider';
import type { FileNode } from './types';
import { MOCK_FILES } from './mockFiles';

export interface UseFileManagerViewOptions {
  filesOverride?: FileNode[];
  isLoading?: boolean;
}

export function useFileManagerView(options: UseFileManagerViewOptions = {}) {
  const { filesOverride, isLoading = false } = options;
  const { addToast } = useToast();

  const [viewMode, setViewMode] = useState<'list' | 'grid'>('list');
  const [searchQuery, setSearchQuery] = useState('');
  const [selectedFiles, setSelectedFiles] = useState<string[]>([]);
  const [currentFolder, setCurrentFolder] = useState('Root');
  const [selectedFileId, setSelectedFileId] = useState<string | null>(null);
  const [showMetadataModal, setShowMetadataModal] = useState(false);
  const [showWatermarkModal, setShowWatermarkModal] = useState(false);

  const files = filesOverride ?? MOCK_FILES;

  const filteredFiles = useMemo(
    () =>
      files.filter((f) =>
        f.name.toLowerCase().includes(searchQuery.toLowerCase()),
      ),
    [files, searchQuery],
  );

  const handleFileClick = (file: FileNode) => {
    if (file.type === 'folder') {
      setCurrentFolder(file.name);
      addToast(`Navigated to ${file.name}`, 'info');
    } else {
      setSelectedFileId(file.id);
    }
  };

  const toggleSelection = (id: string) => {
    setSelectedFiles((prev) =>
      prev.includes(id) ? prev.filter((fid) => fid !== id) : [...prev, id],
    );
  };

  const selectAll = () => {
    if (selectedFiles.length === files.length) setSelectedFiles([]);
    else setSelectedFiles(files.map((f) => f.id));
  };

  const handleBulkAction = (action: string) => {
    addToast(`${action} ${selectedFiles.length} files`, 'success');
    setSelectedFiles([]);
  };

  return {
    viewMode,
    setViewMode,
    searchQuery,
    setSearchQuery,
    selectedFiles,
    currentFolder,
    setCurrentFolder,
    selectedFileId,
    setSelectedFileId,
    showMetadataModal,
    setShowMetadataModal,
    showWatermarkModal,
    setShowWatermarkModal,
    files,
    filteredFiles,
    handleFileClick,
    toggleSelection,
    selectAll,
    handleBulkAction,
    isLoading,
  };
}